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4a8729bdf1
Differential Revision: https://phabricator.services.mozilla.com/D31580 --HG-- extra : moz-landing-system : lando
98 lines
3.1 KiB
HTML
98 lines
3.1 KiB
HTML
<!DOCTYPE html>
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<meta name="viewport" content="width=device-width,initial-scale=1">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="./resources/intersection-observer-test-utils.js"></script>
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<style>
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pre, #log {
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position: absolute;
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top: 0;
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left: 200px;
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}
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.spacer {
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height: calc(100vh + 100px);
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}
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#target {
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width: 100px;
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height: 100px;
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background-color: green;
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}
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</style>
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<div class="spacer"></div>
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<div id="target"></div>
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<div class="spacer"></div>
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<script>
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var vw = document.documentElement.clientWidth;
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var vh = document.documentElement.clientHeight;
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var entries = [];
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var target;
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runTestCycle(function() {
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target = document.getElementById("target");
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var observer = new IntersectionObserver(function(changes) {
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entries = entries.concat(changes)
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}, { threshold: [0, 0.25, 0.5, 0.75, 1] });
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observer.observe(target);
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entries = entries.concat(observer.takeRecords());
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assert_equals(entries.length, 0, "No initial notifications.");
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runTestCycle(step0, "First rAF.");
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}, "Observer with multiple thresholds.");
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function step0() {
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document.scrollingElement.scrollTop = 120;
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runTestCycle(step1, "document.scrollingElement.scrollTop = 120");
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checkLastEntry(entries, 0, [8, 108, vh + 108, vh + 208, 0, 0, 0, 0, 0, vw, 0, vh, false]);
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}
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function step1() {
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document.scrollingElement.scrollTop = 160;
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runTestCycle(step2, "document.scrollingElement.scrollTop = 160");
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checkLastEntry(entries, 1, [8, 108, vh - 12, vh + 88, 8, 108, vh - 12, vh, 0, vw, 0, vh, true]);
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}
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function step2() {
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document.scrollingElement.scrollTop = 200;
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runTestCycle(step3, "document.scrollingElement.scrollTop = 200");
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checkLastEntry(entries, 2, [8, 108, vh - 52, vh + 48, 8, 108, vh - 52, vh, 0, vw, 0, vh, true]);
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}
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function step3() {
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document.scrollingElement.scrollTop = 240;
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runTestCycle(step4, "document.scrollingElement.scrollTop = 240");
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checkLastEntry(entries, 3, [8, 108, vh - 92, vh + 8, 8, 108, vh - 92, vh, 0, vw, 0, vh, true]);
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}
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function step4() {
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document.scrollingElement.scrollTop = vh + 140;
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runTestCycle(step5, "document.scrollingElement.scrollTop = window.innerHeight + 140");
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checkLastEntry(entries, 4, [8, 108, vh - 132, vh - 32, 8, 108, vh - 132, vh - 32, 0, vw, 0, vh, true]);
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}
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function step5() {
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document.scrollingElement.scrollTop = vh + 160;
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runTestCycle(step6, "document.scrollingElement.scrollTop = window.innerHeight + 160");
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checkLastEntry(entries, 5, [8, 108, -32, 68, 8, 108, 0, 68, 0, vw, 0, vh, true]);
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}
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function step6() {
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document.scrollingElement.scrollTop = vh + 200;
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runTestCycle(step7, "document.scrollingElement.scrollTop = window.innerHeight + 200");
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checkLastEntry(entries, 6, [8, 108, -52, 48, 8, 108, 0, 48, 0, vw, 0, vh, true]);
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}
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function step7() {
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checkLastEntry(entries, 7, [8, 108, -92, 8, 8, 108, 0, 8, 0, vw, 0, vh, true]);
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document.scrollingElement.scrollTop = vh + 220;
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runTestCycle(step8, "document.scrollingElement.scrollTop = window.innerHeight + 220");
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}
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function step8() {
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checkLastEntry(entries, 8, [8, 108, -112, -12, 0, 0, 0, 0, 0, vw, 0, vh, false]);
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document.scrollingElement.scrollTop = 0;
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}
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</script>
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