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border-block-width-computed.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>CSS Logical Properties and Values: getComputedStyle().borderBlockWidth</title>
<link rel="help" href="https://drafts.csswg.org/css-logical/#propdef-border-block-width">
<meta name="assert" content="border-block-width is absolute length; zero if the border block style is none or hidden.">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/computed-testcommon.js"></script>
</head>
<body>
<div id="box"></div>
<div id="target"></div>
<style>
#box {
border-style: dotted; /* Avoid border-*-width computed style 0 */
border-top-width: thin;
border-right-width: medium;
border-bottom-width: thick;
}
#target {
font-size: 40px;
border-block-style: dotted; /* Avoid border-block-*-width computed style 0 */
}
</style>
<script>
'use strict';
const box = document.getElementById('box');
const thinWidth = getComputedStyle(box).borderTopWidth;
const mediumWidth = getComputedStyle(box).borderRightWidth;
const thickWidth = getComputedStyle(box).borderBottomWidth;
test_computed_value("border-block-start-width", "calc(10px + 0.5em)", "30px");
test_computed_value("border-block-start-width", "calc(10px - 0.5em)", "0px");
test_computed_value("border-block-start-width", "thin", thinWidth);
test_computed_value("border-block-start-width", "medium", mediumWidth);
test_computed_value("border-block-end-width", "calc(10px + 0.5em)", "30px");
test_computed_value("border-block-end-width", "calc(10px - 0.5em)", "0px");
test_computed_value("border-block-end-width", "thick", thickWidth);
test_computed_value("border-block-width", "10px");
test_computed_value("border-block-width", "10px 20px");
test_computed_value("border-block-width", "10px 10px", "10px");
test(() => {
box.style.borderBlockStartWidth = '10px';
box.style.borderBlockEndWidth = '10px';
box.style.borderBlockStartStyle = 'groove';
box.style.borderBlockEndStyle = 'solid';
assert_equals(getComputedStyle(box).borderBlockStartWidth, '10px');
assert_equals(getComputedStyle(box).borderBlockEndWidth, '10px');
assert_equals(getComputedStyle(box).borderBlockWidth, '10px');
box.style.borderBlockStartStyle = 'hidden';
box.style.borderBlockEndStyle = 'dashed';
assert_equals(getComputedStyle(box).borderBlockStartWidth, '0px');
assert_equals(getComputedStyle(box).borderBlockEndWidth, '10px');
assert_equals(getComputedStyle(box).borderBlockWidth, '0px 10px');
box.style.borderBlockStartStyle = 'inset';
box.style.borderBlockEndStyle = 'none';
assert_equals(getComputedStyle(box).borderBlockStartWidth, '10px');
assert_equals(getComputedStyle(box).borderBlockEndWidth, '0px');
assert_equals(getComputedStyle(box).borderBlockWidth, '10px 0px');
box.style.borderBlockStartStyle = 'none';
box.style.borderBlockEndStyle = 'hidden';
assert_equals(getComputedStyle(box).borderBlockStartWidth, '0px');
assert_equals(getComputedStyle(box).borderBlockEndWidth, '0px');
assert_equals(getComputedStyle(box).borderBlockWidth, '0px');
}, 'width is zero if the border block style is none or hidden');
</script>
</body>
</html>