The objective is to do for Splat what projects like Autofac.Extras.Moq provide for Autofac. In short, provide primitive mocks for types encountered using Splat's Locator to simplify mocking scenarios where you are not verifying all dependencies but still require them to, at least, be non-null.

AutoSplat provides the AutoMockContext class to handle swapping the Locator dependency resolver for you. It will put the original resolver back in place once the context disposes. When inside the context, accessing services will return a mocked instance using Moq.

If verifying mocked methods and such is required you will need to create the Mock yourself (within the context with the Locator dependency resolver swapped) and invoke the resolver's Register method with the mock:

var example = new Mock<IExample>();
example.Setup(m => m.DoFoo()).Returns("foo");
Locator.CurrentMutable.Register(example.Object, typeof(IExample));