| <!DOCTYPE html> |
| <meta charset="utf-8"> |
| <title>-moz-user-modify should be unsupported in CSS.supports</title> |
| <link rel="help" href="https://developer.mozilla.org/en-US/docs/Web/CSS/user-modify"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <style> |
| @supports (-moz-user-modify: read-only) { |
| #content { |
| width: 10px; |
| height: 10px; |
| background-color: red; |
| } |
| } |
| </style> |
| <div id="content"></div> |
| <script> |
| test(function() { |
| const content = document.getElementById('content'); |
| assert_not_equals(getComputedStyle(content).getPropertyValue('background-color'), 'rgb(255, 0, 0)'); |
| }, '@supports doesn\'t use unsupported -moz-user-modify property'); |
| |
| test(function() { |
| const supportsMozUserModifyProperty = CSS.supports(`(-moz-user-modify: read-only) or |
| (-moz-user-modify: read-write) or |
| (-moz-user-modify: write-only)`); |
| assert_equals(supportsMozUserModifyProperty, false); |
| }, 'CSS.supports doesn\'t use unsupported -moz-user-modify property'); |
| </script> |
