A strict unit test SHOULD have caught your bug here in code coverage:
...final important step is to analyze and maximize code coverage. We recommend that you implement a dynamic coding standard requiring that all code must have 100% line coverage upon check in to source control.

but of course still with 100%CC, bugs may slip through due to the Quis Custodiet Ipsos Custodes (Who watches the watchmen?) problem of writing test software....

The issue of boxing/unboxing is not black/white, there is a spectrum of "grey goo" in between...

/ allan

In reply to Re: Neither system testing nor user acceptance testing is the repeat of unit testing (OT) by ady
in thread Neither system testing nor user acceptance testing is the repeat of unit testing (OT) by pg

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