I do a lot of unit testing(tdd) and would like some comments about my style. Here is a simple example from a composite.Is there anything I could improve?public class ChangedClaimsServiceComposite : IChangedClaimsService{    private readonly IChangedClaimsService[] changedClaimsServices;    public ChangedClaimsServiceComposite(params IChangedClaimsService[] changedClaimsServices)    {        if (changedClaimsServices == null) throw new ArgumentNullException(changedClaimsServices);        this.changedClaimsServices = changedClaimsServices;    }    public List<IChangedClaim> GetChangedClaims()    {        return changedClaimsServices.SelectMany(x => x.GetChangedClaims()).ToList();    }    public void SetClaimUpdated(IChangedClaim changedClaim)    {        foreach (var changedClaimsService in changedClaimsServices)        {            changedClaimsService.SetClaimUpdated(changedClaim);        }    }}[TestFixture]public class ChangedClaimsServiceCompositeTests{    [Test]    public void GetChangedClaimsSouldCombineResultsFromDependedServices()    {        //Arrange        var changedClaimService1 = new Mock<IChangedClaimsService>();        var changedClaimService2 = new Mock<IChangedClaimsService>();        var changedClaim1 = CreateAnyChangedClaim();        var changedClaim2 = CreateAnyChangedClaim();        var changedClaim3 = CreateAnyChangedClaim();        var changedClaim4 = CreateAnyChangedClaim();        changedClaimService1.Setup(x => x.GetChangedClaims())            .Returns(new List<IChangedClaim>() {changedClaim1, changedClaim2});        changedClaimService2.Setup(x => x.GetChangedClaims())            .Returns(new List<IChangedClaim>() { changedClaim3, changedClaim4 });        var sut = new ChangedClaimsServiceComposite(            changedClaimService1.Object,             changedClaimService2.Object);        //Act        var result = sut.GetChangedClaims();        //Assert        var expectedResult = new List<IChangedClaim>()        {            changedClaim1,            changedClaim2,            changedClaim3,            changedClaim4        };        Assert.That(result, Is.EqualTo(expectedResult), result);    }    [Test]    public void SetClaimUpdatedShouldCallSameMethodOnDependedServices()    {        //Arrange        var changedClaimService1 = new Mock<IChangedClaimsService>();        var changedClaimService2 = new Mock<IChangedClaimsService>();        var changedClaim = CreateAnyChangedClaim();        var sut = new ChangedClaimsServiceComposite(            changedClaimService1.Object,            changedClaimService2.Object);        //Act        sut.SetClaimUpdated(changedClaim);        //Assert        changedClaimService1.Verify(x => x.SetClaimUpdated(changedClaim), changedClaimService1);        changedClaimService2.Verify(x => x.SetClaimUpdated(changedClaim), changedClaimService2);    }    private IChangedClaim CreateAnyChangedClaim()    {        return new Mock<IChangedClaim>().Object;    }}
Unit tests for a simple composite
c#;unit testing