NAME Test::DependentModules - Test all modules which depend on your module SYNOPSIS use Test::DependentModules qw( test_all_my_deps ); test_all_my_deps('My::Module'); # or ... use Test::DependentModules qw( test_module ); use Test::More tests => 3; test_module('Exception::Class'); test_module('DateTime'); test_module('Log::Dispatch'); DESCRIPTION WARNING: The tests this module does should never be included as part of a normal CPAN install! This module is intended as a tool for module authors who would like to easily test that a module release will not break dependencies. This is particularly useful for module authors (like myself) who have modules which are a dependency of many other modules. How It Works Internally, this module will download dependencies from CPAN and run their tests. If those dependencies in turn have unsatisfied dependencies, they are installed into a temporary directory. These second-level (and third-, etc) dependencies are *not* tested. In order to avoid prompting, this module attempts set `$ENV{PERL_AUTOINSTALL}' to `--defaultdeps' and sets `$ENV{PERL_MM_USE_DEFAULT}' to a true value. Nonetheless, some ill-behaved modules will *still* wait for a prompt. Unfortunately, because of the way this module attempts to keep output to a minimum, you won't see these prompts. Patches are welcome. FUNCTIONS This module optionally exports two functions: test_all_my_deps( $module, { exclude => qr/.../ } ) Given a module name, this function uses `CPANDB' to find all its dependencies and test them. It will call the `plan()' function from Test::More for you. If you want to exclude some dependencies, you can pass a regex which will be used to exclude any matching distributions. Note that this will be tested against the *distribution name*, which will be something like "Test-DependentModules" (note the lack of colons). Additionally, any distribution name starting with "Task" or "Bundle" is always excluded. test_module($name) Given a module name, this function will test it. You can use this if you'd prefer to hard code a list of modules to test. In this case, you will have to handle your own test planning. PERL5LIB FOR DEPENDENCIES If you want to include a module-to-be-released in the path seen by dependencies, you must make sure that the correct path ends up in `$ENV{PERL5LIB}'. If you use `prove -l' or `prove -b' to run tests, then that will happen automatically. WARNINGS, LOGGING AND VERBOSITY By default, this module attempts to quiet down CPAN and the module building toolchain as much as possible. However, when there are test failures in a dependency it's nice to see the output. In addition, if the tests spit out warnings but still pass, this will just be treated as a pass. If you enable logging, this module log all successes, warnings, and failures, along with the full output of the test suite for each dependency. In addition, it logs what prereqs it installs, since you may want to install some of them permanently to speed up future tests. To enable logging, you must provide a directory to which log files will be written. The log file names are of the form `test-my-deps-$$-$type.log', where `$type' is one of "status", "error", or "prereq". The directory should be provided in `$ENV{PERL_TEST_DM_LOG_DIR}'. The directory must already exist. You also can enable CPAN's output by setting the `$ENV{PERL_TEST_DM_CPAN_VERBOSE}' variable to a true value. BUGS Please report any bugs or feature requests to `bug-test-mydeps@rt.cpan.org', or through the web interface at http://rt.cpan.org. I will be notified, and then you'll automatically be notified of progress on your bug as I make changes. DONATIONS If you'd like to thank me for the work I've done on this module, please consider making a "donation" to me via PayPal. I spend a lot of free time creating free software, and would appreciate any support you'd care to offer. Please note that I am not suggesting that you must do this in order for me to continue working on this particular software. I will continue to do so, inasmuch as I have in the past, for as long as it interests me. Similarly, a donation made in this way will probably not make me work on this software much more, unless I get so many donations that I can consider working on free software full time, which seems unlikely at best. To donate, log into PayPal and send money to autarch@urth.org or use the button on this page: http://www.urth.org/~autarch/fs-donation.html AUTHOR Dave Rolsky, COPYRIGHT & LICENSE Copyright 2009 Dave Rolsky, All Rights Reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.