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<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Scoping: ::slotted pseudo parsing</title>
<link rel="author" title="Rune Lillesveen" href="mailto:rune@opera.com">
<link rel="help" href="https://drafts.csswg.org/css-scoping/#slotted-pseudo">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style id="styleElm">
</style>
<script>
function parse_selector(selector_text) {
try {
styleElm.sheet.insertRule(selector_text+"{}");
styleElm.sheet.deleteRule(0);
return true;
} catch (ex) {
return false;
}
}
function test_valid_selector(selector_text) {
test(function(){
assert_true(parse_selector(selector_text));
}, "Should be a valid selector: '" + selector_text + "'");
}
function test_invalid_selector(selector_text) {
test(function(){
assert_false(parse_selector(selector_text));
}, "Should be an invalid selector: '" + selector_text + "'");
}
test_invalid_selector("::slotted");
test_invalid_selector("::slotted()");
test_invalid_selector("::slotted(*).class");
test_invalid_selector("::slotted(*)#id {}");
test_invalid_selector("::slotted(*)[attr]");
test_invalid_selector("::slotted(*):hover");
test_invalid_selector("::slotted(*):read-only");
test_invalid_selector("::slotted(*)::slotted(*)");
test_invalid_selector("::slotted(*)::before::slotted(*)");
test_invalid_selector("::slotted(*) span");
test_valid_selector("::slotted(*)");
test_valid_selector("::slotted(div)");
test_valid_selector("::slotted([attr]:hover)");
test_valid_selector("::slotted(:not(.a))");
// Allow tree-abiding pseudo elements after ::slotted
test_valid_selector("::slotted(*)::before");
test_valid_selector("::slotted(*)::after");
test_valid_selector("::slotted(*)::placeholder");
test_valid_selector("::slotted(*)::marker");
// Other pseudo elements not valid after ::slotted
test_invalid_selector("::slotted(*)::first-line");
test_invalid_selector("::slotted(*)::first-letter");
test_invalid_selector("::slotted(*)::selection");
</script>
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