Test::Env - test the environment
env_ok(NAME, VALUE)
Test::Exception provides routines to report whether code lives or dies, and whether code throws the correct exceptions
dies_ok {$foo->method1} 'expecting to die';
lives_ok {$foo->method2} 'expecting to live';
Test::File - test file attributes
file_exists_ok( FILENAME [, NAME ] )
file_readable_ok( FILENAME [, NAME ] )
...
Test::Data - test functions for particular variable types
blessed_ok( SCALAR ) # Ok if the SCALAR is a
# blessed reference.
weak_ok( SCALAR ) # Ok if the SCALAR is a weak
# reference.
array_multiple_ok( ITEM, ARRAY [, NAME] ) # Ok if more than
# one element of
# ARRAY is ITEM.
Test::Differences - Test strings and data structures and show differences if not ok
