"Expected spy on mockLogin.getToken to equal true." is the error showing up - unit-testing

Question

What I am trying to do is get access to my return value of the mockLoginService.getToken and check if it is equal to true. How can I achieve that?
import { async, ComponentFixture, TestBed, waitForAsync } from '#angular/core/testing';
import { FormsModule } from '#angular/forms';
import { RouterTestingModule } from '#angular/router/testing';
import { TranslateModule } from '#ngx-translate/core';
import { AppMetadataHandler } from 'app/BaseFramework/configs';
import { AuthenticationService, LoginService } from 'app/BaseFramework/core';
import { ThreadsService } from 'app/BaseFramework/core/utilities/threads.service';
import { NgZorroAntdModule } from 'app/ng-zorro.module';
import { AsyncSubject, of } from 'rxjs';
import { LoginComponent } from './login.component';
describe('LoginComponent', () => {
let component: LoginComponent;
let fixture: ComponentFixture<LoginComponent>;
const mockDb={username:'admin',password:'admin'}
let mockAuthenticationService;
let mockAppMetadataHandler;
// const mockThreadsService= jasmine.createSpyObj<ThreadsService>(['PRELOGINTHREAD'])
let mockLoginService;
beforeEach(waitForAsync(() => {
mockLoginService=jasmine.createSpyObj<LoginService>('mockLogin',['getToken']);
mockAppMetadataHandler = jasmine.createSpyObj\<AppMetadataHandler>(['getEntryPoint','featureFlags']);
mockAuthenticationService = jasmine.createSpyObj<AuthenticationService>(['logout','fetchToken'])
TestBed.configureTestingModule({
declarations: [ LoginComponent ],
providers:[
{provide:AuthenticationService,useValue:mockAuthenticationService },
{provide:AppMetadataHandler,useValue: mockAppMetadataHandler},
{provide:ThreadsService,useValue: {
PRELOGINTHREAD: () => of([1,2,3]),
_errorThreadLog:()=>of('')
}}
],
imports:[NgZorroAntdModule, RouterTestingModule,TranslateModule.forRoot(),FormsModule,]
})
.compileComponents();
}));
beforeEach(() => {
fixture = TestBed.createComponent(LoginComponent);
component = fixture.componentInstance;
fixture.detectChanges();
});
it('should create', () => {
expect(component).toBeTruthy();
});
it('Should be Login Successful if success is true ', () => {
component.loginContext={username:'admin',password:'admin'}
expect(component.loginContext).toEqual(mockDb)
let returnval = mockLoginService.getToken.and.returnValue(of(true));
expect(returnval).toEqual(true)
});
});
Angular CLI: 12.2.18
Node: 14.17.3
Package Manager: npm 6.14.13
OS: win32 x64
Angular: 12.2.17