Angular tests failing with Failed to execute 'send' on 'XMLHttpRequest'

Question

I am trying to test my angular 4.1.0 component -

export class CellComponent implements OnInit {
  lines: Observable>;
  @Input() dep         


        

Answer 1

I also had this error, which truth be told is fairly non talkative.

It was related to the HTTP calls trough my services

I use myService.ts with 2 methods

get();
getAll();

I am mocking this service : mockMyService.ts

The error was here because my component was using getAll() method that I forgot to implement in the mockMyService, so I just added the method :

private mockObjects = [
{
  'id': '1',
  'champ1': 'TECH',
  'champ2': 2,
  'champ3': 'Data bidon'
},
{
  'id': '2',
  'champ1': 'TECH',
  'champ2': 2,
  'champ3': 'Data au pif'
},
{
  'id': '3',
  'champ1': 'FUNC',
  'champ2': 3,
  'champ3': 'Data quelconque'
},
 ];

getAll(): Observable {
  return Observable.of(this.mockObjects);
}

Error was gone :)