Add validates method as shortcut to setup validators for a given set of attributes:

class Person < ActiveRecord::Base
  include MyValidators

  validates :name, :presence => true, :uniqueness => true, :length => { :maximum => 100 }
  validates :email, :presence => true, :email => true
end

[#3058 status:resolved]

Signed-off-by: José Valim <jose.valim@gmail.com>

1 files changed, 22 insertions, 0 deletions

diff --git a/activemodel/test/cases/validations/with_validation_test.rb b/activemodel/test/cases/validations/with_validation_test.rb
index 7540ccb580..66b072ea38 100644
--- a/activemodel/test/cases/validations/with_validation_test.rb
+++ b/activemodel/test/cases/validations/with_validation_test.rb
@@ -120,6 +120,28 @@ class ValidatesWithTest < ActiveRecord::TestCase
     Topic.validates_with(validator, :if => "1 == 1", :foo => :bar)
     assert topic.valid?
   end
+ 
+  test "calls setup method of validator passing in self when validator has setup method" do
+    topic = Topic.new
+    validator = stub_everything
+    validator.stubs(:new).returns(validator)
+    validator.stubs(:validate)
+    validator.stubs(:respond_to?).with(:setup).returns(true)
+    validator.expects(:setup).with(Topic).once
+    Topic.validates_with(validator)
+    assert topic.valid?
+  end
+  
+  test "doesn't call setup method of validator when validator has no setup method" do
+    topic = Topic.new
+    validator = stub_everything
+    validator.stubs(:new).returns(validator)
+    validator.stubs(:validate)
+    validator.stubs(:respond_to?).with(:setup).returns(false)
+    validator.expects(:setup).with(Topic).never
+    Topic.validates_with(validator)
+    assert topic.valid?
+  end
 
   test "validates_with with options" do
     Topic.validates_with(ValidatorThatValidatesOptions, :field => :first_name)