Fix .first_name in Forgery::Name (this is why we test)

lib/forgery/forgery/name.rb

@@ -5,7 +5,7 @@ def self.last_name
   end
 
   def self.first_name
-    [dictionaries[:male_first_names], dictionaries[:female_first_names]].random.random.unextend
+    Forgery::Extend(dictionaries[:male_first_names] + dictionaries[:female_first_names]).random.unextend
   end
 
   def self.full_name

spec/forgery/name_spec.rb

@@ -1,4 +1,11 @@
 require 'spec_helper'
 
 describe Forgery::Name do
+  it "should return a random first name" do
+    (Forgery.dictionaries[:male_first_names] + Forgery.dictionaries[:female_first_names]).should include(Forgery::Name.first_name)
+  end
+
+  it "should return a random last name" do
+    Forgery.dictionaries[:last_names].should include(Forgery::Name.last_name)
+  end
 end