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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /css/css-typed-om/stylevalue-subclasses/cssHSL.html - WPT Dashboard Interop Dashboard
<!doctype html>
<meta charset="utf-8">
<title>CSSHSL tests</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../resources/testhelper.js"></script>
<script>
'use strict';
const gUndefinedKeyword = new CSSKeywordValue("undefined");
const gValidHueInputs = [
{hue: 180, desc: "a number", expected: CSS.deg(180)},
{hue: CSS.deg(180), desc: 'degrees', expected: CSS.deg(180)},
{hue: CSS.rad(1), desc: 'radians', expected: CSS.rad(1)},
{hue: CSS.grad(81), desc: 'gradians', expected: CSS.grad(81)},
{hue: undefined, desc: "undefined", expected: gUndefinedKeyword},
];
const gInvalidHueInputs = [
{hue: CSS.px(1), desc: "css pixels"},
{hue: CSS.em(1), desc: "css em"},
]
for (const {hue, desc, expected} of gValidHueInputs) {
test(() => {
const result = new CSSHSL(hue, 0.5, 0.5);
assert_color_channel_approx_equals(result.h, expected);
}, `Constructing a CSSHSL with ${desc} for the hue works as intended.`);
test(() => {
const result = new CSSHSL(CSS.deg(0), 0.5, 0.5);
result.h = hue;
assert_color_channel_approx_equals(result.h, expected);
}, `CSSHSL.h can be updated with a ${desc}.`);
}
for (const {hue, desc} of gInvalidHueInputs) {
test(() => {
assert_throws_dom("SyntaxError", () => new CSSHSL(hue, 0, 0));
}, `Constructing a CSSHSL with ${desc} for hue throws a SyntaxError.`);
}
test(() => {
const result = new CSSHSL(CSS.deg(27), 0.7, CSS.percent(91));
assert_color_channel_approx_equals(result.h, CSS.deg(27));
assert_color_channel_approx_equals(result.s, CSS.percent(70));
assert_color_channel_approx_equals(result.l, CSS.percent(91));
assert_color_channel_approx_equals(result.alpha, CSS.percent(100));
}, 'CSSHSL can be constructed from three numbers and will get an alpha of 100%.');
test(() => {
const result = new CSSHSL(CSS.grad(101), 0.2, 0.3, CSS.percent(0.4));
assert_color_channel_approx_equals(result.h, CSS.grad(101));
assert_color_channel_approx_equals(result.s, CSS.percent(20));
assert_color_channel_approx_equals(result.l, CSS.percent(30));
assert_color_channel_approx_equals(result.alpha, CSS.percent(0.4));
}, 'CSSHSL can be constructed from four numbers.');
test(() => {
assert_throws_dom("SyntaxError", () => new CSSHSL(CSS.deg(0), CSS.number(1), 0, 0));
assert_throws_dom("SyntaxError", () => new CSSHSL(CSS.deg(0), 0, CSS.number(1), 0));
assert_throws_dom("SyntaxError", () => new CSSHSL(CSS.deg(0), 0, 0, CSS.number(1)));
}, `Constructing a CSSHSL with CSS.number for s, l or alpha throws a TypeError`);
for (const attr of ['s', 'l', 'alpha']) {
test(() => {
const result = new CSSHSL(CSS.deg(0), 0, 0);
assert_throws_dom("SyntaxError", () => result[attr] = CSS.number(1));
}, `Updating a CSSHSL with CSS.number for ${attr} throws a SyntaxError`);
test(() => {
const result = new CSSHSL(CSS.deg(0), 0, 0);
result[attr] = 0.5;
assert_color_channel_approx_equals(result[attr], CSS.percent(50));
}, 'CSSHSL.' + attr + ' can be updated to a number.');
test(() => {
const result = new CSSHSL(CSS.deg(0), 0, 0);
result[attr] = CSS.percent(50);
assert_color_channel_approx_equals(result[attr], CSS.percent(50));
}, 'CSSHSL.' + attr + ' can be updated with a CSS percent.');
}
</script>