Jest Support

By default, Spectator uses Jasmine for creating spies. If you are using Jest as test framework instead, you can let Spectator create Jest-compatible spies.

Just import one of the following functions from @ngneat/spectator/jest(instead of @ngneat/spectator), and it will use Jest instead of Jasmine. createComponentFactory(), createHostFactory(), createServiceFactory(), createHttpFactory(), mockProvider().

import { createServiceFactory, SpectatorService } from '@ngneat/spectator/jest';

import { AuthService } from './auth.service';

import { DateService } from './date.service';

describe('AuthService', () => {

let spectator: SpectatorService<AuthService>;

const createService = createServiceFactory({

service: AuthService,

mocks: [DateService]

});

beforeEach(() => spectator = createService());

it('should not be logged in', () => {

const dateService = spectator.inject<DateService>(DateService);

dateService.isExpired.mockReturnValue(true);

expect(spectator.service.isLoggedIn()).toBeFalsy();

});

it('should be logged in', () => {

const dateService = spectator.inject<DateService>(DateService);

dateService.isExpired.mockReturnValue(false);

expect(spectator.service.isLoggedIn()).toBeTruthy();

});

});

When using the component schematic you can specify the --jest flag to have the Jest imports used. In order to Jest imports the default, update angular.json:

"schematics": {

"@ngneat/spectator:spectator-component": {

"jest": true

}

}