I basically have the gist of TDD. I'm sold that it's useful and I've got a reasonable command of the MSTEST framework. However, to date I have not been able to graduate to using it as a primary development method. Mostly, I use it as a surrogate for writing console apps as test drivers (my traditional approach).

The most useful thing about it for me is the way it absorbs the role of regression testing.

I have not yet built anything yet that specifically isolates various testable behaviors, which is another big part of the picture I know.

So this question is to ask for pointers on what the first test(s) I might write for the following development task: I want to produce code that encapsulates task execution in the fashion of producer/consumer.

I stopped and decided to write this question after I wrote this code (wondering if I could actually use TDD for real this time)

Code:

interface ITask
{
    Guid TaskId { get; }
    bool IsComplete { get; }
    bool IsFailed { get; }
    bool IsRunning { get; }
}

interface ITaskContainer
{
    Guid AddTask(ICommand action);
}

interface ICommand
{
    string CommandName { get; }
    Dictionary<string, object> Parameters { get; }
    void Execute();
}