| <!DOCTYPE html> |
| <script src="../../resources/testharness.js"></script> |
| <script src="../../resources/testharnessreport.js"></script> |
| <style> |
| summary.first { |
| display: list-item; |
| } |
| |
| summary.second { |
| display: some-invalid-value; |
| } |
| |
| summary.third { |
| display: block; |
| } |
| </style> |
| <details><summary>A</summary>B</details> |
| <script> |
| 'use strict'; |
| |
| test(() => { |
| let SummaryElementWithDisplayBlockAuthorRule = 1434; // From UseCounter.h |
| let isCounted = () => internals.isUseCounted(document, SummaryElementWithDisplayBlockAuthorRule); |
| assert_false(isCounted(), |
| 'user agent stylesheet rules should not be counted'); |
| |
| let summary = document.querySelector('summary'); |
| assert_equals( |
| 'block', window.getComputedStyle(summary).display, |
| 'the user agent stylsheet display property should be in effect'); |
| assert_false( |
| isCounted(), |
| 'user agent stylesheet rules should not be counted'); |
| |
| summary.classList.add('first'); |
| assert_equals( |
| 'list-item', window.getComputedStyle(summary).display, |
| 'the author stylsheet display property should be in effect'); |
| assert_false( |
| isCounted(), |
| 'valid values other than block should not be counted'); |
| |
| summary.classList.remove('first'); |
| summary.classList.add('second'); |
| assert_equals( |
| 'block', window.getComputedStyle(summary).display, |
| 'the user agent stylesheet display property should be in effect ' + |
| 'when the author stylesheet value is invalid'); |
| assert_false( |
| isCounted(), |
| 'only values from an author rule should be counted'); |
| |
| summary.classList.remove('second'); |
| summary.classList.add('third'); |
| assert_equals( |
| 'block', window.getComputedStyle(summary).display, |
| 'the author stylesheet display property should be in effect'); |
| assert_true( |
| isCounted(), |
| 'author rules for display: block summary should tickle the counter'); |
| }, 'summary with author display: block is use counted'); |
| </script> |
