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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:22:09 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:22:09 +0000 |
| commit | 43a97878ce14b72f0981164f87f2e35e14151312 (patch) | |
| tree | 620249daf56c0258faa40cbdcf9cfba06de2a846 /testing/web-platform/tests/layout-instability/absolute-child-shift-with-parent-negative-overflow.html | |
| parent | Initial commit. (diff) | |
| download | firefox-upstream.tar.xz firefox-upstream.zip | |
Adding upstream version 110.0.1.upstream/110.0.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'testing/web-platform/tests/layout-instability/absolute-child-shift-with-parent-negative-overflow.html')
| -rw-r--r-- | testing/web-platform/tests/layout-instability/absolute-child-shift-with-parent-negative-overflow.html | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/testing/web-platform/tests/layout-instability/absolute-child-shift-with-parent-negative-overflow.html b/testing/web-platform/tests/layout-instability/absolute-child-shift-with-parent-negative-overflow.html new file mode 100644 index 0000000000..21caa263c9 --- /dev/null +++ b/testing/web-platform/tests/layout-instability/absolute-child-shift-with-parent-negative-overflow.html @@ -0,0 +1,31 @@ +<!DOCTYPE html> +<title>Layout Instability: parent and overflowing absolute child moved together</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="parent" style="position: relative; left: 400px; top: 300px; width: 100px; height: 100px; background: yellow"> + <div id="child" style="position: absolute; top: -300px; left: -400px; width: 100px; height: 100px; background: blue"></div> +</div> +<script> + +promise_test(async () => { + const watcher = new ScoreWatcher; + + // Wait for the initial render to complete. + await waitForAnimationFrames(2); + + // Modify the position of the div. + const parent = document.querySelector("#parent"); + parent.style.top = '400px'; + + // We should track parent and child separately. + const expectedScore = computeExpectedScore(100 * (100 + 100), 100) * 2; + + // Observer fires after the frame is painted. + assert_equals(watcher.score, 0); + await watcher.promise; + assert_equals(watcher.score, expectedScore); +}, 'Parent and overflowing absolute child movement.'); + +</script> |