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<!DOCTYPE html>
<title>Invalidation of viewport units</title>
<link rel="help" href="https://drafts.csswg.org/css-values-4/#viewport-relative-lengths">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
iframe {
width: 200px;
height: 100px;
}
iframe.resize {
width: 400px;
height: 300px;
}
</style>
<main id=main></main>
<script>
function test_invalidation_value(value, expected_pre, expected_post) {
test((t) => {
let iframe = document.createElement('iframe');
main.append(iframe);
const doc = iframe.contentDocument;
const win = iframe.contentWindow;
t.add_cleanup(() => {
doc.body.innerHTML = '';
iframe.remove();
});
doc.body.innerHTML = `<div style="height: ${value};"></div>`;
let div = doc.querySelector('div');
assert_equals(win.getComputedStyle(div).height, expected_pre);
t.add_cleanup(() => { iframe.classList.remove('resize'); })
iframe.classList.add('resize');
assert_equals(win.getComputedStyle(div).height, expected_post);
}, `${value} computes to ${expected_post} after frame resize`);
}
test_invalidation_value('100vw', '200px', '400px');
test_invalidation_value('100vi', '200px', '400px');
test_invalidation_value('100vmax', '200px', '400px');
test_invalidation_value('100svw', '200px', '400px');
test_invalidation_value('100svi', '200px', '400px');
test_invalidation_value('100svmax', '200px', '400px');
test_invalidation_value('100lvw', '200px', '400px');
test_invalidation_value('100lvi', '200px', '400px');
test_invalidation_value('100lvmax', '200px', '400px');
test_invalidation_value('100dvw', '200px', '400px');
test_invalidation_value('100dvi', '200px', '400px');
test_invalidation_value('100dvmax', '200px', '400px');
test_invalidation_value('100vh', '100px', '300px');
test_invalidation_value('100vb', '100px', '300px');
test_invalidation_value('100vmin', '100px', '300px');
test_invalidation_value('100svh', '100px', '300px');
test_invalidation_value('100svb', '100px', '300px');
test_invalidation_value('100svmin', '100px', '300px');
test_invalidation_value('100lvh', '100px', '300px');
test_invalidation_value('100lvb', '100px', '300px');
test_invalidation_value('100lvmin', '100px', '300px');
test_invalidation_value('100dvh', '100px', '300px');
test_invalidation_value('100dvb', '100px', '300px');
test_invalidation_value('100dvmin', '100px', '300px');
</script>
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