1 files changed, 11 insertions, 0 deletions
diff --git a/activemodel/test/cases/validations/validates_test.rb b/activemodel/test/cases/validations/validates_test.rb
index 3a9900939e..431d2fd623 100644
--- a/activemodel/test/cases/validations/validates_test.rb
+++ b/activemodel/test/cases/validations/validates_test.rb
@@ -21,6 +21,17 @@ class ValidatesTest < ActiveModel::TestCase
     assert_equal ['is not a number'], person.errors[:title]
   end
 
+  def test_validates_with_attribute_specified_as_string
+    Person.validates "title", :numericality => true
+    person = Person.new
+    person.valid?
+    assert_equal ['is not a number'], person.errors[:title]
+
+    person = Person.new
+    person.title = 123
+    assert person.valid?
+  end
+
   def test_validates_with_built_in_validation_and_options
     Person.validates :salary, :numericality => { :message => 'my custom message' }
     person = Person.new