First Moles test - redirection not happening.

Question

Here's the code. GetParentPath is called as per normal!

    [TestMethod]
    [HostType("Moles")]
    public void GetParentPath_slashOnEnd_returns()
    {
        var sapi = new MPhotobucketApi();
        sapi.GetParentPathString = s => s;

        var api = new PhotobucketApi();
        var parentPath = api.GetParentPath("hello/world/");

        Assert.AreEqual(parentPath, "hello");
    }

Answer 1

The way you wrote your test, your redirection only applies to the runtime instance embeded in sapi. You need to intercept the constructor of PhotobucketApi and intercept 'future' instance of PhotobucketApi in there:

MPhotobucketApi.Contructor = (me) => {
    new MPhotobucketApi { GetParentPathString = s => s }; 
};
...

The other aproach is to redirect GetParentPath for all instance by doing this:

MPhotobucketApi.AllInstances.GetParentPathString = (me, s) => s;
...