I am creating some tests in Angular 4. I have a component that is using PrettyJsonCompont in order to show well formatted json to the user.
When I run ng test several of my component tests fail with the same message.
Failed: Type PrettyJsonComponent is part of the declarations of 2 modules: PrettyJsonModule and DynamicTestModule! Please consider moving PrettyJsonComponent to a higher module that imports PrettyJsonModule and DynamicTestModule. You can also create a new NgModule that exports and includes PrettyJsonComponent then import that NgModule in PrettyJsonModule and DynamicTestModule.
Here is what my test looks like.
import {async, ComponentFixture, TestBed} from '@angular/core/testing';
import {ContentItemModalComponent} from './content-item-modal.component';
import {DialogService} from 'ng2-bootstrap-modal';
import {ContentItemService} from '../services/content-item.service';
import {FormsModule, ReactiveFormsModule} from '@angular/forms';
import {FroalaEditorModule, FroalaViewModule} from 'angular-froala-wysiwyg';
import {HttpModule} from '@angular/http';
import {MainModel} from '../models/main-model';
import {PrettyJsonComponent, PrettyJsonModule} from 'angular2-prettyjson';
describe('ContentItemModalComponent', () => {
let component: ContentItemModalComponent;
let fixture: ComponentFixture<ContentItemModalComponent>;
beforeEach(async(() => {
TestBed.configureTestingModule({
imports: [
ReactiveFormsModule,
FormsModule,
FroalaEditorModule.forRoot(),
FroalaViewModule.forRoot(),
HttpModule,
PrettyJsonModule
],
declarations: [ContentItemModalComponent, PrettyJsonComponent],
providers: [
DialogService,
ContentItemService,
MainModel
],
})
.compileComponents();
}));
beforeEach(() => {
fixture = TestBed.createComponent(ContentItemModalComponent);
component = fixture.componentInstance;
fixture.detectChanges();
});
it('should be created', () => {
expect(component).toBeTruthy();
});
});