I updated angular version from 17 to 18 and because of which some modules are no longer supporter especially in spec.ts files while importing them.
Like **async **from @angular/core/testing and **provideRouterTesting **from @angular/router/testing and **HttpClientTestingModule **from @angular/common/http/testing.

I need to know the alternatives for these modules. It will be helpful if anyone can update the alternative modules for these.