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.component.spec.ts
import { CUSTOM_ELEMENTS_SCHEMA } from '@angular/core';
import {TestBed, async, fakeAsync, tick} from '@angular/core/testing';
import { Platform } from '@ionic/angular';
import { SplashScreen } from '@ionic-native/splash-screen/ngx';
import { StatusBar } from '@ionic-native/status-bar/ngx';
import { AppComponent } from './app.component';
import {RouterTestingModule} from '@angular/router/testing';
import {Router} from '@angular/router';
import {Location} from '@angular/common'
import { LoginPage } from './pages/login/login.page';
import { routes } from "./app-routing.module";
import {HttpClientTestingModule} from '@angular/common/http/testing';
import {StorageMock} from './testing/mocks/storage.mock';
import {IonicStorageModule} from '@ionic/storage';
describe('AppComponent', () => {
let statusBarSpy, splashScreenSpy, platformReadySpy, platformSpy, storageSpy;
let router: Router;
let location: Location;
let fixture;
let comp: AppComponent;
beforeEach(async(() => {
statusBarSpy = jasmine.createSpyObj('StatusBar', ['styleDefault']);
splashScreenSpy = jasmine.createSpyObj('SplashScreen', ['hide']);
platformReadySpy = Promise.resolve();
platformSpy = jasmine.createSpyObj('Platform', { ready: platformReadySpy });
storageSpy = jasmine.createSpyObj('Storage', ['get', 'set', 'clear', 'remove', 'ready']);
TestBed.configureTestingModule({
declarations: [AppComponent],
imports: [
RouterTestingModule.withRoutes(routes),
IonicStorageModule.forRoot(),
HttpClientTestingModule,
],
schemas: [CUSTOM_ELEMENTS_SCHEMA],
providers: [
{ provide: StatusBar, useValue: statusBarSpy },
{ provide: SplashScreen, useValue: splashScreenSpy },
{ provide: Platform, useValue: platformSpy },
{ provide: Storage, useClass: StorageMock }
],
}).compileComponents();
router = TestBed.get(Router);
location = TestBed.get(Location);
fixture = TestBed.createComponent(AppComponent);
comp = fixture.componentInstance;
router.initialNavigation();
}));
it('should create the app', () => {
const fixture = TestBed.createComponent(AppComponent);
const app = fixture.debugElement.componentInstance;
expect(app).toBeTruthy();
});
it('should initialize the app', async () => {
TestBed.createComponent(AppComponent);
expect(platformSpy.ready).toHaveBeenCalled();
await platformReadySpy;
expect(statusBarSpy.styleDefault).toHaveBeenCalled();
expect(splashScreenSpy.hide).toHaveBeenCalled();
});
it('navigates to "" redirects you to /login', fakeAsync(() => {
router.navigate(['']);
tick();
expect(location.path()).toBe('/login')
}));
afterEach(() => {
fixture.destroy();
comp = null
})
});
And have created my own StorageMock:
import {Storage, StorageConfig} from '@ionic/storage';
export class StorageMock extends Storage {
driver: string;
vals: {};
constructor(config: StorageConfig) {
super({})
}
clear() {
return new Promise<void>((res) => res())
}
ready() {
return new Promise<LocalForage>((res) => res())
}
get(key: string) {
return new Promise((res) => res(this.vals[key]))
}
set(key, val) {
return new Promise((res) => {
this.vals[key] = val;
res()
})
}
remove(key) {
return new Promise((res) => {
delete this.vals[key];
res()
})
}
}
However when I run my test, I still see:
Error: Can't resolve all parameters for Storage: (?).
What am I missing?