Ruby 1.9.2: work around inherited hook being called before yielding t…

…o block

railties/test/generators_test.rb

@@ -165,15 +165,13 @@ def test_nested_fallbacks_for_generators
   def test_developer_options_are_overwriten_by_user_options
     Rails::Generators.options[:new_generator] = { :generate => false }
 
-    klass = Class.new(Rails::Generators::Base) do
-      def self.name
-        "NewGenerator"
+    self.class.class_eval <<-end_eval
+      class NewGenerator < Rails::Generators::Base
+        class_option :generate, :default => true
       end
+    end_eval
 
-      class_option :generate, :default => true
-    end
-
-    assert_equal false, klass.class_options[:generate].default
+    assert_equal false, NewGenerator.class_options[:generate].default
   end
 
   def test_source_paths_for_not_namespaced_generators