Ionic 4: Creating mock storage

Question

I am trying to use Testbed in a new Angular 7 / Ionic 4 app but cannot run any tests because my components depend on an Ionic native plugin, storage.

app.com

Answer 1

First, import Storage:

import { Storage } from '@ionic/storage';

Create a const for mock:

 const storageIonicMock: any = {
     get: () => new Promise((resolve, reject) => resolve('As2342fAfgsdr')),
     set: () => ...
    };

Configure your TesBed

TestBed.configureTestingModule({
      imports: [],
      providers: [
        {
          provide: Storage,
          useValue: storageIonicMock
        }
      ]
    });