Unit test support

[hendryluk]

Example (with NUnit + NSubstitute)
Ref: http://jglue.org/cdi-unit-user-guide/#mocks

public class MyComponent
{
    [Inject] IDbSet<User> _users;
    [Inject] OtherComponent _otherStuff;
    public void DoSomething()
    {
    }
}

[CormoTest]
public class MyTest
{
    [Inject] MyComponent _component;
    [Produces, Mock] IDbSet <User> _users;

    [Test]
    public void Blah()
    {
        _component.DoSomething();
        _users.Received().Add(user);
    }
}

[hendryluk]

ok, perhaps xunit. For initial implementation I'll probably not even try to make it portable (e.g. nunit/xunit, nsubstitute/moq), I'll just pick xunit and nsubstitute.
Cdi-unit is portable (junit, testng, mockito, easymock).