Ensure deprecated validate methods are invoked when they are private [#3214 status:resolved]

activerecord/lib/active_record/callbacks.rb

@@ -291,7 +291,7 @@ def destroy_with_callbacks #:nodoc:
     end
 
     def deprecated_callback_method(symbol) #:nodoc:
-      if respond_to?(symbol)
+      if respond_to?(symbol, true)
         ActiveSupport::Deprecation.warn("Overwriting #{symbol} in your models has been deprecated, please use Base##{symbol} :method_name instead")
         send(symbol)
       end

activerecord/test/cases/validations_test.rb

@@ -19,7 +19,7 @@ class ProtectedPerson < ActiveRecord::Base
 class DeprecatedPerson < ActiveRecord::Base
   set_table_name 'people'
 
-  protected
+  private
 
   def validate
     errors[:name] << "always invalid"
@@ -161,4 +161,21 @@ def test_validates_acceptance_of_as_database_column
     topic = Topic.create("author_name" => "Dan Brown")
     assert_equal "Dan Brown", topic["author_name"]
   end
+
+  def test_validate_is_deprecated_on_create
+    p = DeprecatedPerson.new
+    assert_deprecated do
+      assert !p.valid?
+    end
+    assert_equal ["always invalid", "invalid on create"], p.errors[:name]
+  end
+
+  def test_validate_is_deprecated_on_update
+    p = DeprecatedPerson.new(:first_name => "David")
+    assert p.save(:validate => false)
+    assert_deprecated do
+      assert !p.valid?
+    end
+    assert_equal ["always invalid", "invalid on update"], p.errors[:name]
+  end
 end