TDD system under test creation templates (AutoFixture)

Question

I am trying to use SUT Factory 'pattern' to create my SUT.

Given the structure of the SUT:

namespace MySut
{
    public class Dep1
    {
    }

    public class Dep2
    {
    }

    public class Sut
    {
        public Sut( Dep1 dep1, Dep2 dep2 )
        {
        }
    }
}

I use AutoFixture , and I am wondering what the best way to collapse the following specifications and the associated SUT factory method [valuable, but] busy:

namespace MySpecifications
{
    using MySut;
    public class MySpecification
    {
        public void TestCore()
        {
            // Dont care about dependencies, testing core functionality
            var sut = CreateSut();
        }

        public void TestDep1Interaction()
        {
            // Dont care about Dep2, want to observe stuff on the Dep1 dependent object
            var sut = CreateSut( new Mock<Dep1>().Object );
        }

        public void TestDep2Interaction()
        {
            // Dont care about Dep1, want to observe stuff on the Dep2 dependent object
            var sut = CreateSut( new Mock<Dep2>().Object );
        }

        private object CreateSut( )
        {
            return CreateSut( CreateDep1(), CreateDep2() );
        }

        private object CreateSut( Dep1 dep1 )
        {
            return CreateSut( dep1, CreateDep2() );
        }

        private object CreateSut( Dep2 dep2 )
        {
            return CreateSut( CreateDep1(), dep2 );
        }

        private Sut CreateSut( Dep1 dep1, Dep2 dep2 )
        {
            return new Sut( dep1, dep2 );
        }

        private static Dep1 CreateDep1()
        {
            return new Fixture().CreateAnonymous<Dep1>();
        }

        private static Dep2 CreateDep2()
        {
            return new Fixture().CreateAnonymous<Dep2>();
        }
    }
}

to something like:

    public class MyAutoFixturedSpecification
    {
        public void TestCore()
        {
            // Dont care about dependencies, testing core functionality
            var sut = CreateSut();
        }

        public void TestDep1Interaction()
        {
            // Dont care about Dep2, want to observe stuff on the Dep1 dependent object
            var sut = CreateSut( new Mock<Dep1>().Object );
        }

        public void TestDep2Interaction()
        {
            // Dont care about Dep1, want to observe stuff on the Dep2 dependent object
            var sut = CreateSut( new Mock<Dep2>().Object );
        }

        private object CreateSut( params object[] injectedNonAnonymouses )
        {
            return new Fixture(  ).Build<Sut>(  )./*??????*/;
        }
    }

or

    public class MyAnticipatedAutoFixturedSpecification
    {
        public void TestCore()
        {
            // Dont care about dependencies, testing core functionality
            var sut = new Fixture(  ).Build<Sut>().CreateAnonymous(  );
        }

        public void TestDep1Interaction()
        {
            // Dont care about Dep2, want to observe stuff on the Dep1 dependent object
            var sut = new Fixture().Build<Sut>()/*.With( new Mock<Dep1>().Object )*/.CreateAnonymous();
        }

        public void TestDep2Interaction()
        {
            // Dont care about Dep1, want to observe stuff on the Dep2 dependent object
            var sut = new Fixture().Build<Sut>()/*.With( new Mock<Dep2>().Object )*/.CreateAnonymous();
        }
    }

ie, deleting all the garbage factory, so my specifications can easily handle the switch to:

namespace MySutWithNewDependency
{
    public class Dep1
    {
    }

    public class Dep2
    {
    }

    public class Dep3
    {
    }

    public class Sut
    {
        public Sut( Dep1 dep1, Dep2 dep2, Dep3 dep3 )
        {
        }
    }
}

, - 0 1 , Sut , .

( xUnit.net( SubSpec), Moq, Ninject2 ( DI ))

Answer 1

AutoFixture . Fixture Sut:

var fixture = new Fixture();
var sut = fixture.CreateAnonymous<Sut>();

, Dep1 Dep2 AutoFixture, , , , .

, Register :

var fixture = new Fixture();

var mock = new Mock<Dep1>();
fixture.Register(mock.Object);
// Setup mock if necessary...

var sut = fixture.CreateAnonymous<Sut>();

, fixture mock.Object Dep1, Sut. , , AutoFixture.

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AutoFixture . , API AutoFixture 1.1, ​​ AutoFixture 2.0 , , .

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