3 files changed, 24 insertions, 2 deletions
diff --git a/activerecord/test/support/connection.rb b/activerecord/test/support/connection.rb
index 196b3a9493..d11fd9cfc1 100644
--- a/activerecord/test/support/connection.rb
+++ b/activerecord/test/support/connection.rb
@@ -15,7 +15,7 @@ module ARTest
     puts "Using #{connection_name}"
     ActiveRecord::Base.logger = ActiveSupport::Logger.new("debug.log", 0, 100 * 1024 * 1024)
     ActiveRecord::Base.configurations = connection_config
-    ActiveRecord::Base.establish_connection 'arunit'
-    ARUnit2Model.establish_connection 'arunit2'
+    ActiveRecord::Base.establish_connection :arunit
+    ARUnit2Model.establish_connection :arunit2
   end
 end
diff --git a/activerecord/test/support/connection_helper.rb b/activerecord/test/support/connection_helper.rb
new file mode 100644
index 0000000000..4a19e5df44
--- /dev/null
+++ b/activerecord/test/support/connection_helper.rb
@@ -0,0 +1,14 @@
+module ConnectionHelper
+  def run_without_connection
+    original_connection = ActiveRecord::Base.remove_connection
+    yield original_connection
+  ensure
+    ActiveRecord::Base.establish_connection(original_connection)
+  end
+
+  # Used to drop all cache query plans in tests.
+  def reset_connection
+    original_connection = ActiveRecord::Base.remove_connection
+    ActiveRecord::Base.establish_connection(original_connection)
+  end
+end
diff --git a/activerecord/test/support/ddl_helper.rb b/activerecord/test/support/ddl_helper.rb
new file mode 100644
index 0000000000..0107babaaf
--- /dev/null
+++ b/activerecord/test/support/ddl_helper.rb
@@ -0,0 +1,8 @@
+module DdlHelper
+  def with_example_table(connection, table_name, definition = nil)
+    connection.exec_query("CREATE TABLE #{table_name}(#{definition})")
+    yield
+  ensure
+    connection.exec_query("DROP TABLE #{table_name}")
+  end
+end