I’m mocking the following interface:

public IVirtualFile
{
    string Contents { get; set; }
    // ...
    void SaveToDisk();
    // ...
}

With this:

[TestFixture]
public TestVirtualFile
{
    [OneTimeSetUp]
    public void CreateMocks()
    {
        // ...
        Mock<IVirtualFile> mockVirtualFile = new Mock<IVirtualFile>();

        mockVirtualFile.Setup(vf => vf.SaveToDisk()).Callback(() => CheckSavedData());
        // ...
    }

    private void CheckSavedData()
    {
        // ...
    }    
}

The thing is, I want CheckSavedData() to use Assert to test the Contents property of my mock object.

So how can I pass said mock object to the method? Or should I make mockVirtualFile a property of TestVirtualFile and use it in CheckSavedData()?