Add test to make sure generated data is the same as JS data (#225)

scripts/generate-data.mjs

@@ -1,5 +1,5 @@
 import * as fs from 'node:fs/promises';
-import {readGlobals} from './utilities.mjs';
+import {readGlobals} from '../utilities.mjs';
 
 const DATA_FILE = new URL('../globals.json', import.meta.url);
 

scripts/utilities.mjs

@@ -1,27 +1,11 @@
 import fs from 'node:fs/promises';
 import {outdent} from 'outdent';
-import {unique, sortObject} from '../utilities.mjs';
-
-const DATA_DIRECTORY = new URL('../data/', import.meta.url);
-
-const readGlobals = async (environment, {ignoreNonExits} = {}) => {
-	const file = new URL(`${environment}.mjs`, DATA_DIRECTORY);
-	file.searchParams.set('ts', Date.now());
-
-	let data;
-
-	try {
-		({default: data} = await import(file));
-	} catch (error) {
-		if (ignoreNonExits && error.code === 'ERR_MODULE_NOT_FOUND') {
-			return {};
-		}
-
-		throw error;
-	}
-
-	return data;
-};
+import {
+	DATA_DIRECTORY,
+	unique,
+	sortObject,
+	readGlobals,
+} from '../utilities.mjs';
 
 const writeGlobals = async (environment, globals) => {
 	const file = new URL(`${environment}.mjs`, DATA_DIRECTORY);
@@ -84,7 +68,6 @@ async function createGlobals(names, {
 }
 
 export {
-	readGlobals,
 	updateGlobals,
 	getGlobalThisProperties,
 	createGlobals,

test.mjs

@@ -1,4 +1,6 @@
+import fs from 'node:fs/promises';
 import test from 'ava';
+import {DATA_DIRECTORY, readGlobals} from './utilities.mjs';
 import globals from './index.js';
 
 test('main', t => {
@@ -81,3 +83,17 @@ test('es versions', t => {
 		previousVersion = {esVersion, globals: Object.keys(globals[esVersion])};
 	}
 });
+
+test('globals.json', async t => {
+	const files = await fs.readdir(DATA_DIRECTORY);
+	const environments = files.filter(filename => filename.endsWith('.mjs')).map(filename => filename.slice(0, -4));
+
+	const jsData = Object.fromEntries(
+		await Promise.all(environments.map(async environment => [environment, await readGlobals(environment)])),
+	);
+
+	t.deepEqual(
+		jsData,
+		globals,
+	);
+});

utilities.mjs

@@ -1,3 +1,24 @@
+const DATA_DIRECTORY = new URL('data/', import.meta.url);
+
+const readGlobals = async (environment, {ignoreNonExits} = {}) => {
+	const file = new URL(`${environment}.mjs`, DATA_DIRECTORY);
+	file.searchParams.set('ts', Date.now());
+
+	let data;
+
+	try {
+		({default: data} = await import(file));
+	} catch (error) {
+		if (ignoreNonExits && error.code === 'ERR_MODULE_NOT_FOUND') {
+			return {};
+		}
+
+		throw error;
+	}
+
+	return data;
+};
+
 const sortObject = object =>
 	Object.fromEntries(
 		Object.entries(object).sort(([propertyA], [propertyB]) =>
@@ -33,8 +54,10 @@ function getIntersectionGlobals(globalsA, globalsB) {
 }
 
 export {
+	DATA_DIRECTORY,
 	unique,
 	sortObject,
 	mergeGlobals,
 	getIntersectionGlobals,
+	readGlobals,
 };