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MockConnection
class
| npm Package | @angular/http | 
|---|---|
| Module | import { MockConnection } from '@angular/http/testing'; | 
     
| Source | http/testing/src/mock_backend.ts | 
Overview
class MockConnection implements Connection {
  constructor(req: Request)
  readyState: ReadyState
  request: Request
  response: ReplaySubject<Response>
  mockRespond(res: Response)
  mockDownload(res: Response)
  mockError(err?: Error)
}
  Description
Mock Connection to represent a Connection for tests.
Constructor
constructor(req: Request)
  Members
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.
mockRespond(res: Response)
  Sends a mock response to the connection. This response is the value that is emitted to the EventEmitter returned by Http.
Example
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'
  mockDownload(res: Response)
  Not yet implemented!
Sends the provided Response to the downloadObserver of the Request associated with this connection.
mockError(err?: Error)
  Emits the provided error object as an error to the Response EventEmitter returned from Http.
Example
var connection;
backend.connections.subscribe(c => connection = c);
http.request('data.json').subscribe(res => res, err => console.log(err)));
connection.mockError(new Error('error'));
  © 2010–2017 Google, Inc.
Licensed under the Creative Commons Attribution License 4.0.
 https://v4.angular.io/api/http/testing/MockConnection