Correct Search Service

mock.search.service.ts

import {provide} from 'angular2/core';
import {SpyObject} from 'angular2/testing_internal';

import {SearchService} from '../search.service';

export class MockSearchService extends SpyObject {
  getAllSpy;
  getByIdSpy;
  searchSpy;
  saveSpy;
  fakeResponse;

  constructor() {
    super(SearchService);

    this.fakeResponse = null;
    this.getAllSpy = this.spy('getAll').andReturn(this);
    this.getByIdSpy = this.spy('get').andReturn(this);
    this.searchSpy = this.spy('search').andReturn(this);
    this.saveSpy = this.spy('save').andReturn(this);
  }

  subscribe(callback) {
    callback(this.fakeResponse);
  }

  setResponse(json: any): void {
    this.fakeResponse = json;
  }

  getProviders(): Array<any> {
    return [provide(SearchService, {useValue: this})];
  }
}