ngxs-data-testing.example.ts

import { TestBed } from '@angular/core/testing';

export interface ZooStateModel {
  feedAnimals: string[];
}

@StateRepository()
@State<ZooStateModel>({
  name: 'zoo',
  defaults: {
    feedAnimals: []
  }
})
@Injectable()
export class ZooState extends NgxsDataRepository<ZooStateModel> {

  @DataAction()
  public feedAnimals(@Payload('animalsToFeed') animalsToFeed: string[]): void {
    this.ctx.setState((state) => ({ feedAnimals: [...state.feedAnimals, ...animalsToFeed] }));
  }

}

describe('Zoo', () => {
  
  it('it toggles feed', ngxsTestingPlatform([ ZooState ], (store, zooState) => {
    zooState.feedAnimals([ 'leaves', 'bark' ]);
    expect(zooState.snapshot).toBe([ 'leaves', 'bark' ]);
  }));
  
});