/********************************************************************************
 * Copyright (c) 2015-2018 Contributors to the Eclipse Foundation
 *
 * See the NOTICE file(s) distributed with this work for additional
 * information regarding copyright ownership.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0 which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 ********************************************************************************/


import { async, TestBed, inject } from '@angular/core/testing';
import { BaseRequestOptions, Http, HttpModule } from '@angular/http';
import { MockBackend } from '@angular/http/testing';

import { ContextService, ContextAttribute, MergedContextAttribute } from './context.service';
import { PropertyService } from '../core/property.service';
import { HttpErrorHandler } from '../core/http-error-handler';

describe('ContextService', () => {
  beforeEach(() => {
    TestBed.configureTestingModule({
      imports: [HttpModule],
      providers: [
        MockBackend,
        BaseRequestOptions,
        HttpErrorHandler,
        {
          provide: Http,
          useFactory: (mockBackend, options) => {
            return new Http(mockBackend, options);
          },
          deps: [MockBackend, BaseRequestOptions]
        },
        PropertyService,
        ContextService
      ]
    });
  });

  describe('mergeAttributes()', () => {
    it('should merge value of one attribute', async(inject([ContextService], (contextService) => {
      let attribute1: ContextAttribute = {
        'name' : 'size',
        'value' : '95R16',
        'unit' : '',
        'dataType' : 'STRING'
      }
      let attributes = [ attribute1 ];
      let contextIndex = 2;
      let resultAttributes: MergedContextAttribute[] = [];

      expect(contextService.mergeAttributes(attributes, contextIndex, resultAttributes)).toEqual(
        [{
          'name' : 'size',
          'value' : [undefined, undefined, '95R16'],
          'unit' : '',
          'dataType' : 'STRING'
        }]
      );
    })))

    it('should merge values of multiple attributes', async(inject([ContextService], (contextService) => {
      let attribute1: ContextAttribute = {
        'name' : 'size',
        'value' : '95R16',
        'unit' : '',
        'dataType' : 'STRING'
      }
      let attribute2: ContextAttribute = {
        'name' : 'side',
        'value' : 'Left',
        'unit' : '',
        'dataType' : 'STRING'
      }

      let attributes = [ attribute1, attribute2 ];
      let contextIndex = 0;
      let resultAttributes: MergedContextAttribute[] = [];

      expect(contextService.mergeAttributes(attributes, contextIndex, resultAttributes)).toEqual(
        [{
          'name' : 'size',
          'value' : ['95R16'],
          'unit' : '',
          'dataType' : 'STRING'
        }, {
          'name' : 'side',
          'value' : ['Left'],
          'unit' : '',
          'dataType' : 'STRING'
        }]
      );
    })))
  });

  describe('mergeContextRoots()', () => {
    it('should merge attributes values of all context components', async(inject([ContextService], (contextService) => {
      let data = {
        'ordered' : {
          'UNITUNDERTEST' : [{
              'name' : 'FL_tyre',
              'id' : '38',
              'type' : 'ContextComponent',
              'sourceType' : 'tyre',
              'sourceName' : 'MDM',
              'attributes' : [{
                  'name' : 'size',
                  'value' : '95R16',
                  'unit' : '',
                  'dataType' : 'STRING'
                }
              ]
            }
          ]
        },
        'measured' : {
          'UNITUNDERTEST' : [{
              'name' : 'FL_tyre',
              'id' : '39',
              'type' : 'ContextComponent',
              'sourceType' : 'tyre',
              'sourceName' : 'MDM',
              'attributes' : [{
                  'name' : 'size',
                  'value' : '95R17',
                  'unit' : '',
                  'dataType' : 'STRING'
                }
              ]
            }, {
              'name' : 'engine',
              'id' : '12',
              'type' : 'ContextComponent',
              'sourceType' : 'engine',
              'sourceName' : 'MDM',
              'attributes' : [{
                  'name' : 'cylinders',
                  'value' : '2',
                  'unit' : '',
                  'dataType' : 'STRING'
                }
              ]
            }
          ]
        }
      };

      let mergedData = contextService.mergeContextRoots([data.ordered, data.measured]);

      expect(mergedData).toEqual({
        'UNITUNDERTEST': [{
          'name' : 'FL_tyre',
          'id' : '38',
          'type' : 'ContextComponent',
          'sourceType' : 'tyre',
          'sourceName' : 'MDM',
          'attributes' : [{
            'name' : 'size',
            'value' : ['95R16', '95R17'],
            'unit' : '',
            'dataType' : 'STRING'
          }]
        }, {
          'name' : 'engine',
          'id' : '12',
          'type' : 'ContextComponent',
          'sourceType' : 'engine',
          'sourceName' : 'MDM',
          'attributes' : [{
            'name' : 'cylinders',
            'value' : [undefined, '2'],
            'unit' : '',
            'dataType' : 'STRING'
          }]
        }]
      });
    })));
  });
});