Add tests for reverting to foreign versions.

test/functional/wiki_pages_controller_test.rb

@@ -97,6 +97,16 @@ class WikiPagesControllerTest < ActionController::TestCase
         @wiki_page.reload
         assert_equal("1", @wiki_page.body)
       end
+
+      should "not allow reverting to a previous version of another wiki page" do
+        @wiki_page_2 = FactoryGirl.create(:wiki_page)
+
+        post :revert, { :id => @wiki_page.id, :version_id => @wiki_page_2.versions(true).first.id }, {:user_id => @user.id}
+        @wiki_page.reload
+
+        assert_not_equal(@wiki_page.body, @wiki_page_2.body)
+        assert_response :missing
+      end
     end
   end
 end