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Regression Test Procedure

Commands were tested on RedHat Linux version 4.2 using the bash shell. Except where noted, they will probably work on most systems. Commands like ps and tar vary wildly on what options you should use on each platform. Use common sense before typing in these commands.

Postgres Regression Test

  1. Prepare the files needed for the regression test with:

               cd /usr/src/pgsql/src/test/regress
                gmake clean
                gmake all
              
    
    You can skip "gmake clean" if this is the first time you are running the tests.

    This step compiles a C program with PostgreSQL extension functions into a shared library. Localized SQL scripts and output-comparison files are also created for the tests that need them. The localization replaces macros in the source files with absolute pathnames and user names.

  2. If you intend to use the "sequential" test procedure, which tests an already-installed postmaster, be sure that the postmaster is running. If it isn't already running, start the postmaster in an available window by typing

               postmaster
              
    
    or start the postmaster daemon running in the background by typing
               cd
                nohup postmaster > regress.log 2>&1 &
              
    
    The latter is probably preferable, since the regression test log will be quite lengthy (60K or so, in Postgres 7.0) and you might want to review it for clues if things go wrong.

    Note: Do not run postmaster from the root account.

  3. Run the regression tests. For a sequential test, type

               cd /usr/src/pgsql/src/test/regress
                gmake runtest
              
    
    For a parallel test, type
               cd /usr/src/pgsql/src/test/regress
                gmake runcheck
              
    
    The sequential test just runs the test scripts using your already-running postmaster. The parallel test will perform a complete installation of Postgres into a temporary directory, start a private postmaster therein, and then run the test scripts. Finally it will kill the private postmaster (but the temporary directory isn't removed automatically).
  4. You should get on the screen (and also written to file ./regress.out) a series of statements stating which tests passed and which tests failed. Please note that it can be normal for some of the tests to "fail" due to platform-specific variations. See the next section for details on determining whether a "failure" is significant.

    Some of the tests, notably "numeric", can take a while, especially on slower platforms. Have patience.

  5. After running the tests and examining the results, type

               cd /usr/src/pgsql/src/test/regress
                gmake clean
              
    
    to recover the temporary disk space used by the tests. If you ran a sequential test, also type
               dropdb regression
              
    
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