ts-mokito-sample.ts

ts-mokito-sample.ts

import { mock, instance, when, verify, anyString, anyOfClass } from 'ts-mockito';
import { RequestOptions } from '@angular/http';

import { HttpService } from '../common/http/http.service';
import { LoginService } from './login.service';

import { RouterTestingModule } from '@angular/router/testing';

import { Observable } from 'rxjs';

describe('login.service', () => {

    let httpService : HttpService;
    let loginService : LoginService;

    beforeEach(() => {
        console.log('beforeEach');
        httpService = mock(HttpService);
        loginService = new LoginService(instance(httpService));
    });

    it('executes a POST request to the backend on user login', () => {

        loginService.login('username', 'password');

        verify(httpService.executeRequest(anyString(), anyOfClass(RequestOptions))).called();
    });
});

Una diferencia respecto a la versión de Java es que hay usar "instance" a la hora de proporcionar el mock al objeto que se está testeando.