79 lines
3.1 KiB
PHP
79 lines
3.1 KiB
PHP
#
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# Originally created by John Embretsen, 2011-01-26.
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#
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# Checks for the existence of Perl modules DBI and DBD::mysql as seen from the
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# perl installation used by "external" executable perl scripts, i.e. scripts
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# that are executed as standalone scripts interpreted by the perl installation
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# specified by the "shebang" line in the top of these scripts.
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#
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# If either module is not found, the test will be skipped.
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#
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# For use in tests that call perl scripts that require these modules.
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#
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# This file is intended to work on Unix. Windows may need different treatment.
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# Reasoning:
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# - "shebangs" are not relevant on Windows, but need to be handled here.
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# - Perl scripts cannot be made executable on Windows, interpreter must be
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# specified.
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#
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# Note that if there are multiple perl installations and not all have the
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# required modules, this check may fail even if the perl in path does have
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# the modules available. This may happen if the perl specified by the script's
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# shebang (e.g. #!/usr/bin/perl) does not have these modules, and script is
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# called without specifying the perl interpreter. However, this will be
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# a correct result in cases where a test calls a script with a similar shebang.
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#
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################################################################################
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--source include/not_windows.inc
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# We jump through some hoops since there is no direct way to check if an
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# external command went OK or not from a mysql-test file:
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#
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# - In theory, we could do as simple as "exec perl -MDBI -MDBD::mysql -e 1",
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# however we cannot check the result (exit code) from within a test script.
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# Also, this may not yield the same result as other uses of perl due to the
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# shebang issue mentioned above.
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# - Instead we use a separate helper perl script that checks for the modules.
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# - If the modules are found, the perl script leaves a file which sets a
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# variable that can be read by this file.
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# If the modules are not found, the perl script does not set this variable,
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# but leaves an empty file instead.
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#
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# This is done because there is apparently no direct way to transfer
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# information from perl to the test script itself.
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--disable_query_log
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--disable_result_log
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--disable_warnings
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# We do not use embedded perl in this script because that would not have yielded
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# correct results for a situation where an external Perl script is called like
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# "scriptname" instead of "perl scriptname" and the shebang in the script points
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# to a specific perl that may be different than the perl in PATH.
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#
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# Instead, we call a separate helper script which checks for the modules in its
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# own environment. We call it without "perl" in front.
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--let $perlChecker= $MYSQLTEST_VARDIR/std_data/checkDBI_DBD-mysql.pl
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--let $resultFile= $MYSQL_TMP_DIR/dbidbd-mysql.txt
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# Make the script executable and execute it.
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--chmod 0755 $perlChecker
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--exec $perlChecker
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# Source the resulting temporary file and look for a variable being set.
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--source $resultFile
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if (!$dbidbd) {
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--skip Test needs Perl modules DBI and DBD::mysql
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}
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# Clean up
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--remove_file $resultFile
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--enable_query_log
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--enable_result_log
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--enable_warnings
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