Changes to test/util/. All files

test/util/util.js

new file mode 100644@@ -0,0 +1,44 @@+const { spawn } = require("node:child_process");+const path = require("node:path");++function spawnPromisified(...args) {+	let stderr = "";+	let stdout = "";++	const child = spawn(...args);+	child.stderr.setEncoding("utf8");+	child.stderr.on("data", (data) => {+		stderr += data;+	});+	child.stdout.setEncoding("utf8");+	child.stdout.on("data", (data) => {+		stdout += data;+	});++	return new Promise((resolve, reject) => {+		child.on("close", (code, signal) => {+			resolve({+				code,+				signal,+				stderr,+				stdout,+			});+		});+		child.on("error", (code, signal) => {+			reject({+				code,+				signal,+				stderr,+				stdout,+			});+		});+	});+}++const fixturesDir = path.join(__dirname, "..", "fixtures");++function fixturesPath(...args) {+	return path.join(fixturesDir, ...args);+}++module.exports = { spawnPromisified, fixturesPath };