| <!DOCTYPE html> |
| <style> |
| a:visited { |
| color:white; |
| } |
| </style> |
| <body> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <a id="link" href="./">link</a> |
| <script> |
| /* This test ensures that an empty page is painted when there is an invisible visited link (that |
| would be visible if the link was not visited). It's necessary that whether the page is painted or |
| not does not depend on visitedness of the link. Otherwise the paint-timing API could be used to |
| sniff whether a link has been visited or not. */ |
| window.onload = function() { |
| /* Convenience helper to get the link into the browsing history. |
| Using a relative path because some browsers only allow replaceState within the same domain. */ |
| current_url = window.location.href; |
| history.replaceState({}, "", "./"); |
| history.replaceState({}, "", current_url); |
| } |
| setup({"hide_test_state": true}); |
| async_test(function(t) { |
| assert_implements(window.PerformancePaintTiming, "Paint Timing isn't supported."); |
| function testPaintEntries() { |
| const bufferedEntries = performance.getEntriesByType('paint'); |
| if (bufferedEntries.length < 2) { |
| t.step_timeout(function() { |
| testPaintEntries(); |
| }, 20); |
| return; |
| } |
| t.step(function() { |
| assert_equals(bufferedEntries.length, 2, "FP and FCP."); |
| assert_equals(bufferedEntries[0].entryType, "paint"); |
| assert_equals(bufferedEntries[0].name, "first-paint"); |
| assert_equals(bufferedEntries[1].entryType, "paint"); |
| assert_equals(bufferedEntries[1].name, "first-contentful-paint"); |
| t.done(); |
| }); |
| } |
| t.step(function() { |
| testPaintEntries(); |
| }); |
| }, "Visited-attack test to check existence of FP and FCP."); |
| </script> |
| </body> |