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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
| commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
| tree | f435a8308119effd964b339f76abb83a57c29483 /testing/web-platform/tests/layout-instability/clip-negative-bottom-margin.html | |
| parent | Initial commit. (diff) | |
| download | firefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz firefox-26a029d407be480d791972afb5975cf62c9360a6.zip | |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'testing/web-platform/tests/layout-instability/clip-negative-bottom-margin.html')
| -rw-r--r-- | testing/web-platform/tests/layout-instability/clip-negative-bottom-margin.html | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/testing/web-platform/tests/layout-instability/clip-negative-bottom-margin.html b/testing/web-platform/tests/layout-instability/clip-negative-bottom-margin.html new file mode 100644 index 0000000000..2c329d9fcd --- /dev/null +++ b/testing/web-platform/tests/layout-instability/clip-negative-bottom-margin.html @@ -0,0 +1,36 @@ +<!DOCTYPE html> +<title>Layout Instability: clip with negative bottom margin</title> +<link rel="help" href="https://wicg.github.io/layout-instability/" /> +<style> + +#scroller { overflow: scroll; width: 200px; height: 500px; } +#space { height: 1000px; margin-bottom: -500px; } +#j { width: 150px; height: 150px; background: yellow; } + +</style> +<div id='scroller'> + <div id='space'></div> + <div id='j'></div> +</div> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<script src="resources/util.js"></script> +<script> + +promise_test(async () => { + const watcher = new ScoreWatcher; + + // Wait for the initial render to complete. + await waitForAnimationFrames(2); + + // Increase j's top margin by 100px. Since j is fully clipped by the scroller, + // this should not generate a shift. + document.querySelector("#j").style.marginTop = "100px"; + + await waitForAnimationFrames(3); + assert_equals(watcher.score, 0); +}, "Clip with negative bottom margin."); + +</script> + + |