Re-organized Elasticsearch and DatabaseCleaner rspec configuration

This configuration has been moved to separate files in an effort to begin cleaning spec_helper.rb.

spec/spec_helper.rb

@@ -14,6 +14,9 @@ require 'rack/test'
 require 'yajl'
 require 'database_cleaner'
 
+require 'support/database_cleaner'
+require 'support/elasticsearch'
+
 # setup test environment
 set :environment, :test
 set :run, false
@@ -36,35 +39,13 @@ def set_api_key_header
   current_session.header "X-Edx-Api-Key", TEST_API_KEY
 end
 
-def delete_es_index
-  Tire.index Content::ES_INDEX_NAME do delete end
-end
 
-def create_es_index
-  new_index = Tire.index Content::ES_INDEX_NAME
-  new_index.create
-  [CommentThread, Comment].each do |klass|
-    klass.put_search_index_mapping
-  end
-end
-
-def refresh_es_index
-  # we are using the same index for two types, which is against the
-  # grain of Tire's design.  This is why this method works for both
-  # comment_threads and comments.
-  CommentThread.tire.index.refresh
-end
 
 RSpec.configure do |config|
   config.include Rack::Test::Methods
   config.treat_symbols_as_metadata_keys_with_true_values = true
   config.filter_run focus: true
   config.run_all_when_everything_filtered = true
-  config.before(:each) do
-    DatabaseCleaner.clean
-    delete_es_index
-    create_es_index
-  end
 end
 
 Mongoid.configure do |config|

spec/support/database_cleaner.rb

+require 'database_cleaner'
+
+RSpec.configure do |config|
+  config.before(:suite) do
+    # Mongoid only supports truncation.
+    DatabaseCleaner.strategy = :truncation
+    DatabaseCleaner.clean_with(:truncation)
+  end
+
+  config.around(:each) do |example|
+    DatabaseCleaner.cleaning do
+      example.run
+    end
+  end
+end

spec/support/elasticsearch.rb

+def delete_es_index
+  Tire.index Content::ES_INDEX_NAME do
+    delete
+  end
+end
+
+def create_es_index
+  new_index = Tire.index Content::ES_INDEX_NAME
+  new_index.create
+  [CommentThread, Comment].each do |klass|
+    klass.put_search_index_mapping
+  end
+end
+
+def refresh_es_index
+  es_index_name = Content::ES_INDEX_NAME
+  Tire.index es_index_name do
+    refresh
+  end
+end
+
+RSpec.configure do |config|
+  config.before(:each) do
+    delete_es_index
+    create_es_index
+  end
+end