update username

src/modules/authentication/tests/unit/interface/update-username.grpc.controller.spec.ts

@@ -0,0 +1,88 @@
+import { IdResponse } from '@mobicoop/ddd-library';
+import { RpcExceptionCode } from '@mobicoop/ddd-library';
+import { UsernameAlreadyExistsException } from '@modules/authentication/core/domain/authentication.errors';
+import { Type } from '@modules/authentication/core/domain/username.types';
+import { UpdateUsernameRequestDto } from '@modules/authentication/interface/grpc-controllers/dtos/update-username.request.dto';
+import { UpdateUsernameGrpcController } from '@modules/authentication/interface/grpc-controllers/update-username.grpc.controller';
+import { CommandBus } from '@nestjs/cqrs';
+import { RpcException } from '@nestjs/microservices';
+import { Test, TestingModule } from '@nestjs/testing';
+
+const updateUsernameRequest: UpdateUsernameRequestDto = {
+  userId: '78153e03-4861-4f58-a705-88526efee53b',
+  name: 'new-john.doe@email.com',
+  type: Type.EMAIL,
+};
+
+const mockCommandBus = {
+  execute: jest
+    .fn()
+    .mockImplementationOnce(() => 'new-john.doe@email.com')
+    .mockImplementationOnce(() => {
+      throw new UsernameAlreadyExistsException();
+    })
+    .mockImplementationOnce(() => {
+      throw new Error();
+    }),
+};
+
+describe('Update Username Grpc Controller', () => {
+  let updateUsernameGrpcController: UpdateUsernameGrpcController;
+
+  beforeAll(async () => {
+    const module: TestingModule = await Test.createTestingModule({
+      providers: [
+        {
+          provide: CommandBus,
+          useValue: mockCommandBus,
+        },
+        UpdateUsernameGrpcController,
+      ],
+    }).compile();
+
+    updateUsernameGrpcController = module.get<UpdateUsernameGrpcController>(
+      UpdateUsernameGrpcController,
+    );
+  });
+
+  afterEach(async () => {
+    jest.clearAllMocks();
+  });
+
+  it('should be defined', () => {
+    expect(updateUsernameGrpcController).toBeDefined();
+  });
+
+  it('should update a username', async () => {
+    jest.spyOn(mockCommandBus, 'execute');
+    const result: IdResponse =
+      await updateUsernameGrpcController.updateUsername(updateUsernameRequest);
+    expect(result).toBeInstanceOf(IdResponse);
+    expect(result.id).toBe('new-john.doe@email.com');
+    expect(mockCommandBus.execute).toHaveBeenCalledTimes(1);
+  });
+
+  it('should throw a dedicated RpcException if username already exists', async () => {
+    jest.spyOn(mockCommandBus, 'execute');
+    expect.assertions(3);
+    try {
+      await updateUsernameGrpcController.updateUsername(updateUsernameRequest);
+    } catch (e: any) {
+      expect(e).toBeInstanceOf(RpcException);
+      expect(e.error.code).toBe(RpcExceptionCode.ALREADY_EXISTS);
+    }
+    expect(mockCommandBus.execute).toHaveBeenCalledTimes(1);
+  });
+
+  it('should throw a generic RpcException', async () => {
+    jest.spyOn(mockCommandBus, 'execute');
+    expect.assertions(3);
+    try {
+      await updateUsernameGrpcController.updateUsername(updateUsernameRequest);
+    } catch (e: any) {
+      expect(e).toBeInstanceOf(RpcException);
+      expect(e.error.code).toBe(RpcExceptionCode.UNKNOWN);
+    }
+    expect(mockCommandBus.execute).toHaveBeenCalledTimes(1);
+  });
+});