File: border-spacing-computed.html

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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>CSS Table Module: getComputedStyle().borderSpacing</title>
<link rel="help" href="https://drafts.csswg.org/css-tables/#propdef-border-spacing">
<meta name="assert" content="border-spacing computed value is two absolute lengths.">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/computed-testcommon.js"></script>
</head>
<body>
<div id="target"></div>
<style>
  #target {
    font-size: 40px;
  }
</style>
<script>
test_computed_value("border-spacing", "10px 20px");

// This should be "0px" and not "0px 0px" due to the shortest serialization principle:
// https://drafts.csswg.org/cssom/#serializing-css-values
// > If component values can be omitted or replaced with a shorter
// > representation without changing the meaning of the value, omit/replace them.
test_computed_value("border-spacing", "0", "0px");

test_computed_value("border-spacing", "calc(10px + 0.5em) calc(10px - 0.5em)", "30px 0px");
test_computed_value("border-spacing", "calc(10px - 0.5em) calc(10px + 0.5em)", "0px 30px");
</script>
</body>
</html>