1 files changed, 15 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/test_case.rb b/activerecord/lib/active_record/test_case.rb
index ffaa41282f..eabf06fc3b 100644
--- a/activerecord/lib/active_record/test_case.rb
+++ b/activerecord/lib/active_record/test_case.rb
@@ -43,5 +43,20 @@ module ActiveRecord
     def assert_no_queries(&block)
       assert_queries(0, &block)
     end
+
+    def self.use_concurrent_connections
+      setup :connection_allow_concurrency_setup
+      teardown :connection_allow_concurrency_teardown
+    end
+
+    def connection_allow_concurrency_setup
+      @connection = ActiveRecord::Base.remove_connection
+      ActiveRecord::Base.establish_connection(@connection.merge({:allow_concurrency => true}))
+    end
+
+    def connection_allow_concurrency_teardown
+      ActiveRecord::Base.clear_all_connections!
+      ActiveRecord::Base.establish_connection(@connection)
+    end
   end
 end