| <!DOCTYPE html> |
| <script src='../../resources/gesture-util.js'></script> |
| <script src="../../resources/testharness.js"></script> |
| <script src="../../resources/testharnessreport.js"></script> |
| |
| <style> |
| #blue { |
| background-color: rgb(0, 0, 255); |
| position: absolute; |
| left: 75px; |
| top: 75px; |
| height: 100px; |
| width: 100px; |
| } |
| #blue:hover { |
| top: 500px; |
| } |
| </style> |
| <div id="blue"></div> |
| <script> |
| const x = 100; |
| const y = 100; |
| var blue = document.getElementById('blue'); |
| |
| window.onload = async () => { |
| promise_test(async () => { |
| // Move the blue element away when it is hovered, so the blue element will oscillates |
| // between 75px and 500px at each animation frame. |
| await mouseMoveTo(x, y); |
| // When the blue element is hovered, it will moved to 500px from the top. |
| await waitFor( () => { return blue.matches(':hover');}, 'wait for move to the blue element'); |
| assert_equals(blue.offsetTop, 500, "Check that the blue element is moved to 500px from the top"); |
| |
| // When the blue element is not hovered, it will set to its default position. |
| await waitFor( () => { return !blue.matches(':hover');}, 'wait for move to the blue element'); |
| assert_equals(blue.offsetTop, 75, "The blue element is moved back to 75px from the top"); |
| }, 'The hover state is updated at the begin frame after the layout changes which is caused by hover update.'); |
| } |
| </script> |
