Cleanup hsluv tests

Fix crash due to a missing file.

Simplify tests by only dealing with coords and not
creating PlainColorObjects.

Delete util.mjs and move the readTestData function to
the hsluv.js test module.

test/hsluv/hpluv.js

@@ -1,23 +1,23 @@
 import { to, sRGB, HPLuv } from "../../src/index-fn.js";
-import { check } from "../util.mjs";
-import { readTestData, normalizeCoords } from "./util.mjs";
+import * as check from "../../node_modules/htest.dev/src/check.js";
+import { readTestData } from "./hsluv.js";
 
 let json = readTestData();
 let srgbToHpluv = [];
 let hpluvToSrgb = [];
 
 Object.entries(json).forEach(([rgbHex, value]) => {
-	let coords = normalizeCoords(value.hpluv);
+	let coords = value.hpluv;
 	let rgb = value.rgb;
-	srgbToHpluv.push({ args: {space: sRGB, coords: rgb, alpha: 1}, expect: coords });
-	hpluvToSrgb.push({ args: {space: HPLuv, coords: coords, alpha: 1}, expect: rgb });
+	srgbToHpluv.push({ args: {space: sRGB, coords: rgb}, expect: coords });
+	hpluvToSrgb.push({ args: {space: HPLuv, coords: coords}, expect: rgb });
 });
 
 const tests = {
 	name: "HPLuv Conversion Tests",
 	description: "These tests compare sRGB values against the HSLuv reference implementation snapshot data.",
-	run (color, spaceId = this.data.toSpace) {
-		return to(color, spaceId).coords;
+	run (color, space = this.data.toSpace) {
+		return space.from(color.space, color.coords);
 	},
 	check: check.deep(function (actual, expect) {
 		if (expect === null || Number.isNaN(expect)) {

test/hsluv/hsluv.js

@@ -1,23 +1,36 @@
-import { to, sRGB, HSLuv } from "../../src/index-fn.js";
-import { check } from "../util.mjs";
-import { readTestData, normalizeCoords } from "./util.mjs";
+import { sRGB, HSLuv } from "../../src/index-fn.js";
+import * as check from "../../node_modules/htest.dev/src/check.js";
+import fs from "node:fs";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+
+export function readTestData () {
+	try {
+		const __dirname = path.dirname(fileURLToPath(import.meta.url));
+		const filePath = path.resolve(__dirname, "snapshot-rev4.json");
+		return JSON.parse(fs.readFileSync(filePath, "utf8"));
+	}
+	catch (err) {
+		console.error(err);
+	}
+}
 
 let json = readTestData();
 let srgbToHsluv = [];
 let hsluvToSrgb = [];
 
 Object.entries(json).forEach(([rgbHex, value]) => {
-	let coords = normalizeCoords(value.hsluv);
+	let coords = value.hsluv;
 	let rgb = value.rgb;
-	srgbToHsluv.push({ args: {space: sRGB, coords: rgb, alpha: 1}, expect: coords });
-	hsluvToSrgb.push({ args: {space: HSLuv, coords: coords, alpha: 1}, expect: rgb });
+	srgbToHsluv.push({ args: {space: sRGB, coords: rgb}, expect: coords });
+	hsluvToSrgb.push({ args: {space: HSLuv, coords: coords}, expect: rgb });
 });
 
 const tests = {
 	name: "HSLuv Conversion Tests",
 	description: "These tests compare sRGB values against the HSLuv reference implementation snapshot data.",
 	run (color, space = this.data.toSpace) {
-		return space.from(color);
+		return space.from(color.space, color.coords);
 	},
 	check: check.deep(function (actual, expect) {
 		if (expect === null || Number.isNaN(expect)) {