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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 /layout/generic/test/test_scrollframe_abspos_interrupt.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>
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diff --git a/layout/generic/test/test_scrollframe_abspos_interrupt.html b/layout/generic/test/test_scrollframe_abspos_interrupt.html
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+<!doctype html>
+<title>Test for bug 1526609</title>
+<script src="/tests/SimpleTest/SimpleTest.js"></script>
+<script src="/tests/SimpleTest/EventUtils.js"></script>
+<style>
+ body {
+ margin: 0;
+ }
+ .scroller {
+ overflow-y: auto;
+ position: relative;
+ width: 500px;
+ height: 300px;
+ }
+ .kid {
+ position: absolute;
+ width: 100%;
+ background: linear-gradient(to bottom, red, green);
+ line-height: 100px;
+ }
+</style>
+<div class="scroller" id="scroller">
+ <div class="kid"></div>
+</div>
+<script>
+{
+ let text = " foo bar ";
+
+ for (let i = 0; i < 16; ++i)
+ text = text + text;
+ document.querySelector(".kid").innerText = text;
+}
+
+SimpleTest.waitForExplicitFinish();
+
+const scroller = document.querySelector("#scroller");
+
+is(scroller.scrollTop, 0, "Initial scroll position");
+ok(scroller.scrollTopMax > 0, "Should be able to scroll down");
+
+scroller.scrollTop = scroller.scrollTopMax;
+is(scroller.scrollTop, scroller.scrollTopMax, "Should've scrolled");
+
+const origWidth = scroller.offsetWidth;
+const utils = SpecialPowers.DOMWindowUtils;
+
+// Take control of the refresh driver
+utils.advanceTimeAndRefresh(0);
+
+// Force the next reflow to get interrupted
+utils.forceReflowInterrupt();
+scroller.style.width = "300px";
+utils.advanceTimeAndRefresh(0);
+
+isnot(scroller.scrollTop, 0, "Shouldn't have lost scroll position");
+isnot(scroller.offsetWidth, origWidth, "Should've had to reflow");
+
+utils.restoreNormalRefresh();
+SimpleTest.finish();
+</script>