Matching reference type parameters by Moq setup

Question

I have similar problem to the one asked here or here but the solutions seems not apply in my case.

Consider the following classes:

public interface IProductsWebService
{
    ICObjectLang[] GetClassLevel(getClassLevelLang criteria);
}

// the rest of this class was automaticaly generated as web service reference
public partial class getClassLevelLang : IEquatable<getClassLevelLang>
{
    public override bool Equals(object obj)
    {
        var other = obj as getClassLevelLang;

        return Equals(other);
    }

    public bool Equals(getClassLevelLang other)
    {
        if (this == other)
        {
            return true;
        }

        if (other == null)
        {
            return false;
        }

        return CID == other.CID &&
               accessCode == other.accessCode &&
               classCode == other.classCode &&
               depth == other.depth &&
               language == other.language &&
               partyCode == other.partyCode &&
               refId == other.refId;
    }

    public override int GetHashCode()
    {
        var hash = 531;

        hash += CID != null ? CID.GetHashCode() : 1;
        hash += accessCode != null ? accessCode.GetHashCode() : 1;
        hash += classCode != null ? classCode.GetHashCode() : 1;
        hash += depth != null ? depth.GetHashCode() : 1;
        hash += language != null ? language.GetHashCode() : 1;
        hash += partyCode != null ? partyCode.GetHashCode() : 1;
        hash += refId != null ? refId.GetHashCode() : 1;

        return hash;
    }

    public override string ToString()
    {
        var str = new StringBuilder();

        str.AppendFormat("CID: {0}, ", CID);
        str.AppendFormat("accessCode: {0}, ", accessCode);
        str.AppendFormat("classCode: {0}, ", classCode);
        str.AppendFormat("depth: {0}, ", depth);
        str.AppendFormat("language: {0}, ", language);
        str.AppendFormat("partyCode: {0}, ", partyCode);
        str.AppendFormat("refId: {0}", refId);

        return str.ToString();
    }
}

And the following code for testing (calls list is only for debugging):

private Mock<IProductsWebService> productsService;
private IProductsImportProcess target;

private List<getClassLevelLang> calls = new List<getClassLevelLang>();

[TestMethod]
public void RecursiveDownloadTest()
{
        //other mocks (configuration, log, categoryService and configurationService) set here

        target = new ProductsImportProcess(
            configuration.Object, log.Object, categoryService.Object,
            productsService.Object, configurationService.Object);

        productsService = new Mock<IProductsWebService>(MockBehavior.Strict);

        var root1 = new Category
        {
            CategoryID = "root1",
            SubCategories = new List<Category>
                                                {
                                                    new Category
                                                        {
                                                            CategoryID = "cat1.1",
                                                            SubCategories = new List<Category>
                                                                                {
                                                                                    new Category
                                                                                        {CategoryID = "cat1.1.1"}
                                                                                }
                                                        },
                                                    new Category
                                                        {
                                                            CategoryID = "cat1.2"
                                                        }
                                                }
        };
        var root2 = new Category { CategoryID = "root2" };

        setupProductsServiceCall("tree1", root1, true);
        setupProductsServiceCall("tree1", root1.SubCategories.First().SubCategories.First());
        setupProductsServiceCall("tree2", root2, true);

        target.Execute();

        productsService.VerifyAll();
    }

    private void setupProductsServiceCall(string treeCode, Category category, bool isRoot = false)
    {
        var config = configuration.Object;

        var criteria = new getClassLevelLang
                           {
                               CID = isRoot ? null : category.CategoryID,
                               language = "all",
                               partyCode = "something",
                               depth = "1",
                               classCode = treeCode,
                               accessCode = "xyz"
                           };
        var productsNode = TestUtils.CreateAbbProductsNode(category);

        productsService.Setup(mock => mock.GetClassLevel(It.Is<getClassLevelLang>(c => c.Equals(criteria)))).
            Callback<getClassLevelLang>(c => calls.Add(c)).        //added for debuging purposes only
            Returns(productsNode.objectAttributes).
            Verifiable();
}

The test above fails with the following exception:

Test method ProductsImport.Console.Test.ProductsImportProcessUnitTest.RecursiveDownloadTest threw exception: 
Moq.MockVerificationException: The following setups were not matched:
    IProductsWebService mock => mock.GetClassLevel(It.Is<getClassLevelLang>(c => c.Equals(CID: , accessCode: xyz, classCode: tree1, depth: 1, language: all, partyCode: something, refId: )))
    IProductsWebService mock => mock.GetClassLevel(It.Is<getClassLevelLang>(c => c.Equals(CID: cat1.1.1, accessCode: xyz, classCode: tree1, depth: 1, language: all, partyCode: something, refId: )))
    IProductsWebService mock => mock.GetClassLevel(It.Is<getClassLevelLang>(c => c.Equals(CID: , accessCode: xyz, classCode: tree2, depth: 1, language: all, partyCode: something, refId: )))
Result StackTrace:    
    at Moq.Mock.VerifyAll()

I'm sure that ProductsWebService.GetClassLevel is being called while getClassLevelLang.Equals is not (checked with debugger). What's more weird I've checked the actual value of calls just before calling VerifyAll() list and it's empty.

Answer 1

Your productsService mock is not getting injected into your ProductsImportProcess so cannot intercept calls made on the actual IProductsWebService. How do you instantiate the IProductsWebService object in your code?