summaryrefslogtreecommitdiffstats
path: root/testing/web-platform/tests/css/css-scroll-anchoring/infinite-scroll-event.tentative.html
diff options
context:
space:
mode:
Diffstat (limited to 'testing/web-platform/tests/css/css-scroll-anchoring/infinite-scroll-event.tentative.html')
-rw-r--r--testing/web-platform/tests/css/css-scroll-anchoring/infinite-scroll-event.tentative.html42
1 files changed, 42 insertions, 0 deletions
diff --git a/testing/web-platform/tests/css/css-scroll-anchoring/infinite-scroll-event.tentative.html b/testing/web-platform/tests/css/css-scroll-anchoring/infinite-scroll-event.tentative.html
new file mode 100644
index 0000000000..e2a2998c52
--- /dev/null
+++ b/testing/web-platform/tests/css/css-scroll-anchoring/infinite-scroll-event.tentative.html
@@ -0,0 +1,42 @@
+<!DOCTYPE html>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io">
+<link rel="author" title="Mozilla" href="https://mozilla.org">
+<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1561450">
+<link rel="help" href="https://drafts.csswg.org/css-scroll-anchoring/#suppression-triggers">
+<style>
+ body { margin: 0 }
+ .content {
+ height: 45vh;
+ background: lightblue;
+ }
+</style>
+<div class="content"></div>
+<div id="hidden" style="display: none; height: 200px"></div>
+<div class="content"></div>
+<div class="content"></div>
+<div class="content"></div>
+<script>
+let count = 0;
+const t = async_test("Scroll adjustments don't keep happening with 0-length adjustments triggered by a single scroll operation");
+onscroll = t.step_func(function() {
+ ++count;
+ hidden.style.display = "block";
+ hidden.offsetTop;
+ hidden.style.display = "none";
+ let currentCount = count;
+ requestAnimationFrame(t.step_func(function() {
+ requestAnimationFrame(t.step_func(function() {
+ if (currentCount == count) {
+ t.done();
+ }
+ }));
+ }));
+});
+
+window.onload = t.step_func(function() {
+ window.scrollTo(0, document.documentElement.scrollHeight);
+ window.scrollBy(0, -200);
+});
+</script>