Chad Granum > Test-FixtureBuilder-0.001 > Test::FixtureBuilder



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Test::FixtureBuilder - Quickly define fixture data for unit tests


When writing unit tests for applications it is often necessary to load some basic data into a database. This data is often referred to fixture data. There are several approaches to loading fixture data: Manual, From YAML files, or code to create objects.

Sometimes you just want to shove some rows into a database, and you do not want to be bothered with the SQL or the object->new calls. In those cases this module is for you.


There are two interfaces to this module.


The declarative interface is really quite nice.

NOTE: You MUST subclass Test::FixtureBuilder, or use a predefined subclass in order to use the declarative form.

    package Test::FixtureBuilder::MyBuilder;

    use DBI;
    use DBD::SQLite;

    use base Test::FixtureBuilder;

    sub name_to_handle {
        my $class = shift;
        my ($name) = @_;
        return DBI->connect("dbi:SQLite:dbname=$name","","");


Then to use it:

    use Test::FixtureBuilder::MyBuilder;

    fixture_db my_db => sub {
        fixture_table my_table => sub {
            fixture_row { col1 => 'val1', col2 => 'val2' };

            fixture_row { key => $_, col2 => 'xxx' }
                for 1 .. 10;

        fixture_table my_table2 => sub {
            fixture_row { col1 => 'val1', col2 => 'val2' };

    fixture_db my_db2 => sub { ... };




    use Test::FixtureBuilder ();

    my $fb = Test::FixtureBuilder->new( dbh => $dbh );
    $fb->insert_row(tableA => { col1 => 'val1' });
    $fb->insert_row(tableB => { col1 => 'val1' });

        { ... },
        { ... },


fixture_db db_name => sub { ... }

Create a scope in which fixtures use the db_name database

fixture_table table_name => sub { ... }

Create a scope in which fixtures use the table_name table

fixture_row { col => val, ... }
fixture_row ( col => val, ... )
fixture_row col => val, ...

Load a row, you can use a hashref, or key/value pairs.

my $meta = $class->FIXTURE_BUILDER_META

Get the meta-object. Documented for completeness, you should not use this directly.


my $dbh = $class->name_to_handle($dbname)

Get a database handle from a name. You must override this before it will do anything useful. The default behavior is to die unless the $dbname variable is blessed in which case it is returned unchanged.

my $fb = $class->new(...)

Create a new instance. Any valid accessor can be specified at construction time. This includes accessors for your specific subclass.

$class = $fb->class

Used internally.

$dbh = $fb->db

Set the database by name (only useful if you override name_to_handle()). When no argument is given it behaves like dbh().

$dbh = $fb->dbh

Get and/or set the database handle.

$fb->insert_row(table => { ... })

Insert a row into the specified table of the current database.

$fb->insert_rows(table => { ... }, { ... }, ...)

Insert multiple rows into the specified table of the current database.


Chad Granum



I originally developed a tool very similar to this one for use at DreamHost in our test suite. DreamHost gave me permission to release an open-source implementation of the tool.


Copyright (C) 2014 Chad Granum

Test-FixtureBuilder is free software; Standard perl license (GPL and Artistic).

Test-FixtureBuilder is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the license for more details.

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