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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /css/css-typed-om/the-stylepropertymap/properties/stop-opacity.html - WPT Dashboard Interop Dashboard
<!doctype html>
<meta charset="utf-8">
<title>'stop-opacity' property</title>
<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_clamping_number(input, result) {
const number = input.to('number');
if (number.value < 0)
assert_style_value_equals(result, new CSSUnitValue(0, 'number'));
else if (number.value > 1)
assert_style_value_equals(result, new CSSUnitValue(1, 'number'));
else
assert_style_value_equals(result, input);
}
function assert_is_equal_with_clamping_percentage(input, result) {
const number = input.to('percent').value / 100.;
if (number < 0)
assert_style_value_equals(result, new CSSUnitValue(0, 'number'));
else if (number > 1)
assert_style_value_equals(result, new CSSUnitValue(1, 'number'));
else
assert_style_value_equals(result, new CSSUnitValue(number, 'number'));
}
runPropertyTests('stop-opacity', [
{
syntax: '<number>',
computed: assert_is_equal_with_clamping_number
},
{
syntax: '<percentage>',
computed: assert_is_equal_with_clamping_percentage
},
]);
</script>