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<!doctype html>
<meta charset="utf-8">
<title>CSSSkewX tests</title>
<link rel="help" href="https://drafts.css-houdini.org/css-typed-om-1/#cssskewx">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../resources/testhelper.js"></script>
<script>
'use strict';
const gInvalidTestCases = [
{ value: 'auto', desc: 'a keyword'},
{ value: 3.14, desc: 'a double'},
{ value: 0, desc: 'a unitless zero'},
{ value: '10deg', desc: 'a string angle'},
{ value: CSS.number(10), desc: 'a number CSSUnitValue'},
{ value: CSS.s(10), desc: 'a time dimension CSSUnitValue'},
{ value: new CSSMathSum(CSS.px(1)), desc: 'a CSSMathValue of length type' },
];
for (const {value, desc} of gInvalidTestCases) {
test(() => {
assert_throws(new TypeError(), () => new CSSSkewX(value));
}, 'Constructing a CSSSkewX with ' + desc + ' throws a TypeError');
}
for (const {value, desc} of gInvalidTestCases) {
test(() => {
let skewX = new CSSSkewX(CSS.deg(0));
assert_throws(new TypeError(), () => skewX.ax = value);
assert_style_value_equals(skewX.ax, CSS.deg(0));
}, 'Updating CSSSkewX.ax with ' + desc + ' throws a TypeError');
}
const gValidTestCases = [
{ value: CSS.deg(-3.14), desc: 'an angle CSSUnitValue' },
{ value: new CSSMathSum(CSS.deg(1)), desc: 'a CSSMathValue of angle type' },
];
for (const {value: ax, desc: axDesc} of gValidTestCases) {
test(() => {
const skewX = new CSSSkewX(ax);
assert_equals(skewX.ax, ax);
assert_true(skewX.is2D);
}, 'CSSSkewX can be constructed from ' + axDesc);
}
for (const {value, desc} of gValidTestCases) {
test(() => {
let skewX = new CSSSkewX(CSS.deg(0));
skewX.ax = value;
assert_style_value_equals(skewX.ax, value);
}, 'CSSSkew.ax can be updated to ' + desc);
}
test(() => {
let skewX = new CSSSkewX(CSS.deg(0));
skewX.is2D = false;
assert_true(skewX.is2D);
}, 'Modifying skewX.is2D is a no-op');
</script>