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Writing Unit Tests for Existing Code?
out-of-order asks: "I recently became a member of a large software organization which has placed me in the role of preparing the Unit Test effort for a component of software. Problem is that everything that I've read about Unit Testing pertains to 'test-driven' design, writing test cases first, etc. What if the opposite situation is true? This organization was writing code before I walked in the door and now I need to test it. What methodology is there for writing test cases for code that already exists?"
Guys, my legacy code doesn't have functions, just VB subroutines that modify global variables. Any idea how to make unit tests for this? And by the way, the functions aren't cohesive, each one is 100's of lines and does different sometimes unrelated things.