Re: [PyGiNaC-users] strange behavior with the test suite

[Ondrej C. <on...@ce...>]

Yes, we created another ginac bindings in swig, swiginac.berlios.de, and we
have the same problems - they seem to be in ginac.

Ondrej

On Mon, Oct 03, 2005 at 08:27:02PM +0300, Matti Peltom=E4ki wrote:
>=20
> Hi,
>=20
> while playing around with pyginac, I found some strange behavior with
> the regression test suite. The reason to this behavior escapes me.=20
>=20
> When running ./run python2.3 bin/checkall.py most of the time=20
> everything goes ok, but every now and then an error occurs as follows.
>=20
> *****************************************************************
> Failure in example: exam_normal2()
> from line #1 of exam_normalization.exam_normal2
> Expected: 0
> Got:
> normal form of  (-y+x)**(-3)*(x**2-y**2)  returned  (y-x)**(-2)*(y+x)  wh=
ile=20
> it should be  (-y+x)**(-2)*(y+x)
> normal form of  (x**2-y**2)*(-1/2*y+1/2*x)**(-3)  returned =20
> (y-x)**(-2)*(8*y+8*x)  while it should be  (-y+x)**(-2)*(8*y+8*x)
> 2
> *****************************************************************
> 1 items had failures:
>    1 of   1 in exam_normalization.exam_normal2
> ***Test Failed*** 1 failures.
>=20
> To get an idea how often this happens, I ran the test 100 times, giving 4=
3=20
> fails and 57 clean passes. The interesting part is that when I run
>=20
> ./run python2.3 exam_normalization.py
>=20
> I am totally unable to reproduce the error above, leading to a guess that=
 this=20
> might have something to do with bin/checkall.py and/or the doctest module=
=2E=20
> However, I have not been able to point any other reason as to why this wo=
uld=20
> be so. I also checked with python 2.4 (Debian-packaged 2.4.1-2) with the =
same=20
> results.=20
>=20
> I am using an up-to-date cvs of PyGiNaC, GiNaC 1.3.2, boost.python 1.33.0,
> gcc 4.0.2 and python 2.3.5 (all of which except PyGiNaC are the=20
> Debian-packaged versions).=20
>=20
> So, does anybody have any idea? Can anyone else reproduce this?
>=20
> Best Regards,
> Matti
>=20
> --=20
> Matti Peltomaki, Graduate Student
> Laboratory of Physics=20
> Helsinki University of Technology
> 040 7576977, room Y308B
>=20
>=20
>=20
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