Error: createConnection requires an instance of Request, got [object Object] - Angular2, SytemJs

Question

I'm hitting an issue when trying to MockBackends with Angular2, SystemJs. I'm wanting to test various states of my service methods, but I keep getting the error (Error: createConnection requires an instance of Request, got [object Object]). I can't see any 404s' from Systemjs either. I tried a unit test straight out of the Angular2 docs as that does not work either:

What else should I check?

-- my test

it('should get a response', () => {
    let connection; //this will be set when a new connection is emitted from the backend.
    let text; //this will be set from mock response
    let injector = ReflectiveInjector.resolveAndCreate([
        MockBackend,
        BaseRequestOptions,
        {provide: Http, useFactory: (backend, options) => {
            return new Http(backend, options);
        }, deps: [MockBackend, BaseRequestOptions]}]);
    let backend = injector.get(MockBackend);
    let http = injector.get(Http);
    backend.connections.subscribe(c => connection = c);
    http.request('https://jsonplaceholder.typicode.com/users').subscribe(res => {
        text = res.text();
    });

    console.log('text: ', text);

    connection.mockRespond(new Response({body: [{'id': 1}]}));

    expect(text).toBeDefined();

});

-- my service call

 return this._http.get(this.url)
            .map(res => res.json());

Answer 1

it's

import {ResponseOptions} from '@angular/http'; (...) connection.mockRespond(new Response(new ResponseOptions({body: [{'id': 1}]})));

the constructor of Response expects it's argument wraped in ResponseOptions ;-)

P.S.: updated the buggy sample in master branch a few days ago but doc still uses an old tagged one. The new Sample can already be found on github: https://github.com/angular/angular/blob/master/modules/@angular/http/testing/mock_backend.ts