| Index: third_party/WebKit/LayoutTests/intersection-observer/multiple-targets.html
|
| diff --git a/third_party/WebKit/LayoutTests/intersection-observer/multiple-targets.html b/third_party/WebKit/LayoutTests/intersection-observer/multiple-targets.html
|
| new file mode 100644
|
| index 0000000000000000000000000000000000000000..91b03e1c6f73a54d27028573c2604695b8f41389
|
| --- /dev/null
|
| +++ b/third_party/WebKit/LayoutTests/intersection-observer/multiple-targets.html
|
| @@ -0,0 +1,65 @@
|
| +<!DOCTYPE html>
|
| +<script src="../resources/js-test.js"></script>
|
| +<script src="../resources/intersection-observer-helper-functions.js"></script>
|
| +<style>
|
| +.target {
|
| + width: 100px;
|
| + height: 100px;
|
| + margin: 10px;
|
| + background-color: green;
|
| +}
|
| +</style>
|
| +<div style="width:100%; height:700px;"></div>
|
| +<div id="target1" class="target"></div>
|
| +<div id="target2" class="target"></div>
|
| +<div id="target3" class="target"></div>
|
| +
|
| +<script>
|
| +description("Verify that notifications for multiple targets are sorted by the order in which observe() was called on each target.");
|
| +var target1 = document.getElementById("target1");
|
| +var target2 = document.getElementById("target2");
|
| +var target3 = document.getElementById("target3");
|
| +var entries = [];
|
| +var observer = new IntersectionObserver(
|
| + changes => { entries.push(...changes); }
|
| +);
|
| +
|
| +onload = function() {
|
| + observer.observe(target1);
|
| + observer.observe(target2);
|
| + observer.observe(target3);
|
| + entries = entries.concat(observer.takeRecords());
|
| + shouldBeEqualToNumber("entries.length", 0);
|
| + document.scrollingElement.scrollTop = 150;
|
| + waitForNotification(step0);
|
| +}
|
| +
|
| +function step0() {
|
| + shouldBeEqualToNumber("entries.length", 1);
|
| + if (entries.length > 0)
|
| + shouldBeEqualToString("entries[0].target.id", "target1");
|
| + document.scrollingElement.scrollTop = 10000;
|
| + waitForNotification(step1);
|
| +}
|
| +
|
| +function step1() {
|
| + shouldBeEqualToNumber("entries.length", 3);
|
| + if (entries.length > 1)
|
| + shouldBeEqualToString("entries[1].target.id", "target2");
|
| + if (entries.length > 2)
|
| + shouldBeEqualToString("entries[2].target.id", "target3");
|
| + document.scrollingElement.scrollTop = 0;
|
| + waitForNotification(step2);
|
| +}
|
| +
|
| +function step2() {
|
| + shouldBeEqualToNumber("entries.length", 6);
|
| + if (entries.length > 3)
|
| + shouldBeEqualToString("entries[3].target.id", "target1");
|
| + if (entries.length > 4)
|
| + shouldBeEqualToString("entries[4].target.id", "target2");
|
| + if (entries.length > 5)
|
| + shouldBeEqualToString("entries[5].target.id", "target3");
|
| + finishJSTest();
|
| +}
|
| +</script>
|
|
|
Chromium Code Reviews
Issue 2028363002:
IntersectionObserver: make order of notifications deterministic. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src@master