--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-bot.c	Sat Jan 16 22:48:30 2021 +0100
@@ -0,0 +1,207 @@
+/*
+ * test-bot.c -- test bot.h functions
+ *
+ * Copyright (c) 2013-2021 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.
+ */
+
+#include <string.h>
+
+#define GREATEST_USE_ABBREVS 0
+#include <greatest.h>
+
+#include <irccd/irccd.h>
+#include <irccd/server.h>
+#include <irccd/util.h>
+
+static struct irc_server *
+server_new(const char *name)
+{
+	struct irc_server *s;
+
+	s = irc_util_calloc(1, sizeof (*s));
+	strlcpy(s->name, name, sizeof (s->name));
+
+	return s;
+}
+
+static void
+clean(void *udata)
+{
+	(void)udata;
+
+	irc_bot_clear_servers();
+}
+
+GREATEST_TEST
+servers_add(void)
+{
+	struct irc_server *s1, *s2, *s3;
+
+	s1 = server_new("malikania");
+	s2 = server_new("freenode");
+	s3 = server_new("oftc");
+
+	/* irc.servers -> s1 */
+	irc_bot_add_server(s1);
+	GREATEST_ASSERT_EQ(1, irc.serversz);
+	GREATEST_ASSERT_EQ(1, s1->refc);
+	GREATEST_ASSERT_EQ(s1, irc.servers);
+	GREATEST_ASSERT_EQ(NULL, s1->prev);
+	GREATEST_ASSERT_EQ(NULL, s1->next);
+
+	/* irc.servers -> s2 -> s1 */
+	irc_bot_add_server(s2);
+	GREATEST_ASSERT_EQ(2, irc.serversz);
+	GREATEST_ASSERT_EQ(1, s1->refc);
+	GREATEST_ASSERT_EQ(1, s2->refc);
+	GREATEST_ASSERT_EQ(s2, irc.servers);
+	GREATEST_ASSERT_EQ(s1, s2->next);
+	GREATEST_ASSERT_EQ(NULL, s2->prev);
+	GREATEST_ASSERT_EQ(NULL, s1->next);
+	GREATEST_ASSERT_EQ(s2, s1->prev);
+
+	/* irc.servers -> s3 -> s2 -> s1 */
+	irc_bot_add_server(s3);
+	GREATEST_ASSERT_EQ(3, irc.serversz);
+	GREATEST_ASSERT_EQ(1, s1->refc);
+	GREATEST_ASSERT_EQ(1, s2->refc);
+	GREATEST_ASSERT_EQ(1, s3->refc);
+	GREATEST_ASSERT_EQ(s3, irc.servers);
+	GREATEST_ASSERT_EQ(s2, s3->next);
+	GREATEST_ASSERT_EQ(NULL, s3->prev);
+	GREATEST_ASSERT_EQ(s1, s2->next);
+	GREATEST_ASSERT_EQ(s3, s2->prev);
+	GREATEST_ASSERT_EQ(NULL, s1->next);
+	GREATEST_ASSERT_EQ(s2, s1->prev);
+
+	GREATEST_PASS();
+}
+
+GREATEST_TEST
+servers_remove(void)
+{
+	struct irc_server *s1, *s2, *s3;
+
+	s1 = server_new("1");
+	s2 = server_new("2");
+	s3 = server_new("3");
+
+	/* Protect deletion from irc_bot_remove_server. */
+	irc_server_incref(s1);
+	irc_server_incref(s2);
+	irc_server_incref(s3);
+
+	/* irc.servers -> s3 -> s2 -> s1 */
+	irc_bot_add_server(s1);
+	irc_bot_add_server(s2);
+	irc_bot_add_server(s3);
+
+	/* irc.servers -> s3 -> [s2] -> s1 */
+	/* irc.servers -> s3 -> s1 */
+	irc_bot_remove_server(s2->name);
+	GREATEST_ASSERT_EQ(2, irc.serversz);
+	GREATEST_ASSERT_EQ(2, s1->refc);
+	GREATEST_ASSERT_EQ(1, s2->refc);
+	GREATEST_ASSERT_EQ(2, s3->refc);
+	GREATEST_ASSERT_EQ(NULL, s2->next);
+	GREATEST_ASSERT_EQ(NULL, s2->prev);
+	GREATEST_ASSERT_EQ(s1, s3->next);
+	GREATEST_ASSERT_EQ(NULL, s3->prev);
+	GREATEST_ASSERT_EQ(NULL, s1->next);
+	GREATEST_ASSERT_EQ(s3, s1->prev);
+
+	/* irc.servers -> s3 -> [s1] */
+	/* irc.servers -> s3 */
+	irc_bot_remove_server(s1->name);
+	GREATEST_ASSERT_EQ(1, irc.serversz);
+	GREATEST_ASSERT_EQ(1, s1->refc);
+	GREATEST_ASSERT_EQ(1, s2->refc);
+	GREATEST_ASSERT_EQ(2, s3->refc);
+	GREATEST_ASSERT_EQ(NULL, s1->next);
+	GREATEST_ASSERT_EQ(NULL, s1->prev);
+	GREATEST_ASSERT_EQ(NULL, s3->next);
+	GREATEST_ASSERT_EQ(NULL, s3->prev);
+
+	/* irc.servers -> [s3] */
+	/* irc.servers -> NULL */
+	irc_bot_remove_server(s3->name);
+	GREATEST_ASSERT_EQ(0, irc.serversz);
+	GREATEST_ASSERT_EQ(NULL, irc.servers);
+	GREATEST_ASSERT_EQ(1, s1->refc);
+	GREATEST_ASSERT_EQ(1, s2->refc);
+	GREATEST_ASSERT_EQ(1, s3->refc);
+	GREATEST_ASSERT_EQ(NULL, s3->next);
+	GREATEST_ASSERT_EQ(NULL, s3->prev);
+
+	irc_server_decref(s1);
+	irc_server_decref(s2);
+	irc_server_decref(s3);
+
+	GREATEST_PASS();
+}
+
+GREATEST_TEST
+servers_clear(void)
+{
+	struct irc_server *s1, *s2, *s3;
+
+	s1 = server_new("1");
+	s2 = server_new("2");
+	s3 = server_new("3");
+
+	/* Protect deletion from irc_bot_remove_server. */
+	irc_server_incref(s1);
+	irc_server_incref(s2);
+	irc_server_incref(s3);
+
+	irc_bot_add_server(s1);
+	irc_bot_add_server(s2);
+	irc_bot_add_server(s3);
+	irc_bot_clear_servers();
+
+	GREATEST_ASSERT_EQ(0, irc.serversz);
+	GREATEST_ASSERT_EQ(NULL, irc.servers);
+	GREATEST_ASSERT_EQ(1, s1->refc);
+	GREATEST_ASSERT_EQ(NULL, s1->next);
+	GREATEST_ASSERT_EQ(NULL, s1->prev);
+	GREATEST_ASSERT_EQ(1, s2->refc);
+	GREATEST_ASSERT_EQ(NULL, s2->next);
+	GREATEST_ASSERT_EQ(NULL, s2->prev);
+	GREATEST_ASSERT_EQ(1, s3->refc);
+	GREATEST_ASSERT_EQ(NULL, s3->next);
+	GREATEST_ASSERT_EQ(NULL, s3->prev);
+	GREATEST_PASS();
+}
+
+GREATEST_SUITE(suite_servers)
+{
+	GREATEST_SET_SETUP_CB(clean, NULL);
+	GREATEST_SET_TEARDOWN_CB(clean, NULL);
+	GREATEST_RUN_TEST(servers_add);
+	GREATEST_RUN_TEST(servers_remove);
+	GREATEST_RUN_TEST(servers_clear);
+}
+
+GREATEST_MAIN_DEFS();
+
+int
+main(int argc, char **argv)
+{
+	GREATEST_MAIN_BEGIN();
+	GREATEST_RUN_SUITE(suite_servers);
+	GREATEST_MAIN_END();
+
+	return 0;
+}