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[CSS Modules] synchronously process blob URLs #55779

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[CSS Modules] synchronously process blob URLs #55779

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36 changes: 36 additions & 0 deletions ...ve/shadowrootadoptedstylesheets/shadowrootadoptedstylesheets-with-declarative-module.html
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Original file line number Diff line number Diff line change
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<!DOCTYPE html>
<title>shadowrootadoptedstylesheets with Declarative CSS Module</title>
<meta name="author" title="Kurt Catti-Schmidt" href="mailto:[email protected]" />
<link rel='help' href='https://github.com/whatwg/html/pull/11687'>
<script src='/resources/testharness.js'></script>
<script src='/resources/testharnessreport.js'></script>

<style type="module" specifier="foo">
span {color:blue}
</style>

<div id="host">
<template shadowrootmode="open" shadowrootadoptedstylesheets="foo">
<span id="test_element">Test content</span>
</template>
</div>

<script>
const host = document.getElementById("host");
test(function (t) {
assert_equals(
host.shadowRoot.adoptedStyleSheets.length,
1,
"The shadowrootadoptedstylesheets will declaratively import named specifiers into the adoptedStyleSheets array.",
);

}, "adoptedStyleSheets is populated from a <template> element's shadowrootadoptedstylesheets attribute.");
const test_element = host.shadowRoot.getElementById("test_element");

test(function (t) {
assert_equals(getComputedStyle(test_element)
.color, "rgb(0, 0, 255)",
"Declarative styles were applied.");

}, "Styles from the adoptedStyleSheets are applied to elements.");
</script>