注入的服务无效

时间:2018-05-27 16:45:56

标签: angular unit-testing jasmine angular6 angular-test

我正在尝试使用模拟服务测试Angular 6组件。

我对下面代码的意图是使用嵌套的describe语句来允许不同版本的模拟服务返回不同的结果

真实服务执行一些HTTP调用,而我的mock返回带有数据的Observable。

当我执行测试时,我看到Jasmine正在尝试实际执行HTTP调用而忽略了我的模拟

// Core imports
import { async, ComponentFixture, TestBed, inject, fakeAsync } from '@angular/core/testing';
import { FormsModule } from '@angular/forms';
import { DebugElement, CUSTOM_ELEMENTS_SCHEMA } from '@angular/core';
import { ActivatedRoute, Params } from "@angular/router";
import { Observable } from "rxjs/Observable"
import 'rxjs/add/observable/of';
import { HttpClientModule } from "@angular/common/http";

// Vendor imports
import { ToastrModule, ToastrService } from 'ngx-toastr';
import { NgbModule } from "@ng-bootstrap/ng-bootstrap";

// Project imports
import { FormComponent } from './form.component';
import { FormService } from "../../services/form.service";
import { DatastoreService } from "../../services/datastore.service";

describe('FormComponent', () => {

   let component: FormComponent;
   let fixture: ComponentFixture<FormComponent>;
   let de: DebugElement;
   let el;

   beforeEach(async(() => {
      console.info('First setup of module');
      return TestBed.configureTestingModule({
         imports: [HttpClientModule, FormsModule, ToastrModule.forRoot(), NgbModule.forRoot()],
         providers: [
            FormService,
            ToastrService,
            DatastoreService,
            {
               provide: ActivatedRoute,
                  useValue: {
                     params: {
                        subscribe: (fn: (value: Params) => void) => fn({
                           tab: 0,
                        }),
                     },
                     snapshot: {
                        url: [{path: 'worker'}],
                        queryParams: {table: 'portal', sysId: undefined}
                     },
                  },
               },
            ],
         declarations: [ FormComponent ],
         schemas: [ CUSTOM_ELEMENTS_SCHEMA ]
      });
   }));

   beforeEach(() => {
      console.info('establishing components');
      fixture = TestBed.createComponent(FormComponent);
      component = fixture.componentInstance;
      fixture.detectChanges();
      de = fixture.debugElement;
      el = de.nativeElement;
   });

   describe('with a form layout containing an invalid element', () => {

      let FormServiceMock = class FormServiceMock {
         constructor() { console.info('instantiated'); }

         public getForm(table) {
            console.log('getForm called');
            return Observable.of({
               "table": "portalx",
               "schema": {
                  "name": {"title": "name", "element_type": "string"},
                  "suffix": {"title": "suffix", "element_type": "string"},
                  "active": {"title": "active", "element_type": "boolean"}
               }, "layout": ["name", "suffix", "notexists", "active"]
            });
         }
      };

      beforeEach( () => {
         console.info('Second re-setup of module');
         TestBed.resetTestingModule();
         return TestBed.configureTestingModule({
            providers: [{ provide: FormService, useClass: FormServiceMock }]
         }).compileComponents();
      });

      fit('ngOnInit sets values correctly', inject([FormService], (service: FormService) => {

         console.info('hello world');
         component.ngOnInit();
         expect(component.portal).toEqual('worker');

      }));

   });

});

运行茉莉花测试给了我

  

Chrome 66.0.3359(Mac OS X 10.12.6)错误           Chrome 66.0.3359(Mac OS X 10.12.6)ERROR Disconnectedundefined           Chrome 66.0.3359(Mac OS X 10.12.6):执行了37(跳过36)成功(1.779秒/ 1.655秒)       sNm6eZUIrnZxAOwqAAAI,ID为92987428           Chrome 66.0.3359(Mac OS X 10.12.6):执行0 37 of 37 SUCCESS(0秒/ 0秒)           信息:&#39;首先设置模块&#39;           Chrome 66.0.3359(Mac OS X 10.12.6):执行0 37 of 37 SUCCESS(0秒/ 0秒)           信息:&#39;首先设置模块&#39;           27 05 2018 17:36:00.293:WARN [web-server]:404:/ api / services / ui / form / portal           27 05 2018 17:36:00.551:WARN [web-server]:404:/ api / services / ui / form / portal           信息:&#39;建立组件&#39;           Chrome 66.0.3359(Mac OS X 10.12.6):执行0 37 of 37 SUCCESS(0秒/ 0秒)           信息:&#39;建立组件&#39;           信息:&#39;第二次重新设置模块&#39;           Chrome 66.0.3359(Mac OS X 10.12.6):执行0 37 of 37 SUCCESS(0秒/ 0秒)           信息:&#39;第二次重新设置模块&#39;           信息:&#39;实例化&#39;           Chrome 66.0.3359(Mac OS X 10.12.6):执行0 37 of 37 SUCCESS(0秒/ 0秒)           信息:&#39;实例化&#39;           信息:&#39;你好世界&#39;           Chrome 66.0.3359(Mac OS X 10.12.6):执行0 37 of 37 SUCCESS(0秒/ 0秒)           信息:&#39;你好世界&#39;           日志:HttpErrorResponse {headers:HttpHeaders {normalizedNames:Map {},lazyUpdate:null,lazyInit:function(){...}},状态:404,   statusText:&#39; Not Found&#39;,url:&#39; http://localhost:9876/api/seLOG:   HttpErrorResponse {headers:HttpHeaders {normalizedNames:Map {},   lazyUpdate:null,lazyInit:function(){...}},状态:404,   statusText:&#39; Not Found&#39;,url:   &#39; http://localhost:9876/api/services/ui/form/portal&#39;,ok:false,name:   &#39; HttpErrorResponse&#39;,消息:&#39; Http失败响应   http://localhost:9876/api/services/ui/form/portal:404 Not Found&#39;,   错误:&#39;未找到&#39;}           Chrome 66.0.3359(Mac OS X 10.12.6):执行0 37 of 37 SUCCESS(0秒/ 0秒)           日志:HttpErrorResponse {headers:HttpHeaders {normalizedNames:Map {},lazyUpdate:null,lazyInit:function(){...}},状态:404,   statusText:&#39; Not Found&#39;,url:   &#39; http://localhost:9876/api/services/ui/form/portal&#39;,ok:false,name:   &#39; HttpErrorResponse&#39;,消息:&#39; Http失败响应   http://localhost:9876/api/services/ui/form/portal:404 Not Found&#39;,   错误:&#39;未找到&#39;}           日志:HttpErrorResponse {headers:HttpHeaders {normalizedNames:Map {},lazyUpdate:null,lazyInit:function(){...}},状态:404,   statusText:&#39; Not Found&#39;,url:&#39; http://localhost:9876/api/seLOG:   HttpErrorResponse {headers:HttpHeaders {normalizedNames:Map {},   lazyUpdate:null,lazyInit:function(){...}},状态:404,   statusText:&#39; Not Found&#39;,url:   &#39; http://localhost:9876/api/services/ui/form/portal&#39;,ok:false,name:   &#39; HttpErrorResponse&#39;,消息:&#39; Http失败响应   http://localhost:9876/api/services/ui/form/portal:404 Not Found&#39;,   错误:&#39;未找到&#39;}           Chrome 66.0.3359(Mac OS X 10.12.6):执行0 37 of 37 SUCCESS(0秒/ 0秒)           日志:HttpErrorResponse {headers:HttpHeaders {normalizedNames:Map {},lazyUpdate:null,lazyInit:function(){...}},状态:404,   statusText:&#39; Not Found&#39;,url:&#39; http://localhost:9876/api/seChrome   66.0.3359(Mac OS X 10.12.6):执行第37条(跳过36条)成功(1.638秒/1.52秒)

在该日志输出中,我看到Instantiated在我的模拟构造函数中,但我没有看到调用我的getForm方法,而是从服务调用真实的方法。

  

Chrome 66.0.3359(Mac OS X 10.12.6)错误Disconnectedundefined 27 05   2018 17:35:58.128:

INFO [Chrome 66.0.3359 (Mac OS X 10.12.6)]:    Connected on socket 

对此有何帮助?

0 个答案:

没有答案