diff options
| 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/inline-flow-shift.html | |
| parent | Initial commit. (diff) | |
| download | firefox-43a97878ce14b72f0981164f87f2e35e14151312.tar.xz firefox-43a97878ce14b72f0981164f87f2e35e14151312.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/inline-flow-shift.html')
| -rw-r--r-- | testing/web-platform/tests/layout-instability/inline-flow-shift.html | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/testing/web-platform/tests/layout-instability/inline-flow-shift.html b/testing/web-platform/tests/layout-instability/inline-flow-shift.html new file mode 100644 index 0000000000..0385f29c2f --- /dev/null +++ b/testing/web-platform/tests/layout-instability/inline-flow-shift.html @@ -0,0 +1,42 @@ +<!DOCTYPE html> +<title>Layout Instability: inline/text movement is detected</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 style="width: 200px; font-size: 20px; line-height: 25px"> + 1AAAAAAA<br> + 2AAAAAAA<br> + 3AAAAAAA<br> + <div id="inline-block" style="display: inline-block; height: 50px">4AAAAAAA</div><br> + 5AAAAAAA<br> + 6AAAAAAA<br> + 7AAAAAAA<br> +</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 inline_block = document.querySelector("#inline-block"); + inline_block.style.height = '100px'; + + // The lines below the inline-block are shifted down by 50px. + // The implementation may measure the real width of the shifted text + // or use the available width (i.e. width of the containing block). + // Also tolerate extra 10% error. + const text_width = inline_block.offsetWidth; + const expectedScoreMin = computeExpectedScore(text_width * (30 * 3 + 50), 50) * 0.9; + const expectedScoreMax = computeExpectedScore(200 * (30 * 3 + 50), 50) * 1.1; + + // Observer fires after the frame is painted. + assert_equals(watcher.score, 0); + await watcher.promise; + assert_between_exclusive(watcher.score, expectedScoreMin, expectedScoreMax); +}, 'Inline flow movement.'); + +</script> |