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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /testing/web-platform/tests/intersection-observer/target-is-root.html
parentInitial commit. (diff)
downloadfirefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz
firefox-26a029d407be480d791972afb5975cf62c9360a6.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'testing/web-platform/tests/intersection-observer/target-is-root.html')
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diff --git a/testing/web-platform/tests/intersection-observer/target-is-root.html b/testing/web-platform/tests/intersection-observer/target-is-root.html
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+++ b/testing/web-platform/tests/intersection-observer/target-is-root.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<title>IntersectionObserver when root == target doesn't compute an intersection</title>
+<meta name="viewport" content="width=device-width,initial-scale=1">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1682915">
+<link rel="help" href="https://w3c.github.io/IntersectionObserver/#update-intersection-observations-algo">
+<!--
+ Quoting IntersectionObserver section 3.2.8, "Run the Update Intersection Observations Steps", step 2, substep 3:
+
+ If the intersection root is an Element, and target is not a descendant of
+ the intersection root in the containing block chain, skip to step 11.
+
+-->
+<style>
+ #container {
+ overflow: scroll;
+ width: 100px;
+ height: 100px;
+ }
+</style>
+<div id=container>
+ <div></div>
+</div>
+<script>
+async_test(function(t) {
+ let container = document.getElementById("container");
+ let observer = new IntersectionObserver(t.step_func_done(function(entries) {
+ assert_equals(entries.length, 1);
+ assert_equals(entries[0].intersectionRatio, 0);
+ assert_equals(entries[0].isIntersecting, false);
+ }), { root: container });
+ observer.observe(container);
+});
+</script>