Create desktop app due to mkv issue with chrome

desktop-client/test_app.py

@@ -0,0 +1,60 @@
+import pytest
+from PyQt6.QtCore import Qt
+from main import VlcSyncApp
+
+def test_app_ui_flow(qtbot):
+    # Initialize the main application
+    app = VlcSyncApp()
+    qtbot.addWidget(app)
+    
+    # 1. Test Lobby View
+    assert app.stacked_widget.currentIndex() == 0
+    assert not app.create_room_btn.isEnabled()
+    
+    # Fill out the Lobby Form
+    app.username_input.setText("PyTestUser")
+    
+    # Mocking file selection instead of opening the native dialog
+    app.local_file_path = "test_pytest.mkv"
+    app.local_file_name = "test_pytest.mkv"
+    app.local_file_size = 1048576
+    app.check_inputs()
+    
+    # Button should now be active
+    assert app.create_room_btn.isEnabled()
+    
+    # 2. Test Creating Room matches integration pipeline
+    qtbot.mouseClick(app.create_room_btn, Qt.MouseButton.LeftButton)
+    
+    # Wait for the WebSocket connected signal, the room_created server response, and UI transition
+    def check_room_joined():
+        assert app.stacked_widget.currentIndex() == 1
+        assert len(app.room_code) > 2
+        
+    qtbot.waitUntil(check_room_joined, timeout=5000)
+    
+    # 3. Test Chat flow End-to-End
+    # Type a message
+    qtbot.keyClicks(app.chat_input, "Automated UI Test Message")
+    # Click Send
+    qtbot.mouseClick(app.chat_send_btn, Qt.MouseButton.LeftButton)
+    
+    # Wait until the Bun server grabs the websocket payload, stores it, and broadcasts it back to the UI!
+    def check_chat_received():
+        assert "Automated UI Test Message" in app.chat_messages.text()
+        
+    qtbot.waitUntil(check_chat_received, timeout=3000)
+    
+    # 4. Test Playback Sync (UI updates and internal flags)
+    assert app.play_btn.text() == "▶"
+    
+    # Click Play
+    qtbot.mouseClick(app.play_btn, Qt.MouseButton.LeftButton)
+    
+    def check_playback_started():
+        assert app.play_btn.text() == "⏸"
+        
+    qtbot.waitUntil(check_playback_started, timeout=2000)
+    
+    # Clean up background threads
+    app.leave_room()