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Document PGXS' REGRESS feature.

This commit is contained in:
Alvaro Herrera 2005-11-29 01:46:54 +00:00
parent 9a39423436
commit 19fecee06e
1 changed files with 32 additions and 2 deletions
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34
doc/src/sgml/xfunc.sgml
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@ -1,5 +1,5 @@
<!--
$PostgreSQL: pgsql/doc/src/sgml/xfunc.sgml,v 1.108 2005/11/17 22:14:50 tgl Exp $
$PostgreSQL: pgsql/doc/src/sgml/xfunc.sgml,v 1.109 2005/11/29 01:46:54 alvherre Exp $
-->
<sect1 id="xfunc">
@ -2106,7 +2106,7 @@ include $(PGXS)
<term><varname>REGRESS</varname></term>
<listitem>
<para>
list of regression test cases (without suffix)
list of regression test cases (without suffix), see below
</para>
</listitem>
</varlistentry>
@ -2186,6 +2186,36 @@ include $(PGXS)
corresponds to the first <command>pg_config</command> command
found in your path.
</para>
<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>
<tip>
<para>
The easiest way of creating the expected files is creating empty files,
then carefully inspecting the result files after a test run (to be found
in the <literal>results/</literal> directory), and copying them to
<literal>expected/</literal> if they match what you want from the test.
</para>
</tip>
</sect2>