def test_stop_cleans_up_properly(self): port = TestWebKitPort() port._server_process_constructor = MockServerProcess driver = Driver(port, 0, pixel_tests=True) driver.start(True, []) last_tmpdir = port._filesystem.last_tmpdir self.assertNotEquals(last_tmpdir, None) driver.stop() self.assertFalse(port._filesystem.isdir(last_tmpdir))