Legacy Code
Great post about Legacy Code and Tests.
http://craftedsw.blogspot.com/2011/07/working-with-legacy-code.html
Tests will slow down developers, bugs and new features will take longer, but it will be better in future of project.
Tests will document code and ease support. Also QA phase will be shorter.
Scout Rule: http://blog.solidcraft.eu/2010/05/boy-scout-rule-in-practice.html
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