Replace options hash with memoized instance vars

lib/fabrication/config.rb

@@ -2,51 +2,32 @@ module Fabrication
   module Config
     extend self
 
-    def configure
-      yield self
+    def configure; yield self end
+
+    def reset_defaults
+      @fabricator_path = @path_prefix = @active_support = nil
     end
 
     def fabricator_path
-      OPTIONS[:fabricator_path]
+      @fabricator_path ||= ['test/fabricators', 'spec/fabricators']
     end
     alias fabricator_dir fabricator_path
 
     def fabricator_path=(folders)
-      OPTIONS[:fabricator_path] = (Array.new << folders).flatten
+      @fabricator_path = (Array.new << folders).flatten
     end
     alias fabricator_dir= fabricator_path=
 
+    attr_writer :path_prefix
     def path_prefix
-      OPTIONS[:path_prefix]
-    end
-
-    def path_prefix=(prefix)
-      OPTIONS[:path_prefix] = prefix
-    end
-
-    def reset_defaults
-      OPTIONS.replace(DEFAULTS)
+      @path_prefix ||= defined?(Rails) ? Rails.root : "."
     end
 
     def active_support?
       @active_support ||= defined?(ActiveSupport)
     end
 
-    def register_with_steps?
-      OPTIONS[:register_with_steps]
-    end
-
-    def register_with_steps=(register)
-      OPTIONS[:register_with_steps] = register
-    end
-
-    private
-
-    DEFAULTS = {
-      fabricator_path: ['test/fabricators', 'spec/fabricators'],
-      register_with_steps: false,
-      path_prefix: defined?(Rails) ? Rails.root : "."
-    }
-    OPTIONS = {}.merge!(DEFAULTS)
+    attr_writer :register_with_steps
+    def register_with_steps?; @register_with_steps end
   end
 end