Re: question regarding regression tests

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,
justlike <literal>make   installcheck</literal> is used for the main   <productname>PostgreSQL</productname> server.
Forthis to work you need   to have a subdirectory named <literal>sql/</literal> in your extension's   directory, within
whichyou 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
eachtest there should be a file containing the expected   result in a subdirectory named <literal>expected/</literal>,
withextension   <literal>.out</literal>.  The tests are run by executing <literal>make   installcheck</literal>, and
theresulting 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
missingthe 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.

-- 
Alvaro Herrera                                http://www.CommandPrompt.com/
The PostgreSQL Company - Command Prompt, Inc.