NestJs-开玩笑-测试：ConnectionNotFoundError：未找到连接“默认”

Question

我正在尝试编写一个简单的TODO App的测试。

这是我的测试班：

    const mockTaskRepository = () => ({
        createTask: jest.fn(),
    });

    describe('TasksService', () => {
        let tasksService;
        let taskRepository;

      beforeEach(async () => {
            const module = await Test.createTestingModule({
                providers: [TasksService, { provide: TaskRepository, useFactory: mockTaskRepository }],
            }).compile();

            tasksService = await module.get<TasksService>(TasksService);
            taskRepository = await module.get<TaskRepository>(TaskRepository);
        });

      describe('create task', () => {
            it('calls taskRepository.create() and returns the result', async () => {
                const createTaskDto = {
                    title: 'Test task',
                    description: 'Test desc',
                };
                taskRepository.createTask.mockResolvedValue('someTask');
                expect(taskRepository.createTask).not.toHaveBeenCalled();
                const result = await tasksService.createTask(createTaskDto);
                expect(taskRepository.createTask).toHaveBeenCalledWith(createTaskDto);
                expect(result).toEqual('someValue');
            });
        });
    });

[当我尝试运行“创建任务”测试时，发生以下错误。

FAIL  src/tasks/tasks.service.spec.ts
  ● TasksService › create task › calls taskRepository.create() and returns the result

    ConnectionNotFoundError: Connection "default" was not found.

      at new ConnectionNotFoundError (error/ConnectionNotFoundError.ts:8:9)
      at ConnectionManager.Object.<anonymous>.ConnectionManager.get (connection/ConnectionManager.ts:40:19)
      at Object.getConnection (index.ts:247:35)
      at Function.Object.<anonymous>.BaseEntity.getRepository (repository/BaseEntity.ts:85:72)
      at Task.Object.<anonymous>.BaseEntity.save (repository/BaseEntity.ts:50:42)
      at TasksService.createTask (tasks/tasks.service.ts:35:14)
      at Object.<anonymous> (tasks/tasks.service.spec.ts:69:38)

Test Suites: 1 failed, 1 passed, 2 total
Tests:       1 failed, 8 passed, 9 total

任何人都知道代码中的错误吗？

更新：

我将提供程序更改为{提供：getRepositoryToken（Task），useFactory：mockTaskRepository，但错误仍然存​​在。

这是我的TaskModule：

@Module({
    imports: [TypeOrmModule.forFeature([TaskRepository]), AuthModule],
    controllers: [TasksController],
    providers: [TasksService],
})
export class TasksModule {}

上面是我的TaskService：

import { CreateTaskDto } from 'src/DTO/create-task.DTO';
import { GetTasksFiltersDto } from 'src/DTO/get-task-filter.dto';

import {
    Get,
    GoneException,
    Injectable,
    NotFoundException,
    Param,
    ParseIntPipe,
} from '@nestjs/common';
import { handleRetry, InjectRepository } from '@nestjs/typeorm';

import { TaskStatus } from './task-status.enum';
import { Task } from './task.entity';
import { TaskRepository } from './task.repository';

@Injectable()
export class TasksService {
    constructor(
        @InjectRepository(TaskRepository)
        private taskRepository: TaskRepository,
    ) {}

    async createTask(createTaskDto: CreateTaskDto): Promise<Task> {
        const { title, description } = createTaskDto;
        const task = new Task();
        task.title = title;

        task.description = description;
        task.status = TaskStatus.IN_PROGRESS;
        await task.save();

        return task;
    }
}

我不知道是否有影响，但我正在使用dotenv。

我的Main.ts

async function bootstrap() {
    dotenvFlow.config();
    const app = await NestFactory.create(AppModule);
    await app.listen(3000);
}
bootstrap();

我的AppModule是：

@Module({
    imports: [
        ConfigModule.load(path.resolve(__dirname, 'config', '**/!(*.d).{ts,js}')),
        TypeOrmModule.forRootAsync({
            useFactory: (config: ConfigService) => config.get('database'),
            inject: [ConfigService],
        }),
        TasksModule,
        AuthModule,
    ],
    controllers: [],
    providers: [],
})
export class AppModule {}

提前感谢！

Answer 1

如果正在寻找连接default，则我认为仍在考虑TypeOrmModule配置。如果您有TaskEntity，请尝试将其更改为provide: TaskRepository，而不是provide: getRepositoryToken(TaskEntity)。这将告诉Nest覆盖@InjectRepository()装饰器尝试提供的默认存储库。

如果不是这种情况，您认为您也可以添加TaskService和TaskModule类吗？