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<!doctype html>
<title>Simple CSSOM manipulation of subrules</title>
<link rel="author" title="Steinar H. Gunderson" href="mailto:sesse@chromium.org">
<link rel="help" href="https://drafts.csswg.org/css-nesting-1/">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style id="ss">
div {
/* This is not a conditional rule, and thus cannot be in nesting context. */
@font-face {
&.a { font-size: 10px; }
}
@media screen {
&.a { color: red; }
/* Same. */
@font-face {
&.a { font-size: 10px; }
}
}
}
</style>
<script>
test(() => {
let [ss] = document.styleSheets;
assert_equals(ss.cssRules.length, 1);
// The @font-face rule should be ignored.
assert_equals(ss.cssRules[0].cssText,
`div {
@media screen {
&.a { color: red; }
}
}`);
});
test(() => {
let [ss] = document.styleSheets;
assert_equals(ss.cssRules.length, 1);
assert_throws_dom('HierarchyRequestError',
() => { ss.cssRules[0].cssRules[0].insertRule('@font-face {}', 0); });
assert_throws_dom('HierarchyRequestError',
() => { ss.cssRules[0].insertRule('@font-face {}', 0); });
// The @font-face rules should be ignored (again).
assert_equals(ss.cssRules[0].cssText,
`div {
@media screen {
&.a { color: red; }
}
}`);
});
</script>
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