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Test Info: Warnings
- This test has a WPT meta file that expects 1 subtest issues.
- This WPT test may be referenced by the following Test IDs:
- /shadow-dom/declarative/tentative/shadowrootadoptedstylesheets/shadowrootadoptedstylesheets-async-fetch-duplicate-importmap.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<title>shadowrootadoptedstylesheets: duplicate bare specifiers via import map</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>
<script src='./support/helpers.js'></script>
<script type="importmap">
{
"imports": {
"my-styles": "data:text/css,span { color: green }"
}
}
</script>
<body>
<script>
test(function (t) {
const { shadowRoot, testElement } = createStylesheetHost(
"my-styles my-styles");
assert_equals(shadowRoot.adoptedStyleSheets.length, 1,
"Duplicate bare specifiers via import map should be deduplicated.");
assertSheetRule(shadowRoot, 0, "span { color: green; }", "Import-mapped");
assert_equals(
getComputedStyle(testElement).color,
"rgb(0, 128, 0)",
"Green styles from the import-mapped specifier should be applied.");
}, "Duplicate bare specifiers via import map are deduplicated and applied.");
</script>
</body>