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Test Info: Warnings
- This test has a WPT meta file that expects 2 subtest issues.
- This WPT test may be referenced by the following Test IDs:
- /shadow-dom/declarative/tentative/shadowrootadoptedstylesheets/shadowrootadoptedstylesheets-multiple.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<title>Multiple specifiers in shadowrootadoptedstylesheets</title>
<meta name="author" title="Kurt Catti-Schmidt" href="mailto:kschmi@microsoft.com" />
<script src='/resources/testharness.js'></script>
<script src='/resources/testharnessreport.js'></script>
<!-- Use a dataURI + import map so this can be performed in-document. -->
<script type="importmap">
{
"imports": {
"foo": "data:text/css,span {color:blue}",
"bar": "data:text/css,span {text-decoration: underline}"
}
}
</script>
<div id="host">
<template shadowrootmode="open" shadowrootadoptedstylesheets="foo bar">
<span id="test_element">Test content</span>
</template>
</div>
<script>
const host = document.getElementById("host");
test(function (t) {
assert_equals(
host.shadowRoot.adoptedStyleSheets.length,
2,
"The shadowrootadoptedstylesheets will declaratively import all space-separated 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)",
"The first specifier's style was applied.");
assert_equals(getComputedStyle(test_element)
.textDecoration, "underline",
"The second specifier's style was applied.");
}, "Styles from the sheets applied via shadowrootadoptedstylesheets are applied to elements.");
</script>