Assumptions:

1. You are working with a rails application.
2. You only have fixture files for tables in your database. That is if you have a table called companies you have a fixture called companies.yml.

Usage

To add this rake task to your project just drop the migrate_fixtures.rake and migrate_fixtures.rb files into the lib/tasks directory of your rails project. Create a schema_info.yaml file under test/fixtures that contains something like the following: schema_info: version: "2" version number must correspond to the version of your database that your fixtures are currently at.

Now to try it out add a new migration to your project. After calling the db migration you can call rake db:fixtures:migrate and the same migration will be run on your fixtures.