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<!doctype html>
<meta charset="utf-8">
<title>'letter-spacing' property</title>
<link rel="help" href="https://drafts.css-houdini.org/css-typed-om-1/#dom-stylepropertymap-get">
<link rel="help" href="https://drafts.css-houdini.org/css-typed-om-1/#dom-stylepropertymap-set">
<link rel="help" href="https://drafts.css-houdini.org/css-typed-om-1/#property-stle-value-normalization">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../../resources/testhelper.js"></script>
<script src="resources/testsuite.js"></script>
<body>
<div id="log"></div>
<script>
'use strict';
function assert_is_equal_with_zero_special_handling(input, result) {
let is_zero_length = true;
if (input instanceof CSSMathSum) {
for (let operand of input.values)
is_zero_length &&= (operand.value == 0);
} else
is_zero_length = input.value == 0;
// Per the specification, a computed letter-spacing of zero yields a resolved value (getComputedStyle()
// return value) of normal.
if (is_zero_length)
assert_style_value_equals(result, new CSSKeywordValue("normal"));
else
assert_is_unit('px', result); // Same check as in testsuite.js
}
runPropertyTests('letter-spacing', [
{ syntax: 'normal' },
{
syntax: '<length>',
computed: assert_is_equal_with_zero_special_handling
},
{ syntax: '<percentage>' },
]);
</script>
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