>The assertion has been made that typical applications have between 40%-50% of their code actually run during testing.
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>I am curious to see what percentage of code you test (actually run during development/unit test/system testing) for:
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>1) The development of a system from scratch.
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>2) The development of a new/replacement system but using code parts (including classes, functions, etc.) from existing and well-running systems.
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>3) Developing revisions to an existing application.
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>Thanks for your reply.
At our company it was marked, that developer himself never able to find all problems, does not matter , how long did he test his code. He have 1-2 other person, who does casual clicking, etc and find many bugs. Few days ago I did find 5 erors in the product, which was already onsale for 1.5 of year and user did not hesitate. I did find it by casual reason, added some brige from this part os the soft and new part, we do now.