old_contents: # Copyright 2017 Tecnativa - Vicent Cubells
  # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
  
  from odoo.tests import common
  from odoo.exceptions import ValidationError
  
  
  class TestResPartnerRefUnique(common.SavepointCase):
      @classmethod
      def setUpClass(cls):
          super(TestResPartnerRefUnique, cls).setUpClass()
          cls.company = cls.env.ref('base.main_company')
          partner_obj = cls.env['res.partner']
          cls.partner1 = partner_obj.create({
              'name': 'Partner1',
          })
          cls.partner2 = partner_obj.create({
              'name': 'Partner2',
          })
  
      def test_check_ref(self):
          # Test can create/modify partners with same ref
          self.company.partner_ref_unique = 'none'
          self.partner1.ref = 'same_ref'
          self.partner2.ref = 'same_ref'
          self.assertEqual(self.partner1.ref, self.partner2.ref)
          self.partner2.ref = False
  
          # Test can't create/modify partner with same ref
          self.company.partner_ref_unique = 'all'
          with self.assertRaises(ValidationError):
              self.partner2.ref = 'same_ref'
  
          # Test can't create/modify companies with same ref
          self.company.partner_ref_unique = 'companies'
          self.partner2.ref = 'same_ref'
          self.assertEqual(self.partner1.ref, self.partner2.ref)
          self.partner2.ref = False
          self.partner1.is_company = True
          self.partner2.is_company = True
          with self.assertRaises(ValidationError):
              self.partner2.ref = 'same_ref'
  
new_contents: # Copyright 2017 Tecnativa - Vicent Cubells
  # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
  
  from odoo.tests import common
  from odoo.exceptions import ValidationError
  
  
  class TestResPartnerRefUnique(common.SavepointCase):
      @classmethod
      def setUpClass(cls):
          super(TestResPartnerRefUnique, cls).setUpClass()
          cls.company = cls.env.ref('base.main_company')
          cls.partner_obj = cls.env['res.partner']
          cls.partner1 = cls.partner_obj.create({
              'name': 'Partner1',
          })
          cls.partner2 = cls.partner_obj.create({
              'name': 'Partner2',
          })
  
      def test_check_ref(self):
          # Test can create/modify partners with same ref
          self.company.partner_ref_unique = 'none'
          self.partner1.ref = 'same_ref'
          self.partner2.ref = 'same_ref'
          self.assertEqual(self.partner1.ref, self.partner2.ref)
          # Here there shouldn't be any problem
          self.partner_obj.create({
              'name': 'other',
              'ref': 'same_ref',
          })
          self.partner2.ref = False
          # Test can't create/modify partner with same ref
          self.company.partner_ref_unique = 'all'
          with self.assertRaises(ValidationError):
              self.partner2.ref = 'same_ref'
          with self.assertRaises(ValidationError):
              self.partner_obj.create({
                  'name': 'other',
                  'ref': 'same_ref',
              })
          # Test can't create/modify companies with same ref
          self.company.partner_ref_unique = 'companies'
          self.partner2.ref = 'same_ref'
          self.assertEqual(self.partner1.ref, self.partner2.ref)
          self.partner2.ref = False
          self.partner1.is_company = True
          self.partner2.is_company = True
          with self.assertRaises(ValidationError):
              self.partner2.ref = 'same_ref'
          with self.assertRaises(ValidationError):
              self.partner_obj.create({
                  'is_company': True,
                  'name': 'other',
                  'ref': 'same_ref',
              })
          # Here there shouldn't be any problem
          self.partner_obj.create({
              'is_company': False,
              'name': 'other',
              'ref': 'same_ref',
          })
  
subject: Extend tests use cases