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Diffstat (limited to 'testing/web-platform/tests/layout-instability/outline.html')
| -rw-r--r-- | testing/web-platform/tests/layout-instability/outline.html | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/testing/web-platform/tests/layout-instability/outline.html b/testing/web-platform/tests/layout-instability/outline.html new file mode 100644 index 0000000000..2b3704fd87 --- /dev/null +++ b/testing/web-platform/tests/layout-instability/outline.html @@ -0,0 +1,21 @@ +<!DOCTYPE html> +<title>Layout Instability: outline doesn't contribute to layout shift</title> +<link rel="help" href="https://wicg.github.io/layout-instability/" /> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<script src="resources/util.js"></script> +<div id="target" style="width: 300px; height: 300px; background: blue"></div> +<script> +promise_test(async () => { + const watcher = new ScoreWatcher; + + // Wait for the initial render to complete. + await waitForAnimationFrames(2); + + // Add outline for target. This should not generate a shift. + target.style.outline = "10px solid blue"; + + await waitForAnimationFrames(3); + assert_equals(watcher.score, 0); +}, "Outline."); +</script> |