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Why does moq claim that my mock set setter is never called, even though the code calls it?

I have the following unit test:

[TestClass]
public class DirectoryWatcherTests
{
    private AutoMoqer _mocker;
    private DirectoryWatcher _instance;

    [TestInitialize]
    public void Setup()
    {
        _mocker = new AutoMoqer();
        _instance = _mocker.Create<DirectoryWatcher>();
    }

    [TestMethod]
    public void Watcher_Gets_Path_Set_Same_As_Begin_Path_Parameter()
    {
        const string path = @"C:\test";
        _instance.Begin(path);

        _mocker.GetMock<FileSystemWatcherBase>()
               .VerifySet(x => x.Path = path);
    }
}

The code I wrote to convey this was:

public class DirectoryWatcher
{
    private readonly FileSystemWatcherBase _fileSystemWatcher;

    public DirectoryWatcher(FileSystemWatcherBase fileSystemWatcher)
    {
        _fileSystemWatcher = fileSystemWatcher;
    }

    public void Begin(string path)
    {
        if (string.IsNullOrWhiteSpace(path))
            throw new ArgumentException("FileSystemWatcher passed in without a valid path already set");

        _fileSystemWatcher.Path = path;
    }
}

However, it VerifySetdoes not:

The expected call to the layout at least once, but never executed: x => x.Path = "C: \ test"

Why does he claim that the setter is never called? If that helps at all FileSystemWatcherBase- an abstract class.

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1 answer

Thanks to Eugene, I realized that this seems to be a problem with Automoq and its compatibility with the latest version of Unity. I created the following tests to prove that this is an Automoq problem, not a Moq problem:

    [TestMethod]
    public void Test()
    {
        const string path = @"C:\test";
        var watcherMock = new Mock<FileSystemWatcherBase>();
        watcherMock.Object.Path = path;
        watcherMock.VerifySet(x => x.Path = path);
    }

    [TestMethod]
    public void Test2()
    {
        const string path = @"C:\test";
        var mocker = new AutoMoqer();
        var instance = mocker.Create<Tester>();
        var watcherMock = mocker.GetMock<AbstractTest>();
        watcherMock.Object.Path = path;
        watcherMock.VerifySet(x => x.Path = path);
    }

    [TestMethod]
    public void Test3()
    {
        const string path = @"C:\test";
        var mocker = new AutoMoqer();
        var instance = mocker.Create<Tester>();
        var watcherMock = mocker.GetMock<AbstractTest>();
        instance.Run(path);
        watcherMock.VerifySet(x => x.Path = path);
    }

    [TestMethod]
    public void Test4()
    {
        const string path = @"C:\test";
        var testMock = _mocker.GetMock<AbstractTest>();
        var tester = new Tester(testMock.Object);
        tester.Run(path);

        testMock.VerifySet(x => x.Path = path);
    }

    public abstract class AbstractTest
    {
        public abstract string Path { get; set; }
    }

    public class Tester
    {
        private readonly AbstractTest _test;

        public Tester(AbstractTest test)
        {
            _test = test;
        }

        public void Run(string path)
        {
            _test.Path = path;
        }
    }

1, 2 4 , 3 . :

    [TestMethod]
    public void Test5()
    {
        const string path = @"C:\test";
        var mocker = new AutoMoqer();
        var watcherMock = mocker.GetMock<AbstractTest>();
        var instance = mocker.Create<Tester>();

        instance.Run(path);
        watcherMock.VerifySet(x => x.Path = path);
    }

, Automoq , , . , Automoq , moq , , , GetMock<T> .

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