| <!DOCTYPE html> |
| <head> |
| <script src="../../resources/testharness.js"></script> |
| <script src="../../resources/testharnessreport.js"></script> |
| <style> |
| .n { offset-position: auto; } |
| </style> |
| </head> |
| |
| <div id="target"></div> |
| <script> |
| var CSSOffsetInEffect = 1617; // From UseCounter.h |
| |
| test(function() { |
| assert_false(internals.isUseCounted(document, CSSOffsetInEffect)); |
| |
| var styleElement = document.createElement('style'); |
| styleElement.textContent = ".p { offset-position: center; }"; |
| document.head.appendChild(styleElement); |
| |
| assert_true(internals.isUseCounted(document, CSSOffsetInEffect)); |
| }); |
| </script> |
