Test::Strict(3) Check syntax, presence of use strict; and test coverage

VERSION

Version 0.36

SYNOPSIS

"Test::Strict" lets you check the syntax, presence of "use strict;" and presence "use warnings;" in your perl code. It report its results in standard Test::Simple fashion:


use Test::Strict tests => 3;
syntax_ok( 'bin/myscript.pl' );
strict_ok( 'My::Module', "use strict; in My::Module" );
warnings_ok( 'lib/My/Module.pm' );

Module authors can include the following in a t/strict.t and have "Test::Strict" automatically find and check all perl files in a module distribution:

  use Test::Strict;
  all_perl_files_ok(); # Syntax ok and use strict;

or

    use Test::Strict;
    all_perl_files_ok( @mydirs );

"Test::Strict" can also enforce a minimum test coverage the test suite should reach. Module authors can include the following in a t/cover.t and have "Test::Strict" automatically check the test coverage:

    use Test::Strict;
    all_cover_ok( 80 );  # at least 80% coverage

or

    use Test::Strict;
    all_cover_ok( 80, 't/' );

DESCRIPTION

The most basic test one can write is ``does it compile ?''. This module tests if the code compiles and play nice with Test::Simple modules.

Another good practice this module can test is to ``use strict;'' in all perl files.

By setting a minimum test coverage through "all_cover_ok()", a code author can ensure his code is tested above a preset level of kwality throughout the development cycle.

Along with Test::Pod, this module can provide the first tests to setup for a module author.

This module should be able to run under the -T flag for perl >= 5.6. All paths are untainted with the following pattern: "qr|^([[email protected]\w./:\\]+)$|" controlled by $Test::Strict::UNTAINT_PATTERN.

FUNCTIONS

syntax_ok( $file [, $text] )

Run a syntax check on $file by running "perl -c $file" with an external perl interpreter. The external perl interpreter path is stored in $Test::Strict::PERL which can be modified. You may prefer "use_ok()" from Test::More to syntax test a module. For a module, the path (lib/My/Module.pm) or the name (My::Module) can be both used.

strict_ok( $file [, $text] )

Check if $file contains a "use strict;" statement. "use Moose" and "use Mouse" are also considered valid. use Modern::Perl is also accepted.

This is a pretty naive test which may be fooled in some edge cases. For a module, the path (lib/My/Module.pm) or the name (My::Module) can be both used.

modules_enabling_strict

Experimental. Returning a list of modules and pragmata that enable strict. To modify this list, change @Test::Strict::MODULES_ENABLING_STRICT.

List taken from Module::CPANTS::Kwalitee::Uses v95

modules_enabling_warnings

Experimental. Returning a list of modules and pragmata that enable warnings To modify this list, change @Test::Strict::MODULES_ENABLING_WARNINGS.

List taken from Module::CPANTS::Kwalitee::Uses v95

warnings_ok( $file [, $text] )

Check if warnings have been turned on.

If $file is a module, check if it contains a "use warnings;" or "use warnings::..." or "use Moose" or "use Mouse" statement. use Modern::Perl is also accepted. If the perl version is <= 5.6, this test is skipped ("use warnings" appeared in perl 5.6).

If $file is a script, check if it starts with "#!...perl -w". If the -w is not found and perl is >= 5.6, check for a "use warnings;" or "use warnings::..." or "use Moose" or "use Mouse" statement. use Modern::Perl is also accepted.

This is a pretty naive test which may be fooled in some edge cases. For a module, the path (lib/My/Module.pm) or the name (My::Module) can be both used.

all_perl_files_ok( [ @directories ] )

Applies "strict_ok()" and "syntax_ok()" to all perl files found in @directories (and sub directories). If no <@directories> is given, the starting point is one level above the current running script, that should cover all the files of a typical CPAN distribution. A perl file is *.pl or *.pm or *.t or a file starting with "#!...perl"

If the test plan is defined:

  use Test::Strict tests => 18;
  all_perl_files_ok();

the total number of files tested must be specified.

You can control which tests are run on each perl site through:

  $Test::Strict::TEST_SYNTAX   (default = 1)
  $Test::Strict::TEST_STRICT   (default = 1)
  $Test::Strict::TEST_WARNINGS (default = 0)
  $Test::Strict::TEST_SKIP     (default = []) "Trusted" files to skip

all_cover_ok( [coverage_threshold [, @t_dirs]] )

This will run all the tests in @t_dirs (or current script's directory if @t_dirs is undef) under Devel::Cover and calculate the global test coverage of the code loaded by the tests. If the test coverage is greater or equal than "coverage_threshold", it is a pass, otherwise it's a fail. The default coverage threshold is 50 (meaning 50% of the code loaded has been covered by test).

The threshold can be modified through $Test::Strict::COVERAGE_THRESHOLD.

You may want to select which files are selected for code coverage through $Test::Strict::DEVEL_COVER_OPTIONS, see Devel::Cover for the list of available options. The default is '+ignore,``/Test/Strict\b'''.

The path to "cover" utility can be modified through $Test::Strict::COVER.

The 50% threshold is a completely arbitrary value, which should not be considered as a good enough coverage.

The total coverage is the return value of "all_cover_ok()".

CAVEATS

For "all_cover_ok()" to work properly, it is strongly advised to install the most recent version of Devel::Cover and use perl 5.8.1 or above. In the case of a "make test" scenario, "all_perl_files_ok()" re-run all the tests in a separate perl interpreter, this may lead to some side effects.

AUTHOR

Pierre Denis, "<[email protected]>".

MAINTAINER

Gabor Szabo <http://szabgab.com/>

Currently maintained by Mohammad S Anwar (MANWAR), "<mohammad.anwar at yahoo.com>"

COPYRIGHT

Copyright 2005, 2010 Pierre Denis, All Rights Reserved.

You may use, modify, and distribute this package under the same terms as Perl itself.