Do not validate Contact#country_code if address processing is off

#731

app/models/contact.rb

@@ -37,7 +37,7 @@ class Contact < ActiveRecord::Base
   validates_associated :identifier
 
   validate :validate_html
-  validate :validate_country_code
+  validate :validate_country_code, if: 'self.class.address_processing?'
 
   after_initialize do
     self.status_notes = {} if status_notes.nil?

test/models/contact/postal_address_test.rb

@@ -0,0 +1,19 @@
+require 'test_helper'
+
+class ContactPostalAddressTest < ActiveSupport::TestCase
+  def setup
+    @contact = contacts(:john)
+  end
+
+  def test_invalid_if_country_code_is_invalid_and_address_processing_is_on
+    Setting.address_processing = true
+    @contact.country_code = 'invalid'
+    assert @contact.invalid?
+  end
+
+  def test_valid_if_country_code_is_invalid_and_address_processing_is_off
+    Setting.address_processing = false
+    @contact.country_code = 'invalid'
+    assert @contact.valid?
+  end
+end