viewport-units-invalidation.html

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This WPT test may be referenced by the following Test IDs:
- /css/css-values/viewport-units-invalidation.html - WPT Dashboard Interop Dashboard

<!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>