                          "innerFrame received lostpointercapture"];
        await new test_driver.Actions()
                             .pointerMove(200, 200)
                             .pointerDown()
                             .pointerMove(150, 150)
                             .pointerMove(50, 50)
                             .pointerUp()
                             .send();
        assert_array_equals(receivedEventList, expectedEventList, "Received events: " + receivedEventList);
        document.