Refactor Active Record test connection setup. Please see the RUNNING_UNIT_TESTS file for details, but essentially you can now configure things in test/config.yml. You can also run tests directly via the command line, e.g. ruby path/to/test.rb (no rake needed, uses default db connection from test/config.yml). This will help us fix the CI by enabling us to isolate the different Rails versions to different databases.

166 files changed, 360 insertions, 571 deletions

diff --git a/activerecord/RUNNING_UNIT_TESTS b/activerecord/RUNNING_UNIT_TESTS
index b3d376772e..bc4faa488c 100644
--- a/activerecord/RUNNING_UNIT_TESTS
+++ b/activerecord/RUNNING_UNIT_TESTS
@@ -1,43 +1,25 @@
-== Creating the test database
+== Configure databases
 
-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 within
-test/connections/<your database>/connection.rb.
-When you have the database online, you can import the fixture tables with
-the test/schema/*.sql files.
+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).
 
-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.
+You can build postgres and mysql databases using the build_postgresql and build_mysql rake tasks.
 
-== Running with Rake
+== Running the tests
 
-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_sqlite3, test_postgresql or any
-of the other test_ tasks. For more information, checkout the full array of rake
-tasks with "rake -T"
+You can run a particular test file from the command line, e.g.
 
-Rake can be found at http://rake.rubyforge.org
+  $ ruby test/cases/base_test.rb
 
-== Running by hand
+To run a specific test:
 
-Unit tests are located in test/cases directory. If you only want to run a single test suite,
-you can do so with:
+  $ ruby test/cases/base_test.rb -n test_something_works
 
-   rake test_mysql TEST=test/cases/base_test.rb
+You can run with a database other than the default you set in test/config.yml, using the ARCONN
+environment variable:
 
-That'll run the base suite using the MySQL-Ruby adapter.  Some tests rely on the schema
-being initialized - you can initialize the schema with:
+  $ ARCONN=postgresql ruby test/cases/base_test.rb
 
-  rake test_mysql TEST=test/cases/aaa_create_tables_test.rb
-  rake mysql:build_databases
-
-To setup the testing environment for PostgreSQL use this command:
-
-  rake postgresql:build_databases
-
-The incantation for running a particular test looks like this
-
-  rake test TEST=test/cases/datatype_test_postgresql.rb TESTOPTS="-n test_timestamp_with_zone_values_without_rails_time_zone_support"
+You can run all the tests for a given database via rake:
 
+  $ rake test_postgresql
diff --git a/activerecord/Rakefile b/activerecord/Rakefile
index 346c7e8142..d5863ab14d 100755
--- a/activerecord/Rakefile
+++ b/activerecord/Rakefile
@@ -43,26 +43,24 @@ end
 
 %w( mysql mysql2 postgresql sqlite3 sqlite3_mem firebird db2 oracle sybase openbase frontbase jdbcmysql jdbcpostgresql jdbcsqlite3 jdbcderby jdbch2 jdbchsqldb ).each do |adapter|
   Rake::TestTask.new("test_#{adapter}") { |t|
-    connection_path = "test/connections/#{adapter =~ /jdbc/ ? 'jdbc' : 'native'}_#{adapter}"
     adapter_short = adapter == 'db2' ? adapter : adapter[/^[a-z0-9]+/]
-    t.libs << "test" << connection_path
     t.test_files = (Dir.glob( "test/cases/**/*_test.rb" ).reject {
       |x| x =~ /\/adapters\//
     } + Dir.glob("test/cases/adapters/#{adapter_short}/**/*_test.rb")).sort
 
     t.verbose = true
     t.warning = true
+    t.ruby_opts = ["-r#{File.expand_path('../', __FILE__)}/test/connections/#{adapter}"]
   }
 
   task "isolated_test_#{adapter}" do
-    connection_path = "test/connections/#{adapter =~ /jdbc/ ? 'jdbc' : 'native'}_#{adapter}"
     adapter_short = adapter == 'db2' ? adapter : adapter[/^[a-z0-9]+/]
-    puts [adapter, adapter_short, connection_path].inspect
+    puts [adapter, adapter_short].inspect
     ruby = File.join(*RbConfig::CONFIG.values_at('bindir', 'RUBY_INSTALL_NAME'))
     (Dir["test/cases/**/*_test.rb"].reject {
       |x| x =~ /\/adapters\//
     } + Dir["test/cases/adapters/#{adapter_short}/**/*_test.rb"]).all? do |file|
-      sh(ruby, "-Ilib:test:#{connection_path}", file)
+      sh(ruby, "-Itest", "-r#{File.expand_path('../', __FILE__)}/test/connections/#{adapter}", file)
     end or raise "Failures"
   end
 
diff --git a/activerecord/test/.gitignore b/activerecord/test/.gitignore
new file mode 100644
index 0000000000..a0ec5967dd
--- /dev/null
+++ b/activerecord/test/.gitignore
@@ -0,0 +1 @@
+/config.yml
diff --git a/activerecord/test/cases/adapter_test.rb b/activerecord/test/cases/adapter_test.rb
index 49b2e945c3..295d78284e 100644
--- a/activerecord/test/cases/adapter_test.rb
+++ b/activerecord/test/cases/adapter_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 
 class AdapterTest < ActiveRecord::TestCase
   def setup
diff --git a/activerecord/test/cases/adapters/firebird/connection_test.rb b/activerecord/test/cases/adapters/firebird/connection_test.rb
index f57ea686a5..47e8859ac6 100644
--- a/activerecord/test/cases/adapters/firebird/connection_test.rb
+++ b/activerecord/test/cases/adapters/firebird/connection_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../../helper', __FILE__)
 
 class FirebirdConnectionTest < ActiveRecord::TestCase
   def test_charset_properly_set
diff --git a/activerecord/test/cases/adapters/firebird/default_test.rb b/activerecord/test/cases/adapters/firebird/default_test.rb
index 713c7e11bf..2d5e45dd74 100644
--- a/activerecord/test/cases/adapters/firebird/default_test.rb
+++ b/activerecord/test/cases/adapters/firebird/default_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../../helper', __FILE__)
 require 'models/default'
 
 class DefaultTest < ActiveRecord::TestCase
diff --git a/activerecord/test/cases/adapters/firebird/migration_test.rb b/activerecord/test/cases/adapters/firebird/migration_test.rb
index 5c94593765..0fe3d4a858 100644
--- a/activerecord/test/cases/adapters/firebird/migration_test.rb
+++ b/activerecord/test/cases/adapters/firebird/migration_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../../helper', __FILE__)
 require 'models/course'
 
 class FirebirdMigrationTest < ActiveRecord::TestCase
diff --git a/activerecord/test/cases/adapters/mysql/active_schema_test.rb b/activerecord/test/cases/adapters/mysql/active_schema_test.rb
index 509baacaef..c817b259b4 100644
--- a/activerecord/test/cases/adapters/mysql/active_schema_test.rb
+++ b/activerecord/test/cases/adapters/mysql/active_schema_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../../helper', __FILE__)
 
 class ActiveSchemaTest < ActiveRecord::TestCase
   def setup
diff --git a/activerecord/test/cases/adapters/mysql/connection_test.rb b/activerecord/test/cases/adapters/mysql/connection_test.rb
index eee771ecff..703eb5a8bd 100644
--- a/activerecord/test/cases/adapters/mysql/connection_test.rb
+++ b/activerecord/test/cases/adapters/mysql/connection_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../../helper', __FILE__)
 
 class MysqlConnectionTest < ActiveRecord::TestCase
   def setup
diff --git a/activerecord/test/cases/adapters/mysql/mysql_adapter_test.rb b/activerecord/test/cases/adapters/mysql/mysql_adapter_test.rb
index 146b77a95c..756115e5c9 100644
--- a/activerecord/test/cases/adapters/mysql/mysql_adapter_test.rb
+++ b/activerecord/test/cases/adapters/mysql/mysql_adapter_test.rb
@@ -1,6 +1,6 @@
 # encoding: utf-8
 
-require "cases/helper"
+require File.expand_path('../../../helper', __FILE__)
 
 module ActiveRecord
   module ConnectionAdapters
diff --git a/activerecord/test/cases/adapters/mysql/quoting_test.rb b/activerecord/test/cases/adapters/mysql/quoting_test.rb
index 9673e2bb46..7933800440 100644
--- a/activerecord/test/cases/adapters/mysql/quoting_test.rb
+++ b/activerecord/test/cases/adapters/mysql/quoting_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../../helper', __FILE__)
 
 module ActiveRecord
   module ConnectionAdapters
@@ -23,4 +23,3 @@ module ActiveRecord
     end
   end
 end
-
diff --git a/activerecord/test/cases/adapters/mysql/reserved_word_test.rb b/activerecord/test/cases/adapters/mysql/reserved_word_test.rb
index 292c7efebb..2750831b93 100644
--- a/activerecord/test/cases/adapters/mysql/reserved_word_test.rb
+++ b/activerecord/test/cases/adapters/mysql/reserved_word_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../../helper', __FILE__)
 
 class Group < ActiveRecord::Base
   Group.table_name = 'group'
diff --git a/activerecord/test/cases/adapters/mysql/schema_test.rb b/activerecord/test/cases/adapters/mysql/schema_test.rb
index a2155d1dd1..8b26d303bf 100644
--- a/activerecord/test/cases/adapters/mysql/schema_test.rb
+++ b/activerecord/test/cases/adapters/mysql/schema_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../../helper', __FILE__)
 require 'models/post'
 require 'models/comment'
 
diff --git a/activerecord/test/cases/adapters/mysql/sp_test.rb b/activerecord/test/cases/adapters/mysql/sp_test.rb
index 3ca2917ca4..baa44fab70 100644
--- a/activerecord/test/cases/adapters/mysql/sp_test.rb
+++ b/activerecord/test/cases/adapters/mysql/sp_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../../helper', __FILE__)
 require 'models/topic'
 
 class StoredProcedureTest < ActiveRecord::TestCase
diff --git a/activerecord/test/cases/adapters/mysql2/active_schema_test.rb b/activerecord/test/cases/adapters/mysql2/active_schema_test.rb
index a83399d0cd..ca716f7016 100644
--- a/activerecord/test/cases/adapters/mysql2/active_schema_test.rb
+++ b/activerecord/test/cases/adapters/mysql2/active_schema_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../../helper', __FILE__)
 
 class ActiveSchemaTest < ActiveRecord::TestCase
   def setup
diff --git a/activerecord/test/cases/adapters/mysql2/bind_parameter_test.rb b/activerecord/test/cases/adapters/mysql2/bind_parameter_test.rb
index cd9c1041dc..7bb35d755a 100644
--- a/activerecord/test/cases/adapters/mysql2/bind_parameter_test.rb
+++ b/activerecord/test/cases/adapters/mysql2/bind_parameter_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../../helper', __FILE__)
 require 'models/topic'
 
 module ActiveRecord
diff --git a/activerecord/test/cases/adapters/mysql2/connection_test.rb b/activerecord/test/cases/adapters/mysql2/connection_test.rb
index 26091c713b..1c523dad69 100644
--- a/activerecord/test/cases/adapters/mysql2/connection_test.rb
+++ b/activerecord/test/cases/adapters/mysql2/connection_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../../helper', __FILE__)
 
 class MysqlConnectionTest < ActiveRecord::TestCase
   def setup
diff --git a/activerecord/test/cases/adapters/mysql2/reserved_word_test.rb b/activerecord/test/cases/adapters/mysql2/reserved_word_test.rb
index 752b864818..9cb30b0fd1 100644
--- a/activerecord/test/cases/adapters/mysql2/reserved_word_test.rb
+++ b/activerecord/test/cases/adapters/mysql2/reserved_word_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../../helper', __FILE__)
 
 class Group < ActiveRecord::Base
   Group.table_name = 'group'
diff --git a/activerecord/test/cases/adapters/mysql2/schema_test.rb b/activerecord/test/cases/adapters/mysql2/schema_test.rb
index 858d1da2dd..ec89972360 100644
--- a/activerecord/test/cases/adapters/mysql2/schema_test.rb
+++ b/activerecord/test/cases/adapters/mysql2/schema_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../../helper', __FILE__)
 require 'models/post'
 require 'models/comment'
 
diff --git a/activerecord/test/cases/adapters/oracle/synonym_test.rb b/activerecord/test/cases/adapters/oracle/synonym_test.rb
index b9a422a6ca..4cbca6dcb2 100644
--- a/activerecord/test/cases/adapters/oracle/synonym_test.rb
+++ b/activerecord/test/cases/adapters/oracle/synonym_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../../helper', __FILE__)
 require 'models/topic'
 require 'models/subject'
 
diff --git a/activerecord/test/cases/adapters/postgresql/active_schema_test.rb b/activerecord/test/cases/adapters/postgresql/active_schema_test.rb
index e4746d4aa3..1802e2be24 100644
--- a/activerecord/test/cases/adapters/postgresql/active_schema_test.rb
+++ b/activerecord/test/cases/adapters/postgresql/active_schema_test.rb
@@ -1,4 +1,4 @@
-require 'cases/helper'
+require File.expand_path('../../../helper', __FILE__)
 
 class PostgresqlActiveSchemaTest < ActiveRecord::TestCase
   def setup
diff --git a/activerecord/test/cases/adapters/postgresql/datatype_test.rb b/activerecord/test/cases/adapters/postgresql/datatype_test.rb
index ce08e4c6a7..c383e8b6fb 100644
--- a/activerecord/test/cases/adapters/postgresql/datatype_test.rb
+++ b/activerecord/test/cases/adapters/postgresql/datatype_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../../helper', __FILE__)
 
 class PostgresqlArray < ActiveRecord::Base
 end
diff --git a/activerecord/test/cases/adapters/postgresql/postgresql_adapter_test.rb b/activerecord/test/cases/adapters/postgresql/postgresql_adapter_test.rb
index 7c49236854..14e78ed982 100644
--- a/activerecord/test/cases/adapters/postgresql/postgresql_adapter_test.rb
+++ b/activerecord/test/cases/adapters/postgresql/postgresql_adapter_test.rb
@@ -1,5 +1,5 @@
 # encoding: utf-8
-require "cases/helper"
+require File.expand_path('../../../helper', __FILE__)
 
 module ActiveRecord
   module ConnectionAdapters
diff --git a/activerecord/test/cases/adapters/postgresql/quoting_test.rb b/activerecord/test/cases/adapters/postgresql/quoting_test.rb
index 172055f15c..e95d10c594 100644
--- a/activerecord/test/cases/adapters/postgresql/quoting_test.rb
+++ b/activerecord/test/cases/adapters/postgresql/quoting_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../../helper', __FILE__)
 
 module ActiveRecord
   module ConnectionAdapters
diff --git a/activerecord/test/cases/adapters/postgresql/schema_authorization_test.rb b/activerecord/test/cases/adapters/postgresql/schema_authorization_test.rb
index d5e1838543..8b9c4d337a 100644
--- a/activerecord/test/cases/adapters/postgresql/schema_authorization_test.rb
+++ b/activerecord/test/cases/adapters/postgresql/schema_authorization_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../../helper', __FILE__)
 
 class SchemaThing < ActiveRecord::Base
 end
diff --git a/activerecord/test/cases/adapters/postgresql/schema_test.rb b/activerecord/test/cases/adapters/postgresql/schema_test.rb
index a5c3e69af9..6f3dba4168 100644
--- a/activerecord/test/cases/adapters/postgresql/schema_test.rb
+++ b/activerecord/test/cases/adapters/postgresql/schema_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../../helper', __FILE__)
 
 class SchemaTest < ActiveRecord::TestCase
   self.use_transactional_fixtures = false
diff --git a/activerecord/test/cases/adapters/postgresql/timestamp_test.rb b/activerecord/test/cases/adapters/postgresql/timestamp_test.rb
index 337f43c421..fb4616dc76 100644
--- a/activerecord/test/cases/adapters/postgresql/timestamp_test.rb
+++ b/activerecord/test/cases/adapters/postgresql/timestamp_test.rb
@@ -1,4 +1,4 @@
-require 'cases/helper'
+require File.expand_path('../../../helper', __FILE__)
 require 'models/developer'
 
 class TimestampTest < ActiveRecord::TestCase
diff --git a/activerecord/test/cases/adapters/sqlite3/copy_table_test.rb b/activerecord/test/cases/adapters/sqlite3/copy_table_test.rb
index 575b4806c1..899df1d59a 100644
--- a/activerecord/test/cases/adapters/sqlite3/copy_table_test.rb
+++ b/activerecord/test/cases/adapters/sqlite3/copy_table_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../../helper', __FILE__)
 
 class CopyTableTest < ActiveRecord::TestCase
   fixtures :customers, :companies, :comments
diff --git a/activerecord/test/cases/adapters/sqlite3/quoting_test.rb b/activerecord/test/cases/adapters/sqlite3/quoting_test.rb
index 0d9db92447..51f01c262d 100644
--- a/activerecord/test/cases/adapters/sqlite3/quoting_test.rb
+++ b/activerecord/test/cases/adapters/sqlite3/quoting_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../../helper', __FILE__)
 require 'bigdecimal'
 require 'yaml'
 
diff --git a/activerecord/test/cases/adapters/sqlite3/sqlite3_adapter_test.rb b/activerecord/test/cases/adapters/sqlite3/sqlite3_adapter_test.rb
index 6ff04e3eb3..d58a804815 100644
--- a/activerecord/test/cases/adapters/sqlite3/sqlite3_adapter_test.rb
+++ b/activerecord/test/cases/adapters/sqlite3/sqlite3_adapter_test.rb
@@ -1,5 +1,5 @@
 # encoding: utf-8
-require "cases/helper"
+require File.expand_path('../../../helper', __FILE__)
 
 module ActiveRecord
   module ConnectionAdapters
diff --git a/activerecord/test/cases/aggregations_test.rb b/activerecord/test/cases/aggregations_test.rb
index 3e0e6dce2c..d296364d7f 100644
--- a/activerecord/test/cases/aggregations_test.rb
+++ b/activerecord/test/cases/aggregations_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require 'models/customer'
 require 'active_support/core_ext/exception'
 
diff --git a/activerecord/test/cases/ar_schema_test.rb b/activerecord/test/cases/ar_schema_test.rb
index 588adc38e3..eb4488899f 100644
--- a/activerecord/test/cases/ar_schema_test.rb
+++ b/activerecord/test/cases/ar_schema_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 
 if ActiveRecord::Base.connection.supports_migrations?
 
diff --git a/activerecord/test/cases/associations/belongs_to_associations_test.rb b/activerecord/test/cases/associations/belongs_to_associations_test.rb
index 5a900e0605..d7293aa1e3 100644
--- a/activerecord/test/cases/associations/belongs_to_associations_test.rb
+++ b/activerecord/test/cases/associations/belongs_to_associations_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../helper', __FILE__)
 require 'models/developer'
 require 'models/project'
 require 'models/company'
diff --git a/activerecord/test/cases/associations/callbacks_test.rb b/activerecord/test/cases/associations/callbacks_test.rb
index 2d0d4541b4..387a25b7b1 100644
--- a/activerecord/test/cases/associations/callbacks_test.rb
+++ b/activerecord/test/cases/associations/callbacks_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../helper', __FILE__)
 require 'models/post'
 require 'models/author'
 require 'models/project'
diff --git a/activerecord/test/cases/associations/cascaded_eager_loading_test.rb b/activerecord/test/cases/associations/cascaded_eager_loading_test.rb
index ff376a68d8..d21afff978 100644
--- a/activerecord/test/cases/associations/cascaded_eager_loading_test.rb
+++ b/activerecord/test/cases/associations/cascaded_eager_loading_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../helper', __FILE__)
 require 'models/post'
 require 'models/comment'
 require 'models/author'
diff --git a/activerecord/test/cases/associations/eager_load_includes_full_sti_class_test.rb b/activerecord/test/cases/associations/eager_load_includes_full_sti_class_test.rb
index d75791cab9..41cf745f91 100644
--- a/activerecord/test/cases/associations/eager_load_includes_full_sti_class_test.rb
+++ b/activerecord/test/cases/associations/eager_load_includes_full_sti_class_test.rb
@@ -1,4 +1,4 @@
-require 'cases/helper'
+require File.expand_path('../../helper', __FILE__)
 require 'models/post'
 require 'models/tagging'
 
diff --git a/activerecord/test/cases/associations/eager_load_nested_include_test.rb b/activerecord/test/cases/associations/eager_load_nested_include_test.rb
index 2cf9f89c3c..de1f47873f 100644
--- a/activerecord/test/cases/associations/eager_load_nested_include_test.rb
+++ b/activerecord/test/cases/associations/eager_load_nested_include_test.rb
@@ -1,4 +1,4 @@
-require 'cases/helper'
+require File.expand_path('../../helper', __FILE__)
 require 'models/post'
 require 'models/tag'
 require 'models/author'
diff --git a/activerecord/test/cases/associations/eager_singularization_test.rb b/activerecord/test/cases/associations/eager_singularization_test.rb
index 07d0b24613..ffb5411a5b 100644
--- a/activerecord/test/cases/associations/eager_singularization_test.rb
+++ b/activerecord/test/cases/associations/eager_singularization_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../helper', __FILE__)
 
 class Virus < ActiveRecord::Base
   belongs_to :octopus
diff --git a/activerecord/test/cases/associations/eager_test.rb b/activerecord/test/cases/associations/eager_test.rb
index 325fc58958..945edad48a 100644
--- a/activerecord/test/cases/associations/eager_test.rb
+++ b/activerecord/test/cases/associations/eager_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../helper', __FILE__)
 require 'models/post'
 require 'models/tagging'
 require 'models/tag'
diff --git a/activerecord/test/cases/associations/extension_test.rb b/activerecord/test/cases/associations/extension_test.rb
index 24830a661a..c0a8f74834 100644
--- a/activerecord/test/cases/associations/extension_test.rb
+++ b/activerecord/test/cases/associations/extension_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../helper', __FILE__)
 require 'models/post'
 require 'models/comment'
 require 'models/project'
diff --git a/activerecord/test/cases/associations/habtm_join_table_test.rb b/activerecord/test/cases/associations/habtm_join_table_test.rb
index fe2b82f2c1..cc0a6cd6c2 100644
--- a/activerecord/test/cases/associations/habtm_join_table_test.rb
+++ b/activerecord/test/cases/associations/habtm_join_table_test.rb
@@ -1,4 +1,4 @@
-require 'cases/helper'
+require File.expand_path('../../helper', __FILE__)
 
 class MyReader < ActiveRecord::Base
   has_and_belongs_to_many :my_books
diff --git a/activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb b/activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb
index e5735988d0..171177ad1d 100644
--- a/activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb
+++ b/activerecord/test/cases/associations/has_and_belongs_to_many_associations_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../helper', __FILE__)
 require 'models/developer'
 require 'models/project'
 require 'models/company'
@@ -100,7 +100,7 @@ class HasAndBelongsToManyAssociationsTest < ActiveRecord::TestCase
     assert_equal 'c1', record[0]
     assert_equal 't1', record[1]
   end
-  
+
   def test_proper_usage_of_primary_keys_and_join_table
     setup_data_for_habtm_case
 
diff --git a/activerecord/test/cases/associations/has_many_associations_test.rb b/activerecord/test/cases/associations/has_many_associations_test.rb
index 49999630b6..b87a1744c1 100644
--- a/activerecord/test/cases/associations/has_many_associations_test.rb
+++ b/activerecord/test/cases/associations/has_many_associations_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../helper', __FILE__)
 require 'models/developer'
 require 'models/project'
 require 'models/company'
diff --git a/activerecord/test/cases/associations/has_many_through_associations_test.rb b/activerecord/test/cases/associations/has_many_through_associations_test.rb
index 877148bd5e..476bc637f6 100644
--- a/activerecord/test/cases/associations/has_many_through_associations_test.rb
+++ b/activerecord/test/cases/associations/has_many_through_associations_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../helper', __FILE__)
 require 'models/post'
 require 'models/person'
 require 'models/reference'
diff --git a/activerecord/test/cases/associations/has_one_associations_test.rb b/activerecord/test/cases/associations/has_one_associations_test.rb
index 299688d840..9bafe0f57d 100644
--- a/activerecord/test/cases/associations/has_one_associations_test.rb
+++ b/activerecord/test/cases/associations/has_one_associations_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../helper', __FILE__)
 require 'models/developer'
 require 'models/project'
 require 'models/company'
diff --git a/activerecord/test/cases/associations/has_one_through_associations_test.rb b/activerecord/test/cases/associations/has_one_through_associations_test.rb
index 2503349c08..24576fb580 100644
--- a/activerecord/test/cases/associations/has_one_through_associations_test.rb
+++ b/activerecord/test/cases/associations/has_one_through_associations_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../helper', __FILE__)
 require 'models/club'
 require 'models/member_type'
 require 'models/member'
diff --git a/activerecord/test/cases/associations/identity_map_test.rb b/activerecord/test/cases/associations/identity_map_test.rb
index 9b8635774c..0dd6c76efd 100644
--- a/activerecord/test/cases/associations/identity_map_test.rb
+++ b/activerecord/test/cases/associations/identity_map_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../helper', __FILE__)
 require 'models/author'
 require 'models/post'
 
diff --git a/activerecord/test/cases/associations/inner_join_association_test.rb b/activerecord/test/cases/associations/inner_join_association_test.rb
index e5e9ca6131..1c0fe8368f 100644
--- a/activerecord/test/cases/associations/inner_join_association_test.rb
+++ b/activerecord/test/cases/associations/inner_join_association_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../helper', __FILE__)
 require 'models/post'
 require 'models/comment'
 require 'models/author'
diff --git a/activerecord/test/cases/associations/inverse_associations_test.rb b/activerecord/test/cases/associations/inverse_associations_test.rb
index 76282213d8..9e4975566b 100644
--- a/activerecord/test/cases/associations/inverse_associations_test.rb
+++ b/activerecord/test/cases/associations/inverse_associations_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../helper', __FILE__)
 require 'models/man'
 require 'models/face'
 require 'models/interest'
diff --git a/activerecord/test/cases/associations/join_model_test.rb b/activerecord/test/cases/associations/join_model_test.rb
index b59ce4efeb..c869e6fbc5 100644
--- a/activerecord/test/cases/associations/join_model_test.rb
+++ b/activerecord/test/cases/associations/join_model_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../helper', __FILE__)
 require 'active_support/core_ext/object/inclusion'
 require 'models/tag'
 require 'models/tagging'
diff --git a/activerecord/test/cases/associations/nested_through_associations_test.rb b/activerecord/test/cases/associations/nested_through_associations_test.rb
index dd450a2a8e..b13b8d5e36 100644
--- a/activerecord/test/cases/associations/nested_through_associations_test.rb
+++ b/activerecord/test/cases/associations/nested_through_associations_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../helper', __FILE__)
 require 'models/author'
 require 'models/post'
 require 'models/person'
diff --git a/activerecord/test/cases/associations_test.rb b/activerecord/test/cases/associations_test.rb
index 49d82ba2df..8bff37907d 100644
--- a/activerecord/test/cases/associations_test.rb
+++ b/activerecord/test/cases/associations_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require 'models/developer'
 require 'models/project'
 require 'models/company'
diff --git a/activerecord/test/cases/attribute_methods/read_test.rb b/activerecord/test/cases/attribute_methods/read_test.rb
index 3641031d12..bb0dcb2a77 100644
--- a/activerecord/test/cases/attribute_methods/read_test.rb
+++ b/activerecord/test/cases/attribute_methods/read_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../helper', __FILE__)
 require 'active_support/core_ext/object/inclusion'
 
 module ActiveRecord
diff --git a/activerecord/test/cases/attribute_methods_test.rb b/activerecord/test/cases/attribute_methods_test.rb
index b0896fb236..bf6408be0f 100644
--- a/activerecord/test/cases/attribute_methods_test.rb
+++ b/activerecord/test/cases/attribute_methods_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require 'active_support/core_ext/object/inclusion'
 require 'models/minimalistic'
 require 'models/developer'
diff --git a/activerecord/test/cases/autosave_association_test.rb b/activerecord/test/cases/autosave_association_test.rb
index 8f55b7ebe6..b14c458435 100644
--- a/activerecord/test/cases/autosave_association_test.rb
+++ b/activerecord/test/cases/autosave_association_test.rb
@@ -1,4 +1,4 @@
-require 'cases/helper'
+require File.expand_path('../helper', __FILE__)
 require 'models/bird'
 require 'models/company'
 require 'models/customer'
diff --git a/activerecord/test/cases/base_test.rb b/activerecord/test/cases/base_test.rb
index 2224097f04..5eb9a825b7 100644
--- a/activerecord/test/cases/base_test.rb
+++ b/activerecord/test/cases/base_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require 'models/post'
 require 'models/author'
 require 'models/topic'
diff --git a/activerecord/test/cases/batches_test.rb b/activerecord/test/cases/batches_test.rb
index 6620464d6a..31e00c998c 100644
--- a/activerecord/test/cases/batches_test.rb
+++ b/activerecord/test/cases/batches_test.rb
@@ -1,4 +1,4 @@
-require 'cases/helper'
+require File.expand_path('../helper', __FILE__)
 require 'models/post'
 
 class EachTest < ActiveRecord::TestCase
diff --git a/activerecord/test/cases/binary_test.rb b/activerecord/test/cases/binary_test.rb
index 06c14cb108..365c16679e 100644
--- a/activerecord/test/cases/binary_test.rb
+++ b/activerecord/test/cases/binary_test.rb
@@ -1,5 +1,5 @@
 # encoding: utf-8
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 
 # Without using prepared statements, it makes no sense to test
 # BLOB data with DB2 or Firebird, because the length of a statement
diff --git a/activerecord/test/cases/bind_parameter_test.rb b/activerecord/test/cases/bind_parameter_test.rb
index 3652255c38..bfd4c2afdf 100644
--- a/activerecord/test/cases/bind_parameter_test.rb
+++ b/activerecord/test/cases/bind_parameter_test.rb
@@ -1,4 +1,4 @@
-require 'cases/helper'
+require File.expand_path('../helper', __FILE__)
 require 'models/topic'
 
 module ActiveRecord
diff --git a/activerecord/test/cases/calculations_test.rb b/activerecord/test/cases/calculations_test.rb
index 56f6d795b6..cedd5c3d41 100644
--- a/activerecord/test/cases/calculations_test.rb
+++ b/activerecord/test/cases/calculations_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require 'models/company'
 require 'models/topic'
 require 'models/edge'
diff --git a/activerecord/test/cases/callbacks_test.rb b/activerecord/test/cases/callbacks_test.rb
index 7f4d25790b..c2b43438fc 100644
--- a/activerecord/test/cases/callbacks_test.rb
+++ b/activerecord/test/cases/callbacks_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 
 class CallbackDeveloper < ActiveRecord::Base
   set_table_name 'developers'
diff --git a/activerecord/test/cases/clone_test.rb b/activerecord/test/cases/clone_test.rb
index d91646efca..b25340c205 100644
--- a/activerecord/test/cases/clone_test.rb
+++ b/activerecord/test/cases/clone_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require 'models/topic'
 
 module ActiveRecord
diff --git a/activerecord/test/cases/coders/yaml_column_test.rb b/activerecord/test/cases/coders/yaml_column_test.rb
index c7dcc21809..55aba713e8 100644
--- a/activerecord/test/cases/coders/yaml_column_test.rb
+++ b/activerecord/test/cases/coders/yaml_column_test.rb
@@ -1,5 +1,4 @@
-
-require "cases/helper"
+require File.expand_path('../../helper', __FILE__)
 
 module ActiveRecord
   module Coders
diff --git a/activerecord/test/cases/column_alias_test.rb b/activerecord/test/cases/column_alias_test.rb
index 40707d9cb2..1b6ac870e4 100644
--- a/activerecord/test/cases/column_alias_test.rb
+++ b/activerecord/test/cases/column_alias_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require 'models/topic'
 
 class TestColumnAlias < ActiveRecord::TestCase
diff --git a/activerecord/test/cases/column_definition_test.rb b/activerecord/test/cases/column_definition_test.rb
index d1dddd4c2c..4d046eb9ba 100644
--- a/activerecord/test/cases/column_definition_test.rb
+++ b/activerecord/test/cases/column_definition_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 
 module ActiveRecord
   module ConnectionAdapters
diff --git a/activerecord/test/cases/connection_adapters/connection_handler_test.rb b/activerecord/test/cases/connection_adapters/connection_handler_test.rb
index abf317768f..0bf33f86cf 100644
--- a/activerecord/test/cases/connection_adapters/connection_handler_test.rb
+++ b/activerecord/test/cases/connection_adapters/connection_handler_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../helper', __FILE__)
 
 module ActiveRecord
   module ConnectionAdapters
diff --git a/activerecord/test/cases/connection_management_test.rb b/activerecord/test/cases/connection_management_test.rb
index 85871aebdf..2b2deb6732 100644
--- a/activerecord/test/cases/connection_management_test.rb
+++ b/activerecord/test/cases/connection_management_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 
 module ActiveRecord
   module ConnectionAdapters
diff --git a/activerecord/test/cases/connection_pool_test.rb b/activerecord/test/cases/connection_pool_test.rb
index f92f4e62c5..7aa765dc4f 100644
--- a/activerecord/test/cases/connection_pool_test.rb
+++ b/activerecord/test/cases/connection_pool_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 
 module ActiveRecord
   module ConnectionAdapters
diff --git a/activerecord/test/cases/counter_cache_test.rb b/activerecord/test/cases/counter_cache_test.rb
index 3ed96a3ec8..31faef5f0f 100644
--- a/activerecord/test/cases/counter_cache_test.rb
+++ b/activerecord/test/cases/counter_cache_test.rb
@@ -1,4 +1,4 @@
-require 'cases/helper'
+require File.expand_path('../helper', __FILE__)
 require 'models/topic'
 require 'models/car'
 require 'models/wheel'
diff --git a/activerecord/test/cases/custom_locking_test.rb b/activerecord/test/cases/custom_locking_test.rb
index d63ecdbcc5..1d4385eac0 100644
--- a/activerecord/test/cases/custom_locking_test.rb
+++ b/activerecord/test/cases/custom_locking_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require 'models/person'
 
 module ActiveRecord
diff --git a/activerecord/test/cases/database_statements_test.rb b/activerecord/test/cases/database_statements_test.rb
index c689e97d83..8fa2c9ca44 100644
--- a/activerecord/test/cases/database_statements_test.rb
+++ b/activerecord/test/cases/database_statements_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 
 class DatabaseStatementsTest < ActiveRecord::TestCase
   def setup
diff --git a/activerecord/test/cases/date_time_test.rb b/activerecord/test/cases/date_time_test.rb
index 3deb0dac99..a9e477bd76 100644
--- a/activerecord/test/cases/date_time_test.rb
+++ b/activerecord/test/cases/date_time_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require 'models/topic'
 require 'models/task'
 
diff --git a/activerecord/test/cases/defaults_test.rb b/activerecord/test/cases/defaults_test.rb
index b3a281d960..8cf008871b 100644
--- a/activerecord/test/cases/defaults_test.rb
+++ b/activerecord/test/cases/defaults_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require 'active_support/core_ext/object/inclusion'
 require 'models/default'
 require 'models/entrant'
diff --git a/activerecord/test/cases/deprecated_finder_test.rb b/activerecord/test/cases/deprecated_finder_test.rb
index 2afc91b769..1819bfc5ca 100644
--- a/activerecord/test/cases/deprecated_finder_test.rb
+++ b/activerecord/test/cases/deprecated_finder_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require 'models/entrant'
 
 class DeprecatedFinderTest < ActiveRecord::TestCase
diff --git a/activerecord/test/cases/dirty_test.rb b/activerecord/test/cases/dirty_test.rb
index b1ce846218..7d58781eca 100644
--- a/activerecord/test/cases/dirty_test.rb
+++ b/activerecord/test/cases/dirty_test.rb
@@ -1,4 +1,4 @@
-require 'cases/helper'
+require File.expand_path('../helper', __FILE__)
 require 'models/topic'    # For booleans
 require 'models/pirate'   # For timestamps
 require 'models/parrot'
diff --git a/activerecord/test/cases/dup_test.rb b/activerecord/test/cases/dup_test.rb
index 0236f9b0a1..9acf5fdd32 100644
--- a/activerecord/test/cases/dup_test.rb
+++ b/activerecord/test/cases/dup_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require 'models/topic'
 
 module ActiveRecord
diff --git a/activerecord/test/cases/dynamic_finder_match_test.rb b/activerecord/test/cases/dynamic_finder_match_test.rb
index e576870317..693a8e2180 100644
--- a/activerecord/test/cases/dynamic_finder_match_test.rb
+++ b/activerecord/test/cases/dynamic_finder_match_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 
 module ActiveRecord
   class DynamicFinderMatchTest < ActiveRecord::TestCase
diff --git a/activerecord/test/cases/finder_respond_to_test.rb b/activerecord/test/cases/finder_respond_to_test.rb
index 235805a67c..7952e9a46a 100644
--- a/activerecord/test/cases/finder_respond_to_test.rb
+++ b/activerecord/test/cases/finder_respond_to_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require 'models/topic'
 
 class FinderRespondToTest < ActiveRecord::TestCase
diff --git a/activerecord/test/cases/finder_test.rb b/activerecord/test/cases/finder_test.rb
index 4e75eafe3d..3920f306f9 100644
--- a/activerecord/test/cases/finder_test.rb
+++ b/activerecord/test/cases/finder_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require 'models/post'
 require 'models/author'
 require 'models/categorization'
diff --git a/activerecord/test/cases/fixtures/file_test.rb b/activerecord/test/cases/fixtures/file_test.rb
index 8dbf92ae9a..9ff4455394 100644
--- a/activerecord/test/cases/fixtures/file_test.rb
+++ b/activerecord/test/cases/fixtures/file_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../helper', __FILE__)
 require 'tempfile'
 
 module ActiveRecord
diff --git a/activerecord/test/cases/fixtures_test.rb b/activerecord/test/cases/fixtures_test.rb
index 306b437fb3..e645a9a47c 100644
--- a/activerecord/test/cases/fixtures_test.rb
+++ b/activerecord/test/cases/fixtures_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require 'models/post'
 require 'models/binary'
 require 'models/topic'
diff --git a/activerecord/test/cases/habtm_destroy_order_test.rb b/activerecord/test/cases/habtm_destroy_order_test.rb
index f2b91d977e..776ed3f517 100644
--- a/activerecord/test/cases/habtm_destroy_order_test.rb
+++ b/activerecord/test/cases/habtm_destroy_order_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require "models/lesson"
 require "models/student"
 
diff --git a/activerecord/test/cases/helper.rb b/activerecord/test/cases/helper.rb
index 9644ac1b02..7a214fa75a 100644
--- a/activerecord/test/cases/helper.rb
+++ b/activerecord/test/cases/helper.rb
@@ -1,5 +1,8 @@
 require File.expand_path('../../../../load_paths', __FILE__)
 
+test = File.expand_path('../..', __FILE__)
+$:.unshift(test) unless $:.include?('test') || $:.include?(test)
+
 lib = File.expand_path("#{File.dirname(__FILE__)}/../../lib")
 $:.unshift(lib) unless $:.include?('lib') || $:.include?(lib)
 
@@ -11,14 +14,13 @@ require 'mocha'
 
 require 'active_record'
 require 'active_support/dependencies'
-begin
-  require 'connection'
-rescue LoadError
-  # If we cannot load connection we assume that driver was not loaded for this test case, so we load sqlite3 as default one.
-  # This allows for running separate test cases by simply running test file.
-  connection_type = defined?(JRUBY_VERSION) ? 'jdbc' : 'native'
-  require "test/connections/#{connection_type}_sqlite3/connection"
-end
+
+require 'support/config'
+require 'support/connection'
+
+ARTest.connect
+
+# TODO: Move all these random hacks into the ARTest namespace and into the support/ dir
 
 # Show backtraces for deprecated behavior for quicker cleanup.
 ActiveSupport::Deprecation.debug = true
diff --git a/activerecord/test/cases/i18n_test.rb b/activerecord/test/cases/i18n_test.rb
index 469f513e68..d96dc5fba9 100644
--- a/activerecord/test/cases/i18n_test.rb
+++ b/activerecord/test/cases/i18n_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require 'models/topic'
 require 'models/reply'
 
@@ -43,4 +43,3 @@ class ActiveRecordI18nTests < ActiveRecord::TestCase
     assert_equal 'topic model', Reply.model_name.human
   end
 end
-
diff --git a/activerecord/test/cases/identity_map/middleware_test.rb b/activerecord/test/cases/identity_map/middleware_test.rb
index 60dcad4586..047192c244 100644
--- a/activerecord/test/cases/identity_map/middleware_test.rb
+++ b/activerecord/test/cases/identity_map/middleware_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../helper', __FILE__)
 
 module ActiveRecord
   module IdentityMap
diff --git a/activerecord/test/cases/identity_map_test.rb b/activerecord/test/cases/identity_map_test.rb
index a0e16400d2..d814f1cc92 100644
--- a/activerecord/test/cases/identity_map_test.rb
+++ b/activerecord/test/cases/identity_map_test.rb
@@ -1,5 +1,4 @@
-require "cases/helper"
-
+require File.expand_path('../helper', __FILE__)
 require 'models/developer'
 require 'models/project'
 require 'models/company'
@@ -140,7 +139,7 @@ class IdentityMapTest < ActiveRecord::TestCase
       assert_not_same(p1, p2)
     end
   end
-  
+
   def test_inherited_with_type_attribute_without_identity_map
     ActiveRecord::IdentityMap.without do
       c = comments(:sub_special_comment)
diff --git a/activerecord/test/cases/inheritance_test.rb b/activerecord/test/cases/inheritance_test.rb
index b5d8314541..5bfc572ea8 100644
--- a/activerecord/test/cases/inheritance_test.rb
+++ b/activerecord/test/cases/inheritance_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require 'models/company'
 require 'models/project'
 require 'models/subscriber'
diff --git a/activerecord/test/cases/invalid_date_test.rb b/activerecord/test/cases/invalid_date_test.rb
index 2de50b224c..65d326bc12 100644
--- a/activerecord/test/cases/invalid_date_test.rb
+++ b/activerecord/test/cases/invalid_date_test.rb
@@ -1,4 +1,4 @@
-require 'cases/helper'
+require File.expand_path('../helper', __FILE__)
 require 'models/topic'
 
 class InvalidDateTest < ActiveRecord::TestCase
diff --git a/activerecord/test/cases/invertible_migration_test.rb b/activerecord/test/cases/invertible_migration_test.rb
index afec64750e..d145ff7427 100644
--- a/activerecord/test/cases/invertible_migration_test.rb
+++ b/activerecord/test/cases/invertible_migration_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 
 module ActiveRecord
   class InvertibleMigrationTest < ActiveRecord::TestCase
diff --git a/activerecord/test/cases/json_serialization_test.rb b/activerecord/test/cases/json_serialization_test.rb
index d9e350abc0..aef7403a09 100644
--- a/activerecord/test/cases/json_serialization_test.rb
+++ b/activerecord/test/cases/json_serialization_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require 'models/contact'
 require 'models/post'
 require 'models/author'
diff --git a/activerecord/test/cases/lifecycle_test.rb b/activerecord/test/cases/lifecycle_test.rb
index 643e949087..7d47f7e21b 100644
--- a/activerecord/test/cases/lifecycle_test.rb
+++ b/activerecord/test/cases/lifecycle_test.rb
@@ -1,4 +1,4 @@
-require 'cases/helper'
+require File.expand_path('../helper', __FILE__)
 require 'models/topic'
 require 'models/developer'
 require 'models/reply'
diff --git a/activerecord/test/cases/locking_test.rb b/activerecord/test/cases/locking_test.rb
index 61baa55027..88861df86a 100644
--- a/activerecord/test/cases/locking_test.rb
+++ b/activerecord/test/cases/locking_test.rb
@@ -1,5 +1,5 @@
 require 'thread'
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require 'models/person'
 require 'models/job'
 require 'models/reader'
diff --git a/activerecord/test/cases/log_subscriber_test.rb b/activerecord/test/cases/log_subscriber_test.rb
index c6c6079490..f29ced4526 100644
--- a/activerecord/test/cases/log_subscriber_test.rb
+++ b/activerecord/test/cases/log_subscriber_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require "models/developer"
 require "models/post"
 require "active_support/log_subscriber/test_helper"
diff --git a/activerecord/test/cases/mass_assignment_security_test.rb b/activerecord/test/cases/mass_assignment_security_test.rb
index 33737e12a8..a41ce539c7 100644
--- a/activerecord/test/cases/mass_assignment_security_test.rb
+++ b/activerecord/test/cases/mass_assignment_security_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require 'models/company'
 require 'models/subscriber'
 require 'models/keyboard'
diff --git a/activerecord/test/cases/method_scoping_test.rb b/activerecord/test/cases/method_scoping_test.rb
index a0cb5dbdc5..52e76cb91a 100644
--- a/activerecord/test/cases/method_scoping_test.rb
+++ b/activerecord/test/cases/method_scoping_test.rb
@@ -2,7 +2,7 @@
 # All the tests were already ported to relation_scoping_test.rb when the new
 # relation scoping API was added.
 
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require 'models/post'
 require 'models/author'
 require 'models/developer'
diff --git a/activerecord/test/cases/migration/command_recorder_test.rb b/activerecord/test/cases/migration/command_recorder_test.rb
index 0f79c99e1a..986dc7173d 100644
--- a/activerecord/test/cases/migration/command_recorder_test.rb
+++ b/activerecord/test/cases/migration/command_recorder_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../helper', __FILE__)
 
 module ActiveRecord
   class Migration
diff --git a/activerecord/test/cases/migration_test.rb b/activerecord/test/cases/migration_test.rb
index bf7565a0d0..01f7575653 100644
--- a/activerecord/test/cases/migration_test.rb
+++ b/activerecord/test/cases/migration_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require 'bigdecimal/util'
 
 require 'models/person'
diff --git a/activerecord/test/cases/mixin_test.rb b/activerecord/test/cases/mixin_test.rb
index f927c13979..65101199b8 100644
--- a/activerecord/test/cases/mixin_test.rb
+++ b/activerecord/test/cases/mixin_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 
 class Mixin < ActiveRecord::Base
 end
diff --git a/activerecord/test/cases/modules_test.rb b/activerecord/test/cases/modules_test.rb
index a2041af16a..df5e66ea3c 100644
--- a/activerecord/test/cases/modules_test.rb
+++ b/activerecord/test/cases/modules_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require 'models/company_in_module'
 require 'models/shop'
 
diff --git a/activerecord/test/cases/multiple_db_test.rb b/activerecord/test/cases/multiple_db_test.rb
index bd51388e05..fca832e50b 100644
--- a/activerecord/test/cases/multiple_db_test.rb
+++ b/activerecord/test/cases/multiple_db_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require 'models/entrant'
 require 'models/bird'
 
diff --git a/activerecord/test/cases/named_scope_test.rb b/activerecord/test/cases/named_scope_test.rb
index 34188e4915..85bab2c7b5 100644
--- a/activerecord/test/cases/named_scope_test.rb
+++ b/activerecord/test/cases/named_scope_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require 'active_support/core_ext/array/random_access'
 require 'models/post'
 require 'models/topic'
diff --git a/activerecord/test/cases/nested_attributes_test.rb b/activerecord/test/cases/nested_attributes_test.rb
index 6568eb1d18..d94d4768a9 100644
--- a/activerecord/test/cases/nested_attributes_test.rb
+++ b/activerecord/test/cases/nested_attributes_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require "models/pirate"
 require "models/ship"
 require "models/ship_part"
diff --git a/activerecord/test/cases/persistence_test.rb b/activerecord/test/cases/persistence_test.rb
index 57d1441128..00543f7350 100644
--- a/activerecord/test/cases/persistence_test.rb
+++ b/activerecord/test/cases/persistence_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require 'models/post'
 require 'models/comment'
 require 'models/author'
diff --git a/activerecord/test/cases/pooled_connections_test.rb b/activerecord/test/cases/pooled_connections_test.rb
index 379cf5b44e..0321c5208f 100644
--- a/activerecord/test/cases/pooled_connections_test.rb
+++ b/activerecord/test/cases/pooled_connections_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require "models/project"
 require "timeout"
 
diff --git a/activerecord/test/cases/primary_keys_test.rb b/activerecord/test/cases/primary_keys_test.rb
index 05a41d8a0a..e810a155a0 100644
--- a/activerecord/test/cases/primary_keys_test.rb
+++ b/activerecord/test/cases/primary_keys_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require 'models/topic'
 require 'models/reply'
 require 'models/subscriber'
diff --git a/activerecord/test/cases/query_cache_test.rb b/activerecord/test/cases/query_cache_test.rb
index a61180cfaf..b08443b455 100644
--- a/activerecord/test/cases/query_cache_test.rb
+++ b/activerecord/test/cases/query_cache_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require 'models/topic'
 require 'models/task'
 require 'models/category'
diff --git a/activerecord/test/cases/quoting_test.rb b/activerecord/test/cases/quoting_test.rb
index 80ee74e41e..4cb38118c9 100644
--- a/activerecord/test/cases/quoting_test.rb
+++ b/activerecord/test/cases/quoting_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 
 module ActiveRecord
   module ConnectionAdapters
diff --git a/activerecord/test/cases/readonly_test.rb b/activerecord/test/cases/readonly_test.rb
index e21109baae..88168776b1 100644
--- a/activerecord/test/cases/readonly_test.rb
+++ b/activerecord/test/cases/readonly_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require 'models/post'
 require 'models/comment'
 require 'models/developer'
diff --git a/activerecord/test/cases/reflection_test.rb b/activerecord/test/cases/reflection_test.rb
index 58c78ab058..c7288baaba 100644
--- a/activerecord/test/cases/reflection_test.rb
+++ b/activerecord/test/cases/reflection_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require 'models/topic'
 require 'models/customer'
 require 'models/company'
diff --git a/activerecord/test/cases/relation_scoping_test.rb b/activerecord/test/cases/relation_scoping_test.rb
index a6e08f95d0..5067384fb6 100644
--- a/activerecord/test/cases/relation_scoping_test.rb
+++ b/activerecord/test/cases/relation_scoping_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require 'models/post'
 require 'models/author'
 require 'models/developer'
diff --git a/activerecord/test/cases/relation_test.rb b/activerecord/test/cases/relation_test.rb
index 12e58bd340..5ad089c875 100644
--- a/activerecord/test/cases/relation_test.rb
+++ b/activerecord/test/cases/relation_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require 'models/post'
 require 'models/comment'
 
diff --git a/activerecord/test/cases/relations_test.rb b/activerecord/test/cases/relations_test.rb
index fc9df8c7a3..ecc68b19d4 100644
--- a/activerecord/test/cases/relations_test.rb
+++ b/activerecord/test/cases/relations_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require 'models/tag'
 require 'models/tagging'
 require 'models/post'
diff --git a/activerecord/test/cases/reload_models_test.rb b/activerecord/test/cases/reload_models_test.rb
index 0d16a3526f..0ac46a2768 100644
--- a/activerecord/test/cases/reload_models_test.rb
+++ b/activerecord/test/cases/reload_models_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require 'models/owner'
 require 'models/pet'
 
diff --git a/activerecord/test/cases/sanitize_test.rb b/activerecord/test/cases/sanitize_test.rb
index 817897ceac..7c30bcf4c8 100644
--- a/activerecord/test/cases/sanitize_test.rb
+++ b/activerecord/test/cases/sanitize_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require 'models/binary'
 
 class SanitizeTest < ActiveRecord::TestCase
diff --git a/activerecord/test/cases/schema_dumper_test.rb b/activerecord/test/cases/schema_dumper_test.rb
index e8f2f44189..e765fdfe70 100644
--- a/activerecord/test/cases/schema_dumper_test.rb
+++ b/activerecord/test/cases/schema_dumper_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require 'stringio'
 
 
@@ -230,4 +230,3 @@ class SchemaDumperTest < ActiveRecord::TestCase
     assert_match %r{t.string[[:space:]]+"id",[[:space:]]+:null => false$}, match[2], "non-primary key id column not preserved"
   end
 end
-
diff --git a/activerecord/test/cases/serialization_test.rb b/activerecord/test/cases/serialization_test.rb
index 677d659f39..9c976f4999 100644
--- a/activerecord/test/cases/serialization_test.rb
+++ b/activerecord/test/cases/serialization_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require 'models/contact'
 require 'models/topic'
 require 'models/reply'
diff --git a/activerecord/test/cases/session_store/session_test.rb b/activerecord/test/cases/session_store/session_test.rb
index 669c0b7b4d..fb6f4cfd44 100644
--- a/activerecord/test/cases/session_store/session_test.rb
+++ b/activerecord/test/cases/session_store/session_test.rb
@@ -1,4 +1,4 @@
-require 'cases/helper'
+require File.expand_path('../../helper', __FILE__)
 require 'action_dispatch'
 require 'active_record/session_store'
 
diff --git a/activerecord/test/cases/session_store/sql_bypass.rb b/activerecord/test/cases/session_store/sql_bypass.rb
index 7402b2afd6..97ccb1f5c9 100644
--- a/activerecord/test/cases/session_store/sql_bypass.rb
+++ b/activerecord/test/cases/session_store/sql_bypass.rb
@@ -1,4 +1,4 @@
-require 'cases/helper'
+require File.expand_path('../../helper', __FILE__)
 require 'action_dispatch'
 require 'active_record/session_store'
 
diff --git a/activerecord/test/cases/timestamp_test.rb b/activerecord/test/cases/timestamp_test.rb
index ceb1452afd..ce6419c0da 100644
--- a/activerecord/test/cases/timestamp_test.rb
+++ b/activerecord/test/cases/timestamp_test.rb
@@ -1,4 +1,4 @@
-require 'cases/helper'
+require File.expand_path('../helper', __FILE__)
 require 'models/developer'
 require 'models/owner'
 require 'models/pet'
diff --git a/activerecord/test/cases/transaction_callbacks_test.rb b/activerecord/test/cases/transaction_callbacks_test.rb
index 85f222bca2..2d88e660b3 100644
--- a/activerecord/test/cases/transaction_callbacks_test.rb
+++ b/activerecord/test/cases/transaction_callbacks_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require 'models/topic'
 
 class TransactionCallbacksTest < ActiveRecord::TestCase
diff --git a/activerecord/test/cases/transactions_test.rb b/activerecord/test/cases/transactions_test.rb
index 110a18772f..fa33ffaed3 100644
--- a/activerecord/test/cases/transactions_test.rb
+++ b/activerecord/test/cases/transactions_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require 'models/topic'
 require 'models/reply'
 require 'models/developer'
diff --git a/activerecord/test/cases/unconnected_test.rb b/activerecord/test/cases/unconnected_test.rb
index f85fb4e5da..a6aaf1eb3d 100644
--- a/activerecord/test/cases/unconnected_test.rb
+++ b/activerecord/test/cases/unconnected_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 
 class TestRecord < ActiveRecord::Base
 end
diff --git a/activerecord/test/cases/validations/association_validation_test.rb b/activerecord/test/cases/validations/association_validation_test.rb
index 56e345990f..45290680f9 100644
--- a/activerecord/test/cases/validations/association_validation_test.rb
+++ b/activerecord/test/cases/validations/association_validation_test.rb
@@ -1,5 +1,5 @@
 # encoding: utf-8
-require "cases/helper"
+require File.expand_path('../../helper', __FILE__)
 require 'models/topic'
 require 'models/reply'
 require 'models/owner'
diff --git a/activerecord/test/cases/validations/i18n_generate_message_validation_test.rb b/activerecord/test/cases/validations/i18n_generate_message_validation_test.rb
index 628029f8df..922fb5dce7 100644
--- a/activerecord/test/cases/validations/i18n_generate_message_validation_test.rb
+++ b/activerecord/test/cases/validations/i18n_generate_message_validation_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../helper', __FILE__)
 require 'models/topic'
 
 class I18nGenerateMessageValidationTest < ActiveRecord::TestCase
diff --git a/activerecord/test/cases/validations/i18n_validation_test.rb b/activerecord/test/cases/validations/i18n_validation_test.rb
index 15b97c02c8..46f0c3c49d 100644
--- a/activerecord/test/cases/validations/i18n_validation_test.rb
+++ b/activerecord/test/cases/validations/i18n_validation_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../../helper', __FILE__)
 require 'models/topic'
 require 'models/reply'
 
diff --git a/activerecord/test/cases/validations/uniqueness_validation_test.rb b/activerecord/test/cases/validations/uniqueness_validation_test.rb
index 0f1b3667cc..218f673451 100644
--- a/activerecord/test/cases/validations/uniqueness_validation_test.rb
+++ b/activerecord/test/cases/validations/uniqueness_validation_test.rb
@@ -1,5 +1,5 @@
 # encoding: utf-8
-require "cases/helper"
+require File.expand_path('../../helper', __FILE__)
 require 'models/topic'
 require 'models/reply'
 require 'models/warehouse_thing'
diff --git a/activerecord/test/cases/validations_test.rb b/activerecord/test/cases/validations_test.rb
index c3e494866b..8764a22d40 100644
--- a/activerecord/test/cases/validations_test.rb
+++ b/activerecord/test/cases/validations_test.rb
@@ -1,5 +1,5 @@
 # encoding: utf-8
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require 'models/topic'
 require 'models/reply'
 require 'models/person'
diff --git a/activerecord/test/cases/xml_serialization_test.rb b/activerecord/test/cases/xml_serialization_test.rb
index 756c8a32eb..c48957e7a7 100644
--- a/activerecord/test/cases/xml_serialization_test.rb
+++ b/activerecord/test/cases/xml_serialization_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require 'models/contact'
 require 'models/post'
 require 'models/author'
diff --git a/activerecord/test/cases/yaml_serialization_test.rb b/activerecord/test/cases/yaml_serialization_test.rb
index 0b54c309d1..6caa782a97 100644
--- a/activerecord/test/cases/yaml_serialization_test.rb
+++ b/activerecord/test/cases/yaml_serialization_test.rb
@@ -1,4 +1,4 @@
-require "cases/helper"
+require File.expand_path('../helper', __FILE__)
 require 'models/topic'
 
 class YamlSerializationTest < ActiveRecord::TestCase
diff --git a/activerecord/test/config.example.yml b/activerecord/test/config.example.yml
new file mode 100644
index 0000000000..6ed38db66d
--- /dev/null
+++ b/activerecord/test/config.example.yml
@@ -0,0 +1,136 @@
+default_connection: <%= defined?(JRUBY_VERSION) ? 'jdbcsqlite3' : 'sqlite3' %>
+
+connections:
+  jdbcderby:
+    arunit:  activerecord_unittest
+    arunit2: activerecord_unittest2
+
+  jdbch2:
+    arunit:  activerecord_unittest
+    arunit2: activerecord_unittest2
+
+  jdbchsqldb:
+    arunit:  activerecord_unittest
+    arunit2: activerecord_unittest2
+
+  jdbcmysql:
+    arunit:
+      username: rails
+      encoding: utf8
+    arunit2:
+      username: rails
+      encoding: utf8
+
+  jdbcpostgresql:
+    arunit:
+      username: <%= ENV['user'] || 'rails' %>
+    arunit2:
+      username: <%= ENV['user'] || 'rails' %>
+
+  jdbcsqlite3:
+    arunit:
+      database: <%= FIXTURES_ROOT %>/fixture_database.sqlite3
+      timeout:  5000
+    arunit2:
+      database: <%= FIXTURES_ROOT %>/fixture_database_2.sqlite3
+      timeout:  5000
+
+  db2:
+    arunit:
+      host:     localhost
+      username: arunit
+      password: arunit
+      database: arunit
+    arunit2:
+      host:     localhost
+      username: arunit
+      password: arunit
+      database: arunit2
+
+  firebird:
+    arunit:
+      host: localhost
+      username: rails
+      password: rails
+      charset: UTF8
+    arunit2:
+      host: localhost
+      username: rails
+      password: rails
+      charset: UTF8
+
+  frontbase:
+    arunit:
+      host: localhost
+      username: rails
+      session_name: unittest-<%= $$ %>
+    arunit2:
+      host: localhost
+      username: rails
+      session_name: unittest-<%= $$ %>
+
+  mysql:
+    arunit:
+      username: rails
+      encoding: utf8
+    arunit2:
+      username: rails
+      encoding: utf8
+
+  mysql2:
+    arunit:
+      username: rails
+      encoding: utf8
+    arunit2:
+      username: rails
+      encoding: utf8
+
+  openbase:
+    arunit:
+      username: admin
+    arunit2:
+      username: admin
+
+  oracle:
+    arunit:
+      adapter: oracle_enhanced
+      database: <%= ENV['ARUNIT_DB_NAME'] || 'orcl' %>
+      username: arunit
+      password: arunit
+      emulate_oracle_adapter: true
+    arunit:
+      adapter: oracle_enhanced
+      database: <%= ENV['ARUNIT_DB_NAME'] || 'orcl' %>
+      username: arunit2
+      password: arunit2
+      emulate_oracle_adapter: true
+
+  postgresql:
+    arunit:
+      min_messages: warning
+    arunit2:
+      min_messages: warning
+
+  sqlite3:
+    arunit:
+      database: <%= FIXTURES_ROOT %>/fixture_database.sqlite3
+      timeout:  5000
+    arunit2:
+      database: <%= FIXTURES_ROOT %>/fixture_database_2.sqlite3
+      timeout:  5000
+
+  sqlite3_mem:
+    arunit:
+      adapter: sqlite3
+      database: ':memory:'
+    arunit2:
+      adapter: sqlite3
+      database: ':memory:'
+
+  sybase:
+    arunit:
+      host: database_ASE
+      username: sa
+    arunit2:
+      host: database_ASE
+      username: sa
diff --git a/activerecord/test/connections/db2.rb b/activerecord/test/connections/db2.rb
new file mode 100644
index 0000000000..f43b3fda57
--- /dev/null
+++ b/activerecord/test/connections/db2.rb
@@ -0,0 +1 @@
+ENV['ARCONN'] = 'db2'
diff --git a/activerecord/test/connections/firebird.rb b/activerecord/test/connections/firebird.rb
new file mode 100644
index 0000000000..fa874c0bb3
--- /dev/null
+++ b/activerecord/test/connections/firebird.rb
@@ -0,0 +1 @@
+ENV['ARCONN'] = 'firebird'
diff --git a/activerecord/test/connections/frontbase.rb b/activerecord/test/connections/frontbase.rb
new file mode 100644
index 0000000000..9d1d5597d4
--- /dev/null
+++ b/activerecord/test/connections/frontbase.rb
@@ -0,0 +1 @@
+ENV['ARCONN'] = 'frontbase'
diff --git a/activerecord/test/connections/jdbc_jdbcderby/connection.rb b/activerecord/test/connections/jdbc_jdbcderby/connection.rb
deleted file mode 100644
index 222ef5db38..0000000000
--- a/activerecord/test/connections/jdbc_jdbcderby/connection.rb
+++ /dev/null
@@ -1,18 +0,0 @@
-print "Using Derby via JRuby, activerecord-jdbc-adapter and activerecord-jdbcderby-adapter\n"
-require_dependency 'models/course'
-require 'logger'
-ActiveRecord::Base.logger = Logger.new("debug.log")
-
-ActiveRecord::Base.configurations = {
-  'arunit' => {
-    :adapter  => 'jdbcderby',
-    :database => 'activerecord_unittest'
-  },
-  'arunit2' => {
-    :adapter  => 'jdbcderby',
-    :database => 'activerecord_unittest2'
-  }
-}
-
-ActiveRecord::Base.establish_connection 'arunit'
-Course.establish_connection 'arunit2'
diff --git a/activerecord/test/connections/jdbc_jdbch2/connection.rb b/activerecord/test/connections/jdbc_jdbch2/connection.rb
deleted file mode 100644
index 9d2875e8e7..0000000000
--- a/activerecord/test/connections/jdbc_jdbch2/connection.rb
+++ /dev/null
@@ -1,18 +0,0 @@
-print "Using H2 via JRuby, activerecord-jdbc-adapter and activerecord-jdbch2-adapter\n"
-require_dependency 'models/course'
-require 'logger'
-ActiveRecord::Base.logger = Logger.new("debug.log")
-
-ActiveRecord::Base.configurations = {
-  'arunit' => {
-    :adapter  => 'jdbch2',
-    :database => 'activerecord_unittest'
-  },
-  'arunit2' => {
-    :adapter  => 'jdbch2',
-    :database => 'activerecord_unittest2'
-  }
-}
-
-ActiveRecord::Base.establish_connection 'arunit'
-Course.establish_connection 'arunit2'
diff --git a/activerecord/test/connections/jdbc_jdbchsqldb/connection.rb b/activerecord/test/connections/jdbc_jdbchsqldb/connection.rb
deleted file mode 100644
index fa943c2c76..0000000000
--- a/activerecord/test/connections/jdbc_jdbchsqldb/connection.rb
+++ /dev/null
@@ -1,18 +0,0 @@
-print "Using HSQLDB via JRuby, activerecord-jdbc-adapter and activerecord-jdbchsqldb-adapter\n"
-require_dependency 'models/course'
-require 'logger'
-ActiveRecord::Base.logger = Logger.new("debug.log")
-
-ActiveRecord::Base.configurations = {
-  'arunit' => {
-    :adapter  => 'jdbchsqldb',
-    :database => 'activerecord_unittest'
-  },
-  'arunit2' => {
-    :adapter  => 'jdbchsqldb',
-    :database => 'activerecord_unittest2'
-  }
-}
-
-ActiveRecord::Base.establish_connection 'arunit'
-Course.establish_connection 'arunit2'
diff --git a/activerecord/test/connections/jdbc_jdbcmysql/connection.rb b/activerecord/test/connections/jdbc_jdbcmysql/connection.rb
deleted file mode 100644
index e2517a50eb..0000000000
--- a/activerecord/test/connections/jdbc_jdbcmysql/connection.rb
+++ /dev/null
@@ -1,26 +0,0 @@
-print "Using MySQL via JRuby, activerecord-jdbc-adapter and activerecord-jdbcmysql-adapter\n"
-require_dependency 'models/course'
-require 'logger'
-
-ActiveRecord::Base.logger = Logger.new("debug.log")
-
-# GRANT ALL PRIVILEGES ON activerecord_unittest.* to 'rails'@'localhost';
-# GRANT ALL PRIVILEGES ON activerecord_unittest2.* to 'rails'@'localhost';
-
-ActiveRecord::Base.configurations = {
-  'arunit' => {
-    :adapter  => 'jdbcmysql',
-    :username => 'rails',
-    :encoding => 'utf8',
-    :database => 'activerecord_unittest',
-  },
-  'arunit2' => {
-    :adapter  => 'jdbcmysql',
-    :username => 'rails',
-    :database => 'activerecord_unittest2'
-  }
-}
-
-ActiveRecord::Base.establish_connection 'arunit'
-Course.establish_connection 'arunit2'
-
diff --git a/activerecord/test/connections/jdbc_jdbcpostgresql/connection.rb b/activerecord/test/connections/jdbc_jdbcpostgresql/connection.rb
deleted file mode 100644
index 0685da4433..0000000000
--- a/activerecord/test/connections/jdbc_jdbcpostgresql/connection.rb
+++ /dev/null
@@ -1,26 +0,0 @@
-print "Using Postgrsql via JRuby, activerecord-jdbc-adapter and activerecord-postgresql-adapter\n"
-require_dependency 'models/course'
-require 'logger'
-
-ActiveRecord::Base.logger = Logger.new("debug.log")
-
-# createuser rails --createdb --no-superuser --no-createrole
-# createdb -O rails activerecord_unittest
-# createdb -O rails activerecord_unittest2
-
-ActiveRecord::Base.configurations = {
-  'arunit' => {
-    :adapter  => 'jdbcpostgresql',
-    :username => ENV['USER'] || 'rails',
-    :database => 'activerecord_unittest'
-  },
-  'arunit2' => {
-    :adapter  => 'jdbcpostgresql',
-    :username => ENV['USER'] || 'rails',
-    :database => 'activerecord_unittest2'
-  }
-}
-
-ActiveRecord::Base.establish_connection 'arunit'
-Course.establish_connection 'arunit2'
-
diff --git a/activerecord/test/connections/jdbc_jdbcsqlite3/connection.rb b/activerecord/test/connections/jdbc_jdbcsqlite3/connection.rb
deleted file mode 100644
index 26d4676ff3..0000000000
--- a/activerecord/test/connections/jdbc_jdbcsqlite3/connection.rb
+++ /dev/null
@@ -1,25 +0,0 @@
-print "Using SQLite3 via JRuby, activerecord-jdbc-adapter and activerecord-jdbcsqlite3-adapter\n"
-require_dependency 'models/course'
-require 'logger'
-ActiveRecord::Base.logger = Logger.new("debug.log")
-
-class SqliteError < StandardError
-end
-
-BASE_DIR = FIXTURES_ROOT
-sqlite_test_db  = "#{BASE_DIR}/fixture_database.sqlite3"
-sqlite_test_db2 = "#{BASE_DIR}/fixture_database_2.sqlite3"
-
-def make_connection(clazz, db_file)
-  ActiveRecord::Base.configurations = { clazz.name => { :adapter => 'jdbcsqlite3', :database => db_file, :timeout => 5000 } }
-  unless File.exist?(db_file)
-    puts "SQLite3 database not found at #{db_file}. Rebuilding it."
-    sqlite_command = %Q{sqlite3 "#{db_file}" "create table a (a integer); drop table a;"}
-    puts "Executing '#{sqlite_command}'"
-    raise SqliteError.new("Seems that there is no sqlite3 executable available") unless system(sqlite_command)
-  end
-  clazz.establish_connection(clazz.name)
-end
-
-make_connection(ActiveRecord::Base, sqlite_test_db)
-make_connection(Course, sqlite_test_db2)
diff --git a/activerecord/test/connections/jdbcderby.rb b/activerecord/test/connections/jdbcderby.rb
new file mode 100644
index 0000000000..1c7b63ccdc
--- /dev/null
+++ b/activerecord/test/connections/jdbcderby.rb
@@ -0,0 +1 @@
+ENV['ARCONN'] = 'jdbcderby'
diff --git a/activerecord/test/connections/jdbch2.rb b/activerecord/test/connections/jdbch2.rb
new file mode 100644
index 0000000000..d2fb177ae3
--- /dev/null
+++ b/activerecord/test/connections/jdbch2.rb
@@ -0,0 +1 @@
+ENV['ARCONN'] = 'jdbch2'
diff --git a/activerecord/test/connections/jdbchsqldb.rb b/activerecord/test/connections/jdbchsqldb.rb
new file mode 100644
index 0000000000..22e6d8729e
--- /dev/null
+++ b/activerecord/test/connections/jdbchsqldb.rb
@@ -0,0 +1 @@
+ENV['ARCONN'] = 'jdbchsqldb'
diff --git a/activerecord/test/connections/jdbcmysql.rb b/activerecord/test/connections/jdbcmysql.rb
new file mode 100644
index 0000000000..f1aaad93a3
--- /dev/null
+++ b/activerecord/test/connections/jdbcmysql.rb
@@ -0,0 +1 @@
+ENV['ARCONN'] = 'jdbcmysql'
diff --git a/activerecord/test/connections/jdbcpostgresql.rb b/activerecord/test/connections/jdbcpostgresql.rb
new file mode 100644
index 0000000000..6809115f36
--- /dev/null
+++ b/activerecord/test/connections/jdbcpostgresql.rb
@@ -0,0 +1 @@
+ENV['ARCONN'] = 'jdbcpostgresql'
diff --git a/activerecord/test/connections/jdbcsqlite3.rb b/activerecord/test/connections/jdbcsqlite3.rb
new file mode 100644
index 0000000000..9cc872905a
--- /dev/null
+++ b/activerecord/test/connections/jdbcsqlite3.rb
@@ -0,0 +1 @@
+ENV['ARCONN'] = 'jdbcsqlite3'
diff --git a/activerecord/test/connections/mysql.rb b/activerecord/test/connections/mysql.rb
new file mode 100644
index 0000000000..2f30603098
--- /dev/null
+++ b/activerecord/test/connections/mysql.rb
@@ -0,0 +1 @@
+ENV['ARCONN'] = 'mysql'
diff --git a/activerecord/test/connections/mysql2.rb b/activerecord/test/connections/mysql2.rb
new file mode 100644
index 0000000000..10aa9171bd
--- /dev/null
+++ b/activerecord/test/connections/mysql2.rb
@@ -0,0 +1 @@
+ENV['ARCONN'] = 'mysql2'
diff --git a/activerecord/test/connections/native_db2/connection.rb b/activerecord/test/connections/native_db2/connection.rb
deleted file mode 100644
index 324315d2c8..0000000000
--- a/activerecord/test/connections/native_db2/connection.rb
+++ /dev/null
@@ -1,25 +0,0 @@
-print "Using native DB2\n"
-require_dependency 'models/course'
-require 'logger'
-
-ActiveRecord::Base.logger = Logger.new("debug.log")
-
-ActiveRecord::Base.configurations = {
-  'arunit' => {
-    :adapter => 'db2',
-    :host => 'localhost',
-    :username => 'arunit',
-    :password => 'arunit',
-    :database => 'arunit'
-  },
-  'arunit2' => {
-    :adapter => 'db2',
-    :host => 'localhost',
-    :username => 'arunit',
-    :password => 'arunit',
-    :database => 'arunit2'
-  }
-}
-
-ActiveRecord::Base.establish_connection 'arunit'
-Course.establish_connection 'arunit2'
diff --git a/activerecord/test/connections/native_firebird/connection.rb b/activerecord/test/connections/native_firebird/connection.rb
deleted file mode 100644
index 67a936ca97..0000000000
--- a/activerecord/test/connections/native_firebird/connection.rb
+++ /dev/null
@@ -1,26 +0,0 @@
-print "Using native Firebird\n"
-require_dependency 'models/course'
-require 'logger'
-
-ActiveRecord::Base.logger = Logger.new("debug.log")
-
-ActiveRecord::Base.configurations = {
-  'arunit' => {
-    :adapter => 'firebird',
-    :host => 'localhost',
-    :username => 'rails',
-    :password => 'rails',
-    :database => 'activerecord_unittest',
-    :charset => 'UTF8'
-  },
-  'arunit2' => {
-    :adapter => 'firebird',
-    :host => 'localhost',
-    :username => 'rails',
-    :password => 'rails',
-    :database => 'activerecord_unittest2'
-  }
-}
-
-ActiveRecord::Base.establish_connection 'arunit'
-Course.establish_connection 'arunit2'
diff --git a/activerecord/test/connections/native_frontbase/connection.rb b/activerecord/test/connections/native_frontbase/connection.rb
deleted file mode 100644
index c01d864a8b..0000000000
--- a/activerecord/test/connections/native_frontbase/connection.rb
+++ /dev/null
@@ -1,27 +0,0 @@
-puts 'Using native Frontbase'
-require_dependency 'models/course'
-require 'logger'
-
-ActiveRecord::Base.logger = Logger.new("debug.log")
-
-ActiveRecord::Base.configurations = {
-  'arunit' => {
-    :adapter => 'frontbase',
-    :host => 'localhost',
-    :username => 'rails',
-    :password => '',
-    :database => 'activerecord_unittest',
-    :session_name => "unittest-#{$$}"
-  },
-  'arunit2' => {
-    :adapter => 'frontbase',
-    :host => 'localhost',
-    :username => 'rails',
-    :password => '',
-    :database => 'activerecord_unittest2',
-    :session_name => "unittest-#{$$}"
-  }
-}
-
-ActiveRecord::Base.establish_connection 'arunit'
-Course.establish_connection 'arunit2'
diff --git a/activerecord/test/connections/native_mysql/connection.rb b/activerecord/test/connections/native_mysql/connection.rb
deleted file mode 100644
index 140e06d631..0000000000
--- a/activerecord/test/connections/native_mysql/connection.rb
+++ /dev/null
@@ -1,25 +0,0 @@
-print "Using native MySQL\n"
-require_dependency 'models/course'
-require 'logger'
-
-ActiveRecord::Base.logger = Logger.new("debug.log")
-
-# GRANT ALL PRIVILEGES ON activerecord_unittest.* to 'rails'@'localhost';
-# GRANT ALL PRIVILEGES ON activerecord_unittest2.* to 'rails'@'localhost';
-
-ActiveRecord::Base.configurations = {
-  'arunit' => {
-    :adapter  => 'mysql',
-    :username => 'rails',
-    :encoding => 'utf8',
-    :database => 'activerecord_unittest',
-  },
-  'arunit2' => {
-    :adapter  => 'mysql',
-    :username => 'rails',
-    :database => 'activerecord_unittest2'
-  }
-}
-
-ActiveRecord::Base.establish_connection 'arunit'
-Course.establish_connection 'arunit2'
diff --git a/activerecord/test/connections/native_mysql2/connection.rb b/activerecord/test/connections/native_mysql2/connection.rb
deleted file mode 100644
index c6f198b1ac..0000000000
--- a/activerecord/test/connections/native_mysql2/connection.rb
+++ /dev/null
@@ -1,25 +0,0 @@
-print "Using native Mysql2\n"
-require_dependency 'models/course'
-require 'logger'
-
-ActiveRecord::Base.logger = Logger.new("debug.log")
-
-# GRANT ALL PRIVILEGES ON activerecord_unittest.* to 'rails'@'localhost';
-# GRANT ALL PRIVILEGES ON activerecord_unittest2.* to 'rails'@'localhost';
-
-ActiveRecord::Base.configurations = {
-  'arunit' => {
-    :adapter  => 'mysql2',
-    :username => 'rails',
-    :encoding => 'utf8',
-    :database => 'activerecord_unittest',
-  },
-  'arunit2' => {
-    :adapter  => 'mysql2',
-    :username => 'rails',
-    :database => 'activerecord_unittest2'
-  }
-}
-
-ActiveRecord::Base.establish_connection 'arunit'
-Course.establish_connection 'arunit2'
diff --git a/activerecord/test/connections/native_openbase/connection.rb b/activerecord/test/connections/native_openbase/connection.rb
deleted file mode 100644
index 655cb9ca26..0000000000
--- a/activerecord/test/connections/native_openbase/connection.rb
+++ /dev/null
@@ -1,21 +0,0 @@
-print "Using native OpenBase\n"
-require_dependency 'models/course'
-require 'logger'
-
-ActiveRecord::Base.logger = Logger.new("debug.log")
-
-ActiveRecord::Base.configurations = {
-  'arunit' => {
-    :adapter  => 'openbase',
-    :username => 'admin',
-    :database => 'activerecord_unittest',
-  },
-  'arunit2' => {
-    :adapter  => 'openbase',
-    :username => 'admin',
-    :database => 'activerecord_unittest2'
-  }
-}
-
-ActiveRecord::Base.establish_connection 'arunit'
-Course.establish_connection 'arunit2'
diff --git a/activerecord/test/connections/native_oracle/connection.rb b/activerecord/test/connections/native_oracle/connection.rb
deleted file mode 100644
index 99f921879c..0000000000
--- a/activerecord/test/connections/native_oracle/connection.rb
+++ /dev/null
@@ -1,35 +0,0 @@
-# uses oracle_enhanced adapter in ENV['ORACLE_ENHANCED_PATH'] or from github.com/rsim/oracle-enhanced.git
-require 'active_record/connection_adapters/oracle_enhanced_adapter'
-
-# otherwise failed with silence_warnings method missing exception
-require 'active_support/core_ext/kernel/reporting'
-
-print "Using Oracle\n"
-require_dependency 'models/course'
-require 'logger'
-
-ActiveRecord::Base.logger = Logger.new("debug.log")
-
-# Set these to your database connection strings
-ENV['ARUNIT_DB_NAME'] ||= 'orcl'
-
-ActiveRecord::Base.configurations = {
-  'arunit' => {
-    :adapter  => 'oracle_enhanced',
-    :database => ENV['ARUNIT_DB_NAME'],
-    :username => 'arunit',
-    :password => 'arunit',
-    :emulate_oracle_adapter => true
-  },
-  'arunit2' => {
-    :adapter  => 'oracle_enhanced',
-    :database => ENV['ARUNIT_DB_NAME'],
-    :username => 'arunit2',
-    :password => 'arunit2',
-    :emulate_oracle_adapter => true
-  }
-}
-
-ActiveRecord::Base.establish_connection 'arunit'
-Course.establish_connection 'arunit2'
-
diff --git a/activerecord/test/connections/native_postgresql/connection.rb b/activerecord/test/connections/native_postgresql/connection.rb
deleted file mode 100644
index 3b5ff90003..0000000000
--- a/activerecord/test/connections/native_postgresql/connection.rb
+++ /dev/null
@@ -1,21 +0,0 @@
-print "Using native PostgreSQL\n"
-require_dependency 'models/course'
-require 'logger'
-
-ActiveRecord::Base.logger = Logger.new("debug.log")
-
-ActiveRecord::Base.configurations = {
-  'arunit' => {
-    :adapter  => 'postgresql',
-    :database => 'activerecord_unittest',
-    :min_messages => 'warning'
-  },
-  'arunit2' => {
-    :adapter  => 'postgresql',
-    :database => 'activerecord_unittest2',
-    :min_messages => 'warning'
-  }
-}
-
-ActiveRecord::Base.establish_connection 'arunit'
-Course.establish_connection 'arunit2'
diff --git a/activerecord/test/connections/native_sqlite3/connection.rb b/activerecord/test/connections/native_sqlite3/connection.rb
deleted file mode 100644
index c2aff5551f..0000000000
--- a/activerecord/test/connections/native_sqlite3/connection.rb
+++ /dev/null
@@ -1,16 +0,0 @@
-print "Using native SQLite3\n"
-require_dependency 'models/course'
-require 'logger'
-ActiveRecord::Base.logger = Logger.new("debug.log")
-
-BASE_DIR = FIXTURES_ROOT
-sqlite_test_db  = "#{BASE_DIR}/fixture_database.sqlite3"
-sqlite_test_db2 = "#{BASE_DIR}/fixture_database_2.sqlite3"
-
-def make_connection(clazz, db_file)
-  ActiveRecord::Base.configurations = { clazz.name => { :adapter => 'sqlite3', :database => db_file, :timeout => 5000 } }
-  clazz.establish_connection(clazz.name)
-end
-
-make_connection(ActiveRecord::Base, sqlite_test_db)
-make_connection(Course, sqlite_test_db2)
diff --git a/activerecord/test/connections/native_sqlite3_mem/connection.rb b/activerecord/test/connections/native_sqlite3_mem/connection.rb
deleted file mode 100644
index 14e10900d1..0000000000
--- a/activerecord/test/connections/native_sqlite3_mem/connection.rb
+++ /dev/null
@@ -1,19 +0,0 @@
-# This file connects to an in-memory SQLite3 database, which is a very fast way to run the tests.
-# The downside is that disconnect from the database results in the database effectively being
-# wiped. For this reason, pooled_connections_test.rb is disabled when using an in-memory database.
-
-print "Using native SQLite3 (in memory)\n"
-require_dependency 'models/course'
-require 'logger'
-ActiveRecord::Base.logger = Logger.new("debug.log")
-
-class SqliteError < StandardError
-end
-
-def make_connection(clazz)
-  ActiveRecord::Base.configurations = { clazz.name => { :adapter => 'sqlite3', :database  => ':memory:' } }
-  clazz.establish_connection(clazz.name)
-end
-
-make_connection(ActiveRecord::Base)
-make_connection(Course)
diff --git a/activerecord/test/connections/native_sybase/connection.rb b/activerecord/test/connections/native_sybase/connection.rb
deleted file mode 100644
index 3282d26922..0000000000
--- a/activerecord/test/connections/native_sybase/connection.rb
+++ /dev/null
@@ -1,23 +0,0 @@
-print "Using native Sybase Open Client\n"
-require_dependency 'models/course'
-require 'logger'
-
-ActiveRecord::Base.logger = Logger.new("debug.log")
-
-ActiveRecord::Base.configurations = {
-  'arunit' => {
-    :adapter  => 'sybase',
-    :host     => 'database_ASE',
-    :username => 'sa',
-    :database => 'activerecord_unittest'
-  },
-  'arunit2' => {
-    :adapter  => 'sybase',
-    :host     => 'database_ASE',
-    :username => 'sa',
-    :database => 'activerecord_unittest2'
-  }
-}
-
-ActiveRecord::Base.establish_connection 'arunit'
-Course.establish_connection 'arunit2'
diff --git a/activerecord/test/connections/openbase.rb b/activerecord/test/connections/openbase.rb
new file mode 100644
index 0000000000..bf072579f4
--- /dev/null
+++ b/activerecord/test/connections/openbase.rb
@@ -0,0 +1 @@
+ENV['ARCONN'] = 'openbase'
diff --git a/activerecord/test/connections/oracle.rb b/activerecord/test/connections/oracle.rb
new file mode 100644
index 0000000000..70e92b1424
--- /dev/null
+++ b/activerecord/test/connections/oracle.rb
@@ -0,0 +1 @@
+ENV['ARCONN'] = 'oracle'
diff --git a/activerecord/test/connections/postgresql.rb b/activerecord/test/connections/postgresql.rb
new file mode 100644
index 0000000000..b8bfb6e846
--- /dev/null
+++ b/activerecord/test/connections/postgresql.rb
@@ -0,0 +1 @@
+ENV['ARCONN'] = 'postgresql'
diff --git a/activerecord/test/connections/sqlite3.rb b/activerecord/test/connections/sqlite3.rb
new file mode 100644
index 0000000000..e5c75657a5
--- /dev/null
+++ b/activerecord/test/connections/sqlite3.rb
@@ -0,0 +1 @@
+ENV['ARCONN'] = 'sqlite3'
diff --git a/activerecord/test/connections/sqlite3_mem.rb b/activerecord/test/connections/sqlite3_mem.rb
new file mode 100644
index 0000000000..900a5c7947
--- /dev/null
+++ b/activerecord/test/connections/sqlite3_mem.rb
@@ -0,0 +1 @@
+ENV['ARCONN'] = 'sqlite3_mem'
diff --git a/activerecord/test/connections/sybase.rb b/activerecord/test/connections/sybase.rb
new file mode 100644
index 0000000000..7decdf7f39
--- /dev/null
+++ b/activerecord/test/connections/sybase.rb
@@ -0,0 +1 @@
+ENV['ARCONN'] = 'sybase'
diff --git a/activerecord/test/support/config.rb b/activerecord/test/support/config.rb
new file mode 100644
index 0000000000..2760d88d20
--- /dev/null
+++ b/activerecord/test/support/config.rb
@@ -0,0 +1,39 @@
+require 'yaml'
+require 'erubis'
+require 'fileutils'
+
+module ARTest
+  class << self
+    def config
+      @config ||= read_config
+    end
+
+    private
+
+    def read_config
+      unless File.exist?(TEST_ROOT + '/config.yml')
+        FileUtils.cp TEST_ROOT + '/config.example.yml', TEST_ROOT + '/config.yml'
+      end
+
+      raw = File.read(TEST_ROOT + '/config.yml')
+      erb = Erubis::Eruby.new(raw)
+      expand_config(YAML.parse(erb.result(binding)).transform)
+    end
+
+    def expand_config(config)
+      config['connections'].each do |adapter, connection|
+        dbs = [['arunit', 'activerecord_unittest'], ['arunit2', 'activerecord_unittest']]
+        dbs.each do |name, dbname|
+          unless connection[name].is_a?(Hash)
+            connection[name] = { 'database' => connection[name] }
+          end
+
+          connection[name]['database'] ||= dbname
+          connection[name]['adapter']  ||= adapter
+        end
+      end
+
+      config
+    end
+  end
+end
diff --git a/activerecord/test/support/connection.rb b/activerecord/test/support/connection.rb
new file mode 100644
index 0000000000..f4123c694d
--- /dev/null
+++ b/activerecord/test/support/connection.rb
@@ -0,0 +1,13 @@
+require 'logger'
+require_dependency 'models/course'
+
+module ARTest
+  def self.connect
+    connection_name = ENV['ARCONN'] || config['default_connection']
+    puts "Using #{connection_name}"
+    ActiveRecord::Base.logger = Logger.new("debug.log")
+    ActiveRecord::Base.configurations = config['connections'][connection_name]
+    ActiveRecord::Base.establish_connection 'arunit'
+    Course.establish_connection 'arunit2'
+  end
+end