Add some unit tests

CMakeLists.txt

@@ -40,3 +40,7 @@ INSTALL(EXPORT EventBusConfig
 		NAMESPACE Dexode::
 		)
 EXPORT(TARGETS EventBus FILE EventBusConfig.cmake)
+
+
+ENABLE_TESTING()
+ADD_SUBDIRECTORY(test/)

test/CMakeLists.txt

@@ -0,0 +1,10 @@
+# http://www.levelofindirection.com/journal/2010/12/28/unit-testing-in-c-and-objective-c-just-got-easier.html
+# Thanks for CATCH!
+
+ADD_EXECUTABLE(EventBusTest
+		eventbus/EventCollectorTest.cpp
+		eventbus/NotifierTest.cpp
+		)
+
+TARGET_INCLUDE_DIRECTORIES(EventBusTest PRIVATE Catch/single_include/)
+TARGET_LINK_LIBRARIES(EventBusTest PUBLIC Dexode::EventBus)

test/eventbus/EventCollectorTest.cpp

@@ -0,0 +1,70 @@
+//
+// Created by Dawid Drozd aka Gelldur on 05.08.17.
+//
+
+#include <catch.hpp>
+
+#include <eventbus/EventCollector.h>
+
+namespace
+{
+
+MAKE_NOTIFICATION(SimpleNotification, int);
+
+MAKE_NOTIFICATION(RefNotification, int &);
+
+}
+
+TEST_CASE("eventbus/EventCollector sample", "Simple test for EventCollector")
+{
+	Dexode::Notifier bus;
+	int callCount = 0;
+	{
+		Dexode::EventCollector listener{bus};
+		listener.listen(getNotificationSimpleNotification(), [&](int value)
+		{
+			REQUIRE(value == 3);
+			++callCount;
+		});
+		bus.notify(getNotificationSimpleNotification(), 3);
+		REQUIRE(callCount == 1);
+	}
+	bus.notify(getNotificationSimpleNotification(), 2);
+	REQUIRE(callCount == 1);
+}
+
+TEST_CASE("eventbus/EventCollector unlistenAll", "EventCollector::unlistenAll")
+{
+	Dexode::Notifier bus;
+	Dexode::EventCollector listener{bus};
+
+	int callCount = 0;
+	listener.listen(getNotificationSimpleNotification(), [&](int value)
+	{
+		REQUIRE(value == 3);
+		++callCount;
+	});
+	bus.notify(getNotificationSimpleNotification(), 3);
+	listener.unlistenAll();
+
+	bus.notify(getNotificationSimpleNotification(), 2);
+	REQUIRE(callCount == 1);
+}
+
+TEST_CASE("eventbus/EventCollector reset", "EventCollector reset when we reasign")
+{
+	Dexode::Notifier bus;
+	int callCount = 0;
+	Dexode::EventCollector listener{bus};
+	listener.listen(getNotificationSimpleNotification(), [&](int value)
+	{
+		REQUIRE(value == 3);
+		++callCount;
+	});
+	bus.notify(getNotificationSimpleNotification(), 3);
+	REQUIRE(callCount == 1);
+	listener = {};
+
+	bus.notify(getNotificationSimpleNotification(), 2);
+	REQUIRE(callCount == 1);
+}

test/eventbus/NotifierTest.cpp

@@ -0,0 +1,56 @@
+//
+// Created by Dawid Drozd aka Gelldur on 05.08.17.
+//
+
+#define CATCH_CONFIG_MAIN
+#include <catch.hpp>
+
+#include <eventbus/Notifier.h>
+
+namespace
+{
+
+MAKE_NOTIFICATION(SimpleNotification, int);
+
+MAKE_NOTIFICATION(RefNotification, int &);
+
+}
+
+TEST_CASE("eventbus/Simple test", "Simple test")
+{
+	Dexode::Notifier bus;
+	const auto token = bus.listen(getNotificationSimpleNotification(), [](int value)
+	{
+		REQUIRE(value == 3);
+	});
+
+	bus.notify(getNotificationSimpleNotification(), 3);
+	bus.unlistenAll(token);
+	bus.notify(getNotificationSimpleNotification(), 2);
+
+	bus.listen(getNotificationSimpleNotification(), [](int value)
+	{
+		REQUIRE(value == 1);
+	});
+	bus.notify(getNotificationSimpleNotification(), 1);
+}
+
+TEST_CASE("eventbus/Multiple listen on same token", "Listening on the same token")
+{
+	Dexode::Notifier bus;
+	const auto token = bus.listen(getNotificationRefNotification(), [](int& value)
+	{
+		REQUIRE(value == 3);
+		--value;
+	});
+	bus.listen(token, getNotificationRefNotification(), [](int& value)
+	{
+		REQUIRE(value == 2);
+	});
+
+	int value = 3;
+	bus.notify(getNotificationRefNotification(), value);
+
+	bus.unlistenAll(token);
+	bus.notify(getNotificationSimpleNotification(), 2);
+}