NAME Test::Block - specify fine granularity test plans SYNOPSIS use Test::More 'no_plan'; use Test::Block qw($Plan); { # This block should run exactly two tests local $Plan = 2; pass 'first test'; # oops. forgot second test }; SKIP: { local $Plan = 3; pass('first test in second block'); skip "skip remaining tests" => $Plan; }; ok( Test::Block->all_in_block, 'all test run in blocks' ); is( Test::Block->block_count, 2, 'two blocks ran' ); # This produces... ok 1 - first test not ok 2 - block expected 2 test(s) and ran 1 # Failed test (foo.pl at line 6) ok 3 - first test in second block ok 4 # skip skip remaining tests ok 5 # skip skip remaining tests ok 6 - all test run in blocks ok 7 - two blocks ran 1..7 # Looks like you failed 1 tests of 7. DESCRIPTION This module allows you to specify the number of expected tests at a finer level of granularity than an entire test script. It is built with Test::Builder and plays happily with Test::More and friends. If you are not already familiar with Test::More now would be the time to go take a look. Creating test blocks Test::Block supplies a special variable $Plan that you can localize to specify the number of tests in a block like this: use Test::More 'no_plan'; use Test::Block qw($Plan); { local $Plan = 2; pass('first test'); pass('second test'); }; What if the block runs a different number of tests? If a block doesn't run the number of tests specified in $Plan then Test::Block will automatically produce a failing test. For example: { local $Plan = 2; pass('first test'); # oops - forgot second test }; will output ok 1 - first test not ok 2 - block 1 expected 2 test(s) and ran 1 Tracking the number of remaining tests During the execution of a block $Plan will contain the number of remaining tests that are expected to run so: { local $Plan = 2; diag "$Plan tests to run"; pass('first test'); diag "$Plan tests to run"; pass('second test'); diag "$Plan tests to run"; }; will produce # 2 tests to run ok 1 - first test # 1 tests to run ok 2 - second test # 0 tests to run This can make skip blocks easier to write and maintain, for example: SKIP: { local $Plan = 5; pass('first test'); pass('second test'); skip "debug tests" => $Plan unless DEBUG > 0; pass('third test'); pass('fourth test'); skip "high level debug tests" => $Plan unless DEBUG > 2; pass('fifth test'); }; Named blocks To make debugging easier you can give your blocks an optional name like this: { local $Plan = { example => 2 }; pass('first test'); # oops - forgot second test }; which would output ok 1 - first test not ok 2 - block example expected 2 test(s) and ran 1 Test::Block objects The $Plan is implemented using a tied variable that stores and retrieves Test::Block objects. If you want to avoid the tied interface you can use Test::Block objects directly. plan # create a block expecting 4 tests my $block = Test::Block->plan(4); # create a named block with two tests my $block = Test::Block->plan('test name' => 2); You create Test::Block objects with the "plan" method. When the object is destroyed it outputs a failing test if the expected number of tests have not run. remaining You can find out the number of remaining tests in the block by calling the "remaining" method on the object. Test::Block objects overload "" and "0+" to return the result of the remaining method. builder Returns Test::Builder object used by Test::Block. For example: Test::Block->builder->skip('skip a test'); See Test::Builder for more information. block_count A class method that returns the number of blocks that have been created. You can use this to check that the expected number of blocks have run by doing something like: is( Test::Block->block_count, 5, 'five blocks run' ); at the end of your test script. all_in_block Returns true if all tests so far run have been inside the scope of a Test::Block object. ok( Test::Block->all_in_block, 'all tests run in blocks' ); BUGS None known at the time of writing. If you find any please let me know by e-mail, or report the problem with . TO DO Nothing at the time of writing. If you think this module should do something that it doesn't do at the moment please let me know. ACKNOWLEGEMENTS Thanks to chromatic and Michael G Schwern for the excellent Test::Builder, without which this module wouldn't be possible. Thanks to Michael G Schwern and Tony Bowden for the mails on perl-qa@perl.org that sparked the idea for this module. Thanks to Fergal Daly for suggesting named blocks. Thanks to Michael G Schwern for suggesting $Plan. AUTHOR Adrian Howard If you can spare the time, please drop me a line if you find this module useful. SEE ALSO Test::Builder Support module for building test libraries. Test::Simple & Test::More Basic utilities for writing tests. Overview of some of the many testing modules available on CPAN. LICENCE Copyright 2003-2004 Adrian Howard, All Rights Reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.