add tests

apps/api/src/domain/database/DatabaseModule.test.ts

@@ -0,0 +1,89 @@
+import { Test, TestingModule } from '@nestjs/testing';
+import { DatabaseModule } from './DatabaseModule';
+
+describe('DatabaseModule', () => {
+  let module: TestingModule;
+
+  beforeEach(async () => {
+    // Clear environment variables to ensure consistent test behavior
+    delete process.env.DATABASE_URL;
+    delete process.env.DATABASE_HOST;
+    delete process.env.DATABASE_PORT;
+    delete process.env.DATABASE_USER;
+    delete process.env.DATABASE_PASSWORD;
+    delete process.env.DATABASE_NAME;
+    delete process.env.NODE_ENV;
+
+    module = await Test.createTestingModule({
+      imports: [DatabaseModule],
+    }).compile();
+  });
+
+  it('should compile the module', () => {
+    expect(module).toBeDefined();
+  });
+
+  it('should configure TypeORM with DATABASE_URL when provided', async () => {
+    process.env.DATABASE_URL = 'postgres://user:pass@localhost:5432/testdb';
+    process.env.NODE_ENV = 'production';
+
+    const testModule = await Test.createTestingModule({
+      imports: [DatabaseModule],
+    }).compile();
+
+    expect(testModule).toBeDefined();
+  });
+
+  it('should configure TypeORM with individual connection parameters when DATABASE_URL is not provided', async () => {
+    process.env.DATABASE_HOST = 'localhost';
+    process.env.DATABASE_PORT = '5432';
+    process.env.DATABASE_USER = 'testuser';
+    process.env.DATABASE_PASSWORD = 'testpass';
+    process.env.DATABASE_NAME = 'testdb';
+    process.env.NODE_ENV = 'development';
+
+    const testModule = await Test.createTestingModule({
+      imports: [DatabaseModule],
+    }).compile();
+
+    expect(testModule).toBeDefined();
+  });
+
+  it('should use default values when connection parameters are not provided', async () => {
+    process.env.NODE_ENV = 'test';
+
+    const testModule = await Test.createTestingModule({
+      imports: [DatabaseModule],
+    }).compile();
+
+    expect(testModule).toBeDefined();
+  });
+
+  it('should enable synchronization in non-production environments', async () => {
+    process.env.NODE_ENV = 'development';
+
+    const testModule = await Test.createTestingModule({
+      imports: [DatabaseModule],
+    }).compile();
+
+    expect(testModule).toBeDefined();
+  });
+
+  it('should disable synchronization in production environment', async () => {
+    process.env.NODE_ENV = 'production';
+
+    const testModule = await Test.createTestingModule({
+      imports: [DatabaseModule],
+    }).compile();
+
+    expect(testModule).toBeDefined();
+  });
+
+  it('should auto load entities', async () => {
+    const testModule = await Test.createTestingModule({
+      imports: [DatabaseModule],
+    }).compile();
+
+    expect(testModule).toBeDefined();
+  });
+});