old_contents: from django.test import TestCase
  from django.utils import six
  from rest_framework.utils.modelinfo import _resolve_model
  from tests.models import BasicModel
  
  
  class ResolveModelTests(TestCase):
      """
      `_resolve_model` should return a Django model class given the
      provided argument is a Django model class itself, or a properly
      formatted string representation of one.
      """
      def test_resolve_django_model(self):
          resolved_model = _resolve_model(BasicModel)
          self.assertEqual(resolved_model, BasicModel)
  
      def test_resolve_string_representation(self):
          resolved_model = _resolve_model('tests.BasicModel')
          self.assertEqual(resolved_model, BasicModel)
  
      def test_resolve_unicode_representation(self):
          resolved_model = _resolve_model(six.text_type('tests.BasicModel'))
          self.assertEqual(resolved_model, BasicModel)
  
      def test_resolve_non_django_model(self):
          with self.assertRaises(ValueError):
              _resolve_model(TestCase)
  
      def test_resolve_improper_string_representation(self):
          with self.assertRaises(ValueError):
              _resolve_model('BasicModel')
  
new_contents: from django.test import TestCase
  from django.utils import six
  from rest_framework.utils.model_meta import _resolve_model
  from tests.models import BasicModel
  
  
  class ResolveModelTests(TestCase):
      """
      `_resolve_model` should return a Django model class given the
      provided argument is a Django model class itself, or a properly
      formatted string representation of one.
      """
      def test_resolve_django_model(self):
          resolved_model = _resolve_model(BasicModel)
          self.assertEqual(resolved_model, BasicModel)
  
      def test_resolve_string_representation(self):
          resolved_model = _resolve_model('tests.BasicModel')
          self.assertEqual(resolved_model, BasicModel)
  
      def test_resolve_unicode_representation(self):
          resolved_model = _resolve_model(six.text_type('tests.BasicModel'))
          self.assertEqual(resolved_model, BasicModel)
  
      def test_resolve_non_django_model(self):
          with self.assertRaises(ValueError):
              _resolve_model(TestCase)
  
      def test_resolve_improper_string_representation(self):
          with self.assertRaises(ValueError):
              _resolve_model('BasicModel')
  
subject: Fix erronous import