How to use the angular-bootstrap-md.MDBBootstrapModule.forRoot function in angular-bootstrap-md

beforeEach(async(() => {
    TestBed.configureTestingModule({
      declarations: [
        ContributorsComponent,
        pipe,
        GetFirstWord
      ],
      imports: [
        FormsModule,
        MDBBootstrapModule.forRoot(),
        NgbModule.forRoot()
      ]
    })
    .compileComponents();
  }));

ProjectsComponent,
    NavbarComponent,
    FooterComponent,
    ContactComponent,
    FAQComponent,
    NewcomersComponent,
    ContributorsComponent,
    pipe,
    GetFirstWord,
    ProgramsComponent
  ],
  imports: [
    BrowserModule,
    BrowserAnimationsModule,
    HttpModule,
    MDBBootstrapModule.forRoot(),
    FormsModule,
    AppRoutingModule,
    HttpClientModule,
    NgbModule.forRoot(),
    AgmCoreModule.forRoot({
      apiKey: 'Your_api_key'
    })
  ],
  providers: [CommonService, IssueService],
  bootstrap: [AppComponent],
  schemas: [ NO_ERRORS_SCHEMA ]
})
export class AppModule { }

@NgModule({
  declarations: [
    AppComponent,
    OptionsComponent,
    PopupComponent,
    BackgroundComponent,
    NavbarComponent
  ],
  imports: [
    BrowserModule,
    AppRoutingModule,
    ReactiveFormsModule,
    CollapseModule.forRoot(),
    MDBBootstrapModule.forRoot()
  ],
  schemas: [ NO_ERRORS_SCHEMA],
  providers: [],
  bootstrap: [AppComponent]
})

export class AppModule { }

import { AdminGaurd } from "./services/admin-gaurd";
import { AuthGuard } from "./services/auth_gaurd";
import { AuthService } from "./services/auth.service";
import { UserService } from "./services/user.service";
import { TranslatePipe } from "./pipes/translate.pipe";
import { NgxContentLoadingModule } from "ngx-content-loading";
import { CardLoaderComponent } from "./components/card-loader/card-loader.component";
import { MomentTimeAgoPipe } from "./pipes/moment-time-ago.pipe";
import { DragDropModule } from "@angular/cdk/drag-drop";
import { ScrollingModule } from "@angular/cdk/scrolling";
import { CdkTableModule } from "@angular/cdk/table";
import { CdkTreeModule } from "@angular/cdk/tree";
@NgModule({
	imports: [
		CommonModule,
		MDBBootstrapModule.forRoot(),
		AngularFireModule.initializeApp(FireBaseConfig),
		AngularFireDatabaseModule,
		AngularFireAuthModule,
		FormsModule,
		HttpClientModule,
		RouterModule,
		OwlModule,
		NgxPaginationModule,
		AgmCoreModule.forRoot({
			apiKey: "AIzaSyDMbxW3MlwUP2vrAZVJyu7pYqZa1LthvTE"
		}),
		NgxContentLoadingModule
	],
	declarations: [
		NoProductsFoundComponent,
		FilterByBrandPipe,

beforeEach(async(() => {
    TestBed.configureTestingModule({
      declarations: [ ProjectsComponent ],
      imports: [
        MDBBootstrapModule.forRoot(),
        NgbModule.forRoot()
      ]
    })
    .compileComponents();
  }));

SmallCartComponent,
    LoginComponent,
    RegisterComponent,
    PaypalCheckoutComponent,
    OrderConfirmationComponent,
    AccountComponent,
    CheckoutComponent,
    CheckoutNavbarComponent,
    ReviewComponent,
    CustomerInfoComponent,
    PaymentInfoComponent
  ],
  imports: [
    BrowserModule,
    AppRoutingModule,
    MDBBootstrapModule.forRoot(),
    HttpClientModule,
    FormsModule,
    ReactiveFormsModule,
    BrowserAnimationsModule,
    NgbToastModule,
    ToastrModule.forRoot(),
    NgxPayPalModule 
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

LoginComponent,
    FeedComponent,
    AddPollComponent,
    TopbarComponent,
    ProfileComponent,
    MyPollsComponent
  ],
  imports: [
    BrowserModule,
    FormsModule,
    HttpModule,
    AngularFireModule.initializeApp(firebaseConfig),
    AngularFireDatabaseModule,
    AngularFireAuthModule,
    routing,
    MDBBootstrapModule.forRoot()
  ],
  schemas: [ NO_ERRORS_SCHEMA ],
  providers: [AuthenticationService],
  bootstrap: [AppComponent]
})
export class AppModule { }

beforeEach(async(() => {
    TestBed.configureTestingModule({
      declarations: [ ContactComponent ],
      imports: [
        MDBBootstrapModule.forRoot(),
      ]
    })
    .compileComponents();
  }));

SearchTableComponent,
    ModalBasicComponent,
    ModalAdvancedComponent,
    ModalEventsComponent,
    ModalFormsComponent,
    ModalStylesComponent,
    MapsComponent,
    CssMainComponent,
    HoverComponent,
    ShadowsComponent,
    MasksComponent,
    PaginationApiComponent
  ],
  imports: [
    BrowserModule.withServerTransition({ appId: 'serverApp' }),
    MDBBootstrapModule.forRoot(),
    RoutesModule,
    FormsModule,
    BrowserAnimationsModule,
    ReactiveFormsModule,
    AgmCoreModule.forRoot({}),
    HttpModule
  ],
  providers: [SharedService],
  bootstrap: [AppComponent]
})
export class AppModule { }

beforeEach(async(() => {
    TestBed.configureTestingModule({
      declarations: [ NewcomersComponent ],
      imports: [
        MDBBootstrapModule.forRoot(),
        NgbModule.forRoot()
      ]
    })
    .compileComponents();
  }));