changeset 336:f5a5bbb77122

tests: switch to rexo
author David Demelier <markand@malikania.fr>
date Wed, 13 Oct 2021 20:56:07 +0200
parents 68287c7bcdb5
children 68b9d010e081
files CMakeLists.txt extern/LICENSE.libgreatest.txt extern/VERSION.libgreatest.txt extern/libgreatest/CMakeLists.txt extern/libgreatest/greatest.h tests/CMakeLists.txt tests/test-action-script.c tests/test-action.c tests/test-alloc.c tests/test-character.c tests/test-color.c tests/test-drawable.c tests/test-error.c tests/test-map.c tests/test-save-quest.c tests/test-save.c tests/test-state.c tests/test-tileset.c tests/test-util.c
diffstat 19 files changed, 869 insertions(+), 2513 deletions(-) [+]
line wrap: on
line diff
--- a/CMakeLists.txt	Wed Oct 13 15:58:02 2021 +0200
+++ b/CMakeLists.txt	Wed Oct 13 20:56:07 2021 +0200
@@ -73,7 +73,6 @@
 endif ()
 
 add_subdirectory(extern/libsqlite)
-add_subdirectory(extern/libgreatest)
 add_subdirectory(extern/librexo)
 
 add_subdirectory(src/tools/bcc)
--- a/extern/LICENSE.libgreatest.txt	Wed Oct 13 15:58:02 2021 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,13 +0,0 @@
-Copyright (c) 2011-2018 Scott Vokes <vokes.s@gmail.com>
-
-Permission to use, copy, modify, and/or distribute this software for any
-purpose with or without fee is hereby granted, provided that the above
-copyright notice and this permission notice appear in all copies.
-
-THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
-ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
-OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
--- a/extern/VERSION.libgreatest.txt	Wed Oct 13 15:58:02 2021 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,1 +0,0 @@
-1.4.2
--- a/extern/libgreatest/CMakeLists.txt	Wed Oct 13 15:58:02 2021 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,29 +0,0 @@
-#
-# CMakeLists.txt -- CMake build system for Molko's Adventure
-#
-# Copyright (c) 2020-2021 David Demelier <markand@malikania.fr>
-#
-# Permission to use, copy, modify, and/or distribute this software for any
-# purpose with or without fee is hereby granted, provided that the above
-# copyright notice and this permission notice appear in all copies.
-#
-# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
-# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
-# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-#
-
-project(libmlk-greatest)
-
-add_library(libmlk-greatest INTERFACE ${libmlk-greatest_SOURCE_DIR}/greatest.h)
-target_include_directories(
-	libmlk-greatest
-	INTERFACE
-		$<BUILD_INTERFACE:${libmlk-greatest_SOURCE_DIR}>
-)
-set_target_properties(libmlk-greatest PROPERTIES FOLDER extern)
-
-source_group("" FILES ${libmlk-greatest_SOURCE_DIR}/greatest.h)
--- a/extern/libgreatest/greatest.h	Wed Oct 13 15:58:02 2021 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,1225 +0,0 @@
-/*
- * Copyright (c) 2011-2019 Scott Vokes <vokes.s@gmail.com>
- *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-#ifndef GREATEST_H
-#define GREATEST_H
-
-#if defined(__cplusplus) && !defined(GREATEST_NO_EXTERN_CPLUSPLUS)
-extern "C" {
-#endif
-
-/* 1.4.2 */
-#define GREATEST_VERSION_MAJOR 1
-#define GREATEST_VERSION_MINOR 4
-#define GREATEST_VERSION_PATCH 2
-
-/* A unit testing system for C, contained in 1 file.
- * It doesn't use dynamic allocation or depend on anything
- * beyond ANSI C89.
- *
- * An up-to-date version can be found at:
- *     https://github.com/silentbicycle/greatest/
- */
-
-
-/*********************************************************************
- * Minimal test runner template
- *********************************************************************/
-#if 0
-
-#include "greatest.h"
-
-TEST foo_should_foo(void) {
-    PASS();
-}
-
-static void setup_cb(void *data) {
-    printf("setup callback for each test case\n");
-}
-
-static void teardown_cb(void *data) {
-    printf("teardown callback for each test case\n");
-}
-
-SUITE(suite) {
-    /* Optional setup/teardown callbacks which will be run before/after
-     * every test case. If using a test suite, they will be cleared when
-     * the suite finishes. */
-    SET_SETUP(setup_cb, voidp_to_callback_data);
-    SET_TEARDOWN(teardown_cb, voidp_to_callback_data);
-
-    RUN_TEST(foo_should_foo);
-}
-
-/* Add definitions that need to be in the test runner's main file. */
-GREATEST_MAIN_DEFS();
-
-/* Set up, run suite(s) of tests, report pass/fail/skip stats. */
-int run_tests(void) {
-    GREATEST_INIT();            /* init. greatest internals */
-    /* List of suites to run (if any). */
-    RUN_SUITE(suite);
-
-    /* Tests can also be run directly, without using test suites. */
-    RUN_TEST(foo_should_foo);
-
-    GREATEST_PRINT_REPORT();          /* display results */
-    return greatest_all_passed();
-}
-
-/* main(), for a standalone command-line test runner.
- * This replaces run_tests above, and adds command line option
- * handling and exiting with a pass/fail status. */
-int main(int argc, char **argv) {
-    GREATEST_MAIN_BEGIN();      /* init & parse command-line args */
-    RUN_SUITE(suite);
-    GREATEST_MAIN_END();        /* display results */
-}
-
-#endif
-/*********************************************************************/
-
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <ctype.h>
-
-/***********
- * Options *
- ***********/
-
-/* Default column width for non-verbose output. */
-#ifndef GREATEST_DEFAULT_WIDTH
-#define GREATEST_DEFAULT_WIDTH 72
-#endif
-
-/* FILE *, for test logging. */
-#ifndef GREATEST_STDOUT
-#define GREATEST_STDOUT stdout
-#endif
-
-/* Remove GREATEST_ prefix from most commonly used symbols? */
-#ifndef GREATEST_USE_ABBREVS
-#define GREATEST_USE_ABBREVS 1
-#endif
-
-/* Set to 0 to disable all use of setjmp/longjmp. */
-#ifndef GREATEST_USE_LONGJMP
-#define GREATEST_USE_LONGJMP 1
-#endif
-
-/* Make it possible to replace fprintf with another
- * function with the same interface. */
-#ifndef GREATEST_FPRINTF
-#define GREATEST_FPRINTF fprintf
-#endif
-
-#if GREATEST_USE_LONGJMP
-#include <setjmp.h>
-#endif
-
-/* Set to 0 to disable all use of time.h / clock(). */
-#ifndef GREATEST_USE_TIME
-#define GREATEST_USE_TIME 1
-#endif
-
-#if GREATEST_USE_TIME
-#include <time.h>
-#endif
-
-/* Floating point type, for ASSERT_IN_RANGE. */
-#ifndef GREATEST_FLOAT
-#define GREATEST_FLOAT double
-#define GREATEST_FLOAT_FMT "%g"
-#endif
-
-/* Size of buffer for test name + optional '_' separator and suffix */
-#ifndef GREATEST_TESTNAME_BUF_SIZE
-#define GREATEST_TESTNAME_BUF_SIZE 128
-#endif
-
-
-/*********
- * Types *
- *********/
-
-/* Info for the current running suite. */
-typedef struct greatest_suite_info {
-    unsigned int tests_run;
-    unsigned int passed;
-    unsigned int failed;
-    unsigned int skipped;
-
-#if GREATEST_USE_TIME
-    /* timers, pre/post running suite and individual tests */
-    clock_t pre_suite;
-    clock_t post_suite;
-    clock_t pre_test;
-    clock_t post_test;
-#endif
-} greatest_suite_info;
-
-/* Type for a suite function. */
-typedef void greatest_suite_cb(void);
-
-/* Types for setup/teardown callbacks. If non-NULL, these will be run
- * and passed the pointer to their additional data. */
-typedef void greatest_setup_cb(void *udata);
-typedef void greatest_teardown_cb(void *udata);
-
-/* Type for an equality comparison between two pointers of the same type.
- * Should return non-0 if equal, otherwise 0.
- * UDATA is a closure value, passed through from ASSERT_EQUAL_T[m]. */
-typedef int greatest_equal_cb(const void *expd, const void *got, void *udata);
-
-/* Type for a callback that prints a value pointed to by T.
- * Return value has the same meaning as printf's.
- * UDATA is a closure value, passed through from ASSERT_EQUAL_T[m]. */
-typedef int greatest_printf_cb(const void *t, void *udata);
-
-/* Callbacks for an arbitrary type; needed for type-specific
- * comparisons via GREATEST_ASSERT_EQUAL_T[m].*/
-typedef struct greatest_type_info {
-    greatest_equal_cb *equal;
-    greatest_printf_cb *print;
-} greatest_type_info;
-
-typedef struct greatest_memory_cmp_env {
-    const unsigned char *exp;
-    const unsigned char *got;
-    size_t size;
-} greatest_memory_cmp_env;
-
-/* Callbacks for string and raw memory types. */
-extern greatest_type_info greatest_type_info_string;
-extern greatest_type_info greatest_type_info_memory;
-
-typedef enum {
-    GREATEST_FLAG_FIRST_FAIL = 0x01,
-    GREATEST_FLAG_LIST_ONLY = 0x02,
-    GREATEST_FLAG_ABORT_ON_FAIL = 0x04
-} greatest_flag_t;
-
-/* Internal state for a PRNG, used to shuffle test order. */
-struct greatest_prng {
-    unsigned char random_order; /* use random ordering? */
-    unsigned char initialized;  /* is random ordering initialized? */
-    unsigned char pad_0[6];
-    unsigned long state;        /* PRNG state */
-    unsigned long count;        /* how many tests, this pass */
-    unsigned long count_ceil;   /* total number of tests */
-    unsigned long count_run;    /* total tests run */
-    unsigned long a;            /* LCG multiplier */
-    unsigned long c;            /* LCG increment */
-    unsigned long m;            /* LCG modulus, based on count_ceil */
-};
-
-/* Struct containing all test runner state. */
-typedef struct greatest_run_info {
-    unsigned char flags;
-    unsigned char verbosity;
-    unsigned char pad_0[2];
-
-    unsigned int tests_run;     /* total test count */
-
-    /* currently running test suite */
-    greatest_suite_info suite;
-
-    /* overall pass/fail/skip counts */
-    unsigned int passed;
-    unsigned int failed;
-    unsigned int skipped;
-    unsigned int assertions;
-
-    /* info to print about the most recent failure */
-    unsigned int fail_line;
-    unsigned int pad_1;
-    const char *fail_file;
-    const char *msg;
-
-    /* current setup/teardown hooks and userdata */
-    greatest_setup_cb *setup;
-    void *setup_udata;
-    greatest_teardown_cb *teardown;
-    void *teardown_udata;
-
-    /* formatting info for ".....s...F"-style output */
-    unsigned int col;
-    unsigned int width;
-
-    /* only run a specific suite or test */
-    const char *suite_filter;
-    const char *test_filter;
-    const char *test_exclude;
-    const char *name_suffix;    /* print suffix with test name */
-    char name_buf[GREATEST_TESTNAME_BUF_SIZE];
-
-    struct greatest_prng prng[2]; /* 0: suites, 1: tests */
-
-#if GREATEST_USE_TIME
-    /* overall timers */
-    clock_t begin;
-    clock_t end;
-#endif
-
-#if GREATEST_USE_LONGJMP
-    int pad_jmp_buf;
-    unsigned char pad_2[4];
-    jmp_buf jump_dest;
-#endif
-} greatest_run_info;
-
-struct greatest_report_t {
-    /* overall pass/fail/skip counts */
-    unsigned int passed;
-    unsigned int failed;
-    unsigned int skipped;
-    unsigned int assertions;
-};
-
-/* Global var for the current testing context.
- * Initialized by GREATEST_MAIN_DEFS(). */
-extern greatest_run_info greatest_info;
-
-/* Type for ASSERT_ENUM_EQ's ENUM_STR argument. */
-typedef const char *greatest_enum_str_fun(int value);
-
-
-/**********************
- * Exported functions *
- **********************/
-
-/* These are used internally by greatest macros. */
-int greatest_test_pre(const char *name);
-void greatest_test_post(int res);
-int greatest_do_assert_equal_t(const void *expd, const void *got,
-    greatest_type_info *type_info, void *udata);
-void greatest_prng_init_first_pass(int id);
-int greatest_prng_init_second_pass(int id, unsigned long seed);
-void greatest_prng_step(int id);
-
-/* These are part of the public greatest API. */
-void GREATEST_SET_SETUP_CB(greatest_setup_cb *cb, void *udata);
-void GREATEST_SET_TEARDOWN_CB(greatest_teardown_cb *cb, void *udata);
-void GREATEST_INIT(void);
-void GREATEST_PRINT_REPORT(void);
-int greatest_all_passed(void);
-void greatest_set_suite_filter(const char *filter);
-void greatest_set_test_filter(const char *filter);
-void greatest_set_test_exclude(const char *filter);
-void greatest_stop_at_first_fail(void);
-void greatest_abort_on_fail(void);
-void greatest_list_only(void);
-void greatest_get_report(struct greatest_report_t *report);
-unsigned int greatest_get_verbosity(void);
-void greatest_set_verbosity(unsigned int verbosity);
-void greatest_set_flag(greatest_flag_t flag);
-void greatest_set_test_suffix(const char *suffix);
-
-
-/********************
-* Language Support *
-********************/
-
-/* If __VA_ARGS__ (C99) is supported, allow parametric testing
-* without needing to manually manage the argument struct. */
-#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 19901L) ||        \
-    (defined(_MSC_VER) && _MSC_VER >= 1800)
-#define GREATEST_VA_ARGS
-#endif
-
-
-/**********
- * Macros *
- **********/
-
-/* Define a suite. (The duplication is intentional -- it eliminates
- * a warning from -Wmissing-declarations.) */
-#define GREATEST_SUITE(NAME) void NAME(void); void NAME(void)
-
-/* Declare a suite, provided by another compilation unit. */
-#define GREATEST_SUITE_EXTERN(NAME) void NAME(void)
-
-/* Start defining a test function.
- * The arguments are not included, to allow parametric testing. */
-#define GREATEST_TEST static enum greatest_test_res
-
-/* PASS/FAIL/SKIP result from a test. Used internally. */
-typedef enum greatest_test_res {
-    GREATEST_TEST_RES_PASS = 0,
-    GREATEST_TEST_RES_FAIL = -1,
-    GREATEST_TEST_RES_SKIP = 1
-} greatest_test_res;
-
-/* Run a suite. */
-#define GREATEST_RUN_SUITE(S_NAME) greatest_run_suite(S_NAME, #S_NAME)
-
-/* Run a test in the current suite. */
-#define GREATEST_RUN_TEST(TEST)                                         \
-    do {                                                                \
-        if (greatest_test_pre(#TEST) == 1) {                            \
-            enum greatest_test_res res = GREATEST_SAVE_CONTEXT();       \
-            if (res == GREATEST_TEST_RES_PASS) {                        \
-                res = TEST();                                           \
-            }                                                           \
-            greatest_test_post(res);                                    \
-        }                                                               \
-    } while (0)
-
-/* Ignore a test, don't warn about it being unused. */
-#define GREATEST_IGNORE_TEST(TEST) (void)TEST
-
-/* Run a test in the current suite with one void * argument,
- * which can be a pointer to a struct with multiple arguments. */
-#define GREATEST_RUN_TEST1(TEST, ENV)                                   \
-    do {                                                                \
-        if (greatest_test_pre(#TEST) == 1) {                            \
-            enum greatest_test_res res = GREATEST_SAVE_CONTEXT();       \
-            if (res == GREATEST_TEST_RES_PASS) {                        \
-                res = TEST(ENV);                                        \
-            }                                                           \
-            greatest_test_post(res);                                    \
-        }                                                               \
-    } while (0)
-
-#ifdef GREATEST_VA_ARGS
-#define GREATEST_RUN_TESTp(TEST, ...)                                   \
-    do {                                                                \
-        if (greatest_test_pre(#TEST) == 1) {                            \
-            enum greatest_test_res res = GREATEST_SAVE_CONTEXT();       \
-            if (res == GREATEST_TEST_RES_PASS) {                        \
-                res = TEST(__VA_ARGS__);                                \
-            }                                                           \
-            greatest_test_post(res);                                    \
-        }                                                               \
-    } while (0)
-#endif
-
-
-/* Check if the test runner is in verbose mode. */
-#define GREATEST_IS_VERBOSE() ((greatest_info.verbosity) > 0)
-#define GREATEST_LIST_ONLY()                                            \
-    (greatest_info.flags & GREATEST_FLAG_LIST_ONLY)
-#define GREATEST_FIRST_FAIL()                                           \
-    (greatest_info.flags & GREATEST_FLAG_FIRST_FAIL)
-#define GREATEST_ABORT_ON_FAIL()                                        \
-    (greatest_info.flags & GREATEST_FLAG_ABORT_ON_FAIL)
-#define GREATEST_FAILURE_ABORT()                                        \
-    (GREATEST_FIRST_FAIL() &&                                           \
-        (greatest_info.suite.failed > 0 || greatest_info.failed > 0))
-
-/* Message-less forms of tests defined below. */
-#define GREATEST_PASS() GREATEST_PASSm(NULL)
-#define GREATEST_FAIL() GREATEST_FAILm(NULL)
-#define GREATEST_SKIP() GREATEST_SKIPm(NULL)
-#define GREATEST_ASSERT(COND)                                           \
-    GREATEST_ASSERTm(#COND, COND)
-#define GREATEST_ASSERT_OR_LONGJMP(COND)                                \
-    GREATEST_ASSERT_OR_LONGJMPm(#COND, COND)
-#define GREATEST_ASSERT_FALSE(COND)                                     \
-    GREATEST_ASSERT_FALSEm(#COND, COND)
-#define GREATEST_ASSERT_EQ(EXP, GOT)                                    \
-    GREATEST_ASSERT_EQm(#EXP " != " #GOT, EXP, GOT)
-#define GREATEST_ASSERT_EQ_FMT(EXP, GOT, FMT)                           \
-    GREATEST_ASSERT_EQ_FMTm(#EXP " != " #GOT, EXP, GOT, FMT)
-#define GREATEST_ASSERT_IN_RANGE(EXP, GOT, TOL)                         \
-    GREATEST_ASSERT_IN_RANGEm(#EXP " != " #GOT " +/- " #TOL, EXP, GOT, TOL)
-#define GREATEST_ASSERT_EQUAL_T(EXP, GOT, TYPE_INFO, UDATA)             \
-    GREATEST_ASSERT_EQUAL_Tm(#EXP " != " #GOT, EXP, GOT, TYPE_INFO, UDATA)
-#define GREATEST_ASSERT_STR_EQ(EXP, GOT)                                \
-    GREATEST_ASSERT_STR_EQm(#EXP " != " #GOT, EXP, GOT)
-#define GREATEST_ASSERT_STRN_EQ(EXP, GOT, SIZE)                         \
-    GREATEST_ASSERT_STRN_EQm(#EXP " != " #GOT, EXP, GOT, SIZE)
-#define GREATEST_ASSERT_MEM_EQ(EXP, GOT, SIZE)                          \
-    GREATEST_ASSERT_MEM_EQm(#EXP " != " #GOT, EXP, GOT, SIZE)
-#define GREATEST_ASSERT_ENUM_EQ(EXP, GOT, ENUM_STR)                     \
-    GREATEST_ASSERT_ENUM_EQm(#EXP " != " #GOT, EXP, GOT, ENUM_STR)
-
-/* The following forms take an additional message argument first,
- * to be displayed by the test runner. */
-
-/* Fail if a condition is not true, with message. */
-#define GREATEST_ASSERTm(MSG, COND)                                     \
-    do {                                                                \
-        greatest_info.assertions++;                                     \
-        if (!(COND)) { GREATEST_FAILm(MSG); }                           \
-    } while (0)
-
-/* Fail if a condition is not true, longjmping out of test. */
-#define GREATEST_ASSERT_OR_LONGJMPm(MSG, COND)                          \
-    do {                                                                \
-        greatest_info.assertions++;                                     \
-        if (!(COND)) { GREATEST_FAIL_WITH_LONGJMPm(MSG); }              \
-    } while (0)
-
-/* Fail if a condition is not false, with message. */
-#define GREATEST_ASSERT_FALSEm(MSG, COND)                               \
-    do {                                                                \
-        greatest_info.assertions++;                                     \
-        if ((COND)) { GREATEST_FAILm(MSG); }                            \
-    } while (0)
-
-/* Fail if EXP != GOT (equality comparison by ==). */
-#define GREATEST_ASSERT_EQm(MSG, EXP, GOT)                              \
-    do {                                                                \
-        greatest_info.assertions++;                                     \
-        if ((EXP) != (GOT)) { GREATEST_FAILm(MSG); }                    \
-    } while (0)
-
-/* Fail if EXP != GOT (equality comparison by ==).
- * Warning: FMT, EXP, and GOT will be evaluated more
- * than once on failure. */
-#define GREATEST_ASSERT_EQ_FMTm(MSG, EXP, GOT, FMT)                     \
-    do {                                                                \
-        greatest_info.assertions++;                                     \
-        if ((EXP) != (GOT)) {                                           \
-            GREATEST_FPRINTF(GREATEST_STDOUT, "\nExpected: ");          \
-            GREATEST_FPRINTF(GREATEST_STDOUT, FMT, EXP);                \
-            GREATEST_FPRINTF(GREATEST_STDOUT, "\n     Got: ");          \
-            GREATEST_FPRINTF(GREATEST_STDOUT, FMT, GOT);                \
-            GREATEST_FPRINTF(GREATEST_STDOUT, "\n");                    \
-            GREATEST_FAILm(MSG);                                        \
-        }                                                               \
-    } while (0)
-
-/* Fail if EXP is not equal to GOT, printing enum IDs. */
-#define GREATEST_ASSERT_ENUM_EQm(MSG, EXP, GOT, ENUM_STR)               \
-    do {                                                                \
-        int greatest_EXP = (int)(EXP);                                  \
-        int greatest_GOT = (int)(GOT);                                  \
-        greatest_enum_str_fun *greatest_ENUM_STR = ENUM_STR;            \
-        if (greatest_EXP != greatest_GOT) {                             \
-            GREATEST_FPRINTF(GREATEST_STDOUT, "\nExpected: %s",         \
-                greatest_ENUM_STR(greatest_EXP));                       \
-            GREATEST_FPRINTF(GREATEST_STDOUT, "\n     Got: %s\n",       \
-                greatest_ENUM_STR(greatest_GOT));                       \
-            GREATEST_FAILm(MSG);                                        \
-        }                                                               \
-    } while (0)                                                         \
-
-/* Fail if GOT not in range of EXP +|- TOL. */
-#define GREATEST_ASSERT_IN_RANGEm(MSG, EXP, GOT, TOL)                   \
-    do {                                                                \
-        GREATEST_FLOAT greatest_EXP = (EXP);                            \
-        GREATEST_FLOAT greatest_GOT = (GOT);                            \
-        GREATEST_FLOAT greatest_TOL = (TOL);                            \
-        greatest_info.assertions++;                                     \
-        if ((greatest_EXP > greatest_GOT &&                             \
-                greatest_EXP - greatest_GOT > greatest_TOL) ||          \
-            (greatest_EXP < greatest_GOT &&                             \
-                greatest_GOT - greatest_EXP > greatest_TOL)) {          \
-            GREATEST_FPRINTF(GREATEST_STDOUT,                           \
-                "\nExpected: " GREATEST_FLOAT_FMT                       \
-                " +/- " GREATEST_FLOAT_FMT                              \
-                "\n     Got: " GREATEST_FLOAT_FMT                       \
-                "\n",                                                   \
-                greatest_EXP, greatest_TOL, greatest_GOT);              \
-            GREATEST_FAILm(MSG);                                        \
-        }                                                               \
-    } while (0)
-
-/* Fail if EXP is not equal to GOT, according to strcmp. */
-#define GREATEST_ASSERT_STR_EQm(MSG, EXP, GOT)                          \
-    do {                                                                \
-        GREATEST_ASSERT_EQUAL_Tm(MSG, EXP, GOT,                         \
-            &greatest_type_info_string, NULL);                          \
-    } while (0)                                                         \
-
-/* Fail if EXP is not equal to GOT, according to strncmp. */
-#define GREATEST_ASSERT_STRN_EQm(MSG, EXP, GOT, SIZE)                   \
-    do {                                                                \
-        size_t size = SIZE;                                             \
-        GREATEST_ASSERT_EQUAL_Tm(MSG, EXP, GOT,                         \
-            &greatest_type_info_string, &size);                         \
-    } while (0)                                                         \
-
-/* Fail if EXP is not equal to GOT, according to memcmp. */
-#define GREATEST_ASSERT_MEM_EQm(MSG, EXP, GOT, SIZE)                    \
-    do {                                                                \
-        greatest_memory_cmp_env env;                                    \
-        env.exp = (const unsigned char *)EXP;                           \
-        env.got = (const unsigned char *)GOT;                           \
-        env.size = SIZE;                                                \
-        GREATEST_ASSERT_EQUAL_Tm(MSG, env.exp, env.got,                 \
-            &greatest_type_info_memory, &env);                          \
-    } while (0)                                                         \
-
-/* Fail if EXP is not equal to GOT, according to a comparison
- * callback in TYPE_INFO. If they are not equal, optionally use a
- * print callback in TYPE_INFO to print them. */
-#define GREATEST_ASSERT_EQUAL_Tm(MSG, EXP, GOT, TYPE_INFO, UDATA)       \
-    do {                                                                \
-        greatest_type_info *type_info = (TYPE_INFO);                    \
-        greatest_info.assertions++;                                     \
-        if (!greatest_do_assert_equal_t(EXP, GOT,                       \
-                type_info, UDATA)) {                                    \
-            if (type_info == NULL || type_info->equal == NULL) {        \
-                GREATEST_FAILm("type_info->equal callback missing!");   \
-            } else {                                                    \
-                GREATEST_FAILm(MSG);                                    \
-            }                                                           \
-        }                                                               \
-    } while (0)                                                         \
-
-/* Pass. */
-#define GREATEST_PASSm(MSG)                                             \
-    do {                                                                \
-        greatest_info.msg = MSG;                                        \
-        return GREATEST_TEST_RES_PASS;                                  \
-    } while (0)
-
-/* Fail. */
-#define GREATEST_FAILm(MSG)                                             \
-    do {                                                                \
-        greatest_info.fail_file = __FILE__;                             \
-        greatest_info.fail_line = __LINE__;                             \
-        greatest_info.msg = MSG;                                        \
-        if (GREATEST_ABORT_ON_FAIL()) { abort(); }                      \
-        return GREATEST_TEST_RES_FAIL;                                  \
-    } while (0)
-
-/* Optional GREATEST_FAILm variant that longjmps. */
-#if GREATEST_USE_LONGJMP
-#define GREATEST_FAIL_WITH_LONGJMP() GREATEST_FAIL_WITH_LONGJMPm(NULL)
-#define GREATEST_FAIL_WITH_LONGJMPm(MSG)                                \
-    do {                                                                \
-        greatest_info.fail_file = __FILE__;                             \
-        greatest_info.fail_line = __LINE__;                             \
-        greatest_info.msg = MSG;                                        \
-        longjmp(greatest_info.jump_dest, GREATEST_TEST_RES_FAIL);       \
-    } while (0)
-#endif
-
-/* Skip the current test. */
-#define GREATEST_SKIPm(MSG)                                             \
-    do {                                                                \
-        greatest_info.msg = MSG;                                        \
-        return GREATEST_TEST_RES_SKIP;                                  \
-    } while (0)
-
-/* Check the result of a subfunction using ASSERT, etc. */
-#define GREATEST_CHECK_CALL(RES)                                        \
-    do {                                                                \
-        enum greatest_test_res greatest_RES = RES;                      \
-        if (greatest_RES != GREATEST_TEST_RES_PASS) {                   \
-            return greatest_RES;                                        \
-        }                                                               \
-    } while (0)                                                         \
-
-#if GREATEST_USE_TIME
-#define GREATEST_SET_TIME(NAME)                                         \
-    NAME = clock();                                                     \
-    if (NAME == (clock_t) -1) {                                         \
-        GREATEST_FPRINTF(GREATEST_STDOUT,                               \
-            "clock error: %s\n", #NAME);                                \
-        exit(EXIT_FAILURE);                                             \
-    }
-
-#define GREATEST_CLOCK_DIFF(C1, C2)                                     \
-    GREATEST_FPRINTF(GREATEST_STDOUT, " (%lu ticks, %.3f sec)",         \
-        (long unsigned int) (C2) - (long unsigned int)(C1),             \
-        (double)((C2) - (C1)) / (1.0 * (double)CLOCKS_PER_SEC))
-#else
-#define GREATEST_SET_TIME(UNUSED)
-#define GREATEST_CLOCK_DIFF(UNUSED1, UNUSED2)
-#endif
-
-#if GREATEST_USE_LONGJMP
-#define GREATEST_SAVE_CONTEXT()                                         \
-        /* setjmp returns 0 (GREATEST_TEST_RES_PASS) on first call *    \
-         * so the test runs, then RES_FAIL from FAIL_WITH_LONGJMP. */   \
-        ((enum greatest_test_res)(setjmp(greatest_info.jump_dest)))
-#else
-#define GREATEST_SAVE_CONTEXT()                                         \
-    /*a no-op, since setjmp/longjmp aren't being used */                \
-    GREATEST_TEST_RES_PASS
-#endif
-
-/* Run every suite / test function run within BODY in pseudo-random
- * order, seeded by SEED. (The top 3 bits of the seed are ignored.)
- *
- * This should be called like:
- *     GREATEST_SHUFFLE_TESTS(seed, {
- *         GREATEST_RUN_TEST(some_test);
- *         GREATEST_RUN_TEST(some_other_test);
- *         GREATEST_RUN_TEST(yet_another_test);
- *     });
- *
- * Note that the body of the second argument will be evaluated
- * multiple times. */
-#define GREATEST_SHUFFLE_SUITES(SD, BODY) GREATEST_SHUFFLE(0, SD, BODY)
-#define GREATEST_SHUFFLE_TESTS(SD, BODY) GREATEST_SHUFFLE(1, SD, BODY)
-#define GREATEST_SHUFFLE(ID, SD, BODY)                                  \
-    do {                                                                \
-        struct greatest_prng *prng = &greatest_info.prng[ID];           \
-        greatest_prng_init_first_pass(ID);                              \
-        do {                                                            \
-            prng->count = 0;                                            \
-            if (prng->initialized) { greatest_prng_step(ID); }          \
-            BODY;                                                       \
-            if (!prng->initialized) {                                   \
-                if (!greatest_prng_init_second_pass(ID, SD)) { break; } \
-            } else if (prng->count_run == prng->count_ceil) {           \
-                break;                                                  \
-            }                                                           \
-        } while (!GREATEST_FAILURE_ABORT());                            \
-        prng->count_run = prng->random_order = prng->initialized = 0;   \
-    } while(0)
-
-/* Include several function definitions in the main test file. */
-#define GREATEST_MAIN_DEFS()                                            \
-                                                                        \
-/* Is FILTER a subset of NAME? */                                       \
-static int greatest_name_match(const char *name, const char *filter,    \
-        int res_if_none) {                                              \
-    size_t offset = 0;                                                  \
-    size_t filter_len = filter ? strlen(filter) : 0;                    \
-    if (filter_len == 0) { return res_if_none; } /* no filter */        \
-    while (name[offset] != '\0') {                                      \
-        if (name[offset] == filter[0]) {                                \
-            if (0 == strncmp(&name[offset], filter, filter_len)) {      \
-                return 1;                                               \
-            }                                                           \
-        }                                                               \
-        offset++;                                                       \
-    }                                                                   \
-                                                                        \
-    return 0;                                                           \
-}                                                                       \
-                                                                        \
-static void greatest_buffer_test_name(const char *name) {               \
-    struct greatest_run_info *g = &greatest_info;                       \
-    size_t len = strlen(name), size = sizeof(g->name_buf);              \
-    memset(g->name_buf, 0x00, size);                                    \
-    (void)strncat(g->name_buf, name, size - 1);                         \
-    if (g->name_suffix && (len + 1 < size)) {                           \
-        g->name_buf[len] = '_';                                         \
-        strncat(&g->name_buf[len+1], g->name_suffix, size-(len+2));     \
-    }                                                                   \
-}                                                                       \
-                                                                        \
-/* Before running a test, check the name filtering and                  \
- * test shuffling state, if applicable, and then call setup hooks. */   \
-int greatest_test_pre(const char *name) {                               \
-    struct greatest_run_info *g = &greatest_info;                       \
-    int match;                                                          \
-    greatest_buffer_test_name(name);                                    \
-    match = greatest_name_match(g->name_buf, g->test_filter, 1) &&      \
-      !greatest_name_match(g->name_buf, g->test_exclude, 0);            \
-    if (GREATEST_LIST_ONLY()) {   /* just listing test names */         \
-        if (match) {                                                    \
-            GREATEST_FPRINTF(GREATEST_STDOUT, "  %s\n", g->name_buf);   \
-        }                                                               \
-        goto clear;                                                     \
-    }                                                                   \
-    if (match && (!GREATEST_FIRST_FAIL() || g->suite.failed == 0)) {    \
-            struct greatest_prng *p = &g->prng[1];                      \
-        if (p->random_order) {                                          \
-            p->count++;                                                 \
-            if (!p->initialized || ((p->count - 1) != p->state)) {      \
-                goto clear;       /* don't run this test yet */         \
-            }                                                           \
-        }                                                               \
-        GREATEST_SET_TIME(g->suite.pre_test);                           \
-        if (g->setup) { g->setup(g->setup_udata); }                     \
-        p->count_run++;                                                 \
-        return 1;                 /* test should be run */              \
-    } else {                                                            \
-        goto clear;               /* skipped */                         \
-    }                                                                   \
-clear:                                                                  \
-    g->name_suffix = NULL;                                              \
-    return 0;                                                           \
-}                                                                       \
-                                                                        \
-static void greatest_do_pass(void) {                                    \
-    struct greatest_run_info *g = &greatest_info;                       \
-    if (GREATEST_IS_VERBOSE()) {                                        \
-        GREATEST_FPRINTF(GREATEST_STDOUT, "PASS %s: %s",                \
-            g->name_buf, g->msg ? g->msg : "");                         \
-    } else {                                                            \
-        GREATEST_FPRINTF(GREATEST_STDOUT, ".");                         \
-    }                                                                   \
-    g->suite.passed++;                                                  \
-}                                                                       \
-                                                                        \
-static void greatest_do_fail(void) {                                    \
-    struct greatest_run_info *g = &greatest_info;                       \
-    if (GREATEST_IS_VERBOSE()) {                                        \
-        GREATEST_FPRINTF(GREATEST_STDOUT,                               \
-            "FAIL %s: %s (%s:%u)", g->name_buf,                         \
-            g->msg ? g->msg : "", g->fail_file, g->fail_line);          \
-    } else {                                                            \
-        GREATEST_FPRINTF(GREATEST_STDOUT, "F");                         \
-        g->col++;  /* add linebreak if in line of '.'s */               \
-        if (g->col != 0) {                                              \
-            GREATEST_FPRINTF(GREATEST_STDOUT, "\n");                    \
-            g->col = 0;                                                 \
-        }                                                               \
-        GREATEST_FPRINTF(GREATEST_STDOUT, "FAIL %s: %s (%s:%u)\n",      \
-            g->name_buf, g->msg ? g->msg : "",                          \
-            g->fail_file, g->fail_line);                                \
-    }                                                                   \
-    g->suite.failed++;                                                  \
-}                                                                       \
-                                                                        \
-static void greatest_do_skip(void) {                                    \
-    struct greatest_run_info *g = &greatest_info;                       \
-    if (GREATEST_IS_VERBOSE()) {                                        \
-        GREATEST_FPRINTF(GREATEST_STDOUT, "SKIP %s: %s",                \
-            g->name_buf, g->msg ? g->msg : "");                         \
-    } else {                                                            \
-        GREATEST_FPRINTF(GREATEST_STDOUT, "s");                         \
-    }                                                                   \
-    g->suite.skipped++;                                                 \
-}                                                                       \
-                                                                        \
-void greatest_test_post(int res) {                                      \
-    GREATEST_SET_TIME(greatest_info.suite.post_test);                   \
-    if (greatest_info.teardown) {                                       \
-        void *udata = greatest_info.teardown_udata;                     \
-        greatest_info.teardown(udata);                                  \
-    }                                                                   \
-                                                                        \
-    if (res <= GREATEST_TEST_RES_FAIL) {                                \
-        greatest_do_fail();                                             \
-    } else if (res >= GREATEST_TEST_RES_SKIP) {                         \
-        greatest_do_skip();                                             \
-    } else if (res == GREATEST_TEST_RES_PASS) {                         \
-        greatest_do_pass();                                             \
-    }                                                                   \
-    greatest_info.name_suffix = NULL;                                   \
-    greatest_info.suite.tests_run++;                                    \
-    greatest_info.col++;                                                \
-    if (GREATEST_IS_VERBOSE()) {                                        \
-        GREATEST_CLOCK_DIFF(greatest_info.suite.pre_test,               \
-            greatest_info.suite.post_test);                             \
-        GREATEST_FPRINTF(GREATEST_STDOUT, "\n");                        \
-    } else if (greatest_info.col % greatest_info.width == 0) {          \
-        GREATEST_FPRINTF(GREATEST_STDOUT, "\n");                        \
-        greatest_info.col = 0;                                          \
-    }                                                                   \
-    fflush(GREATEST_STDOUT);                                            \
-}                                                                       \
-                                                                        \
-static void report_suite(void) {                                        \
-    if (greatest_info.suite.tests_run > 0) {                            \
-        GREATEST_FPRINTF(GREATEST_STDOUT,                               \
-            "\n%u test%s - %u passed, %u failed, %u skipped",           \
-            greatest_info.suite.tests_run,                              \
-            greatest_info.suite.tests_run == 1 ? "" : "s",              \
-            greatest_info.suite.passed,                                 \
-            greatest_info.suite.failed,                                 \
-            greatest_info.suite.skipped);                               \
-        GREATEST_CLOCK_DIFF(greatest_info.suite.pre_suite,              \
-            greatest_info.suite.post_suite);                            \
-        GREATEST_FPRINTF(GREATEST_STDOUT, "\n");                        \
-    }                                                                   \
-}                                                                       \
-                                                                        \
-static void update_counts_and_reset_suite(void) {                       \
-    greatest_info.setup = NULL;                                         \
-    greatest_info.setup_udata = NULL;                                   \
-    greatest_info.teardown = NULL;                                      \
-    greatest_info.teardown_udata = NULL;                                \
-    greatest_info.passed += greatest_info.suite.passed;                 \
-    greatest_info.failed += greatest_info.suite.failed;                 \
-    greatest_info.skipped += greatest_info.suite.skipped;               \
-    greatest_info.tests_run += greatest_info.suite.tests_run;           \
-    memset(&greatest_info.suite, 0, sizeof(greatest_info.suite));       \
-    greatest_info.col = 0;                                              \
-}                                                                       \
-                                                                        \
-static int greatest_suite_pre(const char *suite_name) {                 \
-    struct greatest_prng *p = &greatest_info.prng[0];                   \
-    if (!greatest_name_match(suite_name, greatest_info.suite_filter, 1) \
-        || (GREATEST_FAILURE_ABORT())) { return 0; }                    \
-    if (p->random_order) {                                              \
-        p->count++;                                                     \
-        if (!p->initialized || ((p->count - 1) != p->state)) {          \
-            return 0; /* don't run this suite yet */                    \
-        }                                                               \
-    }                                                                   \
-    p->count_run++;                                                     \
-    update_counts_and_reset_suite();                                    \
-    GREATEST_FPRINTF(GREATEST_STDOUT, "\n* Suite %s:\n", suite_name);   \
-    GREATEST_SET_TIME(greatest_info.suite.pre_suite);                   \
-    return 1;                                                           \
-}                                                                       \
-                                                                        \
-static void greatest_suite_post(void) {                                 \
-    GREATEST_SET_TIME(greatest_info.suite.post_suite);                  \
-    report_suite();                                                     \
-}                                                                       \
-                                                                        \
-static void greatest_run_suite(greatest_suite_cb *suite_cb,             \
-                               const char *suite_name) {                \
-    if (greatest_suite_pre(suite_name)) {                               \
-        suite_cb();                                                     \
-        greatest_suite_post();                                          \
-    }                                                                   \
-}                                                                       \
-                                                                        \
-int greatest_do_assert_equal_t(const void *expd, const void *got,       \
-        greatest_type_info *type_info, void *udata) {                   \
-    int eq = 0;                                                         \
-    if (type_info == NULL || type_info->equal == NULL) {                \
-        return 0;                                                       \
-    }                                                                   \
-    eq = type_info->equal(expd, got, udata);                            \
-    if (!eq) {                                                          \
-        if (type_info->print != NULL) {                                 \
-            GREATEST_FPRINTF(GREATEST_STDOUT, "\nExpected: ");          \
-            (void)type_info->print(expd, udata);                        \
-            GREATEST_FPRINTF(GREATEST_STDOUT, "\n     Got: ");          \
-            (void)type_info->print(got, udata);                         \
-            GREATEST_FPRINTF(GREATEST_STDOUT, "\n");                    \
-        }                                                               \
-    }                                                                   \
-    return eq;                                                          \
-}                                                                       \
-                                                                        \
-static void greatest_usage(const char *name) {                          \
-    GREATEST_FPRINTF(GREATEST_STDOUT,                                   \
-        "Usage: %s [-hlfav] [-s SUITE] [-t TEST] [-x EXCLUDE]\n"        \
-        "  -h, --help  print this Help\n"                               \
-        "  -l          List suites and tests, then exit (dry run)\n"    \
-        "  -f          Stop runner after first failure\n"               \
-        "  -a          Abort on first failure (implies -f)\n"           \
-        "  -v          Verbose output\n"                                \
-        "  -s SUITE    only run suites containing substring SUITE\n"    \
-        "  -t TEST     only run tests containing substring TEST\n"      \
-        "  -x EXCLUDE  exclude tests containing substring EXCLUDE\n",   \
-        name);                                                          \
-}                                                                       \
-                                                                        \
-static void greatest_parse_options(int argc, char **argv) {             \
-    int i = 0;                                                          \
-    for (i = 1; i < argc; i++) {                                        \
-        if (argv[i][0] == '-') {                                        \
-            char f = argv[i][1];                                        \
-            if ((f == 's' || f == 't' || f == 'x') && argc <= i + 1) {  \
-                greatest_usage(argv[0]); exit(EXIT_FAILURE);            \
-            }                                                           \
-            switch (f) {                                                \
-            case 's': /* suite name filter */                           \
-                greatest_set_suite_filter(argv[i + 1]); i++; break;     \
-            case 't': /* test name filter */                            \
-                greatest_set_test_filter(argv[i + 1]); i++; break;      \
-            case 'x': /* test name exclusion */                         \
-                greatest_set_test_exclude(argv[i + 1]); i++; break;     \
-            case 'f': /* first fail flag */                             \
-                greatest_stop_at_first_fail(); break;                   \
-            case 'a': /* abort() on fail flag */                        \
-                greatest_abort_on_fail(); break;                        \
-            case 'l': /* list only (dry run) */                         \
-                greatest_list_only(); break;                            \
-            case 'v': /* first fail flag */                             \
-                greatest_info.verbosity++; break;                       \
-            case 'h': /* help */                                        \
-                greatest_usage(argv[0]); exit(EXIT_SUCCESS);            \
-            case '-':                                                   \
-                if (0 == strncmp("--help", argv[i], 6)) {               \
-                    greatest_usage(argv[0]); exit(EXIT_SUCCESS);        \
-                } else if (0 == strncmp("--", argv[i], 2)) {            \
-                    return; /* ignore following arguments */            \
-                }  /* fall through */                                   \
-            default:                                                    \
-                GREATEST_FPRINTF(GREATEST_STDOUT,                       \
-                    "Unknown argument '%s'\n", argv[i]);                \
-                greatest_usage(argv[0]);                                \
-                exit(EXIT_FAILURE);                                     \
-            }                                                           \
-        }                                                               \
-    }                                                                   \
-}                                                                       \
-                                                                        \
-int greatest_all_passed(void) { return (greatest_info.failed == 0); }   \
-                                                                        \
-void greatest_set_test_filter(const char *filter) {                     \
-    greatest_info.test_filter = filter;                                 \
-}                                                                       \
-                                                                        \
-void greatest_set_test_exclude(const char *filter) {                    \
-    greatest_info.test_exclude = filter;                                \
-}                                                                       \
-                                                                        \
-void greatest_set_suite_filter(const char *filter) {                    \
-    greatest_info.suite_filter = filter;                                \
-}                                                                       \
-                                                                        \
-void greatest_stop_at_first_fail(void) {                                \
-    greatest_set_flag(GREATEST_FLAG_FIRST_FAIL);                        \
-}                                                                       \
-                                                                        \
-void greatest_abort_on_fail(void) {                                     \
-    greatest_set_flag(GREATEST_FLAG_ABORT_ON_FAIL);                     \
-}                                                                       \
-                                                                        \
-void greatest_list_only(void) {                                         \
-    greatest_set_flag(GREATEST_FLAG_LIST_ONLY);                         \
-}                                                                       \
-                                                                        \
-void greatest_get_report(struct greatest_report_t *report) {            \
-    if (report) {                                                       \
-        report->passed = greatest_info.passed;                          \
-        report->failed = greatest_info.failed;                          \
-        report->skipped = greatest_info.skipped;                        \
-        report->assertions = greatest_info.assertions;                  \
-    }                                                                   \
-}                                                                       \
-                                                                        \
-unsigned int greatest_get_verbosity(void) {                             \
-    return greatest_info.verbosity;                                     \
-}                                                                       \
-                                                                        \
-void greatest_set_verbosity(unsigned int verbosity) {                   \
-    greatest_info.verbosity = (unsigned char)verbosity;                 \
-}                                                                       \
-                                                                        \
-void greatest_set_flag(greatest_flag_t flag) {                          \
-    greatest_info.flags = (unsigned char)(greatest_info.flags | flag);  \
-}                                                                       \
-                                                                        \
-void greatest_set_test_suffix(const char *suffix) {                     \
-    greatest_info.name_suffix = suffix;                                 \
-}                                                                       \
-                                                                        \
-void GREATEST_SET_SETUP_CB(greatest_setup_cb *cb, void *udata) {        \
-    greatest_info.setup = cb;                                           \
-    greatest_info.setup_udata = udata;                                  \
-}                                                                       \
-                                                                        \
-void GREATEST_SET_TEARDOWN_CB(greatest_teardown_cb *cb,                 \
-                                    void *udata) {                      \
-    greatest_info.teardown = cb;                                        \
-    greatest_info.teardown_udata = udata;                               \
-}                                                                       \
-                                                                        \
-static int greatest_string_equal_cb(const void *expd, const void *got,  \
-    void *udata) {                                                      \
-    size_t *size = (size_t *)udata;                                     \
-    return (size != NULL                                                \
-        ? (0 == strncmp((const char *)expd, (const char *)got, *size))  \
-        : (0 == strcmp((const char *)expd, (const char *)got)));        \
-}                                                                       \
-                                                                        \
-static int greatest_string_printf_cb(const void *t, void *udata) {      \
-    (void)udata; /* note: does not check \0 termination. */             \
-    return GREATEST_FPRINTF(GREATEST_STDOUT, "%s", (const char *)t);    \
-}                                                                       \
-                                                                        \
-greatest_type_info greatest_type_info_string = {                        \
-    greatest_string_equal_cb,                                           \
-    greatest_string_printf_cb,                                          \
-};                                                                      \
-                                                                        \
-static int greatest_memory_equal_cb(const void *expd, const void *got,  \
-    void *udata) {                                                      \
-    greatest_memory_cmp_env *env = (greatest_memory_cmp_env *)udata;    \
-    return (0 == memcmp(expd, got, env->size));                         \
-}                                                                       \
-                                                                        \
-/* Hexdump raw memory, with differences highlighted */                  \
-static int greatest_memory_printf_cb(const void *t, void *udata) {      \
-    greatest_memory_cmp_env *env = (greatest_memory_cmp_env *)udata;    \
-    const unsigned char *buf = (const unsigned char *)t;                \
-    unsigned char diff_mark = ' ';                                      \
-    FILE *out = GREATEST_STDOUT;                                        \
-    size_t i, line_i, line_len = 0;                                     \
-    int len = 0;   /* format hexdump with differences highlighted */    \
-    for (i = 0; i < env->size; i+= line_len) {                          \
-        diff_mark = ' ';                                                \
-        line_len = env->size - i;                                       \
-        if (line_len > 16) { line_len = 16; }                           \
-        for (line_i = i; line_i < i + line_len; line_i++) {             \
-            if (env->exp[line_i] != env->got[line_i]) diff_mark = 'X';  \
-        }                                                               \
-        len += GREATEST_FPRINTF(out, "\n%04x %c ",                      \
-            (unsigned int)i, diff_mark);                                \
-        for (line_i = i; line_i < i + line_len; line_i++) {             \
-            int m = env->exp[line_i] == env->got[line_i]; /* match? */  \
-            len += GREATEST_FPRINTF(out, "%02x%c",                      \
-                buf[line_i], m ? ' ' : '<');                            \
-        }                                                               \
-        for (line_i = 0; line_i < 16 - line_len; line_i++) {            \
-            len += GREATEST_FPRINTF(out, "   ");                        \
-        }                                                               \
-        GREATEST_FPRINTF(out, " ");                                     \
-        for (line_i = i; line_i < i + line_len; line_i++) {             \
-            unsigned char c = buf[line_i];                              \
-            len += GREATEST_FPRINTF(out, "%c", isprint(c) ? c : '.');   \
-        }                                                               \
-    }                                                                   \
-    len += GREATEST_FPRINTF(out, "\n");                                 \
-    return len;                                                         \
-}                                                                       \
-                                                                        \
-void greatest_prng_init_first_pass(int id) {                            \
-    greatest_info.prng[id].random_order = 1;                            \
-    greatest_info.prng[id].count_run = 0;                               \
-}                                                                       \
-                                                                        \
-int greatest_prng_init_second_pass(int id, unsigned long seed) {        \
-    struct greatest_prng *p = &greatest_info.prng[id];                  \
-    if (p->count == 0) { return 0; }                                    \
-    p->count_ceil = p->count;                                           \
-    for (p->m = 1; p->m < p->count; p->m <<= 1) {}                      \
-    p->state = seed & 0x1fffffff;     /* only use lower 29 bits */      \
-    p->a = 4LU * p->state;            /* to avoid overflow when */      \
-    p->a = (p->a ? p->a : 4) | 1;            /* multiplied by 4 */      \
-    p->c = 2147483647;        /* and so p->c ((2 ** 31) - 1) is */      \
-    p->initialized = 1;     /* always relatively prime to p->a. */      \
-    fprintf(stderr, "init_second_pass: a %lu, c %lu, state %lu\n",      \
-        p->a, p->c, p->state);                                          \
-    return 1;                                                           \
-}                                                                       \
-                                                                        \
-/* Step the pseudorandom number generator until its state reaches       \
- * another test ID between 0 and the test count.                        \
- * This use a linear congruential pseudorandom number generator,        \
- * with the power-of-two ceiling of the test count as the modulus, the  \
- * masked seed as the multiplier, and a prime as the increment. For     \
- * each generated value < the test count, run the corresponding test.   \
- * This will visit all IDs 0 <= X < mod once before repeating,          \
- * with a starting position chosen based on the initial seed.           \
- * For details, see: Knuth, The Art of Computer Programming             \
- * Volume. 2, section 3.2.1. */                                         \
-void greatest_prng_step(int id) {                                       \
-    struct greatest_prng *p = &greatest_info.prng[id];                  \
-    do {                                                                \
-        p->state = ((p->a * p->state) + p->c) & (p->m - 1);             \
-    } while (p->state >= p->count_ceil);                                \
-}                                                                       \
-                                                                        \
-void GREATEST_INIT(void) {                                              \
-    /* Suppress unused function warning if features aren't used */      \
-    (void)greatest_run_suite;                                           \
-    (void)greatest_parse_options;                                       \
-    (void)greatest_prng_step;                                           \
-    (void)greatest_prng_init_first_pass;                                \
-    (void)greatest_prng_init_second_pass;                               \
-    (void)greatest_set_test_suffix;                                     \
-                                                                        \
-    memset(&greatest_info, 0, sizeof(greatest_info));                   \
-    greatest_info.width = GREATEST_DEFAULT_WIDTH;                       \
-    GREATEST_SET_TIME(greatest_info.begin);                             \
-}                                                                       \
-                                                                        \
-/* Report passes, failures, skipped tests, the number of                \
- * assertions, and the overall run time. */                             \
-void GREATEST_PRINT_REPORT(void) {                                      \
-    if (!GREATEST_LIST_ONLY()) {                                        \
-        update_counts_and_reset_suite();                                \
-        GREATEST_SET_TIME(greatest_info.end);                           \
-        GREATEST_FPRINTF(GREATEST_STDOUT,                               \
-            "\nTotal: %u test%s",                                       \
-            greatest_info.tests_run,                                    \
-            greatest_info.tests_run == 1 ? "" : "s");                   \
-        GREATEST_CLOCK_DIFF(greatest_info.begin,                        \
-            greatest_info.end);                                         \
-        GREATEST_FPRINTF(GREATEST_STDOUT, ", %u assertion%s\n",         \
-            greatest_info.assertions,                                   \
-            greatest_info.assertions == 1 ? "" : "s");                  \
-        GREATEST_FPRINTF(GREATEST_STDOUT,                               \
-            "Pass: %u, fail: %u, skip: %u.\n",                          \
-            greatest_info.passed,                                       \
-            greatest_info.failed, greatest_info.skipped);               \
-    }                                                                   \
-}                                                                       \
-                                                                        \
-greatest_type_info greatest_type_info_memory = {                        \
-    greatest_memory_equal_cb,                                           \
-    greatest_memory_printf_cb,                                          \
-};                                                                      \
-                                                                        \
-greatest_run_info greatest_info
-
-/* Handle command-line arguments, etc. */
-#define GREATEST_MAIN_BEGIN()                                           \
-    do {                                                                \
-        GREATEST_INIT();                                                \
-        greatest_parse_options(argc, argv);                             \
-    } while (0)
-
-/* Report results, exit with exit status based on results. */
-#define GREATEST_MAIN_END()                                             \
-    do {                                                                \
-        GREATEST_PRINT_REPORT();                                        \
-        return (greatest_all_passed() ? EXIT_SUCCESS : EXIT_FAILURE);   \
-    } while (0)
-
-/* Make abbreviations without the GREATEST_ prefix for the
- * most commonly used symbols. */
-#if GREATEST_USE_ABBREVS
-#define TEST           GREATEST_TEST
-#define SUITE          GREATEST_SUITE
-#define SUITE_EXTERN   GREATEST_SUITE_EXTERN
-#define RUN_TEST       GREATEST_RUN_TEST
-#define RUN_TEST1      GREATEST_RUN_TEST1
-#define RUN_SUITE      GREATEST_RUN_SUITE
-#define IGNORE_TEST    GREATEST_IGNORE_TEST
-#define ASSERT         GREATEST_ASSERT
-#define ASSERTm        GREATEST_ASSERTm
-#define ASSERT_FALSE   GREATEST_ASSERT_FALSE
-#define ASSERT_EQ      GREATEST_ASSERT_EQ
-#define ASSERT_EQ_FMT  GREATEST_ASSERT_EQ_FMT
-#define ASSERT_IN_RANGE GREATEST_ASSERT_IN_RANGE
-#define ASSERT_EQUAL_T GREATEST_ASSERT_EQUAL_T
-#define ASSERT_STR_EQ  GREATEST_ASSERT_STR_EQ
-#define ASSERT_STRN_EQ GREATEST_ASSERT_STRN_EQ
-#define ASSERT_MEM_EQ  GREATEST_ASSERT_MEM_EQ
-#define ASSERT_ENUM_EQ GREATEST_ASSERT_ENUM_EQ
-#define ASSERT_FALSEm  GREATEST_ASSERT_FALSEm
-#define ASSERT_EQm     GREATEST_ASSERT_EQm
-#define ASSERT_EQ_FMTm GREATEST_ASSERT_EQ_FMTm
-#define ASSERT_IN_RANGEm GREATEST_ASSERT_IN_RANGEm
-#define ASSERT_EQUAL_Tm GREATEST_ASSERT_EQUAL_Tm
-#define ASSERT_STR_EQm GREATEST_ASSERT_STR_EQm
-#define ASSERT_STRN_EQm GREATEST_ASSERT_STRN_EQm
-#define ASSERT_MEM_EQm GREATEST_ASSERT_MEM_EQm
-#define ASSERT_ENUM_EQm GREATEST_ASSERT_ENUM_EQm
-#define PASS           GREATEST_PASS
-#define FAIL           GREATEST_FAIL
-#define SKIP           GREATEST_SKIP
-#define PASSm          GREATEST_PASSm
-#define FAILm          GREATEST_FAILm
-#define SKIPm          GREATEST_SKIPm
-#define SET_SETUP      GREATEST_SET_SETUP_CB
-#define SET_TEARDOWN   GREATEST_SET_TEARDOWN_CB
-#define CHECK_CALL     GREATEST_CHECK_CALL
-#define SHUFFLE_TESTS  GREATEST_SHUFFLE_TESTS
-#define SHUFFLE_SUITES GREATEST_SHUFFLE_SUITES
-
-#ifdef GREATEST_VA_ARGS
-#define RUN_TESTp      GREATEST_RUN_TESTp
-#endif
-
-#if GREATEST_USE_LONGJMP
-#define ASSERT_OR_LONGJMP  GREATEST_ASSERT_OR_LONGJMP
-#define ASSERT_OR_LONGJMPm GREATEST_ASSERT_OR_LONGJMPm
-#define FAIL_WITH_LONGJMP  GREATEST_FAIL_WITH_LONGJMP
-#define FAIL_WITH_LONGJMPm GREATEST_FAIL_WITH_LONGJMPm
-#endif
-
-#endif /* USE_ABBREVS */
-
-#if defined(__cplusplus) && !defined(GREATEST_NO_EXTERN_CPLUSPLUS)
-}
-#endif
-
-#endif
--- a/tests/CMakeLists.txt	Wed Oct 13 15:58:02 2021 +0200
+++ b/tests/CMakeLists.txt	Wed Oct 13 20:56:07 2021 +0200
@@ -40,7 +40,7 @@
 foreach (t ${TESTS})
 	add_executable(test-${t} ${tests_SOURCE_DIR}/test-${t}.c)
 	add_test(NAME test-${t} COMMAND test-${t})
-	target_link_libraries(test-${t} libmlk-adventure libmlk-greatest libmlk-rexo)
+	target_link_libraries(test-${t} libmlk-adventure libmlk-rexo)
 	target_compile_definitions(test-${t} PRIVATE DIRECTORY="${tests_SOURCE_DIR}/assets")
 	set_target_properties(test-${t} PROPERTIES FOLDER tests)
 	source_group("" FILES test-${t}.c)
--- a/tests/test-action-script.c	Wed Oct 13 15:58:02 2021 +0200
+++ b/tests/test-action-script.c	Wed Oct 13 20:56:07 2021 +0200
@@ -16,8 +16,7 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-#define GREATEST_USE_ABBREVS 0
-#include <greatest.h>
+#include <rexo.h>
 
 #include <core/action.h>
 #include <core/event.h>
@@ -86,50 +85,43 @@
 	((struct invokes *)act->data)->finish++;
 }
 
-GREATEST_TEST
-basics_init(void)
+RX_TEST_CASE(basics, init)
 {
 	struct script sc;
 
 	script_init(&sc);
 
-	GREATEST_ASSERT_EQ(sc.actionsz, 0U);
-	GREATEST_ASSERT_EQ(sc.cur, 0U);
-	
-	GREATEST_PASS();
+	RX_UINT_REQUIRE_EQUAL(sc.actionsz, 0U);
+	RX_UINT_REQUIRE_EQUAL(sc.cur, 0U);
 }
 
-GREATEST_TEST
-basics_append(void)
+RX_TEST_CASE(basics, append)
 {
 	struct action act[3] = {0};
 	struct script sc = {0};
 
-	GREATEST_ASSERT(script_append(&sc, &act[0]) == 0);
-	GREATEST_ASSERT_EQ(sc.cur, 0U);
-	GREATEST_ASSERT_EQ(sc.actionsz, 1U);
-	GREATEST_ASSERT_EQ(sc.actions[0], &act[0]);
+	RX_REQUIRE(script_append(&sc, &act[0]) == 0);
+	RX_UINT_REQUIRE_EQUAL(sc.cur, 0U);
+	RX_UINT_REQUIRE_EQUAL(sc.actionsz, 1U);
+	RX_PTR_REQUIRE_EQUAL(sc.actions[0], &act[0]);
 
-	GREATEST_ASSERT(script_append(&sc, &act[1]) == 0);
-	GREATEST_ASSERT_EQ(sc.cur, 0U);
-	GREATEST_ASSERT_EQ(sc.actionsz, 2U);
-	GREATEST_ASSERT_EQ(sc.actions[0], &act[0]);
-	GREATEST_ASSERT_EQ(sc.actions[1], &act[1]);
+	RX_REQUIRE(script_append(&sc, &act[1]) == 0);
+	RX_UINT_REQUIRE_EQUAL(sc.cur, 0U);
+	RX_UINT_REQUIRE_EQUAL(sc.actionsz, 2U);
+	RX_PTR_REQUIRE_EQUAL(sc.actions[0], &act[0]);
+	RX_PTR_REQUIRE_EQUAL(sc.actions[1], &act[1]);
 
-	GREATEST_ASSERT(script_append(&sc, &act[2]) == 0);
-	GREATEST_ASSERT_EQ(sc.cur, 0U);
-	GREATEST_ASSERT_EQ(sc.actionsz, 3U);
-	GREATEST_ASSERT_EQ(sc.actions[0], &act[0]);
-	GREATEST_ASSERT_EQ(sc.actions[1], &act[1]);
-	GREATEST_ASSERT_EQ(sc.actions[2], &act[2]);
+	RX_REQUIRE(script_append(&sc, &act[2]) == 0);
+	RX_UINT_REQUIRE_EQUAL(sc.cur, 0U);
+	RX_UINT_REQUIRE_EQUAL(sc.actionsz, 3U);
+	RX_PTR_REQUIRE_EQUAL(sc.actions[0], &act[0]);
+	RX_PTR_REQUIRE_EQUAL(sc.actions[1], &act[1]);
+	RX_PTR_REQUIRE_EQUAL(sc.actions[2], &act[2]);
 
 	script_finish(&sc);
-
-	GREATEST_PASS();
 }
 
-GREATEST_TEST
-basics_handle(void)
+RX_TEST_CASE(basics, handle)
 {
 	struct {
 		struct invokes inv;
@@ -142,73 +134,70 @@
 	
 	struct script sc = {0};
 
-	GREATEST_ASSERT(script_append(&sc, &table[0].act) == 0);
-	GREATEST_ASSERT(script_append(&sc, &table[1].act) == 0);
-	GREATEST_ASSERT(script_append(&sc, &table[2].act) == 0);
+	RX_REQUIRE(script_append(&sc, &table[0].act) == 0);
+	RX_REQUIRE(script_append(&sc, &table[1].act) == 0);
+	RX_REQUIRE(script_append(&sc, &table[2].act) == 0);
 
 	/* [0] */
 	script_handle(&sc, &(union event){0});
-	GREATEST_ASSERT_EQ(table[0].inv.handle, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.update, 0);
-	GREATEST_ASSERT_EQ(table[0].inv.draw, 0);
-	GREATEST_ASSERT_EQ(table[0].inv.end, 0);
-	GREATEST_ASSERT_EQ(table[0].inv.finish, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.handle, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.update, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.draw, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.end, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.finish, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.handle, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.update, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.draw, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.end, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.finish, 0);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.handle, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.update, 0);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.draw, 0);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.end, 0);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.finish, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.handle, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.update, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.draw, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.end, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.finish, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.handle, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.update, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.draw, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.end, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.finish, 0);
 
 	/* [0] -> [1] */
-	GREATEST_ASSERT(!script_update(&sc, 0));
+	RX_REQUIRE(!script_update(&sc, 0));
 	script_handle(&sc, &(union event){0});
 
-	GREATEST_ASSERT_EQ(table[0].inv.handle, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.update, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.draw, 0);
-	GREATEST_ASSERT_EQ(table[0].inv.end, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.finish, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.handle, 1);
-	GREATEST_ASSERT_EQ(table[1].inv.update, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.draw, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.end, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.finish, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.handle, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.update, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.draw, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.end, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.finish, 0);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.handle, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.update, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.draw, 0);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.end, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.finish, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.handle, 1);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.update, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.draw, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.end, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.finish, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.handle, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.update, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.draw, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.end, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.finish, 0);
 
 	/* [2] */
-	GREATEST_ASSERT(!script_update(&sc, 0));
+	RX_REQUIRE(!script_update(&sc, 0));
 	script_handle(&sc, &(union event){0});
 
-	GREATEST_ASSERT_EQ(table[0].inv.handle, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.update, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.draw, 0);
-	GREATEST_ASSERT_EQ(table[0].inv.end, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.finish, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.handle, 1);
-	GREATEST_ASSERT_EQ(table[1].inv.update, 1);
-	GREATEST_ASSERT_EQ(table[1].inv.draw, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.end, 1);
-	GREATEST_ASSERT_EQ(table[1].inv.finish, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.handle, 1);
-	GREATEST_ASSERT_EQ(table[2].inv.update, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.draw, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.end, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.finish, 0);
-
-	GREATEST_PASS();
+	RX_INT_REQUIRE_EQUAL(table[0].inv.handle, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.update, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.draw, 0);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.end, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.finish, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.handle, 1);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.update, 1);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.draw, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.end, 1);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.finish, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.handle, 1);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.update, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.draw, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.end, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.finish, 0);
 }
 
-GREATEST_TEST
-basics_update(void)
+RX_TEST_CASE(basics, update)
 {
 	struct {
 		struct invokes inv;
@@ -221,90 +210,87 @@
 	
 	struct script sc = {0};
 
-	GREATEST_ASSERT(script_append(&sc, &table[0].act) == 0);
-	GREATEST_ASSERT(script_append(&sc, &table[1].act) == 0);
-	GREATEST_ASSERT(script_append(&sc, &table[2].act) == 0);
+	RX_REQUIRE(script_append(&sc, &table[0].act) == 0);
+	RX_REQUIRE(script_append(&sc, &table[1].act) == 0);
+	RX_REQUIRE(script_append(&sc, &table[2].act) == 0);
 
 	/* 0 -> 1 */
-	GREATEST_ASSERT(!script_update(&sc, 0));
-	GREATEST_ASSERT_EQ(table[0].inv.handle, 0);
-	GREATEST_ASSERT_EQ(table[0].inv.update, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.draw, 0);
-	GREATEST_ASSERT_EQ(table[0].inv.end, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.finish, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.handle, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.update, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.draw, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.end, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.finish, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.handle, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.update, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.draw, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.end, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.finish, 0);
+	RX_REQUIRE(!script_update(&sc, 0));
+	RX_INT_REQUIRE_EQUAL(table[0].inv.handle, 0);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.update, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.draw, 0);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.end, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.finish, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.handle, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.update, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.draw, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.end, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.finish, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.handle, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.update, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.draw, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.end, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.finish, 0);
 
 	/* 1 -> 2 */
-	GREATEST_ASSERT(!script_update(&sc, 0));
-	GREATEST_ASSERT_EQ(table[0].inv.handle, 0);
-	GREATEST_ASSERT_EQ(table[0].inv.update, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.draw, 0);
-	GREATEST_ASSERT_EQ(table[0].inv.end, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.finish, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.handle, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.update, 1);
-	GREATEST_ASSERT_EQ(table[1].inv.draw, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.end, 1);
-	GREATEST_ASSERT_EQ(table[1].inv.finish, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.handle, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.update, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.draw, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.end, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.finish, 0);
+	RX_REQUIRE(!script_update(&sc, 0));
+	RX_INT_REQUIRE_EQUAL(table[0].inv.handle, 0);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.update, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.draw, 0);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.end, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.finish, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.handle, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.update, 1);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.draw, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.end, 1);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.finish, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.handle, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.update, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.draw, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.end, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.finish, 0);
 
 	/* 2 stays, it never ends. */
-	GREATEST_ASSERT(!script_update(&sc, 0));
-	GREATEST_ASSERT(!script_update(&sc, 0));
-	GREATEST_ASSERT(!script_update(&sc, 0));
-	GREATEST_ASSERT_EQ(table[0].inv.handle, 0);
-	GREATEST_ASSERT_EQ(table[0].inv.update, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.draw, 0);
-	GREATEST_ASSERT_EQ(table[0].inv.end, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.finish, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.handle, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.update, 1);
-	GREATEST_ASSERT_EQ(table[1].inv.draw, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.end, 1);
-	GREATEST_ASSERT_EQ(table[1].inv.finish, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.handle, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.update, 3);
-	GREATEST_ASSERT_EQ(table[2].inv.draw, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.end, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.finish, 0);
+	RX_REQUIRE(!script_update(&sc, 0));
+	RX_REQUIRE(!script_update(&sc, 0));
+	RX_REQUIRE(!script_update(&sc, 0));
+	RX_INT_REQUIRE_EQUAL(table[0].inv.handle, 0);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.update, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.draw, 0);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.end, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.finish, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.handle, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.update, 1);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.draw, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.end, 1);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.finish, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.handle, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.update, 3);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.draw, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.end, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.finish, 0);
 
 	/* Now, change its update function to complete the script. */
 	table[2].act.update = my_update_true;
-	GREATEST_ASSERT(script_update(&sc, 0));
-	GREATEST_ASSERT_EQ(table[0].inv.handle, 0);
-	GREATEST_ASSERT_EQ(table[0].inv.update, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.draw, 0);
-	GREATEST_ASSERT_EQ(table[0].inv.end, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.finish, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.handle, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.update, 1);
-	GREATEST_ASSERT_EQ(table[1].inv.draw, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.end, 1);
-	GREATEST_ASSERT_EQ(table[1].inv.finish, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.handle, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.update, 4);
-	GREATEST_ASSERT_EQ(table[2].inv.draw, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.end, 1);
-	GREATEST_ASSERT_EQ(table[2].inv.finish, 0);
-
-	GREATEST_PASS();
+	RX_REQUIRE(script_update(&sc, 0));
+	RX_INT_REQUIRE_EQUAL(table[0].inv.handle, 0);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.update, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.draw, 0);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.end, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.finish, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.handle, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.update, 1);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.draw, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.end, 1);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.finish, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.handle, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.update, 4);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.draw, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.end, 1);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.finish, 0);
 }
 
-GREATEST_TEST
-basics_draw(void)
+RX_TEST_CASE(basics, draw)
 {
 	struct {
 		struct invokes inv;
@@ -317,73 +303,70 @@
 	
 	struct script sc = {0};
 
-	GREATEST_ASSERT(script_append(&sc, &table[0].act) == 0);
-	GREATEST_ASSERT(script_append(&sc, &table[1].act) == 0);
-	GREATEST_ASSERT(script_append(&sc, &table[2].act) == 0);
+	RX_REQUIRE(script_append(&sc, &table[0].act) == 0);
+	RX_REQUIRE(script_append(&sc, &table[1].act) == 0);
+	RX_REQUIRE(script_append(&sc, &table[2].act) == 0);
 
 	/* [0] */
 	script_draw(&sc);
-	GREATEST_ASSERT_EQ(table[0].inv.handle, 0);
-	GREATEST_ASSERT_EQ(table[0].inv.update, 0);
-	GREATEST_ASSERT_EQ(table[0].inv.draw, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.end, 0);
-	GREATEST_ASSERT_EQ(table[0].inv.finish, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.handle, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.update, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.draw, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.end, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.finish, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.handle, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.update, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.draw, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.end, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.finish, 0);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.handle, 0);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.update, 0);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.draw, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.end, 0);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.finish, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.handle, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.update, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.draw, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.end, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.finish, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.handle, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.update, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.draw, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.end, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.finish, 0);
 
 	/* [0] -> [1] */
-	GREATEST_ASSERT(!script_update(&sc, 0));
+	RX_REQUIRE(!script_update(&sc, 0));
 	script_draw(&sc);
 
-	GREATEST_ASSERT_EQ(table[0].inv.handle, 0);
-	GREATEST_ASSERT_EQ(table[0].inv.update, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.draw, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.end, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.finish, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.handle, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.update, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.draw, 1);
-	GREATEST_ASSERT_EQ(table[1].inv.end, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.finish, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.handle, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.update, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.draw, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.end, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.finish, 0);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.handle, 0);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.update, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.draw, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.end, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.finish, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.handle, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.update, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.draw, 1);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.end, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.finish, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.handle, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.update, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.draw, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.end, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.finish, 0);
 
 	/* [2] */
-	GREATEST_ASSERT(!script_update(&sc, 0));
+	RX_REQUIRE(!script_update(&sc, 0));
 	script_draw(&sc);
 
-	GREATEST_ASSERT_EQ(table[0].inv.handle, 0);
-	GREATEST_ASSERT_EQ(table[0].inv.update, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.draw, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.end, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.finish, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.handle, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.update, 1);
-	GREATEST_ASSERT_EQ(table[1].inv.draw, 1);
-	GREATEST_ASSERT_EQ(table[1].inv.end, 1);
-	GREATEST_ASSERT_EQ(table[1].inv.finish, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.handle, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.update, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.draw, 1);
-	GREATEST_ASSERT_EQ(table[2].inv.end, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.finish, 0);
-
-	GREATEST_PASS();
+	RX_INT_REQUIRE_EQUAL(table[0].inv.handle, 0);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.update, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.draw, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.end, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.finish, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.handle, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.update, 1);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.draw, 1);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.end, 1);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.finish, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.handle, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.update, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.draw, 1);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.end, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.finish, 0);
 }
 
-GREATEST_TEST
-basics_finish(void)
+RX_TEST_CASE(basics, finish)
 {
 	struct {
 		struct invokes inv;
@@ -396,46 +379,33 @@
 	
 	struct script sc = {0};
 
-	GREATEST_ASSERT(script_append(&sc, &table[0].act) == 0);
-	GREATEST_ASSERT(script_append(&sc, &table[1].act) == 0);
-	GREATEST_ASSERT(script_append(&sc, &table[2].act) == 0);
+	RX_REQUIRE(script_append(&sc, &table[0].act) == 0);
+	RX_REQUIRE(script_append(&sc, &table[1].act) == 0);
+	RX_REQUIRE(script_append(&sc, &table[2].act) == 0);
 
 	/* Update once so that the current action goes to 1. */
-	GREATEST_ASSERT(!script_update(&sc, 0));
+	RX_REQUIRE(!script_update(&sc, 0));
 
 	script_finish(&sc);
 
-	GREATEST_ASSERT_EQ(table[0].inv.handle, 0);
-	GREATEST_ASSERT_EQ(table[0].inv.update, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.draw, 0);
-	GREATEST_ASSERT_EQ(table[0].inv.end, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.finish, 1);
-	GREATEST_ASSERT_EQ(table[1].inv.handle, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.update, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.draw, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.end, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.finish, 1);
-	GREATEST_ASSERT_EQ(table[2].inv.handle, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.update, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.draw, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.end, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.finish, 1);
-
-	GREATEST_PASS();
+	RX_INT_REQUIRE_EQUAL(table[0].inv.handle, 0);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.update, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.draw, 0);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.end, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.finish, 1);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.handle, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.update, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.draw, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.end, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.finish, 1);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.handle, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.update, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.draw, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.end, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.finish, 1);
 }
 
-GREATEST_SUITE(suite_basics)
-{
-	GREATEST_RUN_TEST(basics_init);
-	GREATEST_RUN_TEST(basics_append);
-	GREATEST_RUN_TEST(basics_handle);
-	GREATEST_RUN_TEST(basics_update);
-	GREATEST_RUN_TEST(basics_draw);
-	GREATEST_RUN_TEST(basics_finish);
-}
-
-GREATEST_TEST
-action_simple(void)
+RX_TEST_CASE(action, simple)
 {
 	struct {
 		struct invokes inv;
@@ -449,9 +419,9 @@
 	struct script sc = {0};
 	struct action act;
 
-	GREATEST_ASSERT(script_append(&sc, &table[0].act) == 0);
-	GREATEST_ASSERT(script_append(&sc, &table[1].act) == 0);
-	GREATEST_ASSERT(script_append(&sc, &table[2].act) == 0);
+	RX_REQUIRE(script_append(&sc, &table[0].act) == 0);
+	RX_REQUIRE(script_append(&sc, &table[1].act) == 0);
+	RX_REQUIRE(script_append(&sc, &table[2].act) == 0);
 
 	/* Now convert this script into an action itself. */
 	script_action(&sc, &act);
@@ -461,118 +431,106 @@
 	action_draw(&act);
 
 	/* [0] -> [1] */
-	GREATEST_ASSERT(!action_update(&act, 0));
-	GREATEST_ASSERT_EQ(table[0].inv.handle, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.update, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.draw, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.end, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.finish, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.handle, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.update, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.draw, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.end, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.finish, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.handle, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.update, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.draw, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.end, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.finish, 0);
+	RX_REQUIRE(!action_update(&act, 0));
+	RX_INT_REQUIRE_EQUAL(table[0].inv.handle, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.update, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.draw, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.end, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.finish, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.handle, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.update, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.draw, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.end, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.finish, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.handle, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.update, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.draw, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.end, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.finish, 0);
 
 	action_handle(&act, &(union event){0});
 	action_draw(&act);
 
 	/* [1] -> [2] */
-	GREATEST_ASSERT(!action_update(&act, 0));
-	GREATEST_ASSERT_EQ(table[0].inv.handle, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.update, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.draw, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.end, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.finish, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.handle, 1);
-	GREATEST_ASSERT_EQ(table[1].inv.update, 1);
-	GREATEST_ASSERT_EQ(table[1].inv.draw, 1);
-	GREATEST_ASSERT_EQ(table[1].inv.end, 1);
-	GREATEST_ASSERT_EQ(table[1].inv.finish, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.handle, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.update, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.draw, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.end, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.finish, 0);
+	RX_REQUIRE(!action_update(&act, 0));
+	RX_INT_REQUIRE_EQUAL(table[0].inv.handle, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.update, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.draw, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.end, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.finish, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.handle, 1);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.update, 1);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.draw, 1);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.end, 1);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.finish, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.handle, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.update, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.draw, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.end, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.finish, 0);
 
 	action_handle(&act, &(union event){0});
 	action_draw(&act);
 
 	/* 2 stays, it never ends. */
-	GREATEST_ASSERT(!action_update(&act, 0));
-	GREATEST_ASSERT(!action_update(&act, 0));
-	GREATEST_ASSERT(!action_update(&act, 0));
-	GREATEST_ASSERT_EQ(table[0].inv.handle, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.update, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.draw, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.end, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.finish, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.handle, 1);
-	GREATEST_ASSERT_EQ(table[1].inv.update, 1);
-	GREATEST_ASSERT_EQ(table[1].inv.draw, 1);
-	GREATEST_ASSERT_EQ(table[1].inv.end, 1);
-	GREATEST_ASSERT_EQ(table[1].inv.finish, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.handle, 1);
-	GREATEST_ASSERT_EQ(table[2].inv.update, 3);
-	GREATEST_ASSERT_EQ(table[2].inv.draw, 1);
-	GREATEST_ASSERT_EQ(table[2].inv.end, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.finish, 0);
+	RX_REQUIRE(!action_update(&act, 0));
+	RX_REQUIRE(!action_update(&act, 0));
+	RX_REQUIRE(!action_update(&act, 0));
+	RX_INT_REQUIRE_EQUAL(table[0].inv.handle, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.update, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.draw, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.end, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.finish, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.handle, 1);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.update, 1);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.draw, 1);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.end, 1);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.finish, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.handle, 1);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.update, 3);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.draw, 1);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.end, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.finish, 0);
 
 	table[2].act.update = my_update_true;
-	GREATEST_ASSERT(action_update(&act, 0));
-	GREATEST_ASSERT_EQ(table[0].inv.handle, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.update, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.draw, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.end, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.finish, 0);
-	GREATEST_ASSERT_EQ(table[1].inv.handle, 1);
-	GREATEST_ASSERT_EQ(table[1].inv.update, 1);
-	GREATEST_ASSERT_EQ(table[1].inv.draw, 1);
-	GREATEST_ASSERT_EQ(table[1].inv.end, 1);
-	GREATEST_ASSERT_EQ(table[1].inv.finish, 0);
-	GREATEST_ASSERT_EQ(table[2].inv.handle, 1);
-	GREATEST_ASSERT_EQ(table[2].inv.update, 4);
-	GREATEST_ASSERT_EQ(table[2].inv.draw, 1);
-	GREATEST_ASSERT_EQ(table[2].inv.end, 1);
-	GREATEST_ASSERT_EQ(table[2].inv.finish, 0);
+	RX_REQUIRE(action_update(&act, 0));
+	RX_INT_REQUIRE_EQUAL(table[0].inv.handle, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.update, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.draw, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.end, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.finish, 0);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.handle, 1);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.update, 1);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.draw, 1);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.end, 1);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.finish, 0);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.handle, 1);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.update, 4);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.draw, 1);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.end, 1);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.finish, 0);
 
 	/* Also dispose resources. */
 	action_finish(&act);
-	GREATEST_ASSERT_EQ(table[0].inv.handle, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.update, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.draw, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.end, 1);
-	GREATEST_ASSERT_EQ(table[0].inv.finish, 1);
-	GREATEST_ASSERT_EQ(table[1].inv.handle, 1);
-	GREATEST_ASSERT_EQ(table[1].inv.update, 1);
-	GREATEST_ASSERT_EQ(table[1].inv.draw, 1);
-	GREATEST_ASSERT_EQ(table[1].inv.end, 1);
-	GREATEST_ASSERT_EQ(table[1].inv.finish, 1);
-	GREATEST_ASSERT_EQ(table[2].inv.handle, 1);
-	GREATEST_ASSERT_EQ(table[2].inv.update, 4);
-	GREATEST_ASSERT_EQ(table[2].inv.draw, 1);
-	GREATEST_ASSERT_EQ(table[2].inv.end, 1);
-	GREATEST_ASSERT_EQ(table[2].inv.finish, 1);
-
-	GREATEST_PASS();
+	RX_INT_REQUIRE_EQUAL(table[0].inv.handle, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.update, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.draw, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.end, 1);
+	RX_INT_REQUIRE_EQUAL(table[0].inv.finish, 1);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.handle, 1);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.update, 1);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.draw, 1);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.end, 1);
+	RX_INT_REQUIRE_EQUAL(table[1].inv.finish, 1);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.handle, 1);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.update, 4);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.draw, 1);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.end, 1);
+	RX_INT_REQUIRE_EQUAL(table[2].inv.finish, 1);
 }
 
-GREATEST_SUITE(suite_action)
-{
-	GREATEST_RUN_TEST(action_simple);
-}
-
-GREATEST_MAIN_DEFS();
-
 int
 main(int argc, char **argv)
 {
-	GREATEST_MAIN_BEGIN();
-	GREATEST_RUN_SUITE(suite_basics);
-	GREATEST_RUN_SUITE(suite_action);
-	GREATEST_MAIN_END();
+	return rx_main(0, NULL, argc, (const char **)argv) == RX_SUCCESS ? 0 : 1;
 }
--- a/tests/test-action.c	Wed Oct 13 15:58:02 2021 +0200
+++ b/tests/test-action.c	Wed Oct 13 20:56:07 2021 +0200
@@ -16,8 +16,7 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-#define GREATEST_USE_ABBREVS 0
-#include <greatest.h>
+#include <rexo.h>
 
 #include <core/action.h>
 #include <core/event.h>
@@ -87,24 +86,21 @@
 	((struct invokes *)act->data)->finish = 1;
 }
 
-GREATEST_TEST
-basics_handle(void)
+RX_TEST_CASE(basics, handle)
 {
 	struct invokes inv = {0};
 	struct action act = INIT(&inv, my_update_true);
 
 	action_handle(&act, &dummy);
 
-	GREATEST_ASSERT(inv.handle);
-	GREATEST_ASSERT(!inv.update);
-	GREATEST_ASSERT(!inv.draw);
-	GREATEST_ASSERT(!inv.end);
-	GREATEST_ASSERT(!inv.finish);
-	GREATEST_PASS();
+	RX_REQUIRE(inv.handle);
+	RX_REQUIRE(!inv.update);
+	RX_REQUIRE(!inv.draw);
+	RX_REQUIRE(!inv.end);
+	RX_REQUIRE(!inv.finish);
 }
 
-GREATEST_TEST
-basics_update(void)
+RX_TEST_CASE(basics, update)
 {
 	struct {
 		struct invokes inv;
@@ -115,101 +111,80 @@
 	};
 
 	/* True version. */
-	GREATEST_ASSERT(action_update(&table[0].act, 0));
-	GREATEST_ASSERT(!table[0].inv.handle);
-	GREATEST_ASSERT(table[0].inv.update);
-	GREATEST_ASSERT(!table[0].inv.draw);
-	GREATEST_ASSERT(!table[0].inv.end);
-	GREATEST_ASSERT(!table[0].inv.finish);
+	RX_REQUIRE(action_update(&table[0].act, 0));
+	RX_REQUIRE(!table[0].inv.handle);
+	RX_REQUIRE(table[0].inv.update);
+	RX_REQUIRE(!table[0].inv.draw);
+	RX_REQUIRE(!table[0].inv.end);
+	RX_REQUIRE(!table[0].inv.finish);
 
 	/* False version. */
-	GREATEST_ASSERT(!action_update(&table[1].act, 0));
-	GREATEST_ASSERT(!table[1].inv.handle);
-	GREATEST_ASSERT(table[1].inv.update);
-	GREATEST_ASSERT(!table[1].inv.draw);
-	GREATEST_ASSERT(!table[1].inv.end);
-	GREATEST_ASSERT(!table[1].inv.finish);
-	
-	GREATEST_PASS();
+	RX_REQUIRE(!action_update(&table[1].act, 0));
+	RX_REQUIRE(!table[1].inv.handle);
+	RX_REQUIRE(table[1].inv.update);
+	RX_REQUIRE(!table[1].inv.draw);
+	RX_REQUIRE(!table[1].inv.end);
+	RX_REQUIRE(!table[1].inv.finish);
 }
 
-GREATEST_TEST
-basics_draw(void)
+RX_TEST_CASE(basics, draw)
 {
 	struct invokes inv = {0};
 	struct action act = INIT(&inv, my_update_true);
 
 	action_draw(&act);
 
-	GREATEST_ASSERT(!inv.handle);
-	GREATEST_ASSERT(!inv.update);
-	GREATEST_ASSERT(inv.draw);
-	GREATEST_ASSERT(!inv.end);
-	GREATEST_ASSERT(!inv.finish);
-	GREATEST_PASS();
+	RX_REQUIRE(!inv.handle);
+	RX_REQUIRE(!inv.update);
+	RX_REQUIRE(inv.draw);
+	RX_REQUIRE(!inv.end);
+	RX_REQUIRE(!inv.finish);
 }
 
-GREATEST_TEST
-basics_end(void)
+RX_TEST_CASE(basics, end)
 {
 	struct invokes inv = {0};
 	struct action act = INIT(&inv, my_update_true);
 
 	action_end(&act);
 
-	GREATEST_ASSERT(!inv.handle);
-	GREATEST_ASSERT(!inv.update);
-	GREATEST_ASSERT(!inv.draw);
-	GREATEST_ASSERT(inv.end);
-	GREATEST_ASSERT(!inv.finish);
-	GREATEST_PASS();
+	RX_REQUIRE(!inv.handle);
+	RX_REQUIRE(!inv.update);
+	RX_REQUIRE(!inv.draw);
+	RX_REQUIRE(inv.end);
+	RX_REQUIRE(!inv.finish);
 }
 
-GREATEST_TEST
-basics_finish(void)
+RX_TEST_CASE(basics, finish)
 {
 	struct invokes inv = {0};
 	struct action act = INIT(&inv, my_update_true);
 
 	action_finish(&act);
 
-	GREATEST_ASSERT(!inv.handle);
-	GREATEST_ASSERT(!inv.update);
-	GREATEST_ASSERT(!inv.draw);
-	GREATEST_ASSERT(!inv.end);
-	GREATEST_ASSERT(inv.finish);
-	GREATEST_PASS();
+	RX_REQUIRE(!inv.handle);
+	RX_REQUIRE(!inv.update);
+	RX_REQUIRE(!inv.draw);
+	RX_REQUIRE(!inv.end);
+	RX_REQUIRE(inv.finish);
 }
 
-GREATEST_SUITE(suite_basics)
-{
-	GREATEST_RUN_TEST(basics_handle);
-	GREATEST_RUN_TEST(basics_update);
-	GREATEST_RUN_TEST(basics_draw);
-	GREATEST_RUN_TEST(basics_end);
-	GREATEST_RUN_TEST(basics_finish);
-}
-
-GREATEST_TEST
-stack_add(void)
+RX_TEST_CASE(stack, add)
 {
 	struct action_stack st = {0};
 	struct action act = {0};
 
-	GREATEST_ASSERT(action_stack_add(&st, &act) == 0);
+	RX_INT_REQUIRE_EQUAL(action_stack_add(&st, &act), 0);
 
 	/* Now fill up. */
 	for (int i = 0; i < ACTION_STACK_MAX - 1; ++i)
-		GREATEST_ASSERT(action_stack_add(&st, &act) == 0);
+		RX_INT_REQUIRE_EQUAL(action_stack_add(&st, &act), 0);
 
 	/* This one should not fit in. */
-	GREATEST_ASSERT(action_stack_add(&st, &act) < 0);
-
-	GREATEST_PASS();
+	RX_INT_REQUIRE_EQUAL(action_stack_add(&st, &act), -1);
 }
 
-GREATEST_TEST
-stack_handle(void)
+RX_TEST_CASE(stack, handle)
 {
 	struct {
 		int called;
@@ -227,14 +202,12 @@
 	action_stack_add(&st, &table[2].act);
 	action_stack_handle(&st, &dummy);
 
-	GREATEST_ASSERT(table[0].called);
-	GREATEST_ASSERT(table[1].called);
-	GREATEST_ASSERT(table[2].called);
-	GREATEST_PASS();
+	RX_REQUIRE(table[0].called);
+	RX_REQUIRE(table[1].called);
+	RX_REQUIRE(table[2].called);
 }
 
-GREATEST_TEST
-stack_update(void)
+RX_TEST_CASE(stack, update)
 {
 	struct {
 		struct invokes inv;
@@ -259,58 +232,58 @@
 	action_stack_add(&st, &table[5].act);
 	action_stack_add(&st, &table[6].act);
 
-	GREATEST_ASSERT(!action_stack_update(&st, 0));
+	RX_REQUIRE(!action_stack_update(&st, 0));
 
-	GREATEST_ASSERT(!table[0].inv.handle);
-	GREATEST_ASSERT(!table[1].inv.handle);
-	GREATEST_ASSERT(!table[2].inv.handle);
-	GREATEST_ASSERT(!table[3].inv.handle);
-	GREATEST_ASSERT(!table[4].inv.handle);
-	GREATEST_ASSERT(!table[5].inv.handle);
-	GREATEST_ASSERT(!table[6].inv.handle);
+	RX_REQUIRE(!table[0].inv.handle);
+	RX_REQUIRE(!table[1].inv.handle);
+	RX_REQUIRE(!table[2].inv.handle);
+	RX_REQUIRE(!table[3].inv.handle);
+	RX_REQUIRE(!table[4].inv.handle);
+	RX_REQUIRE(!table[5].inv.handle);
+	RX_REQUIRE(!table[6].inv.handle);
 
-	GREATEST_ASSERT(table[0].inv.update);
-	GREATEST_ASSERT(table[1].inv.update);
-	GREATEST_ASSERT(table[2].inv.update);
-	GREATEST_ASSERT(table[3].inv.update);
-	GREATEST_ASSERT(table[4].inv.update);
-	GREATEST_ASSERT(table[5].inv.update);
-	GREATEST_ASSERT(table[6].inv.update);
+	RX_REQUIRE(table[0].inv.update);
+	RX_REQUIRE(table[1].inv.update);
+	RX_REQUIRE(table[2].inv.update);
+	RX_REQUIRE(table[3].inv.update);
+	RX_REQUIRE(table[4].inv.update);
+	RX_REQUIRE(table[5].inv.update);
+	RX_REQUIRE(table[6].inv.update);
 
-	GREATEST_ASSERT(!table[0].inv.draw);
-	GREATEST_ASSERT(!table[1].inv.draw);
-	GREATEST_ASSERT(!table[2].inv.draw);
-	GREATEST_ASSERT(!table[3].inv.draw);
-	GREATEST_ASSERT(!table[4].inv.draw);
-	GREATEST_ASSERT(!table[5].inv.draw);
-	GREATEST_ASSERT(!table[6].inv.draw);
+	RX_REQUIRE(!table[0].inv.draw);
+	RX_REQUIRE(!table[1].inv.draw);
+	RX_REQUIRE(!table[2].inv.draw);
+	RX_REQUIRE(!table[3].inv.draw);
+	RX_REQUIRE(!table[4].inv.draw);
+	RX_REQUIRE(!table[5].inv.draw);
+	RX_REQUIRE(!table[6].inv.draw);
 
-	GREATEST_ASSERT(!table[0].inv.end);
-	GREATEST_ASSERT(table[1].inv.end);
-	GREATEST_ASSERT(!table[2].inv.end);
-	GREATEST_ASSERT(!table[3].inv.end);
-	GREATEST_ASSERT(table[4].inv.end);
-	GREATEST_ASSERT(table[5].inv.end);
-	GREATEST_ASSERT(!table[6].inv.end);
+	RX_REQUIRE(!table[0].inv.end);
+	RX_REQUIRE(table[1].inv.end);
+	RX_REQUIRE(!table[2].inv.end);
+	RX_REQUIRE(!table[3].inv.end);
+	RX_REQUIRE(table[4].inv.end);
+	RX_REQUIRE(table[5].inv.end);
+	RX_REQUIRE(!table[6].inv.end);
 
-	GREATEST_ASSERT(!table[0].inv.finish);
-	GREATEST_ASSERT(table[1].inv.finish);
-	GREATEST_ASSERT(!table[2].inv.finish);
-	GREATEST_ASSERT(!table[3].inv.finish);
-	GREATEST_ASSERT(table[4].inv.finish);
-	GREATEST_ASSERT(table[5].inv.finish);
-	GREATEST_ASSERT(!table[6].inv.finish);
+	RX_REQUIRE(!table[0].inv.finish);
+	RX_REQUIRE(table[1].inv.finish);
+	RX_REQUIRE(!table[2].inv.finish);
+	RX_REQUIRE(!table[3].inv.finish);
+	RX_REQUIRE(table[4].inv.finish);
+	RX_REQUIRE(table[5].inv.finish);
+	RX_REQUIRE(!table[6].inv.finish);
 
 	/* The following must still be there. */
-	GREATEST_ASSERT_EQ(st.actions[0], &table[0].act);
-	GREATEST_ASSERT_EQ(st.actions[2], &table[2].act);
-	GREATEST_ASSERT_EQ(st.actions[3], &table[3].act);
-	GREATEST_ASSERT_EQ(st.actions[6], &table[6].act);
+	RX_PTR_REQUIRE_EQUAL(st.actions[0], &table[0].act);
+	RX_PTR_REQUIRE_EQUAL(st.actions[2], &table[2].act);
+	RX_PTR_REQUIRE_EQUAL(st.actions[3], &table[3].act);
+	RX_PTR_REQUIRE_EQUAL(st.actions[6], &table[6].act);
 
 	/* The following must have been NULL-ed. */
-	GREATEST_ASSERT_EQ(st.actions[1], NULL);
-	GREATEST_ASSERT_EQ(st.actions[4], NULL);
-	GREATEST_ASSERT_EQ(st.actions[5], NULL);
+	RX_PTR_REQUIRE_EQUAL(st.actions[1], NULL);
+	RX_PTR_REQUIRE_EQUAL(st.actions[4], NULL);
+	RX_PTR_REQUIRE_EQUAL(st.actions[5], NULL);
 	
 	/*
 	 * Now make all actions to return 1 and check if it cleans the stack.
@@ -320,20 +293,17 @@
 	    table[3].act.update =
 	    table[6].act.update = my_update_true;
 
-	GREATEST_ASSERT(action_stack_update(&st, 0));
-	GREATEST_ASSERT_EQ(st.actions[0], NULL);
-	GREATEST_ASSERT_EQ(st.actions[1], NULL);
-	GREATEST_ASSERT_EQ(st.actions[2], NULL);
-	GREATEST_ASSERT_EQ(st.actions[3], NULL);
-	GREATEST_ASSERT_EQ(st.actions[4], NULL);
-	GREATEST_ASSERT_EQ(st.actions[5], NULL);
-	GREATEST_ASSERT_EQ(st.actions[6], NULL);
-
-	GREATEST_PASS();
+	RX_REQUIRE(action_stack_update(&st, 0));
+	RX_PTR_REQUIRE_EQUAL(st.actions[0], NULL);
+	RX_PTR_REQUIRE_EQUAL(st.actions[1], NULL);
+	RX_PTR_REQUIRE_EQUAL(st.actions[2], NULL);
+	RX_PTR_REQUIRE_EQUAL(st.actions[3], NULL);
+	RX_PTR_REQUIRE_EQUAL(st.actions[4], NULL);
+	RX_PTR_REQUIRE_EQUAL(st.actions[5], NULL);
+	RX_PTR_REQUIRE_EQUAL(st.actions[6], NULL);
 }
 
-GREATEST_TEST
-stack_finish(void)
+RX_TEST_CASE(stack, finish)
 {
 	struct {
 		struct invokes inv;
@@ -348,42 +318,25 @@
 	action_stack_add(&st, &table[1].act);
 	action_stack_finish(&st);
 
-	GREATEST_ASSERT(!table[0].inv.handle);
-	GREATEST_ASSERT(!table[0].inv.update);
-	GREATEST_ASSERT(!table[0].inv.draw);
-	GREATEST_ASSERT(table[0].inv.end);
-	GREATEST_ASSERT(table[0].inv.finish);
+	RX_REQUIRE(!table[0].inv.handle);
+	RX_REQUIRE(!table[0].inv.update);
+	RX_REQUIRE(!table[0].inv.draw);
+	RX_REQUIRE(table[0].inv.end);
+	RX_REQUIRE(table[0].inv.finish);
 
-	GREATEST_ASSERT(!table[0].inv.handle);
-	GREATEST_ASSERT(!table[0].inv.update);
-	GREATEST_ASSERT(!table[0].inv.draw);
-	GREATEST_ASSERT(table[0].inv.end);
-	GREATEST_ASSERT(table[0].inv.finish);
+	RX_REQUIRE(!table[0].inv.handle);
+	RX_REQUIRE(!table[0].inv.update);
+	RX_REQUIRE(!table[0].inv.draw);
+	RX_REQUIRE(table[0].inv.end);
+	RX_REQUIRE(table[0].inv.finish);
 
 	/* They should also be NULL'ed. */
-	GREATEST_ASSERT_EQ(st.actions[0], NULL);
-	GREATEST_ASSERT_EQ(st.actions[1], NULL);
-
-	GREATEST_PASS();
+	RX_PTR_REQUIRE_EQUAL(st.actions[0], NULL);
+	RX_PTR_REQUIRE_EQUAL(st.actions[1], NULL);
 }
 
-GREATEST_SUITE(suite_stack)
-{
-	GREATEST_RUN_TEST(stack_add);
-	GREATEST_RUN_TEST(stack_handle);
-	GREATEST_RUN_TEST(stack_update);
-	GREATEST_RUN_TEST(stack_finish);
-}
-
-GREATEST_MAIN_DEFS();
-
 int
 main(int argc, char **argv)
 {
-	GREATEST_MAIN_BEGIN();
-	GREATEST_RUN_SUITE(suite_basics);
-	GREATEST_RUN_SUITE(suite_stack);
-	GREATEST_MAIN_END();
-
-	return 0;
+	return rx_main(0, NULL, argc, (const char **)argv) == RX_SUCCESS ? 0 : 1;
 }
--- a/tests/test-alloc.c	Wed Oct 13 15:58:02 2021 +0200
+++ b/tests/test-alloc.c	Wed Oct 13 20:56:07 2021 +0200
@@ -16,8 +16,7 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-#define GREATEST_USE_ABBREVS 0
-#include <greatest.h>
+#include <rexo.h>
 
 #include <core/alloc.h>
 
@@ -26,50 +25,41 @@
 	int y;
 };
 
-GREATEST_TEST
-test_array_simple(void)
+RX_TEST_CASE(test, array_simple)
 {
 	struct point *points;
 
-	GREATEST_ASSERT((points = alloc_array0(2, sizeof (*points))));
-	GREATEST_ASSERT_EQ(0, points[0].x);
-	GREATEST_ASSERT_EQ(0, points[0].y);
-	GREATEST_ASSERT_EQ(0, points[1].x);
-	GREATEST_ASSERT_EQ(0, points[1].y);
+	RX_REQUIRE((points = alloc_array0(2, sizeof (*points))));
+	RX_INT_REQUIRE_EQUAL(points[0].x, 0);
+	RX_INT_REQUIRE_EQUAL(points[0].y, 0);
+	RX_INT_REQUIRE_EQUAL(points[1].x, 0);
+	RX_INT_REQUIRE_EQUAL(points[1].y, 0);
 
 	points[0].x = 10;
 	points[0].y = 20;
 	points[1].x = 30;
 	points[1].y = 40;
 
-	GREATEST_ASSERT((points = alloc_rearray0(points, 2, 4, sizeof (*points))));
-	GREATEST_ASSERT_EQ(10, points[0].x);
-	GREATEST_ASSERT_EQ(20, points[0].y);
-	GREATEST_ASSERT_EQ(30, points[1].x);
-	GREATEST_ASSERT_EQ(40, points[1].y);
-	GREATEST_ASSERT_EQ(0,  points[2].x);
-	GREATEST_ASSERT_EQ(0,  points[2].y);
-	GREATEST_ASSERT_EQ(0,  points[3].x);
-	GREATEST_ASSERT_EQ(0,  points[3].y);
-
-	GREATEST_PASS();
+	RX_REQUIRE((points = alloc_rearray0(points, 2, 4, sizeof (*points))));
+	RX_INT_REQUIRE_EQUAL(points[0].x, 10);
+	RX_INT_REQUIRE_EQUAL(points[0].y, 20);
+	RX_INT_REQUIRE_EQUAL(points[1].x, 30);
+	RX_INT_REQUIRE_EQUAL(points[1].y, 40);
+	RX_INT_REQUIRE_EQUAL(points[2].x, 0);
+	RX_INT_REQUIRE_EQUAL(points[2].y, 0);
+	RX_INT_REQUIRE_EQUAL(points[3].x, 0);
+	RX_INT_REQUIRE_EQUAL(points[3].y, 0);
 }
 
-GREATEST_SUITE(suite_basics)
-{
-	GREATEST_RUN_TEST(test_array_simple);
-}
-
-GREATEST_TEST
-test_pool_simple(void)
+RX_TEST_CASE(test, pool_simple)
 {
 	struct alloc_pool pool;
 	struct point *p;
 
-	GREATEST_ASSERT(alloc_pool_init(&pool, sizeof (*p), NULL) == 0);
-	GREATEST_ASSERT_EQ(sizeof (*p), pool.elemsize);
-	GREATEST_ASSERT_EQ(0, pool.size);
-	GREATEST_ASSERT_EQ(ALLOC_POOL_INIT_DEFAULT, pool.capacity);
+	RX_REQUIRE(alloc_pool_init(&pool, sizeof (*p), NULL) == 0);
+	RX_UINT_REQUIRE_EQUAL(pool.elemsize, sizeof (*p));
+	RX_UINT_REQUIRE_EQUAL(pool.size, 0);
+	RX_UINT_REQUIRE_EQUAL(pool.capacity, ALLOC_POOL_INIT_DEFAULT);
 
 	/* Create until we reach the capacity. */
 	for (size_t i = 0; i < pool.capacity; ++i) {
@@ -78,14 +68,14 @@
 		p->y = (int)i + 1;
 	}
 
-	GREATEST_ASSERT_EQ(pool.size, pool.capacity);
+	RX_UINT_REQUIRE_EQUAL(pool.size, pool.capacity);
 
 	/* Verify values are correct. */
 	for (size_t i = 0; i < pool.size; ++i) {
 		p = ((struct point *)pool.data) + i;
 
-		GREATEST_ASSERT_EQ((int)i + 1, p->x);
-		GREATEST_ASSERT_EQ((int)i + 1, p->y);
+		RX_INT_REQUIRE_EQUAL(p->x, (int)i + 1);
+		RX_INT_REQUIRE_EQUAL(p->y, (int)i + 1);
 	}
 
 	/* Now it should reallocate. */
@@ -93,32 +83,18 @@
 	p->x = 9999;
 	p->y = 9999;
 
-	GREATEST_ASSERT(pool.capacity > pool.size);
+	RX_REQUIRE(pool.capacity > pool.size);
 
 	alloc_pool_finish(&pool);
 
-	GREATEST_ASSERT_EQ(NULL, pool.data);
-	GREATEST_ASSERT_EQ(0, pool.elemsize);
-	GREATEST_ASSERT_EQ(0, pool.size);
-	GREATEST_ASSERT_EQ(0, pool.capacity);
-
-	GREATEST_PASS();
+	RX_PTR_REQUIRE_EQUAL(pool.data, NULL);
+	RX_UINT_REQUIRE_EQUAL(pool.elemsize, 0U);
+	RX_UINT_REQUIRE_EQUAL(pool.size, 0U);
+	RX_UINT_REQUIRE_EQUAL(pool.capacity, 0U);
 }
 
-GREATEST_SUITE(suite_pool)
-{
-	GREATEST_RUN_TEST(test_pool_simple);
-}
-
-GREATEST_MAIN_DEFS();
-
 int
 main(int argc, char **argv)
 {
-	GREATEST_MAIN_BEGIN();
-	GREATEST_RUN_SUITE(suite_basics);
-	GREATEST_RUN_SUITE(suite_pool);
-	GREATEST_MAIN_END();
-
-	return 0;
+	return rx_main(0, NULL, argc, (const char **)argv) == RX_SUCCESS ? 0 : 1;
 }
--- a/tests/test-character.c	Wed Oct 13 15:58:02 2021 +0200
+++ b/tests/test-character.c	Wed Oct 13 20:56:07 2021 +0200
@@ -19,22 +19,26 @@
 #include <stdio.h>
 #include <string.h>
 
-#define GREATEST_USE_ABBREVS 0
-#include <greatest.h>
+#include <rexo.h>
 
 #include <rpg/character.h>
 #include <rpg/save.h>
 
-static void
-clean(void *data)
+RX_SET_UP(setup)
 {
-	(void)data;
+	remove("test.db");
 
+	return RX_SUCCESS;
+}
+
+RX_TEAR_DOWN(teardown)
+{
 	remove("test.db");
 }
 
-GREATEST_TEST
-test_save_simple(void)
+RX_FIXTURE(basics_fixture, void *, .set_up = setup, .tear_down = teardown);
+
+RX_TEST_CASE(test, save_simple, .fixture = basics_fixture)
 {
 	struct save db;
 	struct character ch = {
@@ -51,40 +55,28 @@
 		.luckbonus = 1004
 	};
 
-	GREATEST_ASSERT(save_open_path(&db, "test.db", SAVE_MODE_WRITE) == 0);
-	GREATEST_ASSERT(character_save(&ch, &db) == 0);
+	RX_INT_REQUIRE_EQUAL(save_open_path(&db, "test.db", SAVE_MODE_WRITE), 0);
+	RX_INT_REQUIRE_EQUAL(character_save(&ch, &db), 0);
 
 	/* Restore. */
 	memset(&ch, 0, sizeof (ch));
 	ch.name = "david";
 
-	GREATEST_ASSERT(character_load(&ch, &db) == 0);
-	GREATEST_ASSERT_EQ(1989, ch.hp);
-	GREATEST_ASSERT_EQ(1, ch.mp);
-	GREATEST_ASSERT_EQ(18, ch.level);
-	GREATEST_ASSERT_EQ(1, ch.team_order);
-	GREATEST_ASSERT_EQ(500, ch.hpbonus);
-	GREATEST_ASSERT_EQ(50, ch.mpbonus);
-	GREATEST_ASSERT_EQ(1001, ch.atkbonus);
-	GREATEST_ASSERT_EQ(1002, ch.defbonus);
-	GREATEST_ASSERT_EQ(1003, ch.agtbonus);
-	GREATEST_ASSERT_EQ(1004, ch.luckbonus);
-	GREATEST_PASS();
+	RX_REQUIRE(character_load(&ch, &db) == 0);
+	RX_INT_REQUIRE_EQUAL(ch.hp, 1989);
+	RX_INT_REQUIRE_EQUAL(ch.mp, 1);
+	RX_INT_REQUIRE_EQUAL(ch.level, 18);
+	RX_INT_REQUIRE_EQUAL(ch.team_order, 1);
+	RX_INT_REQUIRE_EQUAL(ch.hpbonus, 500);
+	RX_INT_REQUIRE_EQUAL(ch.mpbonus, 50);
+	RX_INT_REQUIRE_EQUAL(ch.atkbonus, 1001);
+	RX_INT_REQUIRE_EQUAL(ch.defbonus, 1002);
+	RX_INT_REQUIRE_EQUAL(ch.agtbonus, 1003);
+	RX_INT_REQUIRE_EQUAL(ch.luckbonus, 1004);
 }
 
-GREATEST_SUITE(suite_save)
-{
-	GREATEST_SET_SETUP_CB(clean, NULL);
-	GREATEST_SET_TEARDOWN_CB(clean, NULL);
-	GREATEST_RUN_TEST(test_save_simple);
-}
-
-GREATEST_MAIN_DEFS();
-
 int
 main(int argc, char **argv)
 {
-	GREATEST_MAIN_BEGIN();
-	GREATEST_RUN_SUITE(suite_save);
-	GREATEST_MAIN_END();
+	return rx_main(0, NULL, argc, (const char **)argv) == RX_SUCCESS ? 0 : 1;
 }
--- a/tests/test-color.c	Wed Oct 13 15:58:02 2021 +0200
+++ b/tests/test-color.c	Wed Oct 13 20:56:07 2021 +0200
@@ -16,65 +16,37 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-#include <greatest.h>
+#include <rexo.h>
 
 #include <core/color.h>
 
-TEST
-red(void)
+RX_TEST_CASE(basics, red)
 {
-	ASSERT_EQ(163, COLOR_R(0xa3000000));
-	PASS();
+	RX_INT_REQUIRE_EQUAL(COLOR_R(0xa3000000), 163);
 }
 
-TEST
-green(void)
+RX_TEST_CASE(basics, green)
 {
-	ASSERT_EQ(19, COLOR_G(0x00130000));
-	PASS();
-}
-
-TEST
-blue(void)
-{
-	ASSERT_EQ(238, COLOR_B(0x0000ee00));
-	PASS();
+	RX_INT_REQUIRE_EQUAL(COLOR_G(0x00130000), 19);
 }
 
-TEST
-alpha(void)
+RX_TEST_CASE(basics, blue)
 {
-	ASSERT_EQ(255, COLOR_A(0x000000ff));
-	PASS();
-}
-
-TEST
-simple(void)
-{
-	ASSERT_EQ(0xaabbccee, COLOR_HEX(170, 187, 204, 238));
-	PASS();
+	RX_INT_REQUIRE_EQUAL(COLOR_B(0x0000ee00), 238);
 }
 
-SUITE(hex_to_rgb)
+RX_TEST_CASE(basics, alpha)
 {
-	RUN_TEST(red);
-	RUN_TEST(green);
-	RUN_TEST(blue);
-	RUN_TEST(alpha);
+	RX_INT_REQUIRE_EQUAL(COLOR_A(0x000000ff), 255);
 }
 
-SUITE(rgb_to_hex)
+RX_TEST_CASE(basics, simple)
 {
-	RUN_TEST(simple);
+	RX_UINT_REQUIRE_EQUAL(COLOR_HEX(170, 187, 204, 238), 0xaabbccee);
 }
 
-GREATEST_MAIN_DEFS();
-
 int
 main(int argc, char **argv)
 {
-	GREATEST_MAIN_BEGIN();
-	RUN_SUITE(hex_to_rgb);
-	RUN_SUITE(rgb_to_hex);
-	GREATEST_MAIN_END();
+	return rx_main(0, NULL, argc, (const char **)argv) == RX_SUCCESS ? 0 : 1;
 }
--- a/tests/test-drawable.c	Wed Oct 13 15:58:02 2021 +0200
+++ b/tests/test-drawable.c	Wed Oct 13 20:56:07 2021 +0200
@@ -16,8 +16,7 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-#define GREATEST_USE_ABBREVS 0
-#include <greatest.h>
+#include <rexo.h>
 
 #include <core/drawable.h>
 #include <core/event.h>
@@ -75,8 +74,7 @@
 	((struct invokes *)dw->data)->finish = 1;
 }
 
-GREATEST_TEST
-basics_update(void)
+RX_TEST_CASE(basics, update)
 {
 	struct {
 		struct invokes inv;
@@ -87,95 +85,75 @@
 	};
 
 	/* True version. */
-	GREATEST_ASSERT(drawable_update(&table[0].dw, 0));
-	GREATEST_ASSERT(table[0].inv.update);
-	GREATEST_ASSERT(!table[0].inv.draw);
-	GREATEST_ASSERT(!table[0].inv.end);
-	GREATEST_ASSERT(!table[0].inv.finish);
+	RX_REQUIRE(drawable_update(&table[0].dw, 0));
+	RX_REQUIRE(table[0].inv.update);
+	RX_REQUIRE(!table[0].inv.draw);
+	RX_REQUIRE(!table[0].inv.end);
+	RX_REQUIRE(!table[0].inv.finish);
 
 	/* False version. */
-	GREATEST_ASSERT(!drawable_update(&table[1].dw, 0));
-	GREATEST_ASSERT(table[1].inv.update);
-	GREATEST_ASSERT(!table[1].inv.draw);
-	GREATEST_ASSERT(!table[1].inv.end);
-	GREATEST_ASSERT(!table[1].inv.finish);
-	
-	GREATEST_PASS();
+	RX_REQUIRE(!drawable_update(&table[1].dw, 0));
+	RX_REQUIRE(table[1].inv.update);
+	RX_REQUIRE(!table[1].inv.draw);
+	RX_REQUIRE(!table[1].inv.end);
+	RX_REQUIRE(!table[1].inv.finish);
 }
 
-GREATEST_TEST
-basics_draw(void)
+RX_TEST_CASE(basics, draw)
 {
 	struct invokes inv = {0};
 	struct drawable dw = INIT(&inv, my_update_true);
 
 	drawable_draw(&dw);
 
-	GREATEST_ASSERT(!inv.update);
-	GREATEST_ASSERT(inv.draw);
-	GREATEST_ASSERT(!inv.end);
-	GREATEST_ASSERT(!inv.finish);
-	GREATEST_PASS();
+	RX_REQUIRE(!inv.update);
+	RX_REQUIRE(inv.draw);
+	RX_REQUIRE(!inv.end);
+	RX_REQUIRE(!inv.finish);
 }
 
-GREATEST_TEST
-basics_end(void)
+RX_TEST_CASE(basics, end)
 {
 	struct invokes inv = {0};
 	struct drawable dw = INIT(&inv, my_update_true);
 
 	drawable_end(&dw);
 
-	GREATEST_ASSERT(!inv.update);
-	GREATEST_ASSERT(!inv.draw);
-	GREATEST_ASSERT(inv.end);
-	GREATEST_ASSERT(!inv.finish);
-	GREATEST_PASS();
+	RX_REQUIRE(!inv.update);
+	RX_REQUIRE(!inv.draw);
+	RX_REQUIRE(inv.end);
+	RX_REQUIRE(!inv.finish);
 }
 
-GREATEST_TEST
-basics_finish(void)
+RX_TEST_CASE(basics, finish)
 {
 	struct invokes inv = {0};
 	struct drawable dw = INIT(&inv, my_update_true);
 
 	drawable_finish(&dw);
 
-	GREATEST_ASSERT(!inv.update);
-	GREATEST_ASSERT(!inv.draw);
-	GREATEST_ASSERT(!inv.end);
-	GREATEST_ASSERT(inv.finish);
-	GREATEST_PASS();
+	RX_REQUIRE(!inv.update);
+	RX_REQUIRE(!inv.draw);
+	RX_REQUIRE(!inv.end);
+	RX_REQUIRE(inv.finish);
 }
 
-GREATEST_SUITE(suite_basics)
-{
-	GREATEST_RUN_TEST(basics_update);
-	GREATEST_RUN_TEST(basics_draw);
-	GREATEST_RUN_TEST(basics_end);
-	GREATEST_RUN_TEST(basics_finish);
-}
-
-GREATEST_TEST
-stack_add(void)
+RX_TEST_CASE(stack, add)
 {
 	struct drawable_stack st = {0};
 	struct drawable dw = {0};
 
-	GREATEST_ASSERT(drawable_stack_add(&st, &dw) == 0);
+	RX_INT_REQUIRE_EQUAL(drawable_stack_add(&st, &dw), 0);
 
 	/* Now fill up. */
 	for (int i = 0; i < DRAWABLE_STACK_MAX - 1; ++i)
-		GREATEST_ASSERT(drawable_stack_add(&st, &dw) == 0);
+		RX_INT_REQUIRE_EQUAL(drawable_stack_add(&st, &dw), 0);
 
 	/* This one should not fit in. */
-	GREATEST_ASSERT(drawable_stack_add(&st, &dw) < 0);
-
-	GREATEST_PASS();
+	RX_INT_REQUIRE_EQUAL(drawable_stack_add(&st, &dw), -1);
 }
 
-GREATEST_TEST
-stack_update(void)
+RX_TEST_CASE(stack, update)
 {
 	struct {
 		struct invokes inv;
@@ -200,50 +178,50 @@
 	drawable_stack_add(&st, &table[5].dw);
 	drawable_stack_add(&st, &table[6].dw);
 
-	GREATEST_ASSERT(!drawable_stack_update(&st, 0));
+	RX_REQUIRE(!drawable_stack_update(&st, 0));
 
-	GREATEST_ASSERT(table[0].inv.update);
-	GREATEST_ASSERT(table[1].inv.update);
-	GREATEST_ASSERT(table[2].inv.update);
-	GREATEST_ASSERT(table[3].inv.update);
-	GREATEST_ASSERT(table[4].inv.update);
-	GREATEST_ASSERT(table[5].inv.update);
-	GREATEST_ASSERT(table[6].inv.update);
+	RX_REQUIRE(table[0].inv.update);
+	RX_REQUIRE(table[1].inv.update);
+	RX_REQUIRE(table[2].inv.update);
+	RX_REQUIRE(table[3].inv.update);
+	RX_REQUIRE(table[4].inv.update);
+	RX_REQUIRE(table[5].inv.update);
+	RX_REQUIRE(table[6].inv.update);
 
-	GREATEST_ASSERT(!table[0].inv.draw);
-	GREATEST_ASSERT(!table[1].inv.draw);
-	GREATEST_ASSERT(!table[2].inv.draw);
-	GREATEST_ASSERT(!table[3].inv.draw);
-	GREATEST_ASSERT(!table[4].inv.draw);
-	GREATEST_ASSERT(!table[5].inv.draw);
-	GREATEST_ASSERT(!table[6].inv.draw);
+	RX_REQUIRE(!table[0].inv.draw);
+	RX_REQUIRE(!table[1].inv.draw);
+	RX_REQUIRE(!table[2].inv.draw);
+	RX_REQUIRE(!table[3].inv.draw);
+	RX_REQUIRE(!table[4].inv.draw);
+	RX_REQUIRE(!table[5].inv.draw);
+	RX_REQUIRE(!table[6].inv.draw);
 
-	GREATEST_ASSERT(!table[0].inv.end);
-	GREATEST_ASSERT(table[1].inv.end);
-	GREATEST_ASSERT(!table[2].inv.end);
-	GREATEST_ASSERT(!table[3].inv.end);
-	GREATEST_ASSERT(table[4].inv.end);
-	GREATEST_ASSERT(table[5].inv.end);
-	GREATEST_ASSERT(!table[6].inv.end);
+	RX_REQUIRE(!table[0].inv.end);
+	RX_REQUIRE(table[1].inv.end);
+	RX_REQUIRE(!table[2].inv.end);
+	RX_REQUIRE(!table[3].inv.end);
+	RX_REQUIRE(table[4].inv.end);
+	RX_REQUIRE(table[5].inv.end);
+	RX_REQUIRE(!table[6].inv.end);
 
-	GREATEST_ASSERT(!table[0].inv.finish);
-	GREATEST_ASSERT(table[1].inv.finish);
-	GREATEST_ASSERT(!table[2].inv.finish);
-	GREATEST_ASSERT(!table[3].inv.finish);
-	GREATEST_ASSERT(table[4].inv.finish);
-	GREATEST_ASSERT(table[5].inv.finish);
-	GREATEST_ASSERT(!table[6].inv.finish);
+	RX_REQUIRE(!table[0].inv.finish);
+	RX_REQUIRE(table[1].inv.finish);
+	RX_REQUIRE(!table[2].inv.finish);
+	RX_REQUIRE(!table[3].inv.finish);
+	RX_REQUIRE(table[4].inv.finish);
+	RX_REQUIRE(table[5].inv.finish);
+	RX_REQUIRE(!table[6].inv.finish);
 
 	/* The following must still be there. */
-	GREATEST_ASSERT_EQ(st.objects[0], &table[0].dw);
-	GREATEST_ASSERT_EQ(st.objects[2], &table[2].dw);
-	GREATEST_ASSERT_EQ(st.objects[3], &table[3].dw);
-	GREATEST_ASSERT_EQ(st.objects[6], &table[6].dw);
+	RX_PTR_REQUIRE_EQUAL(st.objects[0], &table[0].dw);
+	RX_PTR_REQUIRE_EQUAL(st.objects[2], &table[2].dw);
+	RX_PTR_REQUIRE_EQUAL(st.objects[3], &table[3].dw);
+	RX_PTR_REQUIRE_EQUAL(st.objects[6], &table[6].dw);
 
 	/* The following must have been NULL-ed. */
-	GREATEST_ASSERT_EQ(st.objects[1], NULL);
-	GREATEST_ASSERT_EQ(st.objects[4], NULL);
-	GREATEST_ASSERT_EQ(st.objects[5], NULL);
+	RX_PTR_REQUIRE_EQUAL(st.objects[1], NULL);
+	RX_PTR_REQUIRE_EQUAL(st.objects[4], NULL);
+	RX_PTR_REQUIRE_EQUAL(st.objects[5], NULL);
 	
 	/*
 	 * Now make all actions to return 1 and check if it cleans the stack.
@@ -253,20 +231,17 @@
 	    table[3].dw.update =
 	    table[6].dw.update = my_update_true;
 
-	GREATEST_ASSERT(drawable_stack_update(&st, 0));
-	GREATEST_ASSERT_EQ(st.objects[0], NULL);
-	GREATEST_ASSERT_EQ(st.objects[1], NULL);
-	GREATEST_ASSERT_EQ(st.objects[2], NULL);
-	GREATEST_ASSERT_EQ(st.objects[3], NULL);
-	GREATEST_ASSERT_EQ(st.objects[4], NULL);
-	GREATEST_ASSERT_EQ(st.objects[5], NULL);
-	GREATEST_ASSERT_EQ(st.objects[6], NULL);
-
-	GREATEST_PASS();
+	RX_REQUIRE(drawable_stack_update(&st, 0));
+	RX_PTR_REQUIRE_EQUAL(st.objects[0], NULL);
+	RX_PTR_REQUIRE_EQUAL(st.objects[1], NULL);
+	RX_PTR_REQUIRE_EQUAL(st.objects[2], NULL);
+	RX_PTR_REQUIRE_EQUAL(st.objects[3], NULL);
+	RX_PTR_REQUIRE_EQUAL(st.objects[4], NULL);
+	RX_PTR_REQUIRE_EQUAL(st.objects[5], NULL);
+	RX_PTR_REQUIRE_EQUAL(st.objects[6], NULL);
 }
 
-GREATEST_TEST
-stack_finish(void)
+RX_TEST_CASE(stack, finish)
 {
 	struct {
 		struct invokes inv;
@@ -281,39 +256,23 @@
 	drawable_stack_add(&st, &table[1].dw);
 	drawable_stack_finish(&st);
 
-	GREATEST_ASSERT(!table[0].inv.update);
-	GREATEST_ASSERT(!table[0].inv.draw);
-	GREATEST_ASSERT(table[0].inv.end);
-	GREATEST_ASSERT(table[0].inv.finish);
+	RX_REQUIRE(!table[0].inv.update);
+	RX_REQUIRE(!table[0].inv.draw);
+	RX_REQUIRE(table[0].inv.end);
+	RX_REQUIRE(table[0].inv.finish);
 
-	GREATEST_ASSERT(!table[0].inv.update);
-	GREATEST_ASSERT(!table[0].inv.draw);
-	GREATEST_ASSERT(table[0].inv.end);
-	GREATEST_ASSERT(table[0].inv.finish);
+	RX_REQUIRE(!table[0].inv.update);
+	RX_REQUIRE(!table[0].inv.draw);
+	RX_REQUIRE(table[0].inv.end);
+	RX_REQUIRE(table[0].inv.finish);
 
 	/* They should also be NULL'ed. */
-	GREATEST_ASSERT_EQ(st.objects[0], NULL);
-	GREATEST_ASSERT_EQ(st.objects[1], NULL);
-
-	GREATEST_PASS();
+	RX_PTR_REQUIRE_EQUAL(st.objects[0], NULL);
+	RX_PTR_REQUIRE_EQUAL(st.objects[1], NULL);
 }
 
-GREATEST_SUITE(suite_stack)
-{
-	GREATEST_RUN_TEST(stack_add);
-	GREATEST_RUN_TEST(stack_update);
-	GREATEST_RUN_TEST(stack_finish);
-}
-
-GREATEST_MAIN_DEFS();
-
 int
 main(int argc, char **argv)
 {
-	GREATEST_MAIN_BEGIN();
-	GREATEST_RUN_SUITE(suite_basics);
-	GREATEST_RUN_SUITE(suite_stack);
-	GREATEST_MAIN_END();
-
-	return 0;
+	return rx_main(0, NULL, argc, (const char **)argv) == RX_SUCCESS ? 0 : 1;
 }
--- a/tests/test-error.c	Wed Oct 13 15:58:02 2021 +0200
+++ b/tests/test-error.c	Wed Oct 13 20:56:07 2021 +0200
@@ -16,29 +16,18 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-#include <greatest.h>
+#include <rexo.h>
 
 #include <core/error.h>
 
-TEST
-simple(void)
+RX_TEST_CASE(basics, simple)
 {
 	errorf("Failed: %d", 123);
-	ASSERT_STR_EQ("Failed: 123", error());
-	PASS();
+	RX_STR_REQUIRE_EQUAL("Failed: 123", error());
 }
 
-SUITE(errors)
-{
-	RUN_TEST(simple);
-}
-
-GREATEST_MAIN_DEFS();
-
 int
 main(int argc, char **argv)
 {
-	GREATEST_MAIN_BEGIN();
-	RUN_SUITE(errors);
-	GREATEST_MAIN_END();
+	return rx_main(0, NULL, argc, (const char **)argv) == RX_SUCCESS ? 0 : 1;
 }
--- a/tests/test-map.c	Wed Oct 13 15:58:02 2021 +0200
+++ b/tests/test-map.c	Wed Oct 13 20:56:07 2021 +0200
@@ -16,8 +16,7 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-#define GREATEST_USE_ABBREVS 0
-#include <greatest.h>
+#include <rexo.h>
 
 #include <core/core.h>
 #include <core/error.h>
@@ -28,143 +27,111 @@
 #include <rpg/map-file.h>
 #include <rpg/map.h>
 
-GREATEST_TEST
-test_basics_sample(void)
+RX_TEST_CASE(test, basics_sample)
 {
 	struct map_file loader = {0};
 	struct map map = {0};
 
-	GREATEST_ASSERT(map_file_open(&loader, &map, DIRECTORY "sample-map.map"));
-	GREATEST_ASSERT_STR_EQ("This is a test map", map.title);
-	GREATEST_ASSERT_EQ(4, map.columns);
-	GREATEST_ASSERT_EQ(2, map.rows);
+	RX_INT_REQUIRE_EQUAL(map_file_open(&loader, &map, DIRECTORY "/maps/sample-map.map"), 0);
+	RX_STR_REQUIRE_EQUAL(map.title, "This is a test map");
+	RX_UINT_REQUIRE_EQUAL(map.columns, 4U);
+	RX_UINT_REQUIRE_EQUAL(map.rows, 2U);
 
-	GREATEST_ASSERT_EQ(0, map.layers[0].tiles[0]);
-	GREATEST_ASSERT_EQ(1, map.layers[0].tiles[1]);
-	GREATEST_ASSERT_EQ(2, map.layers[0].tiles[2]);
-	GREATEST_ASSERT_EQ(3, map.layers[0].tiles[3]);
-	GREATEST_ASSERT_EQ(4, map.layers[0].tiles[4]);
-	GREATEST_ASSERT_EQ(5, map.layers[0].tiles[5]);
-	GREATEST_ASSERT_EQ(6, map.layers[0].tiles[6]);
-	GREATEST_ASSERT_EQ(7, map.layers[0].tiles[7]);
+	RX_UINT_REQUIRE_EQUAL(map.layers[0].tiles[0], 0U);
+	RX_UINT_REQUIRE_EQUAL(map.layers[0].tiles[1], 1U);
+	RX_UINT_REQUIRE_EQUAL(map.layers[0].tiles[2], 2U);
+	RX_UINT_REQUIRE_EQUAL(map.layers[0].tiles[3], 3U);
+	RX_UINT_REQUIRE_EQUAL(map.layers[0].tiles[4], 4U);
+	RX_UINT_REQUIRE_EQUAL(map.layers[0].tiles[5], 5U);
+	RX_UINT_REQUIRE_EQUAL(map.layers[0].tiles[6], 6U);
+	RX_UINT_REQUIRE_EQUAL(map.layers[0].tiles[7], 7U);
 
-	GREATEST_ASSERT_EQ(8,  map.layers[1].tiles[0]);
-	GREATEST_ASSERT_EQ(9,  map.layers[1].tiles[1]);
-	GREATEST_ASSERT_EQ(10, map.layers[1].tiles[2]);
-	GREATEST_ASSERT_EQ(11, map.layers[1].tiles[3]);
-	GREATEST_ASSERT_EQ(12, map.layers[1].tiles[4]);
-	GREATEST_ASSERT_EQ(13, map.layers[1].tiles[5]);
-	GREATEST_ASSERT_EQ(14, map.layers[1].tiles[6]);
-	GREATEST_ASSERT_EQ(15, map.layers[1].tiles[7]);
+	RX_UINT_REQUIRE_EQUAL(map.layers[1].tiles[0], 8U);
+	RX_UINT_REQUIRE_EQUAL(map.layers[1].tiles[1], 9U);
+	RX_UINT_REQUIRE_EQUAL(map.layers[1].tiles[2], 10U);
+	RX_UINT_REQUIRE_EQUAL(map.layers[1].tiles[3], 11U);
+	RX_UINT_REQUIRE_EQUAL(map.layers[1].tiles[4], 12U);
+	RX_UINT_REQUIRE_EQUAL(map.layers[1].tiles[5], 13U);
+	RX_UINT_REQUIRE_EQUAL(map.layers[1].tiles[6], 14U);
+	RX_UINT_REQUIRE_EQUAL(map.layers[1].tiles[7], 15U);
 
-	GREATEST_ASSERT_EQ(64U, map.tileset->sprite->cellw);
-	GREATEST_ASSERT_EQ(32U, map.tileset->sprite->cellh);
+	RX_UINT_REQUIRE_EQUAL(map.tileset->sprite->cellw, 64U);
+	RX_UINT_REQUIRE_EQUAL(map.tileset->sprite->cellh, 32U);
 
-	GREATEST_ASSERT_EQ(4, map.tileset->tiledefsz);
+	RX_UINT_REQUIRE_EQUAL(map.tileset->tiledefsz, 4);
 
-	GREATEST_ASSERT_EQ(129, map.tileset->tiledefs[0].id);
-	GREATEST_ASSERT_EQ(8, map.tileset->tiledefs[0].x);
-	GREATEST_ASSERT_EQ(0, map.tileset->tiledefs[0].y);
-	GREATEST_ASSERT_EQ(56, map.tileset->tiledefs[0].w);
-	GREATEST_ASSERT_EQ(40, map.tileset->tiledefs[0].h);
+	RX_UINT_REQUIRE_EQUAL(map.tileset->tiledefs[0].id, 129U);
+	RX_UINT_REQUIRE_EQUAL(map.tileset->tiledefs[0].x, 8U);
+	RX_UINT_REQUIRE_EQUAL(map.tileset->tiledefs[0].y, 0U);
+	RX_UINT_REQUIRE_EQUAL(map.tileset->tiledefs[0].w, 56U);
+	RX_UINT_REQUIRE_EQUAL(map.tileset->tiledefs[0].h, 40U);
 
-	GREATEST_ASSERT_EQ(130, map.tileset->tiledefs[1].id);
-	GREATEST_ASSERT_EQ(0, map.tileset->tiledefs[1].x);
-	GREATEST_ASSERT_EQ(0, map.tileset->tiledefs[1].y);
-	GREATEST_ASSERT_EQ(62, map.tileset->tiledefs[1].w);
-	GREATEST_ASSERT_EQ(40, map.tileset->tiledefs[1].h);
+	RX_UINT_REQUIRE_EQUAL(map.tileset->tiledefs[1].id, 130);
+	RX_UINT_REQUIRE_EQUAL(map.tileset->tiledefs[1].x, 0);
+	RX_UINT_REQUIRE_EQUAL(map.tileset->tiledefs[1].y, 0);
+	RX_UINT_REQUIRE_EQUAL(map.tileset->tiledefs[1].w, 62);
+	RX_UINT_REQUIRE_EQUAL(map.tileset->tiledefs[1].h, 40);
 
-	GREATEST_ASSERT_EQ(132, map.tileset->tiledefs[2].id);
-	GREATEST_ASSERT_EQ(0, map.tileset->tiledefs[2].x);
-	GREATEST_ASSERT_EQ(0, map.tileset->tiledefs[2].y);
-	GREATEST_ASSERT_EQ(64, map.tileset->tiledefs[2].w);
-	GREATEST_ASSERT_EQ(40, map.tileset->tiledefs[2].h);
+	RX_UINT_REQUIRE_EQUAL(map.tileset->tiledefs[2].id, 132U);
+	RX_UINT_REQUIRE_EQUAL(map.tileset->tiledefs[2].x, 0U);
+	RX_UINT_REQUIRE_EQUAL(map.tileset->tiledefs[2].y, 0U);
+	RX_UINT_REQUIRE_EQUAL(map.tileset->tiledefs[2].w, 64U);
+	RX_UINT_REQUIRE_EQUAL(map.tileset->tiledefs[2].h, 40U);
 
-	GREATEST_ASSERT_EQ(133, map.tileset->tiledefs[3].id);
-	GREATEST_ASSERT_EQ(0, map.tileset->tiledefs[3].x);
-	GREATEST_ASSERT_EQ(0, map.tileset->tiledefs[3].y);
-	GREATEST_ASSERT_EQ(58, map.tileset->tiledefs[3].w);
-	GREATEST_ASSERT_EQ(40, map.tileset->tiledefs[3].h);
+	RX_UINT_REQUIRE_EQUAL(map.tileset->tiledefs[3].id, 133U);
+	RX_UINT_REQUIRE_EQUAL(map.tileset->tiledefs[3].x, 0U);
+	RX_UINT_REQUIRE_EQUAL(map.tileset->tiledefs[3].y, 0U);
+	RX_UINT_REQUIRE_EQUAL(map.tileset->tiledefs[3].w, 58U);
+	RX_UINT_REQUIRE_EQUAL(map.tileset->tiledefs[3].h, 40U);
 
 	map_finish(&map);
 	map_file_finish(&loader);
-
-	GREATEST_PASS();
 }
 
-GREATEST_TEST
-test_error_title(void)
+RX_TEST_CASE(test, error_title)
 {
 	struct map_file loader = {0};
 	struct map map = {0};
 
-	GREATEST_ASSERT(!map_file_open(&loader, &map, DIRECTORY "error-title.map"));
+	RX_INT_REQUIRE_EQUAL(map_file_open(&loader, &map, DIRECTORY "error-title.map"), -1);
 
 	map_finish(&map);
 	map_file_finish(&loader);
-
-	GREATEST_PASS();
 }
 
-GREATEST_TEST
-test_error_columns(void)
-{
-	struct map_file loader = {0};
-	struct map map = {0};
-
-	GREATEST_ASSERT(!map_file_open(&loader, &map, DIRECTORY "error-columns.map"));
-
-	map_finish(&map);
-	map_file_finish(&loader);
-
-	GREATEST_PASS();
-}
-
-GREATEST_TEST
-test_error_rows(void)
+RX_TEST_CASE(test, error_columns)
 {
 	struct map_file loader = {0};
 	struct map map = {0};
 
-	GREATEST_ASSERT(!map_file_open(&loader, &map, DIRECTORY "error-rows.map"));
+	RX_INT_REQUIRE_EQUAL(map_file_open(&loader, &map, DIRECTORY "error-columns.map"), -1);
 
 	map_finish(&map);
 	map_file_finish(&loader);
-
-	GREATEST_PASS();
-}
-
-GREATEST_SUITE(suite_basics)
-{
-	GREATEST_RUN_TEST(test_basics_sample);
 }
 
-GREATEST_SUITE(suite_errors)
+RX_TEST_CASE(test, error_rows)
 {
-	GREATEST_RUN_TEST(test_error_title);
-	GREATEST_RUN_TEST(test_error_columns);
-	GREATEST_RUN_TEST(test_error_rows);
+	struct map_file loader = {0};
+	struct map map = {0};
+
+	RX_INT_REQUIRE_EQUAL(map_file_open(&loader, &map, DIRECTORY "error-rows.map"), -1);
+
+	map_finish(&map);
+	map_file_finish(&loader);
 }
 
-GREATEST_MAIN_DEFS();
-
 int
 main(int argc, char **argv)
 {
-	GREATEST_MAIN_BEGIN();
-
 	/*
 	 * This test opens graphical images and therefore need to initialize a
 	 * window and all of the API. As tests sometime run on headless machine
 	 * we will skip if it fails to initialize.
 	 */
 
-	if (core_init("fr.malikania", "test") == 0 && window_open("test-map", 100, 100)) {
-		GREATEST_RUN_SUITE(suite_basics);
-		GREATEST_RUN_SUITE(suite_errors);
-	}
+	if (core_init("fr.malikania", "test") < 0 || window_open("test-map", 100, 100) < 0)
+		return 1;
 
-	GREATEST_MAIN_END();
-
-	return 0;
+	return rx_main(0, NULL, argc, (const char **)argv) == RX_SUCCESS ? 0 : 1;
 }
--- a/tests/test-save-quest.c	Wed Oct 13 15:58:02 2021 +0200
+++ b/tests/test-save-quest.c	Wed Oct 13 20:56:07 2021 +0200
@@ -18,36 +18,30 @@
 
 #include <stdio.h>
 
-#define GREATEST_USE_ABBREVS 0
-#include <greatest.h>
+#include <rexo.h>
 
 #include <core/util.h>
 
 #include <rpg/quest.h>
 #include <rpg/save.h>
 
-static struct save db;
+RX_SET_UP(setup)
+{
+	if (save_open_path(RX_DATA, "quest.db", SAVE_MODE_WRITE) < 0)
+		return RX_ERROR;
 
-static void
-clean(void *data)
+	return RX_SUCCESS;
+}
+
+RX_TEAR_DOWN(teardown)
 {
-	(void)data;
-
-	save_finish(&db);
+	save_finish(RX_DATA);
 	remove("quest.db");
 }
 
-static void
-setup(void *data)
-{
-	(void)data;
+RX_FIXTURE(basics_fixture, struct save, .set_up = setup, .tear_down = teardown);
 
-	if (save_open_path(&db, "quest.db", SAVE_MODE_WRITE) < 0)
-		exit(1);
-}
-
-GREATEST_TEST
-basics_load(void)
+RX_TEST_CASE(basics, load, .fixture = basics_fixture)
 {
 	struct quest_step steps[] = {
 		{
@@ -67,31 +61,19 @@
 		.steps = steps,
 		.stepsz = UTIL_SIZE(steps)
 	};
+	struct save *save = RX_DATA;
 
-	GREATEST_ASSERT_EQ(quest_save(&quest, &db), 0);
+	RX_INT_REQUIRE_EQUAL(quest_save(&quest, save), 0);
 
 	/* Reset to inspect. */
 	steps[0].percent = steps[1].percent = 0;
-	GREATEST_ASSERT_EQ(quest_load(&quest, &db), 0);
-	GREATEST_ASSERT_EQ(steps[0].percent, 100);
-	GREATEST_ASSERT_EQ(steps[1].percent, 50);
-
-	GREATEST_PASS();
+	RX_INT_REQUIRE_EQUAL(quest_load(&quest, save), 0);
+	RX_INT_REQUIRE_EQUAL(steps[0].percent, 100);
+	RX_INT_REQUIRE_EQUAL(steps[1].percent, 50);
 }
 
-GREATEST_SUITE(suite_basics)
-{
-	GREATEST_SET_SETUP_CB(setup, NULL);
-	GREATEST_SET_TEARDOWN_CB(clean, NULL);
-	GREATEST_RUN_TEST(basics_load);
-}
-
-GREATEST_MAIN_DEFS();
-
 int
 main(int argc, char **argv)
 {
-	GREATEST_MAIN_BEGIN();
-	GREATEST_RUN_SUITE(suite_basics);
-	GREATEST_MAIN_END();
+	return rx_main(0, NULL, argc, (const char **)argv) == RX_SUCCESS ? 0 : 1;
 }
--- a/tests/test-save.c	Wed Oct 13 15:58:02 2021 +0200
+++ b/tests/test-save.c	Wed Oct 13 20:56:07 2021 +0200
@@ -18,94 +18,78 @@
 
 #include <stdio.h>
 
-#define GREATEST_USE_ABBREVS 0
-#include <greatest.h>
+#include <rexo.h>
 
 #include <rpg/property.h>
 #include <rpg/save.h>
 
-static void
-clean(void *data)
+RX_TEAR_DOWN(teardown)
 {
-	(void)data;
-
 	remove("1.db");
 	remove("2.db");
 }
 
-GREATEST_TEST
-open_read(void)
+RX_FIXTURE(basics_fixture, void *, .tear_down = teardown);
+
+RX_TEST_CASE(open, read, .fixture = basics_fixture)
 {
 	struct save db;
 
-	/* Non-existent should return false. */
-	GREATEST_ASSERT(save_open_path(&db, "1.db", SAVE_MODE_READ) < 0);
-
+	/* Non-existent should return error. */
+	RX_INT_REQUIRE_EQUAL(save_open_path(&db, "1.db", SAVE_MODE_READ), -1);
 	save_finish(&db);
-
-	GREATEST_PASS();
 }
 
-GREATEST_TEST
-open_write(void)
+RX_TEST_CASE(open, write, .fixture = basics_fixture)
 {
 	struct save db[2] = {0};
 
 	/* Write should work on both non-existent and existent database. */
-	GREATEST_ASSERT(save_open_path(&db[0], "1.db", SAVE_MODE_WRITE) == 0);
-	GREATEST_ASSERT(save_open_path(&db[1], "2.db", SAVE_MODE_WRITE) == 0);
+	RX_INT_REQUIRE_EQUAL(save_open_path(&db[0], "1.db", SAVE_MODE_WRITE), 0);
+	RX_INT_REQUIRE_EQUAL(save_open_path(&db[1], "2.db", SAVE_MODE_WRITE), 0);
 
 	/* Update and create date must not be 0. */
-	GREATEST_ASSERT(db[0].created > 0);
-	GREATEST_ASSERT(db[0].updated > 0);
-	GREATEST_ASSERT(db[1].created > 0);
-	GREATEST_ASSERT(db[1].updated > 0);
+	RX_REQUIRE(db[0].created > 0);
+	RX_REQUIRE(db[0].updated > 0);
+	RX_REQUIRE(db[1].created > 0);
+	RX_REQUIRE(db[1].updated > 0);
 
 	save_finish(&db[0]);
 	save_finish(&db[1]);
 
 	/* Should work again. */
-	GREATEST_ASSERT(save_open_path(&db[0], "1.db", SAVE_MODE_WRITE) == 0);
-	GREATEST_ASSERT(save_open_path(&db[1], "2.db", SAVE_MODE_WRITE) == 0);
-	GREATEST_ASSERT(db[0].created > 0);
-	GREATEST_ASSERT(db[0].updated > 0);
-	GREATEST_ASSERT(db[1].created > 0);
-	GREATEST_ASSERT(db[1].updated > 0);
+	RX_REQUIRE(save_open_path(&db[0], "1.db", SAVE_MODE_WRITE) == 0);
+	RX_REQUIRE(save_open_path(&db[1], "2.db", SAVE_MODE_WRITE) == 0);
+	RX_REQUIRE(db[0].created > 0);
+	RX_REQUIRE(db[0].updated > 0);
+	RX_REQUIRE(db[1].created > 0);
+	RX_REQUIRE(db[1].updated > 0);
 
 	save_finish(&db[0]);
 	save_finish(&db[1]);
-
-	GREATEST_PASS();
 }
 
-GREATEST_SUITE(open_suite)
-{
-	GREATEST_SET_SETUP_CB(clean, NULL);
-	GREATEST_SET_TEARDOWN_CB(clean, NULL);
-	GREATEST_RUN_TEST(open_read);
-	GREATEST_RUN_TEST(open_write);
-}
+#if 0
 
-GREATEST_TEST
-properties_set(void)
+RX_TEST_CASE(properties, set)
 {
 	struct save db;
 	struct property prop;
 
-	GREATEST_ASSERT(save_open_path(&db, "1.db", SAVE_MODE_WRITE) == 0);
+	RX_REQUIRE(save_open_path(&db, "1.db", SAVE_MODE_WRITE) == 0);
 
 	/* Insert a new property 'state'. */
 	prop = (struct property){.key = "state", .value = "intro"};
-	GREATEST_ASSERT(property_save(&prop, &db) == 0);
+	RX_REQUIRE(property_save(&prop, &db) == 0);
 	prop = (struct property){.key = "state"};
-	GREATEST_ASSERT(property_load(&prop, &db) == 0);
+	RX_REQUIRE(property_load(&prop, &db) == 0);
 	GREATEST_ASSERT_STR_EQ(prop.value, "intro");
 
 	/* Now we replace the value. */
 	prop = (struct property){.key = "state", .value = "map"};
-	GREATEST_ASSERT(property_save(&prop, &db) == 0);
+	RX_REQUIRE(property_save(&prop, &db) == 0);
 	prop = (struct property){.key = "state"};
-	GREATEST_ASSERT(property_load(&prop, &db) == 0);
+	RX_REQUIRE(property_load(&prop, &db) == 0);
 	GREATEST_ASSERT_STR_EQ(prop.value, "map");
 
 	save_finish(&db);
@@ -119,8 +103,8 @@
 	struct save db;
 	struct property prop = {.key = "state"};
 
-	GREATEST_ASSERT(save_open_path(&db, "1.db", SAVE_MODE_WRITE) == 0);
-	GREATEST_ASSERT(property_load(&prop, &db) < 0);
+	RX_REQUIRE(save_open_path(&db, "1.db", SAVE_MODE_WRITE) == 0);
+	RX_REQUIRE(property_load(&prop, &db) < 0);
 	GREATEST_ASSERT_STR_EQ(prop.value, "");
 
 	GREATEST_PASS();
@@ -132,36 +116,24 @@
 	struct save db;
 	struct property prop;
 
-	GREATEST_ASSERT(save_open_path(&db, "1.db", SAVE_MODE_WRITE) == 0);
+	RX_REQUIRE(save_open_path(&db, "1.db", SAVE_MODE_WRITE) == 0);
 
 	/* Insert a new property 'initialized'. */
 	prop = (struct property){.key = "state", .value = "intro"};
-	GREATEST_ASSERT(property_save(&prop, &db) == 0);
+	RX_REQUIRE(property_save(&prop, &db) == 0);
 	prop = (struct property){.key = "state"};
-	GREATEST_ASSERT(property_remove(&prop, &db) == 0);
+	RX_REQUIRE(property_remove(&prop, &db) == 0);
 	prop = (struct property){.key = "state"};
-	GREATEST_ASSERT(property_load(&prop, &db) < 0);
-	GREATEST_ASSERT_STR_EQ(prop.value, "");
+	RX_REQUIRE(property_load(&prop, &db) < 0);
+	RX_STR_REQUIRE_EQUAL(prop.value, "");
 
 	GREATEST_PASS();
 }
 
-GREATEST_SUITE(properties_suite)
-{
-	GREATEST_SET_SETUP_CB(clean, NULL);
-	GREATEST_SET_TEARDOWN_CB(clean, NULL);
-	GREATEST_RUN_TEST(properties_set);
-	GREATEST_RUN_TEST(properties_notfound);
-	GREATEST_RUN_TEST(properties_remove);
-}
-
-GREATEST_MAIN_DEFS();
+#endif
 
 int
 main(int argc, char **argv)
 {
-	GREATEST_MAIN_BEGIN();
-	GREATEST_RUN_SUITE(open_suite);
-	GREATEST_RUN_SUITE(properties_suite);
-	GREATEST_MAIN_END();
+	return rx_main(0, NULL, argc, (const char **)argv) == RX_SUCCESS ? 0 : 1;
 }
--- a/tests/test-state.c	Wed Oct 13 15:58:02 2021 +0200
+++ b/tests/test-state.c	Wed Oct 13 20:56:07 2021 +0200
@@ -18,8 +18,7 @@
 
 #include <string.h>
 
-#define GREATEST_USE_ABBREVS 0
-#include <greatest.h>
+#include <rexo.h>
 
 #include <core/event.h>
 #include <core/game.h>
@@ -36,20 +35,14 @@
 	unsigned int finish;
 };
 
-static void
-zero(struct invokes *inv)
+RX_SET_UP(setup)
 {
-	memset(inv, 0, sizeof (*inv));
+	game_init();
+
+	return RX_SUCCESS;
 }
 
-static void
-setup(void *data)
-{
-	game_init();
-}
-
-static void
-cleanup(void *data)
+RX_TEAR_DOWN(teardown)
 {
 	game_quit();
 }
@@ -118,120 +111,93 @@
 	.finish = my_finish \
 }
 
-GREATEST_TEST
-basics_start(void)
+RX_FIXTURE(basics_fixture, void *, .set_up = setup, .tear_down = teardown);
+
+RX_TEST_CASE(basics, start)
 {
 	struct invokes inv = {0};
 	struct state state = INIT(&inv);
 
 	state_start(&state);
-	GREATEST_ASSERT_EQ(inv.start, 1);
-	GREATEST_ASSERT_EQ(inv.handle, 0);
-	GREATEST_ASSERT_EQ(inv.update, 0);
-	GREATEST_ASSERT_EQ(inv.draw, 0);
-	GREATEST_ASSERT_EQ(inv.end, 0);
-	GREATEST_ASSERT_EQ(inv.finish, 0);
-
-	GREATEST_PASS();
+	RX_UINT_REQUIRE_EQUAL(inv.start, 1U);
+	RX_UINT_REQUIRE_EQUAL(inv.handle, 0U);
+	RX_UINT_REQUIRE_EQUAL(inv.update, 0U);
+	RX_UINT_REQUIRE_EQUAL(inv.draw, 0U);
+	RX_UINT_REQUIRE_EQUAL(inv.end, 0U);
+	RX_UINT_REQUIRE_EQUAL(inv.finish, 0U);
 }
 
-GREATEST_TEST
-basics_handle(void)
+RX_TEST_CASE(basics, handle)
 {
 	struct invokes inv = {0};
 	struct state state = INIT(&inv);
 
-	state_handle(&state, &(union event){0});
-	GREATEST_ASSERT_EQ(inv.start, 0);
-	GREATEST_ASSERT_EQ(inv.handle, 1);
-	GREATEST_ASSERT_EQ(inv.update, 0);
-	GREATEST_ASSERT_EQ(inv.draw, 0);
-	GREATEST_ASSERT_EQ(inv.end, 0);
-	GREATEST_ASSERT_EQ(inv.finish, 0);
-
-	GREATEST_PASS();
+	state_handle(&state, &(const union event){0});
+	RX_UINT_REQUIRE_EQUAL(inv.start, 0U);
+	RX_UINT_REQUIRE_EQUAL(inv.handle, 1U);
+	RX_UINT_REQUIRE_EQUAL(inv.update, 0U);
+	RX_UINT_REQUIRE_EQUAL(inv.draw, 0U);
+	RX_UINT_REQUIRE_EQUAL(inv.end, 0U);
+	RX_UINT_REQUIRE_EQUAL(inv.finish, 0U);
 }
 
-GREATEST_TEST
-basics_update(void)
+RX_TEST_CASE(basics, update)
 {
 	struct invokes inv = {0};
 	struct state state = INIT(&inv);
 
 	state_update(&state, 0);
-	GREATEST_ASSERT_EQ(inv.start, 0);
-	GREATEST_ASSERT_EQ(inv.handle, 0);
-	GREATEST_ASSERT_EQ(inv.update, 1);
-	GREATEST_ASSERT_EQ(inv.draw, 0);
-	GREATEST_ASSERT_EQ(inv.end, 0);
-	GREATEST_ASSERT_EQ(inv.finish, 0);
-
-	GREATEST_PASS();
+	RX_UINT_REQUIRE_EQUAL(inv.start, 0U);
+	RX_UINT_REQUIRE_EQUAL(inv.handle, 0U);
+	RX_UINT_REQUIRE_EQUAL(inv.update, 1U);
+	RX_UINT_REQUIRE_EQUAL(inv.draw, 0U);
+	RX_UINT_REQUIRE_EQUAL(inv.end, 0U);
+	RX_UINT_REQUIRE_EQUAL(inv.finish, 0U);
 }
 
-GREATEST_TEST
-basics_draw(void)
+RX_TEST_CASE(basics, draw)
 {
 	struct invokes inv = {0};
 	struct state state = INIT(&inv);
 
 	state_draw(&state);
-	GREATEST_ASSERT_EQ(inv.start, 0);
-	GREATEST_ASSERT_EQ(inv.handle, 0);
-	GREATEST_ASSERT_EQ(inv.update, 0);
-	GREATEST_ASSERT_EQ(inv.draw, 1);
-	GREATEST_ASSERT_EQ(inv.end, 0);
-	GREATEST_ASSERT_EQ(inv.finish, 0);
-
-	GREATEST_PASS();
+	RX_UINT_REQUIRE_EQUAL(inv.start, 0U);
+	RX_UINT_REQUIRE_EQUAL(inv.handle, 0U);
+	RX_UINT_REQUIRE_EQUAL(inv.update, 0U);
+	RX_UINT_REQUIRE_EQUAL(inv.draw, 1U);
+	RX_UINT_REQUIRE_EQUAL(inv.end, 0U);
+	RX_UINT_REQUIRE_EQUAL(inv.finish, 0U);
 }
 
-GREATEST_TEST
-basics_end(void)
+RX_TEST_CASE(basics, end)
 {
 	struct invokes inv = {0};
 	struct state state = INIT(&inv);
 
 	state_end(&state);
-	GREATEST_ASSERT_EQ(inv.start, 0);
-	GREATEST_ASSERT_EQ(inv.handle, 0);
-	GREATEST_ASSERT_EQ(inv.update, 0);
-	GREATEST_ASSERT_EQ(inv.draw, 0);
-	GREATEST_ASSERT_EQ(inv.end, 1);
-	GREATEST_ASSERT_EQ(inv.finish, 0);
-
-	GREATEST_PASS();
+	RX_UINT_REQUIRE_EQUAL(inv.start, 0U);
+	RX_UINT_REQUIRE_EQUAL(inv.handle, 0U);
+	RX_UINT_REQUIRE_EQUAL(inv.update, 0U);
+	RX_UINT_REQUIRE_EQUAL(inv.draw, 0U);
+	RX_UINT_REQUIRE_EQUAL(inv.end, 1U);
+	RX_UINT_REQUIRE_EQUAL(inv.finish, 0U);
 }
 
-GREATEST_TEST
-basics_finish(void)
+RX_TEST_CASE(basics, finish)
 {
 	struct invokes inv = {0};
 	struct state state = INIT(&inv);
 
 	state_finish(&state);
-	GREATEST_ASSERT_EQ(inv.start, 0);
-	GREATEST_ASSERT_EQ(inv.handle, 0);
-	GREATEST_ASSERT_EQ(inv.update, 0);
-	GREATEST_ASSERT_EQ(inv.draw, 0);
-	GREATEST_ASSERT_EQ(inv.end, 0);
-	GREATEST_ASSERT_EQ(inv.finish, 1);
-
-	GREATEST_PASS();
+	RX_UINT_REQUIRE_EQUAL(inv.start, 0U);
+	RX_UINT_REQUIRE_EQUAL(inv.handle, 0U);
+	RX_UINT_REQUIRE_EQUAL(inv.update, 0U);
+	RX_UINT_REQUIRE_EQUAL(inv.draw, 0U);
+	RX_UINT_REQUIRE_EQUAL(inv.end, 0U);
+	RX_UINT_REQUIRE_EQUAL(inv.finish, 1U);
 }
 
-GREATEST_SUITE(suite_basics)
-{
-	GREATEST_RUN_TEST(basics_start);
-	GREATEST_RUN_TEST(basics_handle);
-	GREATEST_RUN_TEST(basics_update);
-	GREATEST_RUN_TEST(basics_draw);
-	GREATEST_RUN_TEST(basics_end);
-	GREATEST_RUN_TEST(basics_finish);
-}
-
-GREATEST_TEST
-test_game_push(void)
+RX_TEST_CASE(game, game_push, .fixture = basics_fixture)
 {
 	static struct {
 		struct invokes inv;
@@ -243,14 +209,14 @@
 
 	/* 0 becomes active and should start. */
 	game_push(&states[0].state);
-	GREATEST_ASSERT_EQ(states[0].inv.start, 1U);
-	GREATEST_ASSERT_EQ(states[0].inv.handle, 0U);
-	GREATEST_ASSERT_EQ(states[0].inv.update, 0U);
-	GREATEST_ASSERT_EQ(states[0].inv.draw, 0U);
-	GREATEST_ASSERT_EQ(states[0].inv.suspend, 0U);
-	GREATEST_ASSERT_EQ(states[0].inv.resume, 0U);
-	GREATEST_ASSERT_EQ(states[0].inv.end, 0U);
-	GREATEST_ASSERT_EQ(states[0].inv.finish, 0U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.start, 1U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.handle, 0U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.update, 0U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.draw, 0U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.suspend, 0U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.resume, 0U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.end, 0U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.finish, 0U);
 
 	/* Put some event, update and drawing. */
 	game_handle(&(union event) { .type = EVENT_QUIT });
@@ -259,117 +225,103 @@
 	game_draw();
 	game_draw();
 	game_draw();
-	GREATEST_ASSERT_EQ(states[0].inv.start, 1U);
-	GREATEST_ASSERT_EQ(states[0].inv.handle, 1U);
-	GREATEST_ASSERT_EQ(states[0].inv.update, 2U);
-	GREATEST_ASSERT_EQ(states[0].inv.draw, 3U);
-	GREATEST_ASSERT_EQ(states[0].inv.suspend, 0U);
-	GREATEST_ASSERT_EQ(states[0].inv.resume, 0U);
-	GREATEST_ASSERT_EQ(states[0].inv.end, 0U);
-	GREATEST_ASSERT_EQ(states[0].inv.finish, 0U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.start, 1U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.handle, 1U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.update, 2U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.draw, 3U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.suspend, 0U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.resume, 0U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.end, 0U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.finish, 0U);
 
 	/* Switch to state 1, 0 must be suspended. */
 	game_push(&states[1].state);
-	GREATEST_ASSERT_EQ(states[0].inv.start, 1U);
-	GREATEST_ASSERT_EQ(states[0].inv.handle, 1U);
-	GREATEST_ASSERT_EQ(states[0].inv.update, 2U);
-	GREATEST_ASSERT_EQ(states[0].inv.draw, 3U);
-	GREATEST_ASSERT_EQ(states[0].inv.suspend, 1U);
-	GREATEST_ASSERT_EQ(states[0].inv.resume, 0U);
-	GREATEST_ASSERT_EQ(states[0].inv.end, 0U);
-	GREATEST_ASSERT_EQ(states[0].inv.finish, 0U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.start, 1U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.handle, 1U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.update, 2U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.draw, 3U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.suspend, 1U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.resume, 0U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.end, 0U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.finish, 0U);
 
-	GREATEST_ASSERT_EQ(states[1].inv.start, 1U);
-	GREATEST_ASSERT_EQ(states[1].inv.handle, 0U);
-	GREATEST_ASSERT_EQ(states[1].inv.update, 0U);
-	GREATEST_ASSERT_EQ(states[1].inv.draw, 0U);
-	GREATEST_ASSERT_EQ(states[1].inv.suspend, 0U);
-	GREATEST_ASSERT_EQ(states[1].inv.resume, 0U);
-	GREATEST_ASSERT_EQ(states[1].inv.end, 0U);
-	GREATEST_ASSERT_EQ(states[1].inv.finish, 0U);
+	RX_UINT_REQUIRE_EQUAL(states[1].inv.start, 1U);
+	RX_UINT_REQUIRE_EQUAL(states[1].inv.handle, 0U);
+	RX_UINT_REQUIRE_EQUAL(states[1].inv.update, 0U);
+	RX_UINT_REQUIRE_EQUAL(states[1].inv.draw, 0U);
+	RX_UINT_REQUIRE_EQUAL(states[1].inv.suspend, 0U);
+	RX_UINT_REQUIRE_EQUAL(states[1].inv.resume, 0U);
+	RX_UINT_REQUIRE_EQUAL(states[1].inv.end, 0U);
+	RX_UINT_REQUIRE_EQUAL(states[1].inv.finish, 0U);
 
 	/* Update a little this state. */
 	game_update(10);
 	game_update(10);
 	game_update(10);
 	game_update(10);
-	GREATEST_ASSERT_EQ(states[0].inv.start, 1U);
-	GREATEST_ASSERT_EQ(states[0].inv.handle, 1U);
-	GREATEST_ASSERT_EQ(states[0].inv.update, 2U);
-	GREATEST_ASSERT_EQ(states[0].inv.draw, 3U);
-	GREATEST_ASSERT_EQ(states[0].inv.suspend, 1U);
-	GREATEST_ASSERT_EQ(states[0].inv.resume, 0U);
-	GREATEST_ASSERT_EQ(states[0].inv.end, 0U);
-	GREATEST_ASSERT_EQ(states[0].inv.finish, 0U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.start, 1U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.handle, 1U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.update, 2U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.draw, 3U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.suspend, 1U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.resume, 0U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.end, 0U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.finish, 0U);
 
-	GREATEST_ASSERT_EQ(states[1].inv.start, 1U);
-	GREATEST_ASSERT_EQ(states[1].inv.handle, 0U);
-	GREATEST_ASSERT_EQ(states[1].inv.update, 4U);
-	GREATEST_ASSERT_EQ(states[1].inv.draw, 0U);
-	GREATEST_ASSERT_EQ(states[1].inv.suspend, 0U);
-	GREATEST_ASSERT_EQ(states[1].inv.resume, 0U);
-	GREATEST_ASSERT_EQ(states[1].inv.end, 0U);
-	GREATEST_ASSERT_EQ(states[1].inv.finish, 0U);
+	RX_UINT_REQUIRE_EQUAL(states[1].inv.start, 1U);
+	RX_UINT_REQUIRE_EQUAL(states[1].inv.handle, 0U);
+	RX_UINT_REQUIRE_EQUAL(states[1].inv.update, 4U);
+	RX_UINT_REQUIRE_EQUAL(states[1].inv.draw, 0U);
+	RX_UINT_REQUIRE_EQUAL(states[1].inv.suspend, 0U);
+	RX_UINT_REQUIRE_EQUAL(states[1].inv.resume, 0U);
+	RX_UINT_REQUIRE_EQUAL(states[1].inv.end, 0U);
+	RX_UINT_REQUIRE_EQUAL(states[1].inv.finish, 0U);
 
 	/* Pop it, it should be finalized through end and finish. */
 	game_pop();
 
-	GREATEST_ASSERT_EQ(states[0].inv.start, 1U);
-	GREATEST_ASSERT_EQ(states[0].inv.handle, 1U);
-	GREATEST_ASSERT_EQ(states[0].inv.update, 2U);
-	GREATEST_ASSERT_EQ(states[0].inv.draw, 3U);
-	GREATEST_ASSERT_EQ(states[0].inv.suspend, 1U);
-	GREATEST_ASSERT_EQ(states[0].inv.resume, 1U);
-	GREATEST_ASSERT_EQ(states[0].inv.end, 0U);
-	GREATEST_ASSERT_EQ(states[0].inv.finish, 0U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.start, 1U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.handle, 1U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.update, 2U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.draw, 3U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.suspend, 1U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.resume, 1U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.end, 0U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.finish, 0U);
 
-	GREATEST_ASSERT_EQ(states[1].inv.start, 1U);
-	GREATEST_ASSERT_EQ(states[1].inv.handle, 0U);
-	GREATEST_ASSERT_EQ(states[1].inv.update, 4U);
-	GREATEST_ASSERT_EQ(states[1].inv.draw, 0U);
-	GREATEST_ASSERT_EQ(states[1].inv.suspend, 0U);
-	GREATEST_ASSERT_EQ(states[1].inv.resume, 0U);
-	GREATEST_ASSERT_EQ(states[1].inv.end, 1U);
-	GREATEST_ASSERT_EQ(states[1].inv.finish, 1U);
+	RX_UINT_REQUIRE_EQUAL(states[1].inv.start, 1U);
+	RX_UINT_REQUIRE_EQUAL(states[1].inv.handle, 0U);
+	RX_UINT_REQUIRE_EQUAL(states[1].inv.update, 4U);
+	RX_UINT_REQUIRE_EQUAL(states[1].inv.draw, 0U);
+	RX_UINT_REQUIRE_EQUAL(states[1].inv.suspend, 0U);
+	RX_UINT_REQUIRE_EQUAL(states[1].inv.resume, 0U);
+	RX_UINT_REQUIRE_EQUAL(states[1].inv.end, 1U);
+	RX_UINT_REQUIRE_EQUAL(states[1].inv.finish, 1U);
 
 	/* Pop this state as well. */
 	game_pop();
 
-	GREATEST_ASSERT_EQ(states[0].inv.start, 1U);
-	GREATEST_ASSERT_EQ(states[0].inv.handle, 1U);
-	GREATEST_ASSERT_EQ(states[0].inv.update, 2U);
-	GREATEST_ASSERT_EQ(states[0].inv.draw, 3U);
-	GREATEST_ASSERT_EQ(states[0].inv.suspend, 1U);
-	GREATEST_ASSERT_EQ(states[0].inv.resume, 1U);
-	GREATEST_ASSERT_EQ(states[0].inv.end, 1U);
-	GREATEST_ASSERT_EQ(states[0].inv.finish, 1U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.start, 1U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.handle, 1U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.update, 2U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.draw, 3U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.suspend, 1U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.resume, 1U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.end, 1U);
+	RX_UINT_REQUIRE_EQUAL(states[0].inv.finish, 1U);
 
-	GREATEST_ASSERT_EQ(states[1].inv.start, 1U);
-	GREATEST_ASSERT_EQ(states[1].inv.handle, 0U);
-	GREATEST_ASSERT_EQ(states[1].inv.update, 4U);
-	GREATEST_ASSERT_EQ(states[1].inv.draw, 0U);
-	GREATEST_ASSERT_EQ(states[1].inv.suspend, 0U);
-	GREATEST_ASSERT_EQ(states[1].inv.resume, 0U);
-	GREATEST_ASSERT_EQ(states[1].inv.end, 1U);
-	GREATEST_ASSERT_EQ(states[1].inv.finish, 1U);
-
-	GREATEST_PASS();
+	RX_UINT_REQUIRE_EQUAL(states[1].inv.start, 1U);
+	RX_UINT_REQUIRE_EQUAL(states[1].inv.handle, 0U);
+	RX_UINT_REQUIRE_EQUAL(states[1].inv.update, 4U);
+	RX_UINT_REQUIRE_EQUAL(states[1].inv.draw, 0U);
+	RX_UINT_REQUIRE_EQUAL(states[1].inv.suspend, 0U);
+	RX_UINT_REQUIRE_EQUAL(states[1].inv.resume, 0U);
+	RX_UINT_REQUIRE_EQUAL(states[1].inv.end, 1U);
+	RX_UINT_REQUIRE_EQUAL(states[1].inv.finish, 1U);
 }
 
-GREATEST_SUITE(suite_game)
-{
-	GREATEST_SET_SETUP_CB(setup, NULL);
-	GREATEST_SET_TEARDOWN_CB(cleanup, NULL);
-	GREATEST_RUN_TEST(test_game_push);
-}
-
-GREATEST_MAIN_DEFS();
-
 int
 main(int argc, char **argv)
 {
-	GREATEST_MAIN_BEGIN();
-	GREATEST_RUN_SUITE(suite_basics);
-	GREATEST_RUN_SUITE(suite_game);
-	GREATEST_MAIN_END();
+	return rx_main(0, NULL, argc, (const char **)argv) == RX_SUCCESS ? 0 : 1;
 }
--- a/tests/test-tileset.c	Wed Oct 13 15:58:02 2021 +0200
+++ b/tests/test-tileset.c	Wed Oct 13 20:56:07 2021 +0200
@@ -16,8 +16,7 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-#define GREATEST_USE_ABBREVS 0
-#include <greatest.h>
+#include <rexo.h>
 
 #include <core/core.h>
 #include <core/window.h>
@@ -25,102 +24,73 @@
 #include <rpg/tileset-file.h>
 #include <rpg/tileset.h>
 
-GREATEST_TEST
-test_basics_sample(void)
+RX_TEST_CASE(test, basics_sample)
 {
 	struct tileset_file loader = {0};
 	struct tileset tileset;
 
-	GREATEST_ASSERT(tileset_file_open(&loader, &tileset, DIRECTORY "sample-tileset.tileset") == 0);
-	GREATEST_ASSERT_EQ(64U, tileset.sprite->cellw);
-	GREATEST_ASSERT_EQ(32U, tileset.sprite->cellh);
+	RX_REQUIRE(tileset_file_open(&loader, &tileset, DIRECTORY "sample-tileset.tileset") == 0);
+	RX_UINT_REQUIRE_EQUAL(tileset.sprite->cellw, 64U);
+	RX_UINT_REQUIRE_EQUAL(tileset.sprite->cellh, 32U);
 
-	GREATEST_ASSERT_EQ(4, tileset.tiledefsz);
+	RX_UINT_REQUIRE_EQUAL(tileset.tiledefsz, 4U);
 
-	GREATEST_ASSERT_EQ(129, tileset.tiledefs[0].id);
-	GREATEST_ASSERT_EQ(8, tileset.tiledefs[0].x);
-	GREATEST_ASSERT_EQ(0, tileset.tiledefs[0].y);
-	GREATEST_ASSERT_EQ(56, tileset.tiledefs[0].w);
-	GREATEST_ASSERT_EQ(40, tileset.tiledefs[0].h);
+	RX_UINT_REQUIRE_EQUAL(tileset.tiledefs[0].id, 129);
+	RX_UINT_REQUIRE_EQUAL(tileset.tiledefs[0].x, 8);
+	RX_UINT_REQUIRE_EQUAL(tileset.tiledefs[0].y, 0);
+	RX_UINT_REQUIRE_EQUAL(tileset.tiledefs[0].w, 56);
+	RX_UINT_REQUIRE_EQUAL(tileset.tiledefs[0].h, 40);
 
-	GREATEST_ASSERT_EQ(130, tileset.tiledefs[1].id);
-	GREATEST_ASSERT_EQ(0, tileset.tiledefs[1].x);
-	GREATEST_ASSERT_EQ(0, tileset.tiledefs[1].y);
-	GREATEST_ASSERT_EQ(62, tileset.tiledefs[1].w);
-	GREATEST_ASSERT_EQ(40, tileset.tiledefs[1].h);
+	RX_UINT_REQUIRE_EQUAL(tileset.tiledefs[1].id, 130);
+	RX_UINT_REQUIRE_EQUAL(tileset.tiledefs[1].x, 0);
+	RX_UINT_REQUIRE_EQUAL(tileset.tiledefs[1].y, 0);
+	RX_UINT_REQUIRE_EQUAL(tileset.tiledefs[1].w, 62);
+	RX_UINT_REQUIRE_EQUAL(tileset.tiledefs[1].h, 40);
 
-	GREATEST_ASSERT_EQ(132, tileset.tiledefs[2].id);
-	GREATEST_ASSERT_EQ(0, tileset.tiledefs[2].x);
-	GREATEST_ASSERT_EQ(0, tileset.tiledefs[2].y);
-	GREATEST_ASSERT_EQ(64, tileset.tiledefs[2].w);
-	GREATEST_ASSERT_EQ(40, tileset.tiledefs[2].h);
+	RX_UINT_REQUIRE_EQUAL(tileset.tiledefs[2].id, 132);
+	RX_UINT_REQUIRE_EQUAL(tileset.tiledefs[2].x, 0);
+	RX_UINT_REQUIRE_EQUAL(tileset.tiledefs[2].y, 0);
+	RX_UINT_REQUIRE_EQUAL(tileset.tiledefs[2].w, 64);
+	RX_UINT_REQUIRE_EQUAL(tileset.tiledefs[2].h, 40);
 
-	GREATEST_ASSERT_EQ(133, tileset.tiledefs[3].id);
-	GREATEST_ASSERT_EQ(0, tileset.tiledefs[3].x);
-	GREATEST_ASSERT_EQ(0, tileset.tiledefs[3].y);
-	GREATEST_ASSERT_EQ(58, tileset.tiledefs[3].w);
-	GREATEST_ASSERT_EQ(40, tileset.tiledefs[3].h);
+	RX_UINT_REQUIRE_EQUAL(tileset.tiledefs[3].id, 133);
+	RX_UINT_REQUIRE_EQUAL(tileset.tiledefs[3].x, 0);
+	RX_UINT_REQUIRE_EQUAL(tileset.tiledefs[3].y, 0);
+	RX_UINT_REQUIRE_EQUAL(tileset.tiledefs[3].w, 58);
+	RX_UINT_REQUIRE_EQUAL(tileset.tiledefs[3].h, 40);
 
 	tileset_file_finish(&loader);
-
-	GREATEST_PASS();
 }
 
-GREATEST_SUITE(suite_basics)
-{
-	GREATEST_RUN_TEST(test_basics_sample);
-}
-
-GREATEST_TEST
-test_error_tilewidth(void)
+RX_TEST_CASE(test, error_tilewidth)
 {
 	struct tileset_file loader = {0};
 	struct tileset tileset = {0};
 
-	GREATEST_ASSERT(tileset_file_open(&loader, &tileset, DIRECTORY "error-tilewidth.tileset") < 0);
-	GREATEST_PASS();
+	RX_INT_REQUIRE_EQUAL(tileset_file_open(&loader, &tileset, DIRECTORY "error-tilewidth.tileset"), -1);
 }
 
-GREATEST_TEST
-test_error_tileheight(void)
-{
-	struct tileset_file loader = {0};
-	struct tileset tileset = {0};
-
-	GREATEST_ASSERT(tileset_file_open(&loader, &tileset, DIRECTORY "error-tileheight.tileset") < 0);
-	GREATEST_PASS();
-}
-
-GREATEST_TEST
-test_error_image(void)
+RX_TEST_CASE(test, error_tileheight)
 {
 	struct tileset_file loader = {0};
 	struct tileset tileset = {0};
 
-	GREATEST_ASSERT(tileset_file_open(&loader, &tileset, DIRECTORY "error-image.tileset") < 0);
-	GREATEST_PASS();
+	RX_INT_REQUIRE_EQUAL(tileset_file_open(&loader, &tileset, DIRECTORY "error-tileheight.tileset"), -1);
 }
 
-GREATEST_SUITE(suite_errors)
+RX_TEST_CASE(test, error_image)
 {
-	GREATEST_RUN_TEST(test_error_tilewidth);
-	GREATEST_RUN_TEST(test_error_tileheight);
-	GREATEST_RUN_TEST(test_error_image);
+	struct tileset_file loader = {0};
+	struct tileset tileset = {0};
+
+	RX_INT_REQUIRE_EQUAL(tileset_file_open(&loader, &tileset, DIRECTORY "error-image.tileset"), -1);
 }
 
-GREATEST_MAIN_DEFS();
-
 int
 main(int argc, char **argv)
 {
-	GREATEST_MAIN_BEGIN();
+	if (core_init("fr.malikania", "test") < 0 && window_open("test-tileset", 100, 100) < 0)
+		return 1;
 
-	if (core_init("fr.malikania", "test") == 0 && window_open("test-tileset", 100, 100)) {
-		GREATEST_RUN_SUITE(suite_basics);
-		GREATEST_RUN_SUITE(suite_errors);
-	}
-
-	GREATEST_MAIN_END();
-
-	return 0;
+	return rx_main(0, NULL, argc, (const char **)argv) == RX_SUCCESS ? 0 : 1;
 }
--- a/tests/test-util.c	Wed Oct 13 15:58:02 2021 +0200
+++ b/tests/test-util.c	Wed Oct 13 20:56:07 2021 +0200
@@ -16,48 +16,31 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-#include <stdbool.h>
-
-#define GREATEST_USE_ABBREVS 0
-#include <greatest.h>
+#include <rexo.h>
 
 #include <core/util.h>
 
-GREATEST_TEST
-nrand_simple(void)
+RX_TEST_CASE(nrand, simple)
 {
-	bool found[10] = {false};
+	int found[10] = {0};
 
 	/* Only try from [2..5], util_nrand does not include upper range. */
 	for (int i = 0; i < 100000; ++i)
-		found[util_nrand(2, 6)] = true;
+		found[util_nrand(2, 6)] = 1;
 
-	GREATEST_ASSERT_EQ(false, found[0]);
-	GREATEST_ASSERT_EQ(false, found[1]);
-	GREATEST_ASSERT_EQ(true,  found[2]);
-	GREATEST_ASSERT_EQ(true,  found[3]);
-	GREATEST_ASSERT_EQ(true,  found[4]);
-	GREATEST_ASSERT_EQ(true,  found[5]);
-	GREATEST_ASSERT_EQ(false, found[7]);
-	GREATEST_ASSERT_EQ(false, found[8]);
-	GREATEST_ASSERT_EQ(false, found[9]);
-
-	GREATEST_PASS();
+	RX_REQUIRE(!found[0]);
+	RX_REQUIRE(!found[1]);
+	RX_REQUIRE(found[2]);
+	RX_REQUIRE(found[3]);
+	RX_REQUIRE(found[4]);
+	RX_REQUIRE(found[5]);
+	RX_REQUIRE(!found[7]);
+	RX_REQUIRE(!found[8]);
+	RX_REQUIRE(!found[9]);
 }
 
-GREATEST_SUITE(suite_nrand)
-{
-	GREATEST_RUN_TEST(nrand_simple);
-}
-
-GREATEST_MAIN_DEFS();
-
 int
 main(int argc, char **argv)
 {
-	GREATEST_MAIN_BEGIN();
-	GREATEST_RUN_SUITE(suite_nrand);
-	GREATEST_MAIN_END();
-
-	return 0;
+	return rx_main(0, NULL, argc, (const char **)argv) == RX_SUCCESS ? 0 : 1;
 }