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From "Stepan Mishura" <stepan.mish...@gmail.com>
Subject Re: [classlib] [testing] math2 tests
Date Wed, 07 Jun 2006 02:32:10 GMT
So you suggest to generate thousands of 'dynamic' tests. Right?

Thanks,
Stepan.


On 6/7/06, Tim Ellison <t.p.ellison@gmail.com> wrote:
>
> I doubt it.
>
> Even if it were, the logic used to generate the tests can often be built
> into the runtime tests themselves to exercise the APIs thoroughly
> without creating thousands of 'static' tests.
>
> Regards,
> Tim
>
>
> Mikhail Loenko wrote:
> > I've found an issue similar to rmi tests[1]
> >
> > There is a method BigDecimal.subtract(BigDecimal,MathContext), its
> > implementation in math2 consists of 30 lines
> >
> > Implementation does not perform any heavy math: I've counted 5
> > possible execution paths, different branches are calling
> > BigInteger.multiply,
> > BigInteger.subtract, new BigDecimal, and couple more methods.
> >
> > The test against that method has 2198 generated test cases looking like
> the
> > following:
> >
> > public void testSubtractMathContextXXXX() {
> >    bigDec= new BigDecimal("...");
> >    BigDecimal bigDec2= new BigDecimal("...");
> >    assertEquals(msgNotSame, new BigDecimal("..."),
> >            bigDec.subtract(bigDec2,new MathContext(...)));
> > }
> >
> > Do we need that many tests for this method?
> >
> > Thanks,
> > Mikhail
> >
> > [1]
> >
> http://mail-archives.apache.org/mod_mbox/incubator-harmony-dev/200605.mbox/%3c906dd82e0605290601j5f8d43b7x59d1344cb819127f@mail.gmail.com%3e
> >
> >
> > ---------------------------------------------------------------------
> > Terms of use : http://incubator.apache.org/harmony/mailing.html
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> >
> >
>
> --
>
> Tim Ellison (t.p.ellison@gmail.com)
> IBM Java technology centre, UK.
>
> ---------------------------------------------------------------------
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>
>


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