[Article] The Test Feasibility Matrix
Historical article · Originally published July 25, 2005; technical details may be outdated.
One of the toughest questions in projects that contain legacy code that would like to write unit tests from part of that code (it may need to change) are: "Where should I start?"
When one of my clients faced this question a while ago I came up with a small formula to help understand where we should focus our testing efforts on. I call it the "Test Feasibility Matrix"