85 lines
2.7 KiB
HTML
85 lines
2.7 KiB
HTML
<!DOCTYPE html>
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<title>CSS Syntax: Rules that look like custom properties</title>
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<link rel="help" href="https://drafts.csswg.org/css-syntax/#consume-qualified-rule">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<style id=stylesheet1>
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.a { }
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--x:hover { } /* Ambiguous "rule" */
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.b { }
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</style>
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<script>
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test(() => {
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let rules = stylesheet1.sheet.rules;
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assert_equals(rules.length, 2);
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assert_equals(rules[0].selectorText, '.a');
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assert_equals(rules[1].selectorText, '.b');
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}, 'Rule that looks like a custom property declaration is ignored');
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</script>
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<!-- https://github.com/w3c/csswg-drafts/issues/9336 -->
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<style id=stylesheet2>
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.a { }
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--x:hover { ] } /* Ambiguous "rule" */
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.b { }
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</style>
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<script>
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test(() => {
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let rules = stylesheet2.sheet.rules;
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assert_equals(rules.length, 2);
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assert_equals(rules[0].selectorText, '.a');
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assert_equals(rules[1].selectorText, '.b');
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}, 'Rule that looks like an invalid custom property declaration is ignored');
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</script>
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<style id=stylesheet3>
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div {
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.a { }
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--x:hover { }
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.b { }
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}
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</style>
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<script>
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test(() => {
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let rules = stylesheet3.sheet.rules;
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assert_equals(rules.length, 1);
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assert_equals(rules[0].selectorText, 'div');
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let div = rules[0];
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let childRules = div.cssRules;
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assert_equals(childRules.length, 2);
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assert_equals(childRules[0].selectorText, '& .a');
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assert_true(childRules[1] instanceof CSSNestedDeclarations)
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let x = childRules[1].style.getPropertyValue('--x');
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assert_equals(x.trim(), 'hover { }\n .b { }');
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}, 'Nested rule that looks like a custom property declaration');
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</script>
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<!-- https://github.com/w3c/csswg-drafts/issues/9336 -->
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<style id=stylesheet4>
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div {
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.a { }
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--x:hover { ] }
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.b { }
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}
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</style>
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<script>
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test(() => {
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let rules = stylesheet4.sheet.rules;
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assert_equals(rules.length, 1);
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assert_equals(rules[0].selectorText, 'div');
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let div = rules[0];
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// There is no valid --x declaration, because mismatched ] is not allowed
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// in custom properties.
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let x = div.style.getPropertyValue('--x');
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assert_equals(x, '');
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// We should also not have restarted parsing as a nested style rule,
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// and instead we should have "consumed the remnants of a bad declaration",
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// which skips to the next semicolon (or end-of-block).
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// So in other words, there should be no nested '.b.' child rule here.
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let childRules = div.cssRules;
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assert_equals(childRules.length, 1);
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assert_equals(childRules[0].selectorText, '& .a');
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}, 'Nested rule that looks like an invalid custom property declaration');
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</script>
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