Write basic app tests with Node version check

__tests__/routes.test.js

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+const request = require('supertest');
+const app = require('../app');
+
+describe('Basic API Routes', () => {
+  describe('GET /test', () => {
+    it('should return 200 and a welcome message', async () => {
+      const response = await request(app)
+        .get('/test')
+        .expect(200);
+
+      expect(response.body).toHaveProperty('message');
+      expect(response.body.message).toContain('Hello there');
+    });
+  });
+
+  describe('GET /logout', () => {
+    it('should return 200', async () => {
+      await request(app)
+        .get('/logout')
+        .expect(200);
+    });
+  });
+
+  describe('POST /login', () => {
+    it('should return 401 when no credentials provided', async () => {
+      const response = await request(app)
+        .post('/login')
+        .send({})
+        .expect(401);
+
+      expect(response.body).toHaveProperty('message');
+      expect(response.body.message).toBe('Bad credentials');
+    });
+
+    it('should return 401 when invalid credentials provided', async () => {
+      const response = await request(app)
+        .post('/login')
+        .send({
+          username: 'invalid',
+          password: 'invalid'
+        })
+        .expect(401);
+
+      expect(response.body).toHaveProperty('message');
+    });
+  });
+});

__tests__/utils.test.js

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+const toSafeName = require('../lib/utils/toSafeName');
+
+describe('Utility Functions', () => {
+  describe('toSafeName', () => {
+    it('should convert string to lowercase', () => {
+      expect(toSafeName('UPPERCASE')).toBe('uppercase');
+    });
+
+    it('should replace ampersands with "and"', () => {
+      expect(toSafeName('Tom & Jerry')).toBe('tom_and_jerry');
+    });
+
+    it('should replace special characters with underscores', () => {
+      expect(toSafeName('hello@world!')).toBe('hello_world_');
+    });
+
+    it('should replace spaces with underscores', () => {
+      expect(toSafeName('hello world')).toBe('hello_world');
+    });
+
+    it('should handle mixed cases correctly', () => {
+      expect(toSafeName('Project-Name & Test 123!')).toBe('project_name_and_test_123_');
+    });
+
+    it('should keep alphanumeric characters', () => {
+      expect(toSafeName('abc123')).toBe('abc123');
+    });
+
+    it('should handle empty string', () => {
+      expect(toSafeName('')).toBe('');
+    });
+  });
+});

jest.config.js

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+module.exports = {
+  testEnvironment: 'node',
+  testMatch: ['**/__tests__/**/*.test.js', '**/*.spec.js'],
+  testPathIgnorePatterns: ['/node_modules/', '/datastore/', '/files/', '/docs/'],
+  collectCoverageFrom: [
+    '**/*.js',
+    '!**/node_modules/**',
+    '!**/coverage/**',
+    '!**/datastore/**',
+    '!**/files/**',
+    '!**/docs/**',
+    '!**/__tests__/**',
+    '!jest.config.js',
+  ],
+  coverageDirectory: 'coverage',
+  testTimeout: 10000,
+  // Don't transform files - use native Node.js CommonJS support
+  transform: {},
+};