Web Apps: When to Test in Isolation

With 40 screencasts in the catalog, many of which discuss testing, we now have enough context to talk about when to test in isolation and when to integrate. It comes down to one main question: who owns the interfaces you depend on? We'll go through the major components in a modern web app, looking at why each can be tested in isolation or not, or why they're somewhere between those extremes, and see exactly why each one falls where it does.