Simple tests for injectables are failing with a TypeError

[wescopeland]

I'm submitting a...

[x] Support request

Current behavior

Getting an error Cannot read property 'getComponentFromError' of null when writing basic tests for injectables (HTTP or otherwise).

Expected behavior

No error should be displayed and the tests should pass.

Minimal reproduction of the problem with instructions

import { SpectatorService, createServiceFactory } from '@ngneat/spectator';
import { Injectable } from '@angular/core';

@Injectable({ providedIn: 'root' })
export class UserService {
  constructor() {}
}

describe('Service: UserService', () => {
  let spectator: SpectatorService<UserService>;
  const createService = createServiceFactory(UserService);

  // Error is thrown here. TypeError: Cannot read property 'getComponentFromError' of null
  beforeEach(() => (spectator = createService()));

  it('exists', () => {
    expect(spectator.service).toBeDefined();
  });
});

Environment

Angular version: 8.2.11 (latest)
Spectator version: 4.4.2
 
For Tooling issues:
- Node version: 12.6.0
- Platform: macOS 10.15

Others:
This is happening in an Nx 8.6 monorepo.

[dirkluijk]

It seems not to be related to Spectator (it works here).

I think it has something to do with your test setup or with Nx workspaces. Are you using Jest? Maybe check this issue.

[wescopeland]

Yes, we are using Jest :-)
Thank you for pointing me in the right direction!