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Diffstat (limited to '')
| -rw-r--r-- | testing/web-platform/tests/layout-instability/sources.html | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/testing/web-platform/tests/layout-instability/sources.html b/testing/web-platform/tests/layout-instability/sources.html new file mode 100644 index 0000000000..5bf3abfcc8 --- /dev/null +++ b/testing/web-platform/tests/layout-instability/sources.html @@ -0,0 +1,38 @@ +<!DOCTYPE html> +<title>Layout Instability: sources attribute</title> +<link rel="help" href="https://wicg.github.io/layout-instability/" /> +<style> + +body { margin: 10px; } +#shifter { position: relative; width: 300px; height: 100px; background: blue; } + +</style> +<div id="shifter"></div> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<script src="resources/util.js"></script> +<script> + +strrect = r => `[${r.x},${r.y},${r.width},${r.height}]`; + +promise_test(async () => { + const watcher = new ScoreWatcher; + const shifter = document.querySelector("#shifter"); + + // Wait for the initial render to complete. + await waitForAnimationFrames(2); + + // Modify the position of the div. + shifter.style = "top: 60px; left: 10px"; + await watcher.promise; + + const sources = watcher.lastEntry.sources; + assert_equals(sources.length, 1); + + const source = sources[0]; + assert_equals(source.node, shifter); + assert_equals(strrect(source.previousRect), "[10,10,300,100]"); + assert_equals(strrect(source.currentRect), "[20,70,300,100]"); +}, "Sources attribute."); + +</script> |