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If you don't have the environment set make sure to read
http://edgeguides.rubyonrails.org/contributing_to_ruby_on_rails.html#testing-active-record.
== Configure databases
Copy test/config.example.yml to test/config.yml and edit as needed. Or just run the tests for
the first time, which will do the copy automatically and use the default (sqlite3).
Create a mysql superuser named 'rails' that does not have a password.
You can build postgres and mysql databases using the postgresql:build_databases and mysql:build_databases rake tasks.
== Running the tests
You can run a particular test file from the command line, e.g.
$ ruby -Itest test/cases/base_test.rb
To run a specific test:
$ ruby -Itest test/cases/base_test.rb -n test_something_works
You can run with a database other than the default you set in test/config.yml, using the ARCONN
environment variable:
$ ARCONN=postgresql ruby -Itest test/cases/base_test.rb
You can run all the tests for a given database via rake:
$ rake test_mysql
The 'rake test' task will run all the tests for mysql, mysql2, sqlite3 and postgresql.
== Config file
By default, the config file is expected to be at the path test/config.yml. You can specify a
custom location with the ARCONFIG environment variable.
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