Why is JustMock claiming my mocked method is never getting called?

Question

I have the following code in my application:

public class DirectoryCrawler
{
    private IPathWrap _path;
    private IDirectoryWrap _directory;
    private ITrackedFileStore _trackedFileStore;
    private IFileWrap _file;

    public DirectoryCrawler(IPathWrap path, ITrackedFileStore trackedFileStore, IDirectoryWrap directory, IFileWrap file)
    {
        _path = path;
        _trackedFileStore = trackedFileStore;
        _directory = directory;
        _file = file;
    }

    public void CheckDirectoryContents(string baseDirectory)
    {
        var trackedFiles = _trackedFileStore.GetTrackedFilesInPath(baseDirectory);
    }
}

I'm unit testing it via:

[TestClass]
public class DirectoryCrawlerTests
{
    private MockingContainer<DirectoryCrawler> _mockContainer;

    [TestInitialize]
    public void Setup()
    {
        _mockContainer = new MockingContainer<DirectoryCrawler>();
    }

    [TestMethod]
    public void Requests_Tracked_Files_In_Path()
    {
        var instance = _mockContainer.Instance;
        instance.CheckDirectoryContents("C:\\Test");

        _mockContainer.Assert<ITrackedFileStore>(x => x.GetTrackedFilesInPath(Arg.IsAny<string>()), Occurs.Once());
    }
}

However, the assert is failing claiming Result Message: Occurrence expectation failed. Expected exactly 1 call. Calls so far: 0

Why is JustMock not detecting the occurrence correctly? This is with the latest JustMock lite Nuget package (2014.1.1317.4)

Answer 1

As stated in the comments, call verification is different when you use AutoMocking.

You must Arrange the automocked dependency method to be called and specify it with MustBeCalled().