Javascript angular2/jasmine注入模拟服务不呼叫间谍
试图使用jasmine对angular2应用程序进行单元测试,但当我尝试注入服务时,间谍不会接听注入的电话 测试套件:Javascript angular2/jasmine注入模拟服务不呼叫间谍,javascript,unit-testing,angular,jasmine,testbed,Javascript,Unit Testing,Angular,Jasmine,Testbed,试图使用jasmine对angular2应用程序进行单元测试,但当我尝试注入服务时,间谍不会接听注入的电话 测试套件: import { TestBed, inject, tick, fakeAsync, ComponentFixture } from '@angular/core/testing'; import { By } from '@angular/platform-browser'; import { RouterTestingModule } from '@angular/rout
import { TestBed, inject, tick, fakeAsync, ComponentFixture } from '@angular/core/testing';
import { By } from '@angular/platform-browser';
import { RouterTestingModule } from '@angular/router/testing';
import { RoomComponent } from './room.component';
import { Room } from './room';
import { RoomService } from './room.service';
import { MockRoomService } from '../mock/mock.room.service';
import { BaseRequestOptions, Http, ConnectionBackend, Response, ResponseOptions } from '@angular/http';
import { MockBackend } from '@angular/http/testing';
...
beforeEach(fakeAsync(() => {
TestBed.configureTestingModule({
declarations: [
RoomComponent
],
providers: [
{
provide: Http, useFactory: (backend: ConnectionBackend, defaultOptions: BaseRequestOptions) => {
return new Http(backend, defaultOptions);
},
deps: [MockBackend, BaseRequestOptions]
},
RoomService,
{provide: MockBackend, useClass: MockBackend},
{provide: BaseRequestOptions, useClass: BaseRequestOptions}
],
imports: [
RouterTestingModule
]
})
.overrideComponent(RoomComponent, {
set: {
providers: [{provide: RoomService, useClass: MockRoomService}]
}
})
...
it('should have rooms after getRooms', inject([RoomService], fakeAsync((mockRoomService: MockRoomService) => {
let spy = spyOn(mockRoomService, 'getRooms').and.callThrough();
fixture.detectChanges();
tick();
expect(spy).toHaveBeenCalled(); //Does not return true
expect(component.rooms).toBeDefined();
})));
测试间谍自身是否能够正常工作(使用模拟服务和直接调用),组件是否调用模拟服务而不是真实服务,并返回测试数据:
LOG: 'ngInitified'
PhantomJS 2.1.1 (Windows 7 0.0.0): Executed 6 of 21 (skipped 3) SUCCESS (0 secs / 1.156 secs)
LOG: 'method reached'
PhantomJS 2.1.1 (Windows 7 0.0.0): Executed 6 of 21 (skipped 3) SUCCESS (0 secs / 1.156 secs)
LOG: 'mock service reached'
PhantomJS 2.1.1 (Windows 7 0.0.0): Executed 6 of 21 (skipped 3) SUCCESS (0 secs / 1.156 secs)
LOG: [Object{_id: '12', gitrepo: 'repository', channel: 'slack channel'}, Object{_id: '42', gitrepo: 'newrepo', channel: 'dev'}]
PhantomJS 2.1.1 (Windows 7 0.0.0): Executed 6 of 21 (skipped 3) SUCCESS (0 secs / 1.156 secs)
PhantomJS 2.1.1 (Windows 7 0.0.0) Component: Room should have rooms after getRooms FAILED
Expected spy getRooms to have been called.
我试过直接提供服务。尝试将间谍放在RoomService对象而不是模拟对象上。两人都没有回过电话说那个间谍被叫了
模拟服务:
import { Injectable } from '@angular/core';
import { Http } from '@angular/http';
import { Room } from '../room/room';
@Injectable()
export class MockRoomService {
testData: Room[] = [{"_id":"12","gitrepo": "repository", "channel": "slack channel"}, {"_id":"42","gitrepo": "newrepo", "channel": "dev"}];
constructor(http: Http) { }
getRooms(): Promise<Room[]> {
console.log("mock service reached");
return new Promise((resolve, reject) => {
resolve(this.testData);
});
}
...
帮助?您得到了错误的
RoomService
提供商实例
it('should have rooms after getRooms', inject([RoomService], fakeAsync((mockRoomService: MockRoomService) => {
let componentMockRoomService = fixture.debugElement.injector.get(RoomService);
console.log(mockRoomService instanceof RoomService); // true
console.log(componentMockRoomService instanceof RoomService);// false
mockRoomService
是根提供程序的实例,而您需要测试与组件对应的类
这是你的测试
let componentMockRoomService = fixture.debugElement.injector.get(RoomService);
let spy = spyOn(componentMockRoomService, 'getRooms').and.callThrough();
it('should have rooms after getRooms', inject([RoomService], fakeAsync((mockRoomService: MockRoomService) => {
let componentMockRoomService = fixture.debugElement.injector.get(RoomService);
console.log(mockRoomService instanceof RoomService); // true
console.log(componentMockRoomService instanceof RoomService);// false
let componentMockRoomService = fixture.debugElement.injector.get(RoomService);
let spy = spyOn(componentMockRoomService, 'getRooms').and.callThrough();