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<chapter id="regress">

<title id="regress-title">Regression Tests</title>

default port number, unless directed otherwise by <envar>PGHOST</envar> and

<envar>PGPORT</envar> environment variables.

</para>

<para>

The source distribution also contains regression tests for the optional

procedural languages and for some of the <filename>contrib</> modules.

At present, these tests can be used only against an already-installed

server. To run the tests for all procedural languages that have been

built and installed, change to the <filename>src/pl</> directory of the

build tree and type

<screen>

gmake installcheck

</screen>

You can also do this in any of the subdirectories of <filename>src/pl</>

to run tests for just one procedural language. To run the tests for all

<filename>contrib</> modules that have them, change to the

<filename>contrib</> directory of the build tree and type

<screen>

gmake installcheck

</screen>

The <filename>contrib</> modules must have been built and installed first.

You can also do this in a subdirectory of <filename>contrib</> to run

the tests for just one module.

</para>

</sect1>

<sect1 id="regress-evaluation">