1 files changed, 8 insertions, 0 deletions
diff --git a/activemodel/test/cases/validations/validates_test.rb b/activemodel/test/cases/validations/validates_test.rb
index 666c48c8a0..3a9900939e 100644
--- a/activemodel/test/cases/validations/validates_test.rb
+++ b/activemodel/test/cases/validations/validates_test.rb
@@ -3,6 +3,7 @@ require 'cases/helper'
 require 'models/person'
 require 'models/person_with_validator'
 require 'validators/email_validator'
+require 'validators/namespace/email_validator'
 
 class ValidatesTest < ActiveModel::TestCase
   setup :reset_callbacks
@@ -34,6 +35,13 @@ class ValidatesTest < ActiveModel::TestCase
     assert_equal ['is not an email'], person.errors[:karma]
   end
 
+  def test_validates_with_namespaced_validator_class
+    Person.validates :karma, :'namespace/email' => true
+    person = Person.new
+    person.valid?
+    assert_equal ['is not an email'], person.errors[:karma]
+  end
+
   def test_validates_with_if_as_local_conditions
     Person.validates :karma, :presence => true, :email => { :unless => :condition_is_true }
     person = Person.new