How to use the @spartacus/core.AuthActions.LOGIN function in @spartacus/core

it(`Should call the push method first time a login is successful`, () => {
    let timesCalled = 0;
    const subscription = spartacusEventTracker
      .loginSuccessful()
      .pipe(tap(_ => timesCalled++))
      .subscribe();
    mockActionsSubject.next({ type: AuthActions.LOGIN });
    mockActionsSubject.next({ type: AuthActions.LOGIN });
    mockActionsSubject.next({ type: AuthActions.LOGOUT });
    mockActionsSubject.next({ type: AuthActions.LOGOUT });
    mockActionsSubject.next({ type: AuthActions.LOGOUT });
    mockActionsSubject.next({ type: AuthActions.LOGIN });
    mockActionsSubject.next({ type: AuthActions.LOGIN });
    mockActionsSubject.next({ type: AuthActions.LOGIN });
    mockActionsSubject.next({ type: AuthActions.LOGIN });
    mockActionsSubject.next({ type: AuthActions.LOGIN });
    mockActionsSubject.next({ type: AuthActions.LOGOUT });
    mockActionsSubject.next({ type: AuthActions.LOGOUT });
    mockActionsSubject.next({ type: AuthActions.LOGOUT });
    subscription.unsubscribe();
    expect(timesCalled).toEqual(2);
  });
});

it(`Should call the push method first time a login is successful`, () => {
    let timesCalled = 0;
    const subscription = spartacusEventTracker
      .loginSuccessful()
      .pipe(tap(_ => timesCalled++))
      .subscribe();
    mockActionsSubject.next({ type: AuthActions.LOGIN });
    mockActionsSubject.next({ type: AuthActions.LOGIN });
    mockActionsSubject.next({ type: AuthActions.LOGOUT });
    mockActionsSubject.next({ type: AuthActions.LOGOUT });
    mockActionsSubject.next({ type: AuthActions.LOGOUT });
    mockActionsSubject.next({ type: AuthActions.LOGIN });
    mockActionsSubject.next({ type: AuthActions.LOGIN });
    mockActionsSubject.next({ type: AuthActions.LOGIN });
    mockActionsSubject.next({ type: AuthActions.LOGIN });
    mockActionsSubject.next({ type: AuthActions.LOGIN });
    mockActionsSubject.next({ type: AuthActions.LOGOUT });
    mockActionsSubject.next({ type: AuthActions.LOGOUT });
    mockActionsSubject.next({ type: AuthActions.LOGOUT });
    subscription.unsubscribe();
    expect(timesCalled).toEqual(2);
  });
});

      filter(action => action.type === AuthActions.LOGIN),
      mapTo(true)

buildLoginEvent(): Observable {
    return this.create([AuthActions.LOGIN]).pipe(
      mapTo(true),
      distinctUntilChanged()
    );
  }

action =>
          action.type === AuthActions.LOGIN ||
          action.type === AuthActions.LOGOUT
      ),