Angular 2 Тестирование модуля JWT

Мои вызовы API аутентифицируются с помощью JWT. Я пытаюсь написать код для метода службы. Все запросы имеют этот перехватчик:

public interceptBefore(request: InterceptedRequest): InterceptedRequest {
        // Do whatever with request: get info or edit it
        this.slimLoadingBarService.start();
        let currentUser = JSON.parse(localStorage.getItem('currentUser'));
        if (currentUser && currentUser.data.token) {
            request.options.headers.append('Authorization', 'Bearer ' + currentUser.data.token);
        }
        return request;
    }

Сервисный метод, который я хочу проверить:

getAll(page: number, pageSize: number, company: string): Observable<any> {
        return this.http.get(`${this.conf.apiUrl}/jobs`)
            .map((response: Response) => response.json());
    }

Запустил для него код:

import { MockBackend, MockConnection } from '@angular/http/testing';
import { Http, BaseRequestOptions, Response, ResponseOptions, RequestMethod } from '@angular/http';
import { JobListService } from './job-list.service';
import { inject, TestBed } from '@angular/core/testing/test_bed';
import { JOBLISTMOCK } from '../mocks/job-list.mock';

fdescribe('Service: JobListService', () => {
    beforeEach(() => {
        TestBed.configureTestingModule({
            providers: [
                JobListService,
                MockBackend,
                BaseRequestOptions,
                {
                    provide: Http,
                    useFactory: (backend: MockBackend, defaultOptions: BaseRequestOptions) => {
                        return new Http(backend, defaultOptions);
                    },
                    deps: [MockBackend, BaseRequestOptions]
                },
            ]
        });
    });

    it('should create a service', inject([JobListService], (service: JobListService) => {
        expect(service).toBeTruthy();
    }));

    describe('getAll', () => {
        it('should return jobs', inject([JobListService, MockBackend], (service: JobListService, backend: MockBackend) => {
            let response = new ResponseOptions({
                body: JSON.stringify(JOBLISTMOCK)
            });

            const baseResponse = new Response(response);

            backend.connections.subscribe(
                (c: MockConnection) => c.mockRespond(baseResponse)
            );

            return service.getAll(1, 10, '18').subscribe(data => {
                expect(data).toEqual(JOBLISTMOCK);
            });
        }));
    });
});

Не знаю, как протестировать его против перехватчика.

PS: Поскольку тесты теперь, получив ошибку:

1) should create a service
     JobListService
     TypeError: null is not an object (evaluating 'this.platform.injector') in src/test.ts (line 83858)
[email protected]:///~/@angular/core/testing/test_bed.js:254:0 <- src/test.ts:83858:44

2) should return jobs
     JobListService getAll
     TypeError: null is not an object (evaluating 'this.platform.injector') in src/test.ts (line 83858)
[email protected]:///~/@angular/core/testing/test_bed.js:254:0 <- src/test.ts:83858:44