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><H1
CLASS="SECT1"
><A
NAME="REGRESS-RUN"
>30.1. Running the Tests</A
></H1
><P
> The regression tests can be run against an already installed and
running server, or using a temporary installation within the build
tree. Furthermore, there is a <SPAN
CLASS="QUOTE"
>"parallel"</SPAN
> and a
<SPAN
CLASS="QUOTE"
>"sequential"</SPAN
> mode for running the tests. The
sequential method runs each test script alone, while the
parallel method starts up multiple server processes to run groups
of tests in parallel. Parallel testing adds confidence that
interprocess communication and locking are working correctly.
</P
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN38006"
>30.1.1. Running the Tests Against a Temporary Installation</A
></H2
><P
> To run the parallel regression tests after building but before installation,
type:
</P><PRE
CLASS="SCREEN"
>gmake check</PRE
><P>
in the top-level directory. (Or you can change to
<TT
CLASS="FILENAME"
>src/test/regress</TT
> and run the command there.)
At the end you should see something like:
</P><PRE
CLASS="SCREEN"
><SAMP
CLASS="COMPUTEROUTPUT"
>=======================
All 115 tests passed.
=======================</SAMP
></PRE
><P>
or otherwise a note about which tests failed. See <A
HREF="regress-evaluation.html"
>Section 30.2</A
> below before assuming that a
<SPAN
CLASS="QUOTE"
>"failure"</SPAN
> represents a serious problem.
</P
><P
> Because this test method runs a temporary server, it will not work
if you did the build as the root user, since the server will not start as
root. Recommended procedure is not to do the build as root, or else to
perform testing after completing the installation.
</P
><P
> If you have configured <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
> to install
into a location where an older <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
>
installation already exists, and you perform <TT
CLASS="LITERAL"
>gmake check</TT
>
before installing the new version, you might find that the tests fail
because the new programs try to use the already-installed shared
libraries. (Typical symptoms are complaints about undefined symbols.)
If you wish to run the tests before overwriting the old installation,
you'll need to build with <TT
CLASS="LITERAL"
>configure --disable-rpath</TT
>.
It is not recommended that you use this option for the final installation,
however.
</P
><P
> The parallel regression test starts quite a few processes under your
user ID. Presently, the maximum concurrency is twenty parallel test
scripts, which means forty processes: there's a server process and a
<SPAN
CLASS="APPLICATION"
>psql</SPAN
> process for each test script.
So if your system enforces a per-user limit on the number of processes,
make sure this limit is at least fifty or so, else you might get
random-seeming failures in the parallel test. If you are not in
a position to raise the limit, you can cut down the degree of parallelism
by setting the <TT
CLASS="LITERAL"
>MAX_CONNECTIONS</TT
> parameter. For example:
</P><PRE
CLASS="SCREEN"
>gmake MAX_CONNECTIONS=10 check</PRE
><P>
runs no more than ten tests concurrently.
</P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN38025"
>30.1.2. Running the Tests Against an Existing Installation</A
></H2
><P
> To run the tests after installation (see <A
HREF="installation.html"
>Chapter 15</A
>),
initialize a data area and start the
server as explained in <A
HREF="runtime.html"
>Chapter 17</A
>, then type:
</P><PRE
CLASS="SCREEN"
>gmake installcheck</PRE
><P>
or for a parallel test:
</P><PRE
CLASS="SCREEN"
>gmake installcheck-parallel</PRE
><P>
The tests will expect to contact the server at the local host and the
default port number, unless directed otherwise by <TT
CLASS="ENVAR"
>PGHOST</TT
> and
<TT
CLASS="ENVAR"
>PGPORT</TT
> environment variables. The tests will be run in a
database named <TT
CLASS="LITERAL"
>regression</TT
>; any existing database by this name
will be dropped.
The tests will also transiently create some cluster-wide objects, such as
user identities named <TT
CLASS="LITERAL"
>regressuser<TT
CLASS="REPLACEABLE"
><I
>N</I
></TT
></TT
>.
</P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN38037"
>30.1.3. Additional Test Suites</A
></H2
><P
> The <TT
CLASS="LITERAL"
>gmake check</TT
> and <TT
CLASS="LITERAL"
>gmake installcheck</TT
> commands
run only the <SPAN
CLASS="QUOTE"
>"core"</SPAN
> regression tests, which test built-in
functionality of the <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
> server. The source
distribution also contains additional test suites, most of them having
to do with add-on functionality such as optional procedural languages.
</P
><P
> To run all test suites applicable to the modules that have been selected
to be built, including the core tests, type one of these commands at the
top of the build tree:
</P><PRE
CLASS="SCREEN"
>gmake check-world
gmake installcheck-world</PRE
><P>
These commands run the tests using temporary servers or an
already-installed server, respectively, just as previously explained
for <TT
CLASS="LITERAL"
>gmake check</TT
> and <TT
CLASS="LITERAL"
>gmake installcheck</TT
>. Other
considerations are the same as previously explained for each method.
Note that <TT
CLASS="LITERAL"
>gmake check-world</TT
> builds a separate temporary
installation tree for each tested module, so it requires a great deal
more time and disk space than <TT
CLASS="LITERAL"
>gmake installcheck-world</TT
>.
</P
><P
> Alternatively, you can run individual test suites by typing
<TT
CLASS="LITERAL"
>gmake check</TT
> or <TT
CLASS="LITERAL"
>gmake installcheck</TT
> in the appropriate
subdirectory of the build tree. Keep in mind that <TT
CLASS="LITERAL"
>gmake
installcheck</TT
> assumes you've installed the relevant module(s), not
only the core server.
</P
><P
> The additional tests that can be invoked this way include:
</P
><P
></P
><UL
><LI
><P
> Regression tests for optional procedural languages (other than
<SPAN
CLASS="APPLICATION"
>PL/pgSQL</SPAN
>, which is tested by the core tests).
These are located under <TT
CLASS="FILENAME"
>src/pl</TT
>.
</P
></LI
><LI
><P
> Regression tests for <TT
CLASS="FILENAME"
>contrib</TT
> modules,
located under <TT
CLASS="FILENAME"
>contrib</TT
>.
Not all <TT
CLASS="FILENAME"
>contrib</TT
> modules have tests.
</P
></LI
><LI
><P
> Regression tests for the ECPG interface library,
located in <TT
CLASS="FILENAME"
>src/interfaces/ecpg/test</TT
>.
</P
></LI
><LI
><P
> Tests stressing behavior of concurrent sessions,
located in <TT
CLASS="FILENAME"
>src/test/isolation</TT
>.
</P
></LI
></UL
><P
> When using <TT
CLASS="LITERAL"
>installcheck</TT
> mode, these tests will destroy any
existing databases named <TT
CLASS="LITERAL"
>pl_regression</TT
>,
<TT
CLASS="LITERAL"
>contrib_regression</TT
>, <TT
CLASS="LITERAL"
>isolationtest</TT
>,
<TT
CLASS="LITERAL"
>regress1</TT
>, or <TT
CLASS="LITERAL"
>connectdb</TT
>, as well as
<TT
CLASS="LITERAL"
>regression</TT
>.
</P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN38079"
>30.1.4. Locale and Encoding</A
></H2
><P
> By default, tests using a temporary installation use the
locale defined in the current environment and the corresponding
database encoding as determined by <TT
CLASS="COMMAND"
>initdb</TT
>. It
can be useful to test different locales by setting the appropriate
environment variables, for example:
</P><PRE
CLASS="SCREEN"
>gmake check LANG=C
gmake check LC_COLLATE=en_US.utf8 LC_CTYPE=fr_CA.utf8</PRE
><P>
For implementation reasons, setting <TT
CLASS="ENVAR"
>LC_ALL</TT
> does not
work for this purpose; all the other locale-related environment
variables do work.
</P
><P
> When testing against an existing installation, the locale is
determined by the existing database cluster and cannot be set
separately for the test run.
</P
><P
> You can also choose the database encoding explicitly by setting
the variable <TT
CLASS="ENVAR"
>ENCODING</TT
>, for example:
</P><PRE
CLASS="SCREEN"
>gmake check LANG=C ENCODING=EUC_JP</PRE
><P>
Setting the database encoding this way typically only makes sense
if the locale is C; otherwise the encoding is chosen automatically
from the locale, and specifying an encoding that does not match
the locale will result in an error.
</P
><P
> The database encoding can be set for tests against either a temporary or
an existing installation, though in the latter case it must be
compatible with the installation's locale.
</P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN38090"
>30.1.5. Extra Tests</A
></H2
><P
> The core regression test suite contains a few test files that are not
run by default, because they might be platform-dependent or take a
very long time to run. You can run these or other extra test
files by setting the variable <TT
CLASS="ENVAR"
>EXTRA_TESTS</TT
>. For
example, to run the <TT
CLASS="LITERAL"
>numeric_big</TT
> test:
</P><PRE
CLASS="SCREEN"
>gmake check EXTRA_TESTS=numeric_big</PRE
><P>
To run the collation tests:
</P><PRE
CLASS="SCREEN"
>gmake check EXTRA_TESTS=collate.linux.utf8 LANG=en_US.utf8</PRE
><P>
The <TT
CLASS="LITERAL"
>collate.linux.utf8</TT
> test works only on Linux/glibc
platforms, and only when run in a database that uses UTF-8 encoding.
</P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN38098"
>30.1.6. Testing Hot Standby</A
></H2
><P
> The source distribution also contains regression tests for the static
behavior of Hot Standby. These tests require a running primary server
and a running standby server that is accepting new WAL changes from the
primary (using either file-based log shipping or streaming replication).
Those servers are not automatically created for you, nor is replication
setup documented here. Please check the various sections of the
documentation devoted to the required commands and related issues.
</P
><P
> To run the Hot Standby tests, first create a database
called <TT
CLASS="LITERAL"
>regression</TT
> on the primary:
</P><PRE
CLASS="SCREEN"
>psql -h primary -c "CREATE DATABASE regression"</PRE
><P>
Next, run the preparatory script
<TT
CLASS="FILENAME"
>src/test/regress/sql/hs_primary_setup.sql</TT
>
on the primary in the regression database, for example:
</P><PRE
CLASS="SCREEN"
>psql -h primary -f src/test/regress/sql/hs_primary_setup.sql regression</PRE
><P>
Allow these changes to propagate to the standby.
</P
><P
> Now arrange for the default database connection to be to the standby
server under test (for example, by setting the <TT
CLASS="ENVAR"
>PGHOST</TT
> and
<TT
CLASS="ENVAR"
>PGPORT</TT
> environment variables).
Finally, run <TT
CLASS="LITERAL"
>gmake standbycheck</TT
> in the regression directory:
</P><PRE
CLASS="SCREEN"
>cd src/test/regress
gmake standbycheck</PRE
><P>
</P
><P
> Some extreme behaviors can also be generated on the primary using the
script <TT
CLASS="FILENAME"
>src/test/regress/sql/hs_primary_extremes.sql</TT
>
to allow the behavior of the standby to be tested.
</P
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