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<link rel="help" href="https://drafts.csswg.org/css-scroll-anchoring/">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
var win;
var messageCount = 0;
// Navigation steps:
// 1- page gets loaded and anchor element gets scrolled into view.
// 2- loaded page refreshed.
async_test(function(t) {
window.onmessage = function() {
if (++messageCount == 1) {
t.step(() => {
var anchor = win.document.getElementById('anchor');
anchor.scrollIntoView();
assert_equals(win.scrollY, 1000);
win.location.reload();
});
} else {
t.step(() => {
assert_equals(win.scrollY, 1000);
// Change height of content above anchor.
var ch = win.document.getElementById('changer');
ch.style.height = 100;
// Height of first + height changer.
assert_equals(win.scrollY, 1100)
t.done();
});
win.close();
}
};
win = window.open('support/history-restore-anchors-new-window.html');
}, 'Verify scroll anchoring interaction with history restoration');
</script>
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