[MODEL] Added code for establishing ActiveRecord connections to test classes

With ActiveRecord 3.x, the connection setup in the main `setup` method doesn't
seem to be called properly.

Author: karmi

elasticsearch-model/test/integration/active_record_associations_parent_child.rb

@@ -1,6 +1,9 @@
 require 'test_helper'
 require 'active_record'
 
+# Needed for ActiveRecord 3.x ?
+ActiveRecord::Base.establish_connection( :adapter => 'sqlite3', :database => ":memory:" ) unless ActiveRecord::Base.connected?
+
 class Question < ActiveRecord::Base
   include Elasticsearch::Model
 

elasticsearch-model/test/integration/active_record_associations_test.rb

@@ -1,6 +1,9 @@
 require 'test_helper'
 require 'active_record'
 
+# Needed for ActiveRecord 3.x ?
+ActiveRecord::Base.establish_connection( :adapter => 'sqlite3', :database => ":memory:" ) unless ActiveRecord::Base.connected?
+
 module Elasticsearch
   module Model
     class ActiveRecordAssociationsIntegrationTest < Elasticsearch::Test::IntegrationTestCase

elasticsearch-model/test/integration/active_record_basic_test.rb

@@ -3,6 +3,9 @@
 
 puts "ActiveRecord #{ActiveRecord::VERSION::STRING}", '-'*80
 
+# Needed for ActiveRecord 3.x ?
+ActiveRecord::Base.establish_connection( :adapter => 'sqlite3', :database => ":memory:" ) unless ActiveRecord::Base.connected?
+
 module Elasticsearch
   module Model
     class ActiveRecordBasicIntegrationTest < Elasticsearch::Test::IntegrationTestCase

elasticsearch-model/test/integration/active_record_custom_serialization_test.rb

@@ -1,6 +1,9 @@
 require 'test_helper'
 require 'active_record'
 
+# Needed for ActiveRecord 3.x ?
+ActiveRecord::Base.establish_connection( :adapter => 'sqlite3', :database => ":memory:" ) unless ActiveRecord::Base.connected?
+
 module Elasticsearch
   module Model
     class ActiveRecordCustomSerializationTest < Elasticsearch::Test::IntegrationTestCase

elasticsearch-model/test/integration/active_record_import_test.rb

@@ -1,6 +1,9 @@
 require 'test_helper'
 require 'active_record'
 
+# Needed for ActiveRecord 3.x ?
+ActiveRecord::Base.establish_connection( :adapter => 'sqlite3', :database => ":memory:" ) unless ActiveRecord::Base.connected?
+
 module Elasticsearch
   module Model
     class ActiveRecordImportIntegrationTest < Elasticsearch::Test::IntegrationTestCase

elasticsearch-model/test/integration/active_record_namespaced_model_test.rb

@@ -1,6 +1,9 @@
 require 'test_helper'
 require 'active_record'
 
+# Needed for ActiveRecord 3.x ?
+ActiveRecord::Base.establish_connection( :adapter => 'sqlite3', :database => ":memory:" ) unless ActiveRecord::Base.connected?
+
 module Elasticsearch
   module Model
     class ActiveRecordNamespacedModelIntegrationTest < Elasticsearch::Test::IntegrationTestCase

elasticsearch-model/test/integration/active_record_pagination_test.rb

@@ -1,6 +1,9 @@
 require 'test_helper'
 require 'active_record'
 
+# Needed for ActiveRecord 3.x ?
+ActiveRecord::Base.establish_connection( :adapter => 'sqlite3', :database => ":memory:" ) unless ActiveRecord::Base.connected?
+
 module Elasticsearch
   module Model
     class ActiveRecordPaginationTest < Elasticsearch::Test::IntegrationTestCase

elasticsearch-model/test/integration/dynamic_index_name_test.rb

@@ -1,6 +1,9 @@
 require 'test_helper'
 require 'active_record'
 
+# Needed for ActiveRecord 3.x ?
+ActiveRecord::Base.establish_connection( :adapter => 'sqlite3', :database => ":memory:" ) unless ActiveRecord::Base.connected?
+
 module Elasticsearch
   module Model
     class DynamicIndexNameTest < Elasticsearch::Test::IntegrationTestCase

elasticsearch-model/test/integration/multiple_models_test.rb

@@ -1,6 +1,9 @@
 require 'test_helper'
 require 'active_record'
 
+# Needed for ActiveRecord 3.x ?
+ActiveRecord::Base.establish_connection( :adapter => 'sqlite3', :database => ":memory:" ) unless ActiveRecord::Base.connected?
+
 Mongo.setup!
 
 module Elasticsearch