/**
 * 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 {fakeAsync, TestBed, tick} from '@angular/core/testing';
import {EffectsRunner, EffectsTestingModule} from '@ngrx/effects/testing';
import {EmployeeSearchApiEffects} from './service.effects';
import {Observable} from 'rxjs/Observable';
import {OfficeService} from '../../../services/office/office.service';
import {SearchAction, SearchCompleteAction} from '../employee.actions';
import {EmployeePage} from '../../../services/office/domain/employee-page.model';
import {emptySearchResult} from '../../../common/store/search.reducer';

describe('Employee Search Api Effects', () => {
  beforeEach(() => {

    TestBed.configureTestingModule({
      imports: [
        EffectsTestingModule
      ],
      providers: [
        EmployeeSearchApiEffects,
        {
          provide: OfficeService,
          useValue: jasmine.createSpyObj('officeService', ['listEmployees'])
        }
      ]
    });

  });

  describe('search$', () => {

    function setup(params?: {searchEmployeesReturnValue: any}) {
      const officeService = TestBed.get(OfficeService);
      if (params) {
        officeService.listEmployees.and.returnValue(params.searchEmployeesReturnValue);
      }

      return {
        runner: TestBed.get(EffectsRunner),
        employeeEffects: TestBed.get(EmployeeSearchApiEffects)
      };
    }

    it('should return a new SearchCompleteAction with EmployeePage', fakeAsync(() => {
      const employeePage: EmployeePage = {
        employees: [
          { identifier: '', givenName: '', surname: '', contactDetails: [] }
        ],
        totalElements: 1,
        totalPages: 1
      };

      const { runner, employeeEffects } = setup({ searchEmployeesReturnValue: Observable.of(employeePage) });

      const expectedResult = new SearchCompleteAction({
        elements: employeePage.employees,
        totalElements: employeePage.totalElements,
        totalPages: employeePage.totalPages
      });

      runner.queue(new SearchAction({}));

      let result = null;
      employeeEffects.search$.subscribe(_result => result = _result);

      tick(299);
      expect(result).toBe(null);
      tick(300);
      expect(result).toEqual(expectedResult);
    }));

    it('should return a new SearchCompleteAction, with an empty array, if office service throws', fakeAsync(() => {
      const {runner, employeeEffects} = setup({searchEmployeesReturnValue: Observable.throw(new Error())});

      const expectedResult = new SearchCompleteAction(emptySearchResult());

      runner.queue(new SearchAction({}));

      let result = null;
      employeeEffects.search$.subscribe(_result => result = _result);

      tick(299);
      expect(result).toBe(null);
      tick(300);
      expect(result).toEqual(expectedResult);
    }));
  });
});