src/app/common/guards/exists-guard.spec.ts

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
import {Router} from '@angular/router';
import {ExistsGuardService} from './exists-guard';
import {fakeAsync, inject, TestBed, tick} from '@angular/core/testing';
import {Observable} from 'rxjs/Observable';

describe('Test Exists Guard Service', () => {

  beforeEach(() => {
    TestBed.configureTestingModule({
      providers: [
        ExistsGuardService,
        {
          provide: Router,
          useValue: jasmine.createSpyObj('router', ['navigate'])
        },
        {
          provide: 'cacheExpiry',
          useValue: 5000
        }
      ]
    });
  });

  it('should return false when not within expiry', fakeAsync(() => {
    inject([ExistsGuardService], (existsGuardService: ExistsGuardService) => {

      let result = true;

      existsGuardService.isWithinExpiry(Observable.of(Date.now() - 6000)).subscribe(isExpired => result = isExpired);

      tick();

      expect(result).toBeFalsy();
    })();
  }));

  it('should return true when within expiry', fakeAsync(() => {
    inject([ExistsGuardService], (existsGuardService: ExistsGuardService) => {

      let result = false;

      existsGuardService.isWithinExpiry(Observable.of(Date.now() - 1000)).subscribe(isExpired => result = isExpired);

      tick();

      expect(result).toBeTruthy();
    })();
  }));

  it('should route to /404 on exception and return false', fakeAsync(() => {
    inject([ExistsGuardService, Router], (existsGuardService: ExistsGuardService, router: Router) => {

      let result = true;

      existsGuardService.routeTo404OnError(Observable.throw({})).subscribe(canActivate => result = canActivate);

      tick();

      expect(router.navigate).toHaveBeenCalledWith(['/404']);

      expect(result).toBeFalsy();
    })();
  }));

});