imports: [
    BrowserModule,
    ReactiveFormsModule,//Add if needed 
    FormsModule,     //Add if needed
    HttpClientModule,
  ],

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { FormsModule } from '@angular/forms'
import { ReactiveFormsModule } from '@angular/forms';
import { HttpClientModule, HTTP_INTERCEPTORS } from '@angular/common/http';
import { AppRoutingModule } from './app-routing.module';
import { AppComponent } from './app.component';
import { UserSettingsFormComponent } from './user-settings-form/user-settings-form.component';

@NgModule({
  declarations: [
    AppComponent,
    UserSettingsFormComponent
  ],
  imports: [
    BrowserModule,
    ReactiveFormsModule,
    HttpClientModule,
    FormsModule      
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

import { TestBed, async } from '@angular/core/testing';
import { RouterTestingModule } from '@angular/router/testing';
import { AppComponent } from './app.component';
import { FormsModule } from '@angular/forms'
import { ReactiveFormsModule } from '@angular/forms';

describe('AppComponent', () => {
  beforeEach(async(() => {
    TestBed.configureTestingModule({
      imports: [
        RouterTestingModule,
        ReactiveFormsModule,
        FormsModule 
      ],
      declarations: [
        AppComponent
      ],
    }).compileComponents();
  }));

  it('should create the app', () => {
    const fixture = TestBed.createComponent(AppComponent);
    const app = fixture.debugElement.componentInstance;
    expect(app).toBeTruthy();
  });

  it(`should have as title 'my-app'`, () => {
    const fixture = TestBed.createComponent(AppComponent);
    const app = fixture.debugElement.componentInstance;
    expect(app.title).toEqual('my-app');
  });

  it('should render title in a h1 tag', () => {
    const fixture = TestBed.createComponent(AppComponent);
    fixture.detectChanges();
    const compiled = fixture.debugElement.nativeElement;
    expect(compiled.querySelector('h1').textContent).toContain('Welcome to my-app!');
  });
});