add specs config

devops-service/spec/support/config.yml

@@ -0,0 +1,7 @@
+# only :db key is required
+mongo:
+  :db: devops_test
+  :host:
+  :port:
+  :user:
+  :password:

devops-service/spec/support/spec_support.rb

@@ -1,8 +1,9 @@
-require 'core/devops-application'
+require 'yaml'
 
 module SpecSupport
-  BLANK_FILE = File.join(Devops::Application.root, 'spec/support/blank_file')
-  TEST_DB = 'devops_test'
+  ROOT = File.join(__dir__, '../../')
+  BLANK_FILE = File.join(ROOT, 'spec/support/blank_file')
+
 
   def stub_loggers
     allow(DevopsLogger).to receive_message_chain('logger.debug')
@@ -10,10 +11,32 @@ module SpecSupport
     allow(DevopsLogger).to receive_message_chain('logger.error')
   end
 
-  def self.db
+  def self.db_params
     @db ||= begin
+      conf = config['mongo']
+      db_name = conf.fetch(:db)
+      [db_name, conf[:host], conf[:port], conf[:user], conf[:password]]
+    end
+  end
+
+  def self.db
+    unless @db
       require 'mongo'
-      Mongo::MongoClient.new.db(TEST_DB)
+      db_name, host, port, user, password = db_params
+      @db = MongoClient.new(host, port).db(db_name)
+      @db.authenticate(user, password) unless user.nil? or password.nil?
+    end
+    @db
+  end
+
+  def self.config
+    @config ||= begin
+      config_file = ENV['RSPEC_CONFIG_PATH'] || File.join(ROOT, 'spec/support/config.yml')
+      if File.exists?(config_file)
+        YAML.load_file(config_file)
+      else
+        raise "There is no config file: '#{config_file}'"
+      end
     end
   end
 end