--- a/plugins/plugin/plugin.js	Wed May 25 21:34:26 2016 +0200
+++ b/plugins/plugin/plugin.js	Wed May 25 22:05:00 2016 +0200
@@ -16,10 +16,6 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-// Modules.
-var Util = Irccd.Util;
-var Plugin = Irccd.Plugin;
-
 // Plugin information.
 info = {
 	author: "David Demelier <markand@malikania.fr>",
@@ -28,6 +24,10 @@
 	version: "@IRCCD_VERSION@"
 };
 
+// Modules.
+var Util = Irccd.Util;
+var Plugin = Irccd.Plugin;
+
 Plugin.format = {
 	"usage":	"#{nickname}, usage: #{command} list | info plugin",
 	"info":		"#{nickname}, #{name}: #{summary}, version #{version} by #{author} (#{license} license).",

--- a/tests/CMakeLists.txt	Wed May 25 21:34:26 2016 +0200
+++ b/tests/CMakeLists.txt	Wed May 25 22:05:00 2016 +0200
@@ -43,5 +43,6 @@
 		add_subdirectory(plugin-hangman)
 		add_subdirectory(plugin-history)
 		add_subdirectory(plugin-logger)
+		add_subdirectory(plugin-plugin)
 	endif ()
 endif ()

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/plugin-plugin/CMakeLists.txt	Wed May 25 22:05:00 2016 +0200
@@ -0,0 +1,24 @@
+#
+# CMakeLists.txt -- CMake build system for irccd
+#
+# Copyright (c) 2013-2016 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.
+#
+
+irccd_define_test(
+	NAME plugin-plugin
+	SOURCES main.cpp
+	LIBRARIES libirccd
+	FLAGS PLUGINDIR=\"${IRCCD_FAKEROOTDIR}/${WITH_PLUGINDIR}\"
+)

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/plugin-plugin/main.cpp	Wed May 25 22:05:00 2016 +0200
@@ -0,0 +1,133 @@
+/*
+ * main.cpp -- test plugin plugin
+ *
+ * Copyright (c) 2013-2016 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 <gtest/gtest.h>
+
+#include <format.h>
+
+#include <irccd/irccd.hpp>
+#include <irccd/logger.hpp>
+#include <irccd/server.hpp>
+#include <irccd/service-plugin.hpp>
+
+using namespace fmt::literals;
+
+using namespace irccd;
+
+class ServerTest : public Server {
+private:
+	std::string m_last;
+
+public:
+	inline ServerTest()
+		: Server("test", ServerInfo())
+	{
+	}
+
+	inline const std::string &last() const noexcept
+	{
+		return m_last;
+	}
+
+	void message(std::string target, std::string message) override
+	{
+		m_last = util::join({target, message});
+	}
+};
+
+class FakePlugin : public Plugin {
+public:
+	FakePlugin()
+		: Plugin("fake", "")
+	{
+		setAuthor("jean");
+		setVersion("0.0.0.0.0.1");
+		setLicense("BEER");
+		setSummary("Fake White Beer 2000");
+	}
+};
+
+class PluginTest : public testing::Test {
+protected:
+	Irccd m_irccd;
+	PluginService &m_ps;
+
+	std::shared_ptr<ServerTest> m_server;
+	std::shared_ptr<Plugin> m_plugin;
+
+public:
+	PluginTest()
+		: m_ps(m_irccd.pluginService())
+		, m_server(std::make_shared<ServerTest>())
+	{
+		m_ps.add(std::make_shared<FakePlugin>());
+		m_ps.setFormats("plugin", {
+			{ "usage", "usage=#{plugin}:#{command}:#{server}:#{channel}:#{origin}:#{nickname}" },
+			{ "info", "info=#{plugin}:#{command}:#{server}:#{channel}:#{origin}:#{nickname}:#{author}:#{license}:#{name}:#{summary}:#{version}" },
+			{ "not-found", "not-found=#{plugin}:#{command}:#{server}:#{channel}:#{origin}:#{nickname}:#{name}" },
+			{ "too-long", "too-long=#{plugin}:#{command}:#{server}:#{channel}:#{origin}:#{nickname}" }
+		});
+		m_ps.load("plugin", PLUGINDIR "/plugin.js");
+		m_plugin = m_ps.require("plugin");
+	}
+};
+
+TEST_F(PluginTest, formatUsage)
+{
+	m_plugin->onCommand(m_irccd, m_server, "jean!jean@localhost", "#staff", "");
+	ASSERT_EQ("#staff:usage=plugin:!plugin:test:#staff:jean!jean@localhost:jean", m_server->last());
+
+	m_plugin->onCommand(m_irccd, m_server, "jean!jean@localhost", "#staff", "fail");
+	ASSERT_EQ("#staff:usage=plugin:!plugin:test:#staff:jean!jean@localhost:jean", m_server->last());
+
+	m_plugin->onCommand(m_irccd, m_server, "jean!jean@localhost", "#staff", "info");
+	ASSERT_EQ("#staff:usage=plugin:!plugin:test:#staff:jean!jean@localhost:jean", m_server->last());
+}
+
+TEST_F(PluginTest, formatInfo)
+{
+	m_plugin->onCommand(m_irccd, m_server, "jean!jean@localhost", "#staff", "info fake");
+
+	ASSERT_EQ("#staff:info=plugin:!plugin:test:#staff:jean!jean@localhost:jean:jean:BEER:fake:Fake White Beer 2000:0.0.0.0.0.1", m_server->last());
+}
+
+TEST_F(PluginTest, formatNotFound)
+{
+	m_plugin->onCommand(m_irccd, m_server, "jean!jean@localhost", "#staff", "info doesnotexistsihope");
+
+	ASSERT_EQ("#staff:not-found=plugin:!plugin:test:#staff:jean!jean@localhost:jean:doesnotexistsihope", m_server->last());
+}
+
+TEST_F(PluginTest, formatTooLong)
+{
+	for (int i = 0; i < 100; ++i)
+		m_ps.add(std::make_shared<Plugin>("plugin-n-{}"_format(i), ""));
+
+	m_plugin->onCommand(m_irccd, m_server, "jean!jean@localhost", "#staff", "list");
+
+	ASSERT_EQ("#staff:too-long=plugin:!plugin:test:#staff:jean!jean@localhost:jean", m_server->last());
+}
+
+int main(int argc, char **argv)
+{
+	path::setApplicationPath(argv[0]);
+	testing::InitGoogleTest(&argc, argv);
+	log::setInterface(std::make_unique<log::Silent>());
+
+	return RUN_ALL_TESTS();
+}