| Testing the Button class. | |
| On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". | |
| PASS button.image.element.style.webkitMaskImage.includes("macOS/Pause.svg") became true | |
| eventSender.mouseMoveTo(0, 0) | |
| eventSender.mouseDown() | |
| Wait 125ms for the transition to shrink the 'picture' element to happen. | |
| eventSender.mouseUp() | |
| Button was pressed. | |
| PASS successfullyParsed is true | |
| TEST COMPLETE | |