在 Loopback 4 中创建一个模拟请求对象

Question

我有一个 Loopback 4 控制器，我想对它进行单元测试。如何模拟请求参数？这是我的控制器的构造函数：

  constructor(@inject(RestBindings.Http.REQUEST) private req: Request,
              @service(HttpService) private httpService: HttpService,
              @service(LocalRequestService) private localRequestService: LocalRequestService) {}

我尝试用createStubInstance(Request) 模拟它，但这给了我这个错误：

Argument of type 'StubbedInstanceWithSinonAccessor<Request>' is not assignable to parameter of type 'Request<ParamsDictionary, any, any, ParsedQs, Record<string, any>>'.
  Type 'StubbedInstanceWithSinonAccessor<Request>' is missing the following properties from type 'Request<ParamsDictionary, any, any, ParsedQs, Record<string, any>>': get, header, accepts, acceptsCharsets, and 68 more.ts(2345)

Answer 1

可以使用stubExpressContext。

const context = stubExpressContext();
const controller = new MyController(context.request);

可以将选项传递给 stubExpressContext。

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