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Test::Harness(3) Perl Programmers Reference GuideTest::Harness(3)

NAME
       Test::Harness - run perl standard test scripts with
       statistics

SYNOPSIS
       use Test::Harness;

       runtests(@tests);

DESCRIPTION
       (By using the the Test manpage module, you can write test
       scripts without knowing the exact output this module
       expects.	 However, if you need to know the specifics, read
       on!)

       Perl test scripts print to standard output "ok N" for each
       single test, where N is an increasing sequence of
       integers. The first line output by a standard test script
       is "1..M" with M being the number of tests that should be
       run within the test script.
       Test::Harness::runtests(@tests) runs all the testscripts
       named as arguments and checks standard output for the
       expected "ok N" strings.

       After all tests have been performed, runtests() prints
       some performance statistics that are computed by the
       Benchmark module.

       The test script output

       Any output from the testscript to standard error is
       ignored and bypassed, thus will be seen by the user. Lines
       written to standard output containing /^(not\s+)?ok\b/ are
       interpreted as feedback for runtests().	All other lines
       are discarded.

       It is tolerated if the test numbers after ok are omitted.
       In this case Test::Harness maintains temporarily its own
       counter until the script supplies test numbers again. So
       the following test script

	   print <<END;
	   1..6
	   not ok
	   ok
	   not ok
	   ok
	   ok
	   END

       will generate

	   FAILED tests 1, 3, 6
	   Failed 3/6 tests, 50.00% okay

16/Sep/1999	       perl 5.005, patch 03			1

Test::Harness(3) Perl Programmers Reference GuideTest::Harness(3)

       The global variable $Test::Harness::verbose is exportable
       and can be used to let runtests() display the standard
       output of the script without altering the behavior
       otherwise.

       The global variable $Test::Harness::switches is exportable
       and can be used to set perl command line options used for
       running the test script(s). The default value is -w.

       If the standard output line contains substring  # Skip
       (with variations in spacing and case) after ok or ok
       NUMBER, it is counted as a skipped test.	 If the whole
       testscript succeeds, the count of skipped tests is
       included in the generated output.

EXPORT
       &runtests is exported by Test::Harness per default.

DIAGNOSTICS
       All tests successful.\nFiles=%d,	 Tests=%d, %s
	   If all tests are successful some statistics about the
	   performance are printed.

       FAILED tests %s\n\tFailed %d/%d tests, %.2f%% okay.
	   For any single script that has failing subtests
	   statistics like the above are printed.

       Test returned status %d (wstat %d)
	   Scripts that return a non-zero exit status, both $? >>
	   8 and $? are printed in a message similar to the
	   above.

       Failed 1 test, %.2f%% okay. %s

       Failed %d/%d tests, %.2f%% okay. %s
	   If not all tests were successful, the script dies with
	   one of the above messages.

ENVIRONMENT
       Setting HARNESS_IGNORE_EXITCODE makes harness ignore the
       exit status of child processes.

       If HARNESS_FILELEAK_IN_DIR is set to the name of a
       directory, harness will check after each test whether new
       files appeared in that directory, and report them as

	 LEAKED FILES: scr.tmp 0 my.db

       If relative, directory name is with respect to the current
       directory at the moment runtests() was called.  Putting
       absolute path into HARNESS_FILELEAK_IN_DIR may give more
       predicatable results.

16/Sep/1999	       perl 5.005, patch 03			2

Test::Harness(3) Perl Programmers Reference GuideTest::Harness(3)

SEE ALSO
       the Test manpage for writing test scripts and also the
       Benchmark manpage for the underlying timing routines.

AUTHORS
       Either Tim Bunce or Andreas Koenig, we don't know. What we
       know for sure is, that it was inspired by Larry Wall's
       TEST script that came with perl distributions for ages.
       Numerous anonymous contributors exist. Current maintainer
       is Andreas Koenig.

BUGS
       Test::Harness uses $^X to determine the perl binary to run
       the tests with. Test scripts running via the shebang (#!)
       line may not be portable because $^X is not consistent for
       shebang scripts across platforms. This is no problem when
       Test::Harness is run with an absolute path to the perl
       binary or when $^X can be found in the path.

16/Sep/1999	       perl 5.005, patch 03			3

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