NestJS 问题模拟 axios obersvable 响应

Question

我在单元测试中模拟 nestjs/axios 调用时遇到问题。

我尝试模拟实现，但它总是超时，这意味着它无法正常工作

jest.spyOn(httpService, 'get').mockImplementationOnce(() => of(result))

const response: CustomerDetail =  await client.getCustomerDetails('1');
expect(response).toBeDefined();

下面是我要测试的代码示例。注意：我正在使用 lastValueFrom 将 observable 转换为 promise。

@Injectable()
export class CustomerDetailsClient {

  constructor(private httpService: HttpService) {}

  async getCustomerDetails(customerId: string): Promise < CustomerDetail > {

    let customerDetails: Promise < CustomerDetail > = null;

    try {
      customerDetails = await lastValueFrom(this.httpService.get(`localhost:80/customers/${customerId}/details`)
        .pipe(
          map((response) => {
            return response.data
          }),
        ),
      );
    } catch (e) {
      throw new InternalServerErrorException('A system error occurred');
    }

    return customerDetails;
  }
}

如有任何帮助，我们将不胜感激

Answer 1

我设法用以下代码解决了这个问题

const response: Promise<CustomerDetail> =  client.getCustomerDetails('1');
const customerDetail: CustomerDetail = await response;
expect(response).toBeDefined();

NestJS 问题模拟 axios obersvable 响应

NestJS problem mocking axios obersvable response

unit-testing

axios

jestjs

mocking

nestjs