Jasmine test to cover catchError in service call

Question

I'm trying since many days to write test for catchError in the below function, but nothings seems to work.

getProducts(productCategory: string | undefined, productStatus: string): Observable<IProductListResponseWrapper> {
    return this.http.get<IProductListResponseWrapper>(
         ${environment.products}? 
         productType=${productCategory}&productStatus=${productStatus},
    ).pipe(
         retry(environment.productRetryCount),
         catchError((error) => this.handleError(error, 
         this.getPageNameFromStatus(productStatus))),
    );
}

I tried

it('handle error', fakeAsync(() => {
    const mockError = { error: 'someError' } as ErrorEvent;
    service.getProducts("1",ProductStatusEnum.LIVE).subscribe(() => {fail });
    const req = httpTestingController.expectOne('/assets/data/products.json?productType=1&productStatus=LIVE');
    req.error(mockError);
}));

it('handle error', fakeAsync(() => {
    const mockError = { error: 'someError' } as ErrorEvent;
    service.getProducts("1",ProductStatusEnum.LIVE).subscribe(() => { }, (thrownError) => {
        expect(thrownError.error).toEqual(mockError);
    });
    const req = httpTestingController.expectOne('/assets/data/products.json?productType=1&productStatus=LIVE');
    req.error(mockError);
}));