所以这是我的问题。我正在尝试为我的旧应用程序运行测试套件。但是，我偶然发现了臭名昭著的 Karma 错误：Executed 0 of 0 ERROR.
当我将 Karma 的日志级别转为调试时，我意识到正在打印这些行：
DEBUG [web-server]: serving: /home/**/**/**/node_modules/karma/static/context.html
DEBUG [web-server]: serving (cached): /home/**/**/**/node_modules/jasmine-core/lib/jasmine-core/jasmine.js
DEBUG [web-server]: serving (cached): /home/**/**/**/node_modules/karma-jasmine/lib/boot.js
DEBUG [web-server]: serving (cached): /home/**/**/**/node_modules/karma-jasmine/lib/adapter.js
DEBUG [web-server]: serving (cached): /home/**/**/**/bower_components/jquery/dist/jquery.js
DEBUG [web-server]: serving (cached): /home/**/**/**/bower_components/angular/angular.js
DEBUG [web-server]: serving (cached): /home/**/**/**/bower_components/angular-i18n/angular-locale_es-ar.js
DEBUG [web-server]: serving (cached): /home/**/**/**/bower_components/angular-animate/angular-animate.js
DEBUG [web-server]: serving (cached): /home/**/**/**/bower_components/angular-resource/angular-resource.js
DEBUG [web-server]: serving (cached): /home/**/**/**/bower_components/angular-cookies/angular-cookies.js
DEBUG [web-server]: serving (cached): /home/**/**/**/bower_components/angular-sanitize/angular-sanitize.js
DEBUG [web-server]: serving (cached): /home/**/**/**/bower_components/angular-ui-utils/ui-utils.js
DEBUG [web-server]: serving (cached): /home/**/**/**/bower_components/angular-ui-select/dist/select.js
DEBUG [web-server]: serving (cached): …最近几天，我似乎在这件事上陷入困境。
我们正在开发Angular 2应用程序，我需要为用户创建一个向导以填写表单。
我已经成功地使数据流过了向导的每个步骤，并保存了它以便自由地来回移动。但是，提交表单后，我似乎无法重置它。
我应该补充一点，每个组件都在墙后。也许更好的解决方案是直接在AppModule上注入单例服务。但是我似乎无法使其正常工作。
到目前为止，这是我的代码：
步骤1
import { Component, OnInit } from '@angular/core';
import { FormBuilder, FormGroup, Validators } from '@angular/forms';
import { Router } from '@angular/router';
import { EventOption } from '../../../events/shared/event-option.model';
import { Store } from '@ngrx/store';
import { NewEventService } from '../shared/new-event.service';
import { Event } from '../../../events/shared/event.model';
import { FriendService } from '../../../friends/shared/friend.service';
@Component({
selector: 'app-upload-images',
templateUrl: './upload-images.component.html',
styleUrls: ['../../../events/new-event/new-event.component.css']
})
export class UploadImagesComponent implements OnInit {
form: FormGroup;
private event;
private images = []; …