testing/web-platform/tests/html/rendering/replaced-elements/images/img-sizes-auto.html


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<!doctype html>
<title>default styles for &lt;img sizes=auto></title>
<meta name="viewport" content="width=device-width">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/html/rendering/support/test-ua-stylesheet.js"></script>
<style>
/* Specify this bogus namespace, so the rules in this stylesheet only apply to the `fakeClone`d elements in #refs, not the HTML elements in #tests. */
@namespace url(urn:not-html);

img:is([sizes="auto" i], [sizes^="auto," i]) {
  contain: size !important;
  contain-intrinsic-size: 300px 150px;
}
</style>

<style>
/* Test !important */
img.test-important { contain: style; contain-intrinsic-size: 30px 15px; }
</style>

<div id="log"></div>

<div id="tests">
  <img sizes=auto>
  <img sizes=auto width=10 height=20>
  <img sizes=AuTo>
  <img sizes=auto,xyz>
  <img sizes=AuTo,xyz>

  <!-- UA style should not apply: -->
  <img>
  <img sizes>
  <img sizes=xyz,auto>
  <picture data-skip>
   <source data-skip sizes=auto>
   <img>
  </picture>

  <!-- Test !important -->
  <img sizes=auto class=test-important>
</div>

<div id="refs"></div>

<script>
  const props = [
    'contain',
    'contain-intrinsic-size'
  ];
  runUAStyleTests(props);

</script>