Added tests for event polling

tests/CMakeLists.txt

@@ -5,6 +5,7 @@ SET(CLI_TESTS
 	test_error
 	test_eventdispatching
 	test_eventhandler
+	test_eventpolling
 	test_optional
 	test_pointrect
 	test_pointrect_constexpr

tests/test_eventpolling.cc

@@ -0,0 +1,76 @@
+#include <SDL.h>
+
+#include <SDL2pp/SDL.hh>
+#include <SDL2pp/EventPolling.hh>
+
+#include "testing.h"
+
+using namespace SDL2pp;
+using namespace SDL2pp::Event;
+
+BEGIN_TEST(int, char*[])
+	SDL sdl{SDL_INIT_EVENTS};
+
+	// Empty event poll
+	SDL_Event event;
+	while (SDL_PollEvent(&event));
+
+	// Poll a single event
+	{
+		event.type = SDL_KEYUP;
+		SDL_PushEvent(&event);
+		
+		EXPECT_TRUE(PollEvent());
+		EXPECT_TRUE(!PollEvent()); // Verify no additional events
+	}
+
+	// Poll multiple events single event
+	{
+		event.type = SDL_KEYUP;
+		constexpr auto amountOfEvents = 5;
+		for (auto n = 0; n < amountOfEvents; n++)
+			SDL_PushEvent(&event);
+		
+		EXPECT_EQUAL(PollAllEvents(), amountOfEvents);
+		EXPECT_TRUE(!PollEvent()); // Verify no additional events
+	}
+
+	// Poll with an event handler
+	{
+		struct EventHandler {
+			int eventsHandled = 0;
+			int keyboardEventsHandled = 0;
+			bool quitEventHandled = false;
+			
+			void HandleEvent(SDL_Event) {
+				eventsHandled++;
+			}
+			
+			void HandleEvent(SDL_KeyboardEvent) {
+				keyboardEventsHandled++;
+			}
+			
+			void HandleEvent(SDL_QuitEvent) {
+				quitEventHandled = true;
+			}
+		};
+		
+		event.type = SDL_KEYUP;
+		SDL_PushEvent(&event);
+		
+		event.type = SDL_KEYDOWN;
+		SDL_PushEvent(&event);
+		
+		event.type = SDL_QUIT;
+		SDL_PushEvent(&event);
+		
+		auto eventHandler = EventHandler{};
+		
+		EXPECT_EQUAL(PollAllEvents(eventHandler), 3);
+		EXPECT_TRUE(!PollEvent()); // Verify no additional events
+		
+		EXPECT_EQUAL(eventHandler.eventsHandled, 3);
+		EXPECT_EQUAL(eventHandler.keyboardEventsHandled, 2);
+		EXPECT_EQUAL(eventHandler.quitEventHandled, true);
+	}
+END_TEST()