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Diffstat (limited to '')
-rw-r--r-- | testing/web-platform/tests/paint-timing/with-first-paint/paint-visited.html | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/testing/web-platform/tests/paint-timing/with-first-paint/paint-visited.html b/testing/web-platform/tests/paint-timing/with-first-paint/paint-visited.html new file mode 100644 index 0000000000..c02ea24052 --- /dev/null +++ b/testing/web-platform/tests/paint-timing/with-first-paint/paint-visited.html @@ -0,0 +1,48 @@ +<!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> |