API 参考手册
API > @angular/http > @angular/http/testing

MockConnection

Mock Connection to represent a Connectionfor tests.

已弃用: see https://angular.io/guide/http

      
      class MockConnection implements Connection {
  constructor(req: Request)
  readyState: ReadyState
  request: Request
  response: ReplaySubject<Response>
  mockRespond(res: Response)
  mockDownload(res: Response)
  mockError(err?: Error)
}

构造函数

constructor(req: Request)
      
      constructor(req: Request)
参数
req Request

属性

属性说明
readyState: ReadyState

Describes the state of the connection, based on XMLHttpRequest.readyState, but with additional states. For example, state 5 indicates an aborted connection.

request: Request Request

instance used to create the connection.

response: ReplaySubject<Response> EventEmitter

of Response. Can be subscribed to in order to be notified when a response is available.

方法

mockRespond()

Sends a mock response to the connection. This response is the value that is emitted to the EventEmitterreturned by Http.

mockRespond(res: Response)
      
      mockRespond(res: Response)
参数
res Response

mockDownload()

Not yet implemented!

mockDownload(res: Response)
      
      mockDownload(res: Response)
参数
res Response

Sends the provided Responseto the downloadObserver of the Request associated with this connection.

mockError()

Emits the provided error object as an error to the ResponseEventEmitterreturned from Http.

mockError(err?: Error)
      
      mockError(err?: Error)
参数
err Error

可选. 默认值是 undefined.

使用说明

Example of mockRespond()

var connection; backend.connections.subscribe(c => connection = c); http.request('data.json').subscribe(res => console.log(res.text())); connection.mockRespond(new Response(new ResponseOptions({ body: 'fake response' }))); //logs 'fake response'
      
      var connection;
backend.connections.subscribe(c => connection = c);
http.request('data.json').subscribe(res => console.log(res.text()));
connection.mockRespond(new Response(new ResponseOptions({ body: 'fake response' }))); //logs
'fake response'

Example of mockError()

var connection; backend.connections.subscribe(c => connection = c); http.request('data.json').subscribe(res => res, err => console.log(err))); connection.mockError(new Error('error'));
      
      var connection;
backend.connections.subscribe(c => connection = c);
http.request('data.json').subscribe(res => res, err => console.log(err)));
connection.mockError(new Error('error'));