script-created-link-stylesheet-does-not-block-script.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/script-created-link-stylesheet-does-not-block-script.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>Script-created link stylesheet is not script-blocking</title>

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

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

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

<script>

const link = document.createElement('link');

link.rel = 'stylesheet';

link.href = 'stylesheet.py?delay=1';

document.head.appendChild(link);

</script>

<h1>Some text</h1>

<script>

test(() => {

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

               'stylesheet should still be pending');

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

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

});

</script>