testing/web-platform/tests/css/css-text/text-autospace/text-autospace-mixed-001.html


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<!DOCTYPE html>
<meta charset="utf-8">
<link rel="help" href="https://drafts.csswg.org/css-text-4/#text-autospace-property">
<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../support/get-char-advances.js"></script>
<style>
.test {
  font-family: Ahem;
  font-size: 40px;
}
.no-autospace {
  text-autospace: no-autospace;
}
</style>
<div id="container">
  <div class="test" expect="1,5">国国&#x5d0;&#x5d1;&#x5d2;国国</div>
  <div class="test" expect="1,5">国国<span>&#x5d0;&#x5d1;</span>&#x5d2;国国</div>
  <div class="test" expect="1,11">国国&#1605;&#1615;&#1585;&#1614;&#1576;&#1614;&#1617;&#1593;&#1618;国国</div>
</div>
<script>
// Compute expected advances from advances without `text-autospace` and the
// `expect` attribute.
const container = document.getElementById('container');
container.classList.add('no-autospace');
const tests = [];
for (const element of document.getElementsByClassName('test')) {
  const em = parseFloat(getComputedStyle(element).fontSize);
  const spacing = em / 8;
  const advances = getCharAdvances(element);
  const expect = element.getAttribute('expect').split(',').map(i => parseInt(i));
  for (const i of expect) {
    advances[i] += spacing;
  }
  tests.push({element: element, advances: advances});
}

// Apply `text-autospace` and compare the actual advances.
container.classList.remove('no-autospace');
for (const t of tests) {
  const advances = getCharAdvances(t.element);
  test(() => {
    assert_array_equals(advances, t.advances);
  })
}
</script>