NAME

Test::Requires::Git - Check your test requirements against the available version of Git

SYNOPSIS

# will skip all if git is not available
use Test::Requires::Git;

# needs some git that supports `git init $dir`
test_requires_git version_ge => '1.6.5';

DESCRIPTION

Test::Requires::Git checks if the version of Git available for testing meets the given requirements. If the checks fail, then all tests will be skipped.

use Test::Requires::Git always calls test_requires_git with the given arguments. If you don't want test_requires_git to be called at import time, write this instead:

use Test::Requires::Git -nocheck;

Passing the git parameter (see "test_requires_git" below) to use Test::Requires::Git will override it for the rest of the program run.

EXPORTED FUNCTIONS

test_requires_git

  # skip all unless git is available as required
  test_requires_git version_ge => '1.6.5';

  # giving no operator implies 'version_ge'
  test_requires_git '1.6.5';

  # skip 2 if git is not available
SKIP: {
      test_requires_git skip => 2;
      ...;
  }

  # skip 2 unless git is available as required
SKIP: {
      test_requires_git
        skip       => 2,
        version_ge => '1.7.12';
      ...;
  }

  # skip all remaining tests if git is not available
  test_requires_git;

  # force which git binary to use
  test_requires_git
    git        => '/usr/local/bin/git',
    version_ge => '1.6.5';

Takes a list of version requirements (see "GIT VERSION CHECKING" below), and if one of them does not pass, skips all remaining tests. All conditions must be satisfied for the check to pass.

When the skip parameter is given, only the specified number of tests will be skipped.

The "current git" is obtained by running git --version. I.e. the first git binary found in the current environment will be tested. This is of course sensitive to local changes to PATH, so this will behave as expected:

  # skip 4 tests if there's no git available in the alternative PATH
SKIP: {
      local $ENV{PATH} = $alternative_PATH;
      test_requires_git skip => 4;
      ...;
  }

When the git parameter is given, test_requires_git will run that program instead of git.

If no condition is given, test_requires_git will simply check if git is available.

The first time it's called, test_require_git will print a test diagnostic with the output of git --version (if git is available, of course). To prevent this behaviour, load the module with:

use Test::Requires::Git -quiet;

GIT VERSION CHECKING

The actual comparison is handled by Git::Version::Compare, so the strings can be version numbers, tags from git.git or the output of git version or git describe.

The following version checks are currently supported:

version_eq

Aliases: version_eq, eq, ==, version.

test_requires_git version_eq => $version;

Passes if the current git version is equal to $version.

version_ne

Aliases: version_ne, ne, !=.

test_requires_git version_eq => $version;

Passes if the current git version is not equal to $version.

version_lt

Aliases: version_lt, lt, <.

test_requires_git version_lt => $version;

Passes if the current git version is less than $version.

version_gt

Aliases: version_gt, gt, >.

test_requires_git version_gt => $version;

Passes if the current git version is greater than $version.

version_le

Aliases: version_le, le, <=.

test_requires_git version_le => $version;

Passes if the current git version is less than or equal $version.

version_ge

Aliases: version_ge, ge, >=.

test_requires_git version_ge => $version;

Passes if the current git version is greater than or equal $version.

As a special shortcut for the most common case, a lone version number is turned into a version_ge check, so the following two lines are exactly equivalent:

test_requires_git version_ge => '1.6.5';

# version_ge implied
test_requires_git '1.6.5';

SEE ALSO

Test::Requires, Git::Version::Compare.

ACKNOWLEDGEMENTS

Thanks to Oliver Mengué (DOLMEN), who gave me the idea for this module at the Perl QA Hackathon 2015 in Berlin, and suggested to give a look at Test::Requires for inspiration.

AUTHOR

Philippe Bruhat (BooK), <book@cpan.org>.

COPYRIGHT

Copyright 2015-2016 Philippe Bruhat (BooK), all rights reserved.

LICENSE

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

cpanm Test::Requires::Git

perl -MCPAN -e shell
install Test::Requires::Git