Add :use_include option to allow user to explicitly use `Range#include?` method in Ruby 1.9

In Ruby 1.9 we're currently use `Range#cover?` to fix the performance problem. However, there might be the case that you want to use `Range#include?` instead. This patch will give you that option.

1 files changed, 10 insertions, 0 deletions

diff --git a/activemodel/test/cases/validations/exclusion_validation_test.rb b/activemodel/test/cases/validations/exclusion_validation_test.rb
index fe0d13ec33..e1807a3f34 100644
--- a/activemodel/test/cases/validations/exclusion_validation_test.rb
+++ b/activemodel/test/cases/validations/exclusion_validation_test.rb
@@ -63,4 +63,14 @@ class ExclusionValidationTest < ActiveModel::TestCase
     p.author_name = "sikachu"
     assert_raise(ArgumentError){ p.valid? }
   end
+
+  def test_validates_inclusion_with_explicit_include
+    range = (1..100)
+    Topic.validates_exclusion_of :title, :in => range, :use_include => true
+    range.expects(:include?).returns(false)
+
+    t = Topic.new
+    t.title = 102
+    assert t.valid?
+  end
 end