小编Ros*_*shi的帖子

我想要进行单元测试并获得所有代码的覆盖率，但我无法获得订阅内存在的代码的覆盖率我能够监视服务和功能，但在订阅内我无法进行单元测试并获得代码覆盖率。以下是 Angular 7 代码。

LoadListData(type) {
    this.itemListEnvName = [];
    if (type === 'EnvirnmentList') {
      this.environmentBookingService.getBookedEnv()
        .subscribe(
          (environmentBookingsData: EbEnvironmentBooking[]) => {
            if (environmentBookingsData.length > 0) {
              this.itemListEnvNameList = environmentBookingsData;
              this.itemListEnvName = [];
              this.itemListEnvNameList.forEach(element => {
                const obj = {};
                obj['id'] = element['environmentId'];
                obj['itemName'] = element['environmentName'];
                this.itemListEnvName.push(obj);
                this.generateCheckDisable = false;
              });
            } else {
              this.generateCheckDisable = true;
            }
          },
          (error) => {
            this.showMessage('No Response From Delivery DB API');
          }
        );
    } else {

      this.showMessage('No Response From Delivery DB API');
    }


  }

单元测试用例内的代码就像 …

我收到错误，因为在单元测试时无法读取 angular 7 中激活路由的未定义属性“订阅”。我已经尝试了多种方式，请帮忙。

Observer.of 对我不起作用，因为我有 rx.js 版本 6.3.3

这是我的组件文件 ChildComponent.ts

import { Component, Input } from '@angular/core';
import { FormGroup } from '@angular/forms';
import { ActivatedRoute, Router } from '@angular/router';

@Component({
    selector: 'app-child',
    template: `
        <h1>Enter your name</h1>
        <form
              [formGroup]="nameForm"
              (ngSubmit)="submitForm(nameForm)"
        >
            <input
                   type="text"
                   formControlName="firstName"
                   placeholder="first"
            >
            <input
                   type="text"
                   formControlName="lastName"
                   placeholder="last"
            >
            <button type="submit">launch to space</button>
        </form>
    `,
    styleUrls: ['./child.component.css']
})
export class ChildComponent {
    @Input() nameForm: FormGroup;
    private abc: number;
    constructor(
        public route: ActivatedRoute,
       ) {

        this.route.queryParams.subscribe(params => …