1 files changed, 470 insertions, 0 deletions
diff --git a/src/test/EventTest.cpp b/src/test/EventTest.cpp
new file mode 100644
index 0000000..19f6d2e
--- /dev/null
+++ b/src/test/EventTest.cpp
@@ -0,0 +1,470 @@
+
+#include "api/EventManager.h"
+#include "api/Event.h"
+#include "api/IKeyListener.h"
+#include "api/IMouseListener.h"
+#include <gtest/gtest.h>
+#include <gtest/gtest.h>
+#include <gmock/gmock.h>
+using namespace std;
+using namespace std::chrono_literals;
+using namespace crepe;
+
+
+class EventManagerTest : public ::testing::Test {
+protected:
+    void SetUp() override {
+        // Clear any existing subscriptions or events before each test
+        EventManager::get_instance().clear();
+    }
+
+    void TearDown() override {
+        // Ensure cleanup after each test
+        EventManager::get_instance().clear();
+    }
+};
+class MockKeyListener : public IKeyListener {
+public:
+    MOCK_METHOD(bool, on_key_pressed, (const KeyPressEvent& event), (override));
+    MOCK_METHOD(bool, on_key_released, (const KeyReleaseEvent& event), (override));
+};
+
+class MockMouseListener : public IMouseListener {
+public:
+    MOCK_METHOD(bool, on_mouse_clicked, (const MouseClickEvent& event), (override));
+    MOCK_METHOD(bool, on_mouse_pressed, (const MousePressEvent& event), (override));
+    MOCK_METHOD(bool, on_mouse_released, (const MouseReleaseEvent& event), (override));
+    MOCK_METHOD(bool, on_mouse_moved, (const MouseMoveEvent& event), (override));
+};
+TEST_F(EventManagerTest, EventSubscription) {
+    EventHandler<KeyPressEvent> key_handler = [](const KeyPressEvent& e) {
+        std::cout << "Key Event Triggered" << std::endl;
+        return true;
+    };
+
+    // Subscribe to KeyPressEvent
+    EventManager::get_instance().subscribe<KeyPressEvent>(key_handler, 1);
+
+    // Verify subscription (not directly verifiable; test by triggering event)
+    
+    EventManager::get_instance().trigger_event<KeyPressEvent>(KeyPressEvent{
+		.repeat = true,
+		.key = Keycode::A,
+	}, 1);
+	EventManager::get_instance().trigger_event<KeyPressEvent>(KeyPressEvent{
+		.repeat = true,
+		.key = Keycode::A,
+		
+	}, CHANNEL_ALL);
+	
+}
+TEST_F(EventManagerTest, EventManagerTest_trigger_all_channels) {
+    bool triggered = false;
+
+	EventHandler<MouseClickEvent> mouse_handler = [&](const MouseClickEvent& e) {
+        triggered = true;
+		std::cout << "mouse handled" <<std::endl;
+        EXPECT_EQ(e.mouse_x, 100);
+        EXPECT_EQ(e.mouse_y, 200);
+        EXPECT_EQ(e.button, MouseButton::LEFT_MOUSE);
+        return false;
+    };
+    EventManager::get_instance().subscribe<MouseClickEvent>(mouse_handler, CHANNEL_ALL);
+
+    MouseClickEvent click_event{
+		.mouse_x = 100,
+		.mouse_y = 200,
+		.button = MouseButton::LEFT_MOUSE
+	};
+	EventManager::get_instance().trigger_event<MouseClickEvent>(click_event, CHANNEL_ALL);
+
+    EXPECT_TRUE(triggered);
+}
+
+TEST_F(EventManagerTest, EventManagerTest_priority_order) {
+    EventManager& event_manager = EventManager::get_instance();
+
+    // Vector to track call order
+    std::vector<int> call_order;
+
+    // Handlers with different priorities
+    EventHandler<MouseClickEvent> handler_priority_3 = [&](const MouseClickEvent& e) {
+        call_order.push_back(3);
+        return false;  // Allow propagation
+    };
+
+    EventHandler<MouseClickEvent> handler_priority_1 = [&](const MouseClickEvent& e) {
+        call_order.push_back(1);
+        return false;  // Allow propagation
+    };
+
+    EventHandler<MouseClickEvent> handler_priority_2 = [&](const MouseClickEvent& e) {
+        call_order.push_back(2);
+        return false;  // Allow propagation
+    };
+
+    // Subscribe handlers with different priorities
+    event_manager.subscribe<MouseClickEvent>(handler_priority_1, CHANNEL_ALL, 1);
+    event_manager.subscribe<MouseClickEvent>(handler_priority_2, CHANNEL_ALL, 2);
+    event_manager.subscribe<MouseClickEvent>(handler_priority_3, CHANNEL_ALL, 3);
+
+    // Trigger the event
+    event_manager.trigger_event<MouseClickEvent>(MouseClickEvent{
+        .mouse_x = 100,
+        .mouse_y = 200,
+        .button = MouseButton::LEFT_MOUSE
+    }, CHANNEL_ALL);
+
+    // Check the call order matches the expected priority order
+    std::vector<int> expected_order = {3, 2, 1};
+    EXPECT_EQ(call_order, expected_order);
+
+}
+
+TEST_F(EventManagerTest, EventManagerTest_callback_propagation) {
+    EventManager& event_manager = EventManager::get_instance();
+
+    // Flags to track handler calls
+    bool triggered_true = false;
+    bool triggered_false = false;
+
+    // Handlers
+    EventHandler<MouseClickEvent> mouse_handler_true = [&](const MouseClickEvent& e) {
+        triggered_true = true;
+        EXPECT_EQ(e.mouse_x, 100);
+        EXPECT_EQ(e.mouse_y, 200);
+        EXPECT_EQ(e.button, MouseButton::LEFT_MOUSE);
+        return true;  // Stops propagation
+    };
+
+    EventHandler<MouseClickEvent> mouse_handler_false = [&](const MouseClickEvent& e) {
+        triggered_false = true;
+        EXPECT_EQ(e.mouse_x, 100);
+        EXPECT_EQ(e.mouse_y, 200);
+        EXPECT_EQ(e.button, MouseButton::LEFT_MOUSE);
+        return false;  // Allows propagation
+    };
+
+    // Test event
+    MouseClickEvent click_event{
+        .mouse_x = 100,
+        .mouse_y = 200,
+        .button = MouseButton::LEFT_MOUSE
+    };
+
+    // First Scenario: True handler has higher priority
+    event_manager.subscribe<MouseClickEvent>(mouse_handler_true, CHANNEL_ALL, 1);
+    event_manager.subscribe<MouseClickEvent>(mouse_handler_false, CHANNEL_ALL, 0);
+
+    // Trigger event
+    event_manager.trigger_event<MouseClickEvent>(click_event, CHANNEL_ALL);
+
+    // Check that only the true handler was triggered
+    EXPECT_TRUE(triggered_true);
+    EXPECT_FALSE(triggered_false);
+
+    // Reset and clear
+    triggered_true = false;
+    triggered_false = false;
+    event_manager.clear();
+
+    // Second Scenario: False handler has higher priority
+    event_manager.subscribe<MouseClickEvent>(mouse_handler_true, CHANNEL_ALL, 0);
+    event_manager.subscribe<MouseClickEvent>(mouse_handler_false, CHANNEL_ALL, 1);
+
+    // Trigger event again
+    event_manager.trigger_event<MouseClickEvent>(click_event, CHANNEL_ALL);
+
+    // Check that both handlers were triggered
+    EXPECT_TRUE(triggered_true);
+    EXPECT_TRUE(triggered_false);
+}
+
+TEST_F(EventManagerTest, EventManagerTest_queue_dispatch) {
+	EventManager& event_manager = EventManager::get_instance();
+	bool triggered1 = false;
+	bool triggered2 = false;
+	int test_channel = 1;
+	EventHandler<MouseClickEvent> mouse_handler1 = [&](const MouseClickEvent& e) {
+        triggered1 = true;
+        EXPECT_EQ(e.mouse_x, 100);
+        EXPECT_EQ(e.mouse_y, 200);
+        EXPECT_EQ(e.button, MouseButton::LEFT_MOUSE);
+        return false;  // Allows propagation
+    };
+	EventHandler<MouseClickEvent> mouse_handler2 = [&](const MouseClickEvent& e) {
+        triggered2 = true;
+        EXPECT_EQ(e.mouse_x, 100);
+        EXPECT_EQ(e.mouse_y, 200);
+        EXPECT_EQ(e.button, MouseButton::LEFT_MOUSE);
+        return false;  // Allows propagation
+    };
+	event_manager.subscribe<MouseClickEvent>(mouse_handler1);
+	event_manager.subscribe<MouseClickEvent>(mouse_handler2,test_channel);
+	
+	event_manager.queue_event<MouseClickEvent>(MouseClickEvent{
+		.mouse_x = 100,
+		.mouse_y = 200,
+		.button = MouseButton::LEFT_MOUSE
+	});
+	event_manager.queue_event<MouseClickEvent>(MouseClickEvent{
+		.mouse_x = 100,
+		.mouse_y = 200,
+		.button = MouseButton::LEFT_MOUSE
+	},test_channel);
+	event_manager.dispatch_events();
+	EXPECT_TRUE(triggered1);
+	EXPECT_TRUE(triggered2);
+}
+
+TEST_F(EventManagerTest, EventManagerTest_dispatch_priority) {
+	EventManager& event_manager = EventManager::get_instance();
+	std::vector<int> call_order;
+	int test_channel = 1;
+	EventHandler<MouseClickEvent> mouse_handler1 = [&](const MouseClickEvent& e) {
+		call_order.push_back(1);
+        EXPECT_EQ(e.mouse_x, 100);
+        EXPECT_EQ(e.mouse_y, 200);
+        EXPECT_EQ(e.button, MouseButton::LEFT_MOUSE);
+        return false;  // Allows propagation
+    };
+	EventHandler<MouseClickEvent> mouse_handler2 = [&](const MouseClickEvent& e) {
+        call_order.push_back(2);
+        EXPECT_EQ(e.mouse_x, 100);
+        EXPECT_EQ(e.mouse_y, 200);
+        EXPECT_EQ(e.button, MouseButton::LEFT_MOUSE);
+        return false;  // Allows propagation
+    };
+	EventHandler<MouseClickEvent> mouse_handler3 = [&](const MouseClickEvent& e) {
+        call_order.push_back(3);
+        EXPECT_EQ(e.mouse_x, 100);
+        EXPECT_EQ(e.mouse_y, 200);
+        EXPECT_EQ(e.button, MouseButton::LEFT_MOUSE);
+        return false;  // Allows propagation
+    };
+	event_manager.subscribe<MouseClickEvent>(mouse_handler1,CHANNEL_ALL,1);
+	event_manager.subscribe<MouseClickEvent>(mouse_handler2,CHANNEL_ALL,2);
+	event_manager.subscribe<MouseClickEvent>(mouse_handler2,CHANNEL_ALL,3);
+	event_manager.queue_event<MouseClickEvent>(MouseClickEvent{
+		.mouse_x = 100,
+		.mouse_y = 200,
+		.button = MouseButton::LEFT_MOUSE
+	});
+	event_manager.dispatch_events();
+	std::vector<int> expected_order = {3, 2, 1};
+    EXPECT_EQ(call_order, expected_order);
+}
+
+TEST_F(EventManagerTest, EventManagerTest_unsubscribe) {
+    EventManager& event_manager = EventManager::get_instance();
+    
+    // Flags to track if handlers are triggered
+    bool triggered1 = false;
+    bool triggered2 = false;
+    
+    // Define EventHandlers
+    EventHandler<MouseClickEvent> mouse_handler1 = [&](const MouseClickEvent& e) {
+        triggered1 = true;
+        EXPECT_EQ(e.mouse_x, 100);
+        EXPECT_EQ(e.mouse_y, 200);
+        EXPECT_EQ(e.button, MouseButton::LEFT_MOUSE);
+        return false;  // Allows propagation
+    };
+
+    EventHandler<MouseClickEvent> mouse_handler2 = [&](const MouseClickEvent& e) {
+        triggered2 = true;
+        EXPECT_EQ(e.mouse_x, 100);
+        EXPECT_EQ(e.mouse_y, 200);
+        EXPECT_EQ(e.button, MouseButton::LEFT_MOUSE);
+        return false;  // Allows propagation
+    };
+    
+    // Subscribe handlers
+    event_manager.subscribe<MouseClickEvent>(mouse_handler1);
+    event_manager.subscribe<MouseClickEvent>(mouse_handler2);
+    
+    // Queue events
+    event_manager.queue_event<MouseClickEvent>(MouseClickEvent{
+        .mouse_x = 100,
+        .mouse_y = 200,
+        .button = MouseButton::LEFT_MOUSE
+    });
+    
+    // Dispatch events - both handlers should be triggered
+    event_manager.dispatch_events();
+    EXPECT_TRUE(triggered1);  // Handler 1 should be triggered
+    EXPECT_TRUE(triggered2);  // Handler 2 should be triggered
+    
+    // Reset flags
+    triggered1 = false;
+    triggered2 = false;
+    
+    // Unsubscribe handler1
+    event_manager.unsubscribe<MouseClickEvent>(mouse_handler1);
+    
+    // Queue the same event again
+    event_manager.queue_event<MouseClickEvent>(MouseClickEvent{
+        .mouse_x = 100,
+        .mouse_y = 200,
+        .button = MouseButton::LEFT_MOUSE
+    });
+    
+    // Dispatch events - only handler 2 should be triggered, handler 1 should NOT
+    event_manager.dispatch_events();
+    EXPECT_FALSE(triggered1);  // Handler 1 should NOT be triggered
+    EXPECT_TRUE(triggered2);   // Handler 2 should be triggered
+    
+    // Reset flags
+    triggered2 = false;
+    
+    // Unsubscribe handler2
+    event_manager.unsubscribe<MouseClickEvent>(mouse_handler2);
+    
+    // Queue the event again
+    event_manager.queue_event<MouseClickEvent>(MouseClickEvent{
+        .mouse_x = 100,
+        .mouse_y = 200,
+        .button = MouseButton::LEFT_MOUSE
+    });
+    
+    // Dispatch events - no handler should be triggered
+    event_manager.dispatch_events();
+    EXPECT_FALSE(triggered1);  // Handler 1 should NOT be triggered
+    EXPECT_FALSE(triggered2);  // Handler 2 should NOT be triggered
+}
+
+// TEST_F(EventManagerTest, OnKeyPressedTest) {
+//     MockKeyListener mock_key_listener;
+//     EventManager& event_manager = EventManager::get_instance();
+
+//     // Create the KeyPressEvent object
+//     KeyPressEvent key_event = KeyPressEvent{
+//         .key = Keycode::A,
+//         .repeat = false
+//     };
+
+//     // Set up the mock expectation with direct object passing
+//     EXPECT_CALL(mock_key_listener, on_key_pressed(key_event))
+//         .Times(1)  // Expect it to be called exactly once
+//         .WillOnce(::testing::Return(true));  // Return value (can be true/false)
+
+
+//     // Queue the event
+//     event_manager.queue_event<KeyPressEvent>(key_event);
+
+//     // Dispatch the event to trigger the mock
+//     event_manager.dispatch_events();  // Trigger event dispatch
+
+//     // The mock will ensure the on_key_pressed method is called
+// }
+
+
+
+// TEST_F(EventManagerTest, OnKeyReleaseTest) {
+//     MockKeyListener mock_key_listener;
+//     EventManager& event_manager = EventManager::get_instance();
+
+//     // Create the KeyPressEvent object
+//     KeyReleaseEvent key_event = KeyReleaseEvent{
+//         .key = Keycode::A,
+//     };
+
+//     // Set up the mock expectation with direct object passing
+//     EXPECT_CALL(mock_key_listener, on_key_released(key_event))
+//         .Times(1)  // Expect it to be called exactly once
+//         .WillOnce(::testing::Return(true));  // Return value (can be true/false)
+
+
+//     // Queue the event
+//     event_manager.queue_event<KeyReleaseEvent>(key_event);
+
+//     // Dispatch the event to trigger the mock
+//     event_manager.dispatch_events();  // Trigger event dispatch
+
+//     // The mock will ensure the on_key_pressed method is called
+// }
+
+// TEST_F(EventManagerTest, UnsubscribeEventsTest) {
+//     EventManager& event_manager = EventManager::get_instance();
+//     KeyPressEvent key_event{
+//         .key = Keycode::A,
+//         .repeat = false
+//     };
+
+//     // Create the mock listener
+//     MockKeyListener mock_key_listener;
+
+//     // Set up the mock expectation that on_key_pressed will be called once initially
+//     EXPECT_CALL(mock_key_listener, on_key_pressed(key_event))
+//         .Times(1)  // Expect it to be called exactly once
+//         .WillOnce(::testing::Return(true));  // Return value (can be true/false)
+
+//     event_manager.queue_event<KeyPressEvent>(key_event);
+//     event_manager.dispatch_events();  // Should trigger on_key_pressed once
+
+//     // Now unsubscribe the listener
+//     event_manager.unsubscribe<KeyPressEvent>(std::bind(&MockKeyListener::on_key_pressed, &mock_key_listener, std::placeholders::_1));
+
+//     // Set up the expectation that on_key_pressed will NOT be called after unsubscribing
+//     EXPECT_CALL(mock_key_listener, on_key_pressed(key_event))
+//         .Times(0);  // Should not be called after unsubscribe
+
+//     // Queue and dispatch the event again (after unsubscribe)
+//     event_manager.queue_event<KeyPressEvent>(key_event);
+//     event_manager.dispatch_events();  // Should NOT trigger on_key_pressed after unsubscribe
+// }
+
+// TEST_F(EventManagerTest, OnMouseButtonPressedTest) {
+//     MockMouseListener mock_mouse_listener;
+//     EventManager& event_manager = EventManager::get_instance();
+
+//     // Create the MouseButtonPressEvent object
+//     MousePressEvent mouse_event{
+//         .mouse_x = 100,
+//         .mouse_y = 150,
+//         .button = MouseButton::LEFT_MOUSE
+//     };
+
+//     // Set up the mock expectation with direct object passing
+//     EXPECT_CALL(mock_mouse_listener, on_mouse_pressed(mouse_event))
+//         .Times(1)  // Expect it to be called exactly once
+//         .WillOnce(::testing::Return(true));  // Return value (can be true/false)
+
+//     // Queue the event
+//     event_manager.queue_event<MousePressEvent>(mouse_event);
+
+//     // Dispatch the event to trigger the mock
+//     event_manager.dispatch_events();  // Should trigger on_mouse_button_pressed once
+// }
+
+// TEST_F(EventManagerTest, UnsubscribeMouseEventsTest) {
+//     EventManager& event_manager = EventManager::get_instance();
+//     MousePressEvent mouse_event{
+//         .mouse_x = 100,
+//         .mouse_y = 150,
+//         .button = MouseButton::LEFT_MOUSE
+//     };
+
+//     // Create the mock listener
+//     MockMouseListener mock_mouse_listener;
+
+//     // Set up the mock expectation that on_mouse_button_pressed will be called once initially
+//     EXPECT_CALL(mock_mouse_listener, on_mouse_pressed(mouse_event))
+//         .Times(1)  // Expect it to be called exactly once
+//         .WillOnce(::testing::Return(true));  // Return value (can be true/false)
+
+//     // Queue and dispatch the event (should trigger on_mouse_button_pressed)
+//     event_manager.queue_event<MousePressEvent>(mouse_event);
+//     event_manager.dispatch_events();  // Should trigger on_mouse_button_pressed once
+
+//     // Now unsubscribe the listener
+//     event_manager.unsubscribe<MousePressEvent>(std::bind(&MockMouseListener::on_mouse_pressed, &mock_mouse_listener, std::placeholders::_1));
+
+//     // Set up the expectation that on_mouse_button_pressed will NOT be called after unsubscribing
+//     EXPECT_CALL(mock_mouse_listener, on_mouse_pressed(mouse_event))
+//         .Times(0);  // Should not be called after unsubscribe
+
+//     // Queue and dispatch the event again (after unsubscribe)
+//     event_manager.queue_event<MousePressEvent>(mouse_event);
+//     event_manager.dispatch_events();  // Should NOT trigger on_mouse_button_pressed after unsubscribe
+// }