rails--rails/activerecord/RUNNING_UNIT_TESTS

== Creating the test database

The default names for the test databases are "activerecord_unittest" and 
"activerecord_unittest2". If you want to use another database name then be sure 
to update the connection adapter setups you want to test with in 
test/connections/<your database>/connection.rb. 
When you have the database online, you can import the fixture tables with 
the test/fixtures/db_definitions/*.sql files.

Make sure that you create database objects with the same user that you specified in 
connection.rb otherwise (on Postgres, at least) tests for default values will fail.

== Running with Rake

The easiest way to run the unit tests is through Rake. The default task runs
the entire test suite for all the adapters. You can also run the suite on just
one adapter by using the tasks test_mysql, test_sqlite, test_postgresql or any
of the other test_ tasks. For more information, checkout the full array of rake
tasks with "rake -T"

Rake can be found at http://rake.rubyforge.org

== Running by hand

Unit tests are located in test directory. If you only want to run a single test suite, 
or don't want to bother with Rake, you can do so with something like:

   cd test; ruby -I "connections/native_mysql" base_test.rb
   
That'll run the base suite using the MySQL-Ruby adapter. Change the adapter
and test suite name as needed.

You can also run all the suites on a specific adapter with:

   cd test; all.sh "connections/native_mysql"

== Faster tests

If you are using a database that supports transactions, you can set the
"AR_TX_FIXTURES" environment variable to "yes" to use transactional fixtures.
This gives a very large speed boost. With rake:

  rake AR_TX_FIXTURES=yes

Or, by hand:

  AR_TX_FIXTURES=yes ruby -I connections/native_sqlite3 base_test.rb

== Testing with Oracle

In order to allow for testing against Oracle using an "arunit" schema within an existing
Oracle database, the database name and tns connection string must be set in environment
variables prior to running the unit tests.

  $ export ARUNIT_DB_NAME=MYDB
  $ export ARUNIT_DB=MYDB

The ARUNIT_DB_NAME variable should be set to the name by which the database knows
itself, ie., what will be returned by the query:

  select sys_context('userenv','db_name') db from dual

And the ARUNIT_DB variable should be set to the tns connection string.