tests

apps/api/src/domain/hello/HelloController.test.ts

@@ -0,0 +1,52 @@
+import { describe, it, expect, vi } from 'vitest';
+import { HelloController } from './HelloController';
+
+describe('HelloController', () => {
+  let controller: HelloController;
+  let mockService: { getHello: ReturnType<typeof vi.fn> };
+
+  beforeEach(() => {
+    mockService = {
+      getHello: vi.fn(),
+    };
+
+    controller = new HelloController(mockService as never);
+  });
+
+  describe('health', () => {
+    it('should return health status', async () => {
+      const result = await controller.health();
+
+      expect(result).toEqual({ status: 'ok' });
+    });
+  });
+
+  describe('getHello', () => {
+    it('should return hello message from service', async () => {
+      const helloMessage = 'Hello World';
+      mockService.getHello.mockReturnValue(helloMessage);
+
+      const result = await controller.getHello();
+
+      expect(mockService.getHello).toHaveBeenCalledTimes(1);
+      expect(result).toBe(helloMessage);
+    });
+
+    it('should return custom hello message', async () => {
+      const customMessage = 'Hello from Test';
+      mockService.getHello.mockReturnValue(customMessage);
+
+      const result = await controller.getHello();
+
+      expect(result).toBe(customMessage);
+    });
+
+    it('should handle empty string from service', async () => {
+      mockService.getHello.mockReturnValue('');
+
+      const result = await controller.getHello();
+
+      expect(result).toBe('');
+    });
+  });
+});