Is there hard evidence of the ROI of unit testing?

Question

Unit testing sounds great to me, but I\'m not sure I should spend any time really learning it unless I can convince others that is has significant value. I have to convince

Answer 1

If you are also interested in evidence against unit testing here is one well researched and thought out article:

Why Most Unit Testing is Waste By James O Coplien (lean and agile guru)