Improve DB config in specs

Author: n-rodriguez

spec/spec_helper.rb

@@ -55,8 +55,7 @@
   end
 end
 
-require 'ajax-datatables-rails'
-
+# Configure ActiveRecord
 adapter = ENV.fetch('DB_ADAPTER', 'postgresql')
 
 options = {
@@ -65,11 +64,22 @@
   encoding: 'utf8'
 }
 
-options = options.merge(host: '127.0.0.1', port: 5432, username: 'postgres', password: 'postgres') if adapter == 'postgresql'
-options = options.merge(host: '127.0.0.1', port: 3306, username: 'root', password: 'root') if adapter == 'mysql2'
-options = options.merge(username: ENV['USER'], password: ENV['USER'], database: 'xe', host: '127.0.0.1/xe') if adapter == 'oracle_enhanced'
-options = options.merge(database: ':memory:') if adapter == 'sqlite3'
+options =
+  case adapter
+  when 'postgresql'
+    options.merge(host: '127.0.0.1', port: 5432, username: 'postgres', password: 'postgres')
+  when 'mysql2'
+    options.merge(host: '127.0.0.1', port: 3306, username: 'root', password: 'root')
+  when 'oracle_enhanced'
+    options.merge(host: '127.0.0.1/xe', username: ENV['USER'], password: ENV['USER'], database: 'xe')
+  when 'sqlite3'
+    options.merge(database: ':memory:')
+  end
 
 ActiveRecord::Base.establish_connection(options)
 
+# Require our gem
+require 'ajax-datatables-rails'
+
+# Load test helpers
 Dir[File.dirname(__FILE__) + '/support/**/*.rb'].sort.each { |f| require f }