RE: [MO-java-dev] How to test double conditional implementation, which could change...

[Dan C. <da...@dy...>]

Why not run a few tests. One in which the both Booleans are false, one
in which both Booleans are true and one in which the first is false and
the second is true?

-----Original Message-----
From: moc...@li...
[mailto:moc...@li...] On Behalf Of
Francois Beausoleil
Sent: Monday, June 23, 2003 10:14 PM
To: moc...@li...
Subject: [MO-java-dev] How to test double conditional implementation,
which could change...

Hi !

I have a test which tests for the presence of two keys in a Map.  If one
or both keys are missing, do A, else B.  So, here's what the code looks
like at the moment:
if (false =3D=3D getConstantsMap().containsKey(constantName + =
CLASS_SUFFIX)
        || false =3D=3D getConstantsMap().containsKey(constantName +
        VALUE_SUFFIX)) {

No, Java is able to short-circuit the evaluation of a condition if the
truth of a condition can be determined early.  Right now, I am setting
up
my dynamock so:
final Mock mockMap =3D new Mock(Map.class);
mockMap.expectAndReturn("containsKey",
        C.eq(constantName + ".class"),
        false);
mockMap.expectAndReturn("containsKey",
        C.eq(constantName + ".value"),
        true);
mockMap.expect("put",
        C.args(
                C.eq(constantName + ".class"),
                C.eq(Integer.TYPE)
        )
);

My test fails because Java short circuits the evaluation of the second
condition.  I changed to using a matchAndReturn for the second
containsKey, but this is an implementation detail.

What would you guys recommend ?  Should I use matchAndReturn for both
containsKey() setups, or should I change the implementation to use temp
variables and then test these ?

Thanks,
Fran=E7ois
--
  Francois Beausoleil
  Developer of Java Gui Builder
  http://jgb.sourceforge.net/


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