This document discusses using data factories to generate test data in Perl. It shows how to: 1. Construct a test fixture from a YAML file to populate a database with sample data. 2. Create a factory method that generates sample records on demand with random or specified field values. 3. Configure a data factory object to connect to a database and define the factory method for generating rows in a specific table.

1. id:shiba_yu36
2011/11/26 Kansai.pm #14

3. •
• shiba_yu36@hatena
• @shiba_yu36
• shibayu36@github
•
•

10. # fixture.yml
- name: entry1
data:
id: 1
title: my policy
- name: entry2
data:
id: 2
title: please join

11. use Test::More;
use Test::Fixture::DBI;
construct_fixture(
dbh => $dbh,
fixture => '/path/to/fixture.yaml',
);

15. use Test::More;
my $data = DBIx::Sample->create(
id => 1,
title => 'entry1',
);
my $data2 = DBIx::Sample->create(
id => 2,
title => 'entry2',
);
# add test ...

19. sub create_sample (;%) {
my %args = @_;
unless (defined $args{id}) {
$args{id} = int(rand(1000000));
}
my $sample = DBIx::Sample->create(id => $args{id});
unless ($args{title}) {
$args{title} = String::Random->new->randregex('[a-z]
{40}');
}
$sample->title($args{title});
return $sample;
}

20. use Test::More;
my $data = create_sample;
my $data2 = create_sample(title =>
'entry1');
# add test ...

26. CREATE TABLE `sample` (
id int(10) unsigned NOT NULL,
title varchar(20) NOT NULL,
body text
);

27. my $factory_maker = DBIx::DataFactory->new({
username => 'root',
password => '',
dsn => 'dbi:mysql:dbname=sample',
});

28. $factory_maker->create_factory_method(
method => 'create_sample',
table => 'sample',
auto_inserted_columns => {
id => {
type => 'Int',
size => 10,
},
title => {
type => 'Str',
size => 20,
},
},
);

29. my $values = $factory_maker->create_sample;
warn $values->{id};
# +-----------+----------------------+------+
# | id | title | body |
# +-----------+----------------------+------+
# | 452882908 | E54521Hpjkp9Wv1i9Rkb | NULL |
# +-----------+----------------------+------+

30. my $values = $factory_maker->create_sample(
title => 'title',
body => 'body',
);
# +------------+-------+------+
# | id | title | body |
# +------------+-------+------+
# | 3931487566 | title | body |
# +------------+-------+------+

33. $factory_maker->create_factory_method(
method => 'create_sample',
table => 'sample',
auto_inserted_columns => {
id => sub { int rand(1000000000) },
title => {
type => 'Str',
size => 20,
},
},
);