old_contents: import unittest
  
  from django.db import models
  
  from django_enumfield.exceptions import InvalidStatusOperationError
  from django_enumfield.tests.models import BeerStyle, Person, PersonStatus
  from django_enumfield.validators import validate_available_choice
  
  
  class ValidatorTest(unittest.TestCase):
      def test_validate_available_choice_1(self):
          """Test passing a value non convertable to an int raises an
          InvalidStatusOperationError
          """
          self.assertRaises(
              InvalidStatusOperationError,
              validate_available_choice,
              *(BeerStyle, "Not an int")
          )
  
      def test_validate_available_choice_2(self):
          """Test passing an int as a string validation
          """
          self.assertRaises(
              InvalidStatusOperationError,
              validate_available_choice,
              BeerStyle,
              str(BeerStyle.LAGER.value),
          )
  
      def test_validate_available_choice_3(self):
          """Test passing an int validation
          """
          self.assertIsNone(validate_available_choice(BeerStyle, BeerStyle.LAGER))
  
      def test_validate_by_setting(self):
          person = Person()
          with self.assertRaises(InvalidStatusOperationError):
              person.status = PersonStatus.UNBORN
  
          with self.assertRaises(InvalidStatusOperationError):
              person.status = models.NOT_PROVIDED
  
new_contents: import unittest
  
  from django.db import models
  
  from django_enumfield.exceptions import InvalidStatusOperationError
  from django_enumfield.tests.models import BeerStyle, Person, PersonStatus
  from django_enumfield.validators import validate_available_choice
  
  
  class ValidatorTest(unittest.TestCase):
      def test_validate_available_choice_1(self):
          """Test passing a value non convertible to an int raises an
          InvalidStatusOperationError
          """
          self.assertRaises(
              InvalidStatusOperationError,
              validate_available_choice,
              *(BeerStyle, "Not an int")
          )
  
      def test_validate_available_choice_2(self):
          """Test passing an int as a string validation
          """
          self.assertRaises(
              InvalidStatusOperationError,
              validate_available_choice,
              BeerStyle,
              str(BeerStyle.LAGER.value),
          )
  
      def test_validate_available_choice_3(self):
          """Test passing an int validation
          """
          self.assertIsNone(validate_available_choice(BeerStyle, BeerStyle.LAGER))
  
      def test_validate_by_setting(self):
          person = Person()
          with self.assertRaises(InvalidStatusOperationError):
              person.status = PersonStatus.UNBORN
  
          with self.assertRaises(InvalidStatusOperationError):
              person.status = models.NOT_PROVIDED
  
subject: Fix simple typo, convertable -> convertible