30.1.1. Running the Tests Against a Temporary Installation

To run the parallel regression tests after building but before installation, type:

make check

in the top-level directory. (Or you can change tosrc/test/regress and run the command there.) At the end you should see something like:

======================= All 115 tests passed.=======================

or otherwise a note about which tests failed. SeeSection 30.2 below before assuming that a"failure" represents a serious problem.

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.

If you have configuredPostgreSQL to install into a location where an olderPostgreSQL installation already exists, and you performmake check 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 withconfigure --disable-rpath. It is not recommended that you use this option for the final installation, however.

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 apsql 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 theMAX_CONNECTIONS parameter. For example:

make MAX_CONNECTIONS=10 check

runs no more than ten tests concurrently.

30.1.2. Running the Tests Against an Existing Installation

To run the tests after installation (seeChapter 15), initialize a data area and start the server as explained inChapter 17, then type:

make installcheck

or for a parallel test:

make installcheck-parallel

The tests will expect to contact the server at the local host and the default port number, unless directed otherwise byPGHOST andPGPORT environment variables. The tests will be run in a database namedregression; any existing database by this name will be dropped. The tests will also transiently create some cluster-wide objects, such as user identities namedregressuserN.

30.1.3. Additional Test Suites

Themake check andmake installcheck commands run only the"core" regression tests, which test built-in functionality of thePostgreSQL server. The source distribution also contains additional test suites, most of them having to do with add-on functionality such as optional procedural languages.

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:

make check-worldmake installcheck-world

These commands run the tests using temporary servers or an already-installed server, respectively, just as previously explained formake check andmake installcheck. Other considerations are the same as previously explained for each method. Note thatmake check-world builds a separate temporary installation tree for each tested module, so it requires a great deal more time and disk space thanmake installcheck-world.

Alternatively, you can run individual test suites by typingmake check ormake installcheck in the appropriate subdirectory of the build tree. Keep in mind thatmake installcheck assumes you've installed the relevant module(s), not only the core server.

The additional tests that can be invoked this way include:

• Regression tests for optional procedural languages (other thanPL/pgSQL, which is tested by the core tests). These are located undersrc/pl.

• Regression tests forcontrib modules, located undercontrib. Not allcontrib modules have tests.

• Regression tests for the ECPG interface library, located insrc/interfaces/ecpg/test.

• Tests stressing behavior of concurrent sessions, located insrc/test/isolation.

• Tests of client programs undersrc/bin. See alsoSection 30.4.

When usinginstallcheck mode, these tests will destroy any existing databases namedpl_regression,contrib_regression,isolationtest,regress1, orconnectdb, as well asregression.

30.1.4. Locale and Encoding

By default, tests using a temporary installation use the locale defined in the current environment and the corresponding database encoding as determined byinitdb. It can be useful to test different locales by setting the appropriate environment variables, for example:

make check LANG=Cmake check LC_COLLATE=en_US.utf8 LC_CTYPE=fr_CA.utf8

For implementation reasons, settingLC_ALL does not work for this purpose; all the other locale-related environment variables do work.

When testing against an existing installation, the locale is determined by the existing database cluster and cannot be set separately for the test run.

You can also choose the database encoding explicitly by setting the variableENCODING, for example:

make check LANG=C ENCODING=EUC_JP

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.

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.

30.1.5. Extra Tests

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 variableEXTRA_TESTS. For example, to run thenumeric_big test:

make check EXTRA_TESTS=numeric_big

To run the collation tests:

make check EXTRA_TESTS=collate.linux.utf8 LANG=en_US.utf8

Thecollate.linux.utf8 test works only on Linux/glibc platforms, and only when run in a database that uses UTF-8 encoding.

30.1.6. Testing Hot Standby

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.

To run the Hot Standby tests, first create a database calledregression on the primary:

psql -h primary -c "CREATE DATABASE regression"

Next, run the preparatory scriptsrc/test/regress/sql/hs_primary_setup.sql on the primary in the regression database, for example:

psql -h primary -f src/test/regress/sql/hs_primary_setup.sql regression

Allow these changes to propagate to the standby.

Now arrange for the default database connection to be to the standby server under test (for example, by setting thePGHOST andPGPORT environment variables). Finally, runmake standbycheck in the regression directory:

cd src/test/regressmake standbycheck

Some extreme behaviors can also be generated on the primary using the scriptsrc/test/regress/sql/hs_primary_extremes.sql to allow the behavior of the standby to be tested.