Re: question regarding regression tests

Thank you.

On Fri, 2006-09-15 at 17:41 -0400, Alvaro Herrera wrote:
> Gevik Babakhani wrote:
> > Folks,
> > 
> > Could someone please provide information about how to create a correct
> > regression test?
> 
> Some information you can find on the PGXS docs:
> 
>    <para>
>     The scripts listed in the <varname>REGRESS</> variable are used for
>     regression testing of your module, just like <literal>make
>     installcheck</literal> is used for the main
>     <productname>PostgreSQL</productname> server.  For this to work you need
>     to have a subdirectory named <literal>sql/</literal> in your extension's
>     directory, within which you put one file for each group of tests you want
>     to run.  The files should have extension <literal>.sql</literal>, which
>     should not be included in the <varname>REGRESS</varname> list in the
>     makefile.  For each test there should be a file containing the expected
>     result in a subdirectory named <literal>expected/</literal>, with extension
>     <literal>.out</literal>.  The tests are run by executing <literal>make
>     installcheck</literal>, and the resulting output will be compared to the
>     expected files.  The differences will be written to the file
>     <literal>regression.diffs</literal> in <command>diff -c</command> format.
>     Note that trying to run a test which is missing the expected file will be
>     reported as <quote>trouble</quote>, so make sure you have all expected
>     files.
>    </para>
> 
> Note that not all of this applies to the backend regression tests, but
> it should help.  For the backend, you list the tests in the
> serial_schedule and parallel_schedule files.
>