test: Add already defined method spec

spec/enum/enum_spec.rb

@@ -83,7 +83,6 @@ class Neighborhood < ActiveHash::Base
     describe "define_enum_methods" do
       class Movie < ActiveHash::Base
         include ActiveHash::Enum
-        include ActiveHash::Associations
 
         self.data = [
           {:name => 'Die Hard 2', :rating => '4.3'},
@@ -107,6 +106,28 @@ class Movie < ActiveHash::Base
         expect(Movie::IN_OUT.die_hard_2?).to be_falsey
         expect(Movie::IN_OUT.the_informant?).to be_falsey
       end
+
+      context "already defined method" do
+        it "overrides the method" do
+          class Movie < ActiveHash::Base
+            def die_hard_2?
+              true
+            end
+          end
+
+          expect(Movie::DIE_HARD_2.die_hard_2?).to be_truthy
+          expect(Movie::DIE_HARD_2.the_informant?).to be_falsey
+          expect(Movie::DIE_HARD_2.in_out?).to be_falsey
+
+          expect(Movie::THE_INFORMANT.the_informant?).to be_truthy
+          expect(Movie::THE_INFORMANT.die_hard_2?).to be_truthy
+          expect(Movie::THE_INFORMANT.in_out?).to be_falsey
+
+          expect(Movie::IN_OUT.in_out?).to be_truthy
+          expect(Movie::IN_OUT.die_hard_2?).to be_truthy
+          expect(Movie::IN_OUT.the_informant?).to be_falsey
+        end
+      end
     end
   end