Marko Anastasov wrote this on February 19, 2009

Preparing the test database for Rails

Ryan Bates has [covered]](http://railscasts.com/episodes/113)how to contribute to Rails with Git. Since Rails is on GitHub, the basic workflow goes pretty much as you’d expect if you’re familiar with git.

If you want to file a bug for ActiveRecord for example, it’s most helpful to provide or extend an existing test case. See file RUNNING_UNIT_TESTS in the activerecord directory. Here’s how you prepare a MySQL test database:

create database activerecord_unittest;
create database activerecord_unittest2;
grant all on activerecord_unittest.* TO rails@localhost;
grant all on activerecord_unittest2.* TO rails@localhost;

These tests use a number of models, defined in activerecord/test/models/. Running

rake test_mysql TEST=test/cases/aaa_create_tables_test.rb

creates the tables defined in schema.rb. After that you can run tests by specifying the db adapter, like

rake test_mysql TEST=test/cases/base_test.rb
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About Marko Anastasov

Marko co-founded Rendered Text. He’s a programmer with a passion of creating something for other people, coupled with interests in how things work in the society and nature. He is having a great time working across many areas in the company, including product design, helping the engineering teams, empowering users and marketing. He likes to counterbalance it all with running, cycling or a day in the woods.

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