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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:22:09 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:22:09 +0000
commit43a97878ce14b72f0981164f87f2e35e14151312 (patch)
tree620249daf56c0258faa40cbdcf9cfba06de2a846 /testing/web-platform/tests/layout-instability/pointerdown-becomes-tap.html
parentInitial commit. (diff)
downloadfirefox-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>
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+<!DOCTYPE html>
+<title>Layout Instability: shift in pointerdown becoming tap</title>
+<link rel="help" href="https://wicg.github.io/layout-instability/" />
+<style>
+
+body { margin: 0; height: 2000px; }
+#box {
+ left: 0px;
+ top: 0px;
+ width: 400px;
+ height: 500px;
+ background: yellow;
+ position: relative;
+}
+
+</style>
+<div id="box"></div>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/testdriver.js"></script>
+<script src="/resources/testdriver-actions.js"></script>
+<script src="/resources/testdriver-vendor.js"></script>
+<script src="resources/util.js"></script>
+<script>
+
+const box = document.querySelector("#box");
+box.addEventListener("pointerdown", (e) => {
+ // Generate a layout shift before we know what type of input this pointer
+ // event sequence will become.
+ box.style.top = "100px";
+ e.preventDefault();
+});
+
+generateTapSequence = () => new test_driver.Actions()
+ .addPointer("tp1", "touch")
+ .pointerMove(0, 0, {sourceName: "tp1"})
+ .pointerDown({sourceName: "tp1"})
+ .pause(100)
+ .pointerUp({sourceName: "tp1"})
+ .pause(100);
+
+promise_test(async () => {
+ const watcher = new ScoreWatcher;
+
+ // Wait for the initial render to complete.
+ await waitForAnimationFrames(2);
+
+ // Send pointer events for a tap.
+ await generateTapSequence().send();
+
+ // The box is 400 x 500 and moves by 100px.
+ const expectedExcludedScore = computeExpectedScore(400 * (500 + 100), 100);
+
+ // Only the score that ignores hadRecentInput should increase.
+ assert_equals(watcher.score, expectedExcludedScore);
+ assert_equals(watcher.scoreWithInputExclusion, 0);
+
+}, "Shift in pointerdown excluded when it becomes a tap.");
+
+</script>