NAME

       Test::Exports - Test that modules export the right symbols

SYNOPSIS

           use Test::More;
           use Test::Exports;

           require_ok "My::Module" or BAIL_OUT "can't load module";

           import_ok "My::Module", [],             "default import OK";
           is_import qw/foo bar/, "My::Module",    "imports subs";

           new_import_pkg;

           import_ok "My::Module", ["foo"],        "named import OK";
           is_import "foo", "My::Module",          "imports foo";
           cant_ok "bar",                          "doesn't import bar";

DESCRIPTION

       This module provides simple test functions for testing other modules' "import" methods.
       Testing is currently limited to checking which subs have been imported.

       In order to keep different calls to "->import" separate, Test::Exports performs these
       calls from a private package. The symbol-testing functions then test whether or not
       symbols are present in this private package, ensuring none of this interferes with your
       test script itself.

FUNCTIONS

       These are all exported by default, as is usual with testing modules.

   "new_import_pkg"
       Create a new package to perform imports into. This is useful when you want to test
       "->import" with different arguments: otherwise you'd need to find some way of going back
       and clearing up the imports from the last call.

       This returns the name of the new package (which will look like "Test::Exports::TestAAAAB")
       in case you need it.

   "import_ok $module, \@args, $name"
       Call "$module->import" from the current testing package, passing @args, and check the call
       succeeded. 'Success' means not throwing an exception: "use" doesn't care if "import"
       returns false, so neither do we.

       @args defaults to the empty list; $name defaults to something sensible.

   "import_nok $module, \@args, $name"
       Call "$module->import(@args)" and expect it to throw an exception.  Defaults as for
       "import_ok".

   "is_import @subs, $module, $name"
       For each name in @subs, check that the current testing package has a sub by that name and
       that it is the same as the equinominal sub in the $module package.

       Neither $module nor $name are optional.

   "cant_ok @subs, $name"
       For each sub in @subs, check that a sub of that name does not exist in the current testing
       package. If one is found the diagnostic will indicate where it was originally defined, to
       help track down the stray export.

TODO

   "is_import"
       Currently this just checks that "\&Our::Pkg::sub == \&Your::Pkg::sub", which means

       •   it is impossible to test for exports which have been renamed, and

       •   we can't be sure the sub originally came from Your::Pkg: it may have been exported
           into both packages from somewhere else.

       It would be good to fix at least the former.

AUTHOR

       Ben Morrow <ben@morrow.me.uk>

BUGS

       Please report any bugs to <bug-Test-Exports@rt.cpan.org>.

COPYRIGHT

       Copyright 2010 Ben Morrow.

       Redistribution and use in source and binary forms, with or without modification, are
       permitted provided that the following conditions are met:

       •   Redistributions of source code must retain the above copyright notice, this list of
           conditions and the following disclaimer.

       •   Redistributions in binary form must reproduce the above copyright notice, this list of
           conditions and the following disclaimer in the documentation and/or other materials
           provided with the distribution.

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