integration.rb in ddtrace-0.33.1

- old
+ new

@@ -7,21 +7,23 @@
     module Mysql2
       # Description of Mysql2 integration
       class Integration
         include Contrib::Integration
 
+        MINIMUM_VERSION = Gem::Version.new('0.3.21')
+
         register_as :mysql2
 
         def self.version
           Gem.loaded_specs['mysql2'] && Gem.loaded_specs['mysql2'].version
         end
 
         def self.loaded?
-          defined?(::Mysql2)
+          !defined?(::Mysql2).nil?
         end
 
         def self.compatible?
-          super && version >= Gem::Version.new('0.3.21')
+          super && version >= MINIMUM_VERSION
         end
 
         def default_configuration
           Configuration::Settings.new
         end