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/* Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/ */
"use strict";
/**
* Test color cycling regression - Bug 1303748.
*
* Values should cycle from a starting value, back to their original values. This can
* potentially be a little flaky due to the precision of different color representations.
*/
const { colorUtils } = require("resource://devtools/shared/css/color.js");
const getFixtureColorData = require("resource://test/helper_color_data.js");
function run_test() {
getFixtureColorData().forEach(
({ authored, name, hex, hsl, rgb, hwb, cycle }) => {
if (cycle) {
const nameCycled = runCycle(name, cycle);
const hexCycled = runCycle(hex, cycle);
const hslCycled = runCycle(hsl, cycle);
const rgbCycled = runCycle(rgb, cycle);
const hwbCycled = runCycle(hwb, cycle);
// Cut down on log output by only reporting a single pass/fail for the color.
ok(
nameCycled && hexCycled && hslCycled && rgbCycled && hwbCycled,
`${authored} was able to cycle back to the original value`
);
}
}
);
}
/**
* Test a color cycle to see if a color cycles back to its original value in a fixed
* number of steps.
*
* @param {string} value - The color value, e.g. "#000".
* @param {integer) times - The number of times it takes to cycle back to the
* original color.
*/
function runCycle(value, times) {
let color = new colorUtils.CssColor(value);
const colorUnit = colorUtils.classifyColor(value);
for (let i = 0; i < times; i++) {
const newColor = color.nextColorUnit();
color = new colorUtils.CssColor(newColor);
}
return color.toString(colorUnit) === value;
}
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