link-stylesheet-with-non-match-media-does-not-block-render.tentative.html

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This WPT test may be referenced by the following Test IDs:
- /html/semantics/document-metadata/interactions-of-styling-and-scripting/link-stylesheet-with-non-match-media-does-not-block-render.tentative.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>

  Delayed Stylesheet imported using link tag should not block rendering

  or JS execution when media doesn't match.

</title>

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<script src="support/utils.js"></script>

<link rel="stylesheet" href="support/link-style.css?pipe=trickle(d1)"

  media="print" onload="this.media='all'">

<h1>

  This text is black in color till stylesheet is fetched.

</h1>

<script>

test(() => {

  assert_false(styleExists("h1 { color: purple; }"),

               'Stylesheet should still be pending due to delay');

  const h1 = document.querySelector('h1');

  assert_equals(getComputedStyle(h1).color, 'rgb(0, 0, 0)');

});

</script>