| <!DOCTYPE html> |
| <script src="../../resources/testharness.js"></script> |
| <script src="../../resources/testharnessreport.js"></script> |
| <style id="style"></style> |
| <script> |
| 'use strict'; |
| |
| test(() => { |
| var kHasBeforeOrAfterPseudoElement = 2204; // From UseCounter.h |
| var style = document.getElementById('style'); |
| style.textContent = "div::first-line { color: red; }"; |
| assert_false(internals.isUseCounted(document, kHasBeforeOrAfterPseudoElement)); |
| style.textContent = "div::before { color: red; }"; |
| assert_true(internals.isUseCounted(document, kHasBeforeOrAfterPseudoElement)); |
| }, 'Use of ::before in CSS is use counted.'); |
| </script> |
