viewport-units-compute.html

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

<!DOCTYPE html>

<title>Resolving 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;

</style>

<iframe id=iframe></iframe>

<script>

const doc = iframe.contentDocument;

const win = iframe.contentWindow;

function test_computed_value(value, expected) {

  test((t) => {

    t.add_cleanup(() => { doc.body.innerHTML = ''; });

    doc.body.innerHTML = `

      <!doctype html>

      <style>

        * { margin: 0; }

        body { height: 100%; }

        div { height: ${value}; }

      </style>

      <div></div>

`;

    let div = doc.querySelector('div');

    assert_equals(win.getComputedStyle(div).height, expected);

  }, `${value} computes to ${expected}`);

test_computed_value('100vw', '200px');

test_computed_value('100vi', '200px');

test_computed_value('100vmax', '200px');

test_computed_value('100svw', '200px');

test_computed_value('100svi', '200px');

test_computed_value('100svmax', '200px');

test_computed_value('100lvw', '200px');

test_computed_value('100lvi', '200px');

test_computed_value('100lvmax', '200px');

test_computed_value('100dvw', '200px');

test_computed_value('100dvi', '200px');

test_computed_value('100dvmax', '200px');

test_computed_value('100vh', '100px');

test_computed_value('100vb', '100px');

test_computed_value('100vmin', '100px');

test_computed_value('100svh', '100px');

test_computed_value('100svb', '100px');

test_computed_value('100svmin', '100px');

test_computed_value('100lvh', '100px');

test_computed_value('100lvb', '100px');

test_computed_value('100lvmin', '100px');

test_computed_value('100dvh', '100px');

test_computed_value('100dvb', '100px');

test_computed_value('100dvmin', '100px');

test_computed_value('1dvw', '2px');

test_computed_value('10dvw', '20px');

test_computed_value('1dvh', '1px');

test_computed_value('10dvh', '10px');

test_computed_value('calc(1dvw + 1dvw)', '4px');

test_computed_value('calc(1dvw + 1dvh)', '3px');

test_computed_value('calc(1dvw + 100px)', '102px');

test_computed_value('max(1svw, 1svh)', '2px');

test_computed_value('min(1lvw, 1lvh)', '1px');

test_computed_value('calc(1dvw + 10%)', '12px');

</script>