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Diffstat (limited to '')
| -rw-r--r-- | testing/web-platform/tests/largest-contentful-paint/iframe-content-not-observed.html | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/testing/web-platform/tests/largest-contentful-paint/iframe-content-not-observed.html b/testing/web-platform/tests/largest-contentful-paint/iframe-content-not-observed.html new file mode 100644 index 0000000000..e605e9f21f --- /dev/null +++ b/testing/web-platform/tests/largest-contentful-paint/iframe-content-not-observed.html @@ -0,0 +1,25 @@ +<!DOCTYPE HTML> +<meta charset=utf-8> +<head> +<title>Largest Contentful Paint: do NOT observe elements from same-origin iframes</title> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +</head> +<body> +<script> + async_test((t) => { + assert_implements(window.LargestContentfulPaint, "LargestContentfulPaint is not implemented"); + const observer = new PerformanceObserver( + t.step_func_done(entryList => { + assert_unreached("Should not have received an entry!"); + }) + ); + observer.observe({type: 'largest-contentful-paint', buffered: true}); + // After a delay, assume that no entry was produced. + t.step_timeout(() => { + t.done(); + }, 200); + }, 'Element in child iframe is not observed, even if same-origin.'); +</script> +<iframe src='resources/iframe-with-content.html'></iframe> +</body> |