summaryrefslogtreecommitdiffstats
path: root/docshell/test/mochitest/test_bug1151421.html
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 17:32:43 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 17:32:43 +0000
commit6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch)
treea68f146d7fa01f0134297619fbe7e33db084e0aa /docshell/test/mochitest/test_bug1151421.html
parentInitial commit. (diff)
downloadthunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.tar.xz
thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.zip
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'docshell/test/mochitest/test_bug1151421.html')
-rw-r--r--docshell/test/mochitest/test_bug1151421.html61
1 files changed, 61 insertions, 0 deletions
diff --git a/docshell/test/mochitest/test_bug1151421.html b/docshell/test/mochitest/test_bug1151421.html
new file mode 100644
index 0000000000..0738ee783e
--- /dev/null
+++ b/docshell/test/mochitest/test_bug1151421.html
@@ -0,0 +1,61 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=1151421
+-->
+<head>
+ <title>Test for Bug 1151421</title>
+ <script src="/tests/SimpleTest/SimpleTest.js"></script>
+ <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1151421">Mozilla Bug 1151421</a>
+
+<script type="application/javascript">
+
+/** Test for Bug 1151421 */
+SimpleTest.waitForExplicitFinish();
+
+function childLoad() {
+ // Spin the event loop so we leave the onload handler.
+ SimpleTest.executeSoon(childLoad2);
+}
+
+function childLoad2() {
+ let iframe = document.getElementById("iframe");
+ let cw = iframe.contentWindow;
+ let content = cw.document.getElementById("content");
+
+ // Create a function to calculate an invariant.
+ let topPlusOffset = function() {
+ return Math.round(content.getBoundingClientRect().top + cw.pageYOffset);
+ };
+
+ let initialTPO = topPlusOffset();
+
+ // Scroll the iframe to various positions, and check the TPO.
+ // Scrolling down to the bottom will adjust the page offset by a fractional amount.
+ let positions = [-100, 0.17, 0, 1.5, 10.41, 1e6, 12.1];
+
+ // Run some tests with scrollTo() and ensure we have the same invariant after scrolling.
+ positions.forEach(function(pos) {
+ cw.scrollTo(0, pos);
+ is(topPlusOffset(), initialTPO, "Top plus offset should remain invariant across scrolling.");
+ });
+
+ positions.reverse().forEach(function(pos) {
+ cw.scrollTo(0, pos);
+ is(topPlusOffset(), initialTPO, "(reverse) Top plus offset should remain invariant across scrolling.");
+ });
+
+ SimpleTest.finish();
+}
+
+</script>
+
+<!-- When the iframe loads, it calls childLoad(). -->
+<br>
+<iframe height='100px' id='iframe' src='file_bug1151421.html'></iframe>
+
+</body>
+</html>