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  • I think the real cost saver is over the lifetime of the application. It may actually add to the cost of development. Commented Jun 16, 2011 at 14:12
  • Agree, added "and supporting" =) Commented Jun 16, 2011 at 14:16
  • 1
    @Xhalent: unit testing doesn't add to the cost of development, it is an integral part, much like spell checking a document doesn't add to the cost of writing. Unit testing shouldn't be considered an optional extra step. It is part of what you do if you are a professional programmer. Commented Mar 21, 2012 at 12:58
  • Kind of, it is different from spell checking, so I would prefer not to use that analogy, but it is definitely should be a part of standard development process. Commented Mar 22, 2012 at 1:39