[tests] migrate from jest to vitest (#3940)

This is a big change, but I think it's a good move, as `vitest` is much
more modern than `jest`.

I'm excited about the UI watch feature (run `npm run test:ui`), for
example - it's really helpful and saves time when debugging tests. I had
to adjust a few tests because they had time related issues, but
basically we are now testing the same things - even a bit better and
less flaky (I hope).

What do you think?

js/app.js

@@ -65,8 +65,8 @@ function App () {
 	async function loadConfig () {
 		Log.log("Loading config ...");
 		const defaults = require(`${__dirname}/defaults`);
-		if (process.env.JEST_WORKER_ID !== undefined) {
-			// if we are running with jest
+		if (global.mmTestMode) {
+			// if we are running in test mode
 			defaults.address = "0.0.0.0";
 		}
 
@@ -185,10 +185,10 @@ function App () {
 
 		if (defaultModules.includes(moduleName)) {
 			const defaultModuleFolder = path.resolve(`${global.root_path}/modules/default/`, module);
-			if (process.env.JEST_WORKER_ID === undefined) {
+			if (!global.mmTestMode) {
 				moduleFolder = defaultModuleFolder;
 			} else {
-				// running in Jest, allow defaultModules placed under moduleDir for testing
+				// running in test mode, allow defaultModules placed under moduleDir for testing
 				if (env.modulesDir === "modules" || env.modulesDir === "tests/mocks") {
 					moduleFolder = defaultModuleFolder;
 				}

js/electron.js

@@ -76,8 +76,8 @@ function createWindow () {
 
 	const electronOptions = Object.assign({}, electronOptionsDefaults, config.electronOptions);
 
-	if (process.env.JEST_WORKER_ID !== undefined && process.env.MOCK_DATE !== undefined) {
-		// if we are running with jest and we want to mock the current date
+	if (process.env.MOCK_DATE !== undefined) {
+		// if we are running tests and we want to mock the current date
 		const fakeNow = new Date(process.env.MOCK_DATE).valueOf();
 		Date = class extends Date {
 			constructor (...args) {
@@ -114,8 +114,8 @@ function createWindow () {
 
 	// Open the DevTools if run with "node --run start:dev"
 	if (process.argv.includes("dev")) {
-		if (process.env.JEST_WORKER_ID !== undefined) {
-			// if we are running with jest
+		if (process.env.mmTestMode) {
+			// if we are running tests
 			const devtools = new BrowserWindow(electronOptions);
 			mainWindow.webContents.setDevToolsWebContents(devtools.webContents);
 		}
@@ -169,8 +169,8 @@ function createWindow () {
 
 // Quit when all windows are closed.
 app.on("window-all-closed", function () {
-	if (process.env.JEST_WORKER_ID !== undefined) {
-		// if we are running with jest
+	if (process.env.mmTestMode) {
+		// if we are running tests
 		app.quit();
 	} else {
 		createWindow();

js/loader.js

@@ -84,7 +84,7 @@ const Loader = (function () {
 				if (window.name !== "jsdom") {
 					moduleFolder = defaultModuleFolder;
 				} else {
-					// running in Jest, allow defaultModules placed under moduleDir for testing
+					// running in test mode, allow defaultModules placed under moduleDir for testing
 					if (envVars.modulesDir === "modules") {
 						moduleFolder = defaultModuleFolder;
 					}

js/logger.js

@@ -1,7 +1,7 @@
 // This logger is very simple, but needs to be extended.
 (function (root, factory) {
 	if (typeof exports === "object") {
-		if (process.env.JEST_WORKER_ID === undefined) {
+		if (process.env.mmTestMode !== "true") {
 			const { styleText } = require("node:util");
 
 			// add timestamps in front of log messages
@@ -78,8 +78,8 @@
 	let logLevel;
 	let enableLog;
 	if (typeof exports === "object") {
-		// in nodejs and not running with jest
-		enableLog = process.env.JEST_WORKER_ID === undefined;
+		// in nodejs and not running in test mode
+		enableLog = process.env.mmTestMode !== "true";
 	} else {
 		// in browser and not running with jsdom
 		enableLog = typeof window === "object" && window.name !== "jsdom";
@@ -97,7 +97,7 @@
 			groupEnd: Function.prototype.bind.call(console.groupEnd, console),
 			time: Function.prototype.bind.call(console.time, console),
 			timeEnd: Function.prototype.bind.call(console.timeEnd, console),
-			timeStamp: Function.prototype.bind.call(console.timeStamp, console)
+			timeStamp: console.timeStamp ? Function.prototype.bind.call(console.timeStamp, console) : function () {}
 		};
 
 		logLevel.setLogLevel = function (newLevel) {

js/module_functions.js

@@ -5,8 +5,8 @@
  * @param {Promise} callback function to call when the timer expires
  */
 const scheduleTimer = function (timer, intervalMS, callback) {
-	if (process.env.JEST_WORKER_ID === undefined) {
-		// only set timer when not running in jest
+	if (process.env.mmTestMode !== "true") {
+		// only set timer when not running in test mode
 		let tmr = timer;
 		clearTimeout(tmr);
 		tmr = setTimeout(function () {

js/utils.js

@@ -34,7 +34,7 @@ module.exports = {
 			].join("\n");
 			Log.info(systemDataString);
 
-			// Return is currently only for jest
+			// Return is currently only for tests
 			return systemDataString;
 		} catch (error) {
 			Log.error(error);
@@ -65,8 +65,10 @@ module.exports = {
 				if (results && results.length > 0) {
 					// get the position parts and replace space with underscore
 					const positionName = results[1].replace(" ", "_");
-					// add it to the list
-					modulePositions.push(positionName);
+					// add it to the list only if not already present (avoid duplicates)
+					if (!modulePositions.includes(positionName)) {
+						modulePositions.push(positionName);
+					}
 				}
 			});
 			try {