== Setup If you don't have an environment for running tests, read http://edgeguides.rubyonrails.org/contributing_to_ruby_on_rails.html#setting-up-a-development-environment == Running the Tests To run a specific test: $ ruby -Itest test/cases/base_test.rb -n method_name To run a set of tests: $ ruby -Itest test/cases/base_test.rb You can also run tests that depend upon a specific database backend. For example: $ bundle exec rake test_sqlite3 Simply executing bundle exec rake test is equivalent to the following: $ bundle exec rake test_mysql $ bundle exec rake test_mysql2 $ bundle exec rake test_postgresql $ bundle exec rake test_sqlite3 There should be tests available for each database backend listed in the {Config File}[rdoc-label:label-Config+File]. (the exact set of available tests is defined in +Rakefile+) == Config File If +test/config.yml+ is present, it's parameters are obeyed. Otherwise, the parameters in +test/config.example.yml+ are obeyed. You can override the +connections:+ parameter in either file using the +ARCONN+ (Active Record CONNection) environment variable: $ ARCONN=postgresql ruby -Itest test/cases/base_test.rb You can specify a custom location for the config file using the +ARCONFIG+ environment variable.