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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 01:47:29 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 01:47:29 +0000 |
| commit | 0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d (patch) | |
| tree | a31f07c9bcca9d56ce61e9a1ffd30ef350d513aa /testing/web-platform/tests/layout-instability/child-shift-with-parent-overflow-hidden.html | |
| parent | Initial commit. (diff) | |
| download | firefox-esr-0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d.tar.xz firefox-esr-0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d.zip | |
Adding upstream version 115.8.0esr.upstream/115.8.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'testing/web-platform/tests/layout-instability/child-shift-with-parent-overflow-hidden.html')
| -rw-r--r-- | testing/web-platform/tests/layout-instability/child-shift-with-parent-overflow-hidden.html | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/testing/web-platform/tests/layout-instability/child-shift-with-parent-overflow-hidden.html b/testing/web-platform/tests/layout-instability/child-shift-with-parent-overflow-hidden.html new file mode 100644 index 0000000000..f7e9e022b9 --- /dev/null +++ b/testing/web-platform/tests/layout-instability/child-shift-with-parent-overflow-hidden.html @@ -0,0 +1,32 @@ +<!DOCTYPE html> +<title>Layout Instability: parent (with overflow:hidden) and 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; width: 200px; height: 200px; + border: 50px solid blue; overflow: hidden"> + <div id="child" style="width: 400px; height: 400px; 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 = '100px'; + + // Only the parent area should be reported. + const expectedScore = computeExpectedScore(300 * (300 + 100), 100); + + // Observer fires after the frame is painted. + assert_equals(watcher.score, 0); + await watcher.promise; + assert_equals(watcher.score, expectedScore); +}, 'Parent (with overflow:hidden) and child moved together.'); + +</script> |