Re: Where shoul I throw RuntimeException

From:
Eric Sosman <esosman@ieee-dot-org.invalid>
Newsgroups:
comp.lang.java.programmer
Date:
Thu, 21 May 2009 22:00:26 -0400
Message-ID:
<gv50vt$r0g$1@news.eternal-september.org>
Giovanni Azua wrote:

"Eric Sosman" <Eric.Sosman@sun.com> wrote

    Also, if assertions are misused as validators, it's quite likely


I never suggested this, in fact, the first thing I did was to break down the
cases: real input validation vs. preconditions check

that you'll need to enable assertions in class BugFree in order to
catch misuses originating in class BugRidden. I don't see how this
would tag BugFree with the "lame" label

Can't happen because you tested BugRidden too, remember? unless we are
talking meta-programing here, are we?


     Ah. So all we need is a suitable predicate, like

    assert
callerAndCallersCallersAllTheWayUpTheStackHaveBeenThoroughlyTestedAndTheTestsWereComprehensiveAndTheResultsWereProperlyScrutinizedAndEverythingIsCopaceticAndGodsInHisHeavenAllsRightWithTheWorldOhAndByTheWayItsThreadSafeToo()
: "Danger, Will Robinson!";

The implementation of the predicate is left as an exercise.
Don't forget to test it ...

--
Eric Sosman
esosman@ieee-dot-org.invalid

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