[Proj] Testing framework

[Mateusz Loskot]

Kristian, as you know, I've been considering PROJ API tests.
I assumed it would must be in C, so an obvious choice was cunit (as used in
PostGIS for instance). I haven't arrived with anything though.

It's just a comment, not recommendation to stick with C and cunit.

Mateusz Loskot, mateusz at loskot.net
(Sent from mobile)

On Tue, 29 May 2018, 19:26 Kristian Evers, <kreve at sdfe.dk> wrote:

> Even,
>
> Your timing is perfect. I was literally just typing up a long email about
> improving
> the test situation in PROJ right now! I was going to propose a larger
> restructuring
> of the tests we already have as well as adding a dedicated testing
> framework for
> testing API functions etc. You’ve taken care of the latter and most
> pressing issue.
> I’ll address the rest of my proposal at a later time I think.
>
> I have only looked briefly at catch2 but it seems good to me. I am happy
> that you’ve
> put your tests in test/.
>
> /Kristian
>
> > On 29 May 2018, at 19:15, Even Rouault <even.rouault at spatialys.com>
> wrote:
> >
> > Hi,
> >
> > I was researching a framework to test my new code (and that could also
> be used
> > to test the existing C API if needed). Currently src/gie.c has ad-hoc
> testing,
> > but it is really limited feature-wise: no nice error message (returns
> error
> > code), no way to make a testcase go on even if a test check fails, etc...
> >
> > So a dedicated framework seems a better idea, and I've found catch2 :
> >       https://github.com/catchorg/Catch2/blob/master/docs/Readme.md
> >
> > One of its main feature it is a header only testing framework, which
> means we
> > can embed it easily in proj source tree, which is practical compared to
> other
> > frameworks I've considered ( googletest, cppunit,  etc... ).
> > The tut framework used by GDAL and GEOS
> > ( http://mrzechonek.github.io/tut-framework ) would also enter this
> category
> > of header(s) only, but it has not as much as activity than catch2.
> > There's also Boost.Test, but I was a bit afraid with the boost name in
> it
> > (although apparently it has a standalone mode).
> >
> > Example of tests I've just written with catch2 (just a minimalistic use
> of the
> > testing framework)
> >
> https://github.com/rouault/proj.4/blob/iso19111_ptr/test/cpp/test_crs.cpp
> >
> > I'm not particularly calling for a flame debate on the suject, just
> wanting to
> > mention this finding.
> >
> > Even
> >
> > --
> > Spatialys - Geospatial professional services
> > http://www.spatialys.com
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