NMock2.0 - how to stub a non interface call?

Answer 1

The current version of NMock2 can mock concrete types (I don't remember exactly which version they added this, but we're using version 2.1) using the mostly familiar syntax:

Job job = mockery.NewMock<Job>(MockStyle.Transparent);
Stub.On(job).Method("ValidateFoo").Will(Return.Value(true));

MockStyle.Transparent specifies that anything you don't stub or expect should be handled by the underlying implementation - so you can stub and set expectations for methods on an instance you're testing.

However, you can only stub and set expectations on public methods (and properties), which must also be virtual or abstract. So to avoid relying on integration testing, you have two options:

• Make Job.ValidateFoo() public and virtual.
• Extract the validation logic into a new class and inject an instance into Job.