Emilio Cobos Álvarez
746265b214
This implements https://github.com/w3c/csswg-drafts/issues/12906 for chrome contexts and nightly, for now, pending working group discussion. We might want to do this only for negative offset but that's a bit weird. For now do it unconditionally. Add a test and fix border-width-rounding to also test outline-width, and also report tests per entry, since we fail one subtest due to floating point precision. Differential Revision: https://phabricator.services.mozilla.com/D267770
52 lines
1.6 KiB
HTML
52 lines
1.6 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<title>
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CSS Border: width rounding
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</title>
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<link rel="author" title="Traian Captan" href="mailto:tcaptan@chromium.org">
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<link rel="help" href="https://www.w3.org/TR/css-backgrounds-3/#border-width">
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<meta name="assert" content="border-width computed value after rounding.">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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</head>
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<body>
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<h1>
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Test passes if border widths are rounded up
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when they are greater than 0 and less than 1,
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and rounded down when they are greater than 1.
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</h1>
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<script>
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const values = [
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{ input: "0px", expected: "0px" },
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{ input: "0.1px", expected: "1px" },
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{ input: "0.25px", expected: "1px" },
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{ input: "0.5px", expected: "1px" },
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{ input: "0.9px", expected: "1px" },
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{ input: "1px", expected: "1px" },
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{ input: "1.25px", expected: "1px" },
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{ input: "1.5px", expected: "1px" },
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{ input: "2px", expected: "2px" },
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{ input: "2.75px", expected: "2px" },
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{ input: "2.999px", expected: "2px" },
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];
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for (const { input, expected } of values) {
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const div = document.createElement("div");
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div.style = `border: solid ${input} blue; outline: solid ${input} purple; margin-bottom: 20px;`;
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document.body.appendChild(div);
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test(function() {
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assert_equals(getComputedStyle(div).borderWidth, expected);
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}, `border-width: ${input}`);
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test(function() {
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assert_equals(getComputedStyle(div).outlineWidth, expected);
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}, `outline-width: ${input}`);
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}
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</script>
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</body>
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</html>
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