Another example is TDD for fixing bugs. Reproduce the bug Capture reproduction steps in a test Fix the bug Deploy It's a similar process. If y

Another example is TDD for fixing bugs. Reproduce the bug Capture reproduction steps in a test Fix the bug Deploy It's a similar process. If you are going through all the effort of reproducing the test, you might as well automate it. If you are going through all the effort of design, you might as well capture it programmatically. That said, I have two main principles I follow: 1) Black box test at the interface level. 2) Be willing to delete tests if they become bothersome.