TestHost.Create() has incompatible overloads

[joaroyen]

rc1 added a set of "Func<IServiceCollection, IServiceProvider> configureServices" overloads to TestHost.Create() that is not compatible with the existing "Action configureServices" overloads:

public static TestServer Create(Action<IApplicationBuilder> configureApp, Action<IServiceCollection> configureServices)
public static TestServer Create(Action<IApplicationBuilder> configureApp, Func<IServiceCollection, IServiceProvider> configureServices)

After upgrading to rc1 I get this error from the compiler:
Error CS0407 'void Startup.ConfigureServices(IServiceCollection)' has the wrong return type MediaStreams.Test.

I've currently implemented a workaround by changing signature from void to System.IServiceProvider and returning services.BuildServiceProvider() at the end of the method.

[muratg]

Ugh. Perhaps we should rename the second overload?

@davidfowl

[Radek44]

Quick workaround for now is to cast explicitely:

var startup = new Startup(hostingEnvironment, applicationEnvironment);
var server = TestServer.Create(startup.Configure, (Action<IServiceCollection>)startup.ConfigureServices);