NSubstitute DbSet / IQueryable

Question

So EntityFramework 6 is a lot better testable then previous versions. And there are some nice examples on the internet for frameworks like Moq, but the case is, I prefer usi

Answer 1

You shouldn't need to mock all of the pieces of the IQueryable. When I use NSubstitute for mocking an EF DbContext I do something like so:

interface IContext
{
  IDbSet Foos { get; set; }
}

var context = Substitute.For();

context.Foos.Returns(new MockDbSet());

With a simple implementation of IDbSet around a list or something for my MockDbSet().

In general you should be mocking interfaces, not types as NSubstitute will only override virtual methods.