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tests/test_game.py

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+import os
+
+# Use the SDL dummy video driver so tests can run headless in CI
+os.environ.setdefault("SDL_VIDEODRIVER", "dummy")
+
+import pygame
+from game.game import Game
+
+
+def test_game_initializes_and_runs_briefly():
+    # Ensure pygame uses the dummy driver
+    assert pygame.get_sdl_version() is not None
+
+    # Instantiate the game and run for a tiny amount of time
+    g = Game(width=320, height=240, fps=60)
+    # Run the loop for 0.1 seconds using run(max_run_seconds=...)
+    g.run(max_run_seconds=0.1)
+
+    # If we reached cleanup without exception, consider test passed
+    assert not pygame.get_init()  # pygame.quit() should have been called