TestDriven.NET FAQ List

I have started populating a FAQ list for TestDriven.NET.  Here is one just in from Alex Hildyard.

Q: After installing TestDriven.NET under XP Professional, Windows Firewall flags incoming connection warnings on attempting to run tests in VS. However, the add-in seems to operate correctly even if I disallow it internet access. Any ideas on what's causing this?

A: TestDriven.NET uses remoting over a TCP channel to communicate with the test process. This is what the Windows Firewall is detecting. Because is uses the localhost/127.0.0.1 loopback interface, it doesn't in fact require Internet access.