在Angular Testing中没有$ injector的提供者

问题描述

我一直在尝试在我们的Hybrid AngularJS/NG6 App中设置测试，但是这很难做到.我一直在不断出错.最新的是以下内容:

I've been trying to setup testing in our Hybrid AngularJS/NG6 App but wow is this difficult to do. I keep getting constant errors. The latest is the following:

StaticInjectorError(平台:核心)[$ injector]:

StaticInjectorError(Platform: core)[$injector]:

NullInjectorError:没有$ injector提供程序！

NullInjectorError: No provider for $injector!

我有以下component:

import { Component, OnInit, Input, Inject } from '@angular/core';
import { DashboardService } from '../../services/dashboard/dashboard.service';

@Component({
    templateUrl: './views/components/dashboard/dashboard.component.html'
})
export class DashboardComponent implements OnInit {
    @Input()
    Session;
    Util;
    constructor(
        private _dashboardService: DashboardService,
        @Inject('Session') Session: any,
        @Inject('Util') Util: any
    ) {
        this.Session = Session;
        this.Util = Util;
    }

    ngOnInit() {
        this._dashboardService
            .getPrograms(this.Session.user.organization)
            .subscribe(
                data => {
                    console.log(data);
                },
                error => {
                    console.log(error);
                }
            );
    }
}

那很好.我可以从我们的API中提取数据.另一方面，我有这个spec文件:

That works perfectly fine. I can pull in data from our API. On the flip side I have this spec file:

import { async, ComponentFixture, TestBed } from '@angular/core/testing';
import { FormsModule, ReactiveFormsModule } from '@angular/forms';
import { CommonModule } from '@angular/common';

import { DashboardComponent } from './dashboard.component';
import { DebugElement } from '@angular/core';

import { DashboardService } from '../../services/dashboard/dashboard.service';
import { ApiService } from '../../services/api.service';

import { HttpClientModule } from '@angular/common/http';

describe('The Dashboard', () => {
    let component: DashboardComponent;
    let fixture: ComponentFixture<DashboardComponent>;
    let de: DebugElement;

    beforeEach(async(() => {
        TestBed.configureTestingModule({
            imports: [
                CommonModule,
                FormsModule,
                ReactiveFormsModule,
                HttpClientModule
            ],
            declarations: [DashboardComponent],
            providers: [
                {
                    provide: 'Util',
                    useFactory: ($injector: any) => $injector.get('Util'),
                    deps: ['$injector']
                },
                {
                    provide: 'Session',
                    useFactory: ($injector: any) => $injector.get('Session'),
                    deps: ['$injector']
                },
                DashboardService,
                ApiService
            ]
        })
            .overrideComponent(DashboardComponent, {
                set: {
                    templateUrl:
                        '/dist/views/components/dashboard/dashboard.component.html'
                }
            })
            .compileComponents();
    }));

    beforeEach(() => {
        fixture = TestBed.createComponent(DashboardComponent);
        component = fixture.componentInstance;
        de = fixture.debugElement;
        fixture.detectChanges();
    });

    it('should be created', () => {
        expect(component).toBeTruthy();
    });
});

运行此spec文件时，出现上面列出的错误.我不知道该错误试图告诉我什么，因为它非常模糊.

When I run this spec file I get the error listed above. I have no idea what the error is trying to tell me as it is very vague.

如何在spec文件中正确提供$Injector模块?

How do I provide the $Injector module correctly into the spec file?

推荐答案

我也尝试在混合应用程序中测试对AngularJS的依赖关系的Angular零件，但没有成功.要在混合环境中测试具有Angular依赖关系的AngularJS零件或具有AngularJS依赖关系的Angular零件是非常困难的.

我在GitHub上的帖子中找到了两种可能的解决方案
-完全模拟其他框架中的部分.
-创建包含来自其他框架的所有依赖项的微型应用程序.

I also tried to test Angular parts within my hybrid application with dependencies to AngularJS, but I did not succeed in it. To test either an AngularJS part with Angular dependencies or an Angular part with AngularJS dependencies within a hybrid is very difficult.

I found two possible solutions from this post on GitHub
- Completely mock the parts from the other framework.
- Create mini-apps that contain all dependencies from the other framework.

这篇关于在Angular Testing中没有$ injector的提供者的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！