Ensure container has IServiceProvider/IServiceScopeFactory

[dahlbyk]

Testing a Registry that uses Configure()/Register() (from #2) should not depend on calling Populate() for factory or scoped service descriptors to work.

StructureMap.StructureMapConfigurationException:
No default Instance is registered and cannot be automatically determined for type 'System.IServiceProvider'

This isn't a huge problem in tests, but as I noted below we plan to convert registries that are only used in legacy apps that might never call Populate().

Workaround

var container = new Container();
container.Configure(c =>
{
    c.IncludeRegistry<MyRegistry>();
    c.Populate([]);
});
container.AssertConfigurationIsValid();

Not terrible, just annoying.

[dahlbyk]

I may have changed my mind already?

c.Populate([]) is annoying but c.Populate([], checkDuplicateCalls: true) is useful to make sure Populate() isn't used in the Registry or its dependencies. 🤔

[dahlbyk]

I have unchanged my mind. We'll be using this infrastructure to migrate registries that are consumed by legacy apps that won't necessarily ever call Populate(). Still wise for tests to call Populate([], checkDuplicateCalls: true) to guard against duplicates, but it seems safer to ensure that IServiceProvider and IServiceScopeFactory are available.