Test::Data::Split - split data-driven tests into several test scripts.


version 0.2.2


    use Test::Data::Split;

    # Implements Test::Data::Split::Backend::Hash
    use MyTest;

    my $tests_dir = "./t";

    my $obj = Test::Data::Split->new(
            target_dir => $tests_dir,
            filename_cb => sub {
                my ($self, $args) = @_;

                my $id = $args->{id};

                return "valgrind-$id.t";
            contents_cb => sub {
                my ($self, $args) = @_;

                my $id = $args->{id};

                return <<"EOF";

    use strict;
    use warnings;

    use Test::More tests => 1;
    use MyTest;

    @{['# TEST']}

            data_obj => MyTest->new,


    # And later in the shell:
    prove t/*.t


This module splits a set of data with IDs and arbitrary values into one test file per (key+value) for easy parallelisation.


my $obj = Test::Data::Split->new({ %PARAMS })

Accepts the following parameters:

  • target_dir

    The path to the target directory - a string.

  • filename_cb

    A subroutine references that accepts ($self, {id => $id }) and returns the filename.

  • contents_cb

    A subroutine references that accepts ($self, {id => $id, data => $data }) and returns the contents inside the file.

  • data_obj

    An object reference that implements the ->list_ids() methods that returns an array reference of IDs to generate as files.

An example for using it can be found in the synopsis.


Generate the files.



The following websites have more information about this module, and may be of help to you. As always, in addition to those websites please use your favorite search engine to discover more resources.

Bugs / Feature Requests

Please report any bugs or feature requests by email to bug-test-data-split at, or through the web interface at You will be automatically notified of any progress on the request by the system.

Source Code

The code is open to the world, and available for you to hack on. Please feel free to browse it and play with it, or whatever. If you want to contribute patches, please send me a diff or prod me to pull from your repository :)

  git clone git://


Shlomi Fish <>


Please report any bugs or feature requests on the bugtracker website

When submitting a bug or request, please include a test-file or a patch to an existing test-file that illustrates the bug or desired feature.


This software is Copyright (c) 2014 by Shlomi Fish.

This is free software, licensed under:

  The MIT (X11) License