Question

我无法使用MockBackend检查我的代码在单元测试中发送的标头。

我正在测试中执行以下操作：

injectAsync([Http, XHRBackend], (http: Http, backend: MockBackend) => {
  return new Promise((pass, fail) => {
    var request: Request;

    backend.connections.subscribe((c: MockConnection) => {
      request = c.request;
      c.mockRespond(new Response(new ResponseOptions()));
    })

    let req_headers = new Headers({'Authorization': 'Bearer foo'});
    http.get('/', new ResponseOptions({headers: req_headers})).subscribe(
      () => {
        // I try to get the request headers here
        console.log(request.headers);
        pass();
      },
      fail
    )
  })
})

然而，当我尝试回读标题时，我得到一个空标题集。 log语句的结果为我提供了Headers{_headersMap: Map{}}。

我错过了什么？

Answer 1

事实上，他们在那里但是header属性是Map所以你需要这样做：

// All headers
for (var key of connection.request.headers.keys()) {
  console.log('- key = ' + key);
}

// Authorization header
var auth = connection.request.headers.get('Authorization');
console.log('auth = '+auth);

Answer 2

请看这个插件（文件src / myservice.spec.ts第52-71行）;

  it('should do something',injectAsync([Http, XHRBackend], (http: Http, backend: MockBackend) => {
return new Promise((pass, fail) => {

  backend.connections.subscribe((c: MockConnection) => {
    console.log(c.request.headers);// headers will be defined here
    //if you want this to pass, you have to do a little bit more with the response
    c.mockRespond(new Response(new ResponseOptions()));
  })
  //headers will need to be imported from 'angular2/http'
  let req_headers = new Headers({'Authorization': 'Bearer foo'});
  //response options is not what you need to pass into http.get. you want to pass RequestOptions
  http.get('/', {headers: req_headers}).subscribe(
    () => {
      pass();
    },
    //fail needs to be called to fail.
    fail();
  )
})

}））;

如何从带有angular2的MockBackend获取标头

2 个答案: