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<!DOCTYPE html>
<html>
<head>
<title>CSS Cascade Layers: !important </title>
<meta name="assert" content="!important functionality of CSS Cascade Layers">
<link rel="author" title="Romain Menke" href="mailto:romainmenke@gmail.com">
<link rel="help" href="https://www.w3.org/TR/css-cascade-5/#cascade-layering">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
</head>
<body>
<target class="first"></target>
<target class="second"></target>
<div id="log"></div>
<script>
// In all test cases, the rule specified as "color: green" should win.
var testCases = [
{
title: 'A1 Unlayered !important style',
style: `
target { color: green !important; }
target { color: red; }
`
},
{
title: 'B1 Same specificity, layered !important first',
style: `
@layer { target { color: green !important; } }
target { color: red; }
`,
},
{
title: 'C1 Same specificity, layered !important second',
style: `
target { color: red; }
@layer { target { color: green !important; } }
`,
},
{
title: 'D1 Same specificity, all !important',
style: `
@layer { target { color: green !important; } }
@layer { target { color: red !important; } }
target { color: red !important; }
`,
},
{
title: 'D2 Same specificity, all !important',
style: `
@layer { target { color: green !important; } }
target { color: red !important; }
@layer { target { color: red !important; } }
`,
},
{
title: 'D3 Same specificity, all !important',
style: `
target { color: red !important; }
@layer { target { color: green !important; } }
@layer { target { color: red !important; } }
`,
},
{
title: 'D4 Same specificity, all !important',
style: `
@layer A, B;
@layer B { target { color: red !important; } }
@layer A { target { color: green !important; } }
target { color: red !important; }
`,
},
{
title: 'E1 Different specificity, all !important',
style: `
@layer { target { color: green !important; } }
@layer { target { color: red !important; } }
target.first { color: red !important; }
`,
},
{
title: 'E2 Different specificity, all !important',
style: `
@layer { target { color: green !important; } }
@layer { target.first { color: red !important; } }
target { color: red !important; }
`,
},
];
for (let testCase of testCases) {
const styleElement = document.createElement('style');
styleElement.textContent = testCase['style'];
document.head.append(styleElement);
test(function () {
var targets = document.querySelectorAll('target');
for (target of targets)
assert_equals(window.getComputedStyle(target).color, 'rgb(0, 128, 0)',
testCase['title'] + ", target '" + target.classList[0] + "'");
}, testCase['title']);
styleElement.remove();
}
</script>
</body>
</html>
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