fix(core): Fix user-management:reset command (n8n-io#3403)

* 🐛 Fix `email` setting

* 🧪 Add test

* 🧪 Add expectation for user email

* ⚡ Replace request with helper

packages/cli/src/databases/entities/User.ts

@@ -133,7 +133,7 @@ export class User {
 	@BeforeInsert()
 	@BeforeUpdate()
 	preUpsertHook(): void {
-		this.email = this.email?.toLowerCase();
+		this.email = this.email?.toLowerCase() ?? null;
 		this.updatedAt = new Date();
 	}
 

packages/cli/test/integration/commands/reset.cmd.test.ts

@@ -0,0 +1,44 @@
+import { execSync } from 'child_process';
+
+import express from 'express';
+import path from 'path';
+
+import { Db } from '../../../src';
+import * as utils from '../shared/utils';
+import type { Role } from '../../../src/databases/entities/Role';
+import * as testDb from '../shared/testDb';
+import { randomEmail, randomName, randomValidPassword } from '../shared/random';
+
+let app: express.Application;
+let testDbName = '';
+let globalOwnerRole: Role;
+
+beforeAll(async () => {
+	app = utils.initTestServer({ endpointGroups: ['owner'], applyAuth: true });
+	const initResult = await testDb.init();
+	testDbName = initResult.testDbName;
+
+	globalOwnerRole = await testDb.getGlobalOwnerRole();
+});
+
+afterAll(async () => {
+	await testDb.terminate(testDbName);
+});
+
+test('user-management:reset should reset DB to default user state', async () => {
+	await testDb.createUser({ globalRole: globalOwnerRole });
+
+	const command = [path.join('bin', 'n8n'), 'user-management:reset'].join(' ');
+
+	execSync(command);
+
+	const user = await Db.collections.User.findOne();
+
+	expect(user?.email).toBeNull();
+	expect(user?.firstName).toBeNull();
+	expect(user?.lastName).toBeNull();
+	expect(user?.password).toBeNull();
+	expect(user?.resetPasswordToken).toBeNull();
+	expect(user?.resetPasswordTokenExpiration).toBeNull();
+	expect(user?.personalizationAnswers).toBeNull();
+});