Fix an error when no logger was specified

* Add failing test for case when no logger is specified
* add fix for failing test
* fix teardown of no logger test

lib/paperclip/logger.rb

@@ -7,7 +7,7 @@ module Paperclip
     end
     end
 
 
     def logger #:nodoc:
     def logger #:nodoc:
-      @logger ||= options[:logger] || Logger.new(STDOUT)
+      @logger ||= options[:logger] || ::Logger.new(STDOUT)
     end
     end
 
 
     def logger=(logger)
     def logger=(logger)

test/paperclip_test.rb

@@ -33,6 +33,21 @@ class PaperclipTest < Test::Unit::TestCase
     end
     end
   end
   end
 
 
+  context "Calling Paperclip.log without options[:logger] set" do
+    setup do
+      Paperclip.logger = nil
+      Paperclip.options[:logger] = nil
+    end
+    teardown do
+      Paperclip.options[:logger] = ActiveRecord::Base.logger
+      Paperclip.logger = ActiveRecord::Base.logger
+    end
+    should "not raise an error when log is called" do
+      assert_nothing_raised do
+        Paperclip.log('something')
+      end
+    end
+  end
   context "Calling Paperclip.run with a logger" do
   context "Calling Paperclip.run with a logger" do
     should "pass the defined logger if :log_command is set" do
     should "pass the defined logger if :log_command is set" do
       Paperclip.options[:log_command] = true
       Paperclip.options[:log_command] = true