old_contents: from django.db import models, transaction
  from django.test import TransactionTestCase
  
  from wagtailstreamforms.models import Form, FormSubmission, FormSubmissionFile
  
  from ..test_case import AppTestCase
  
  
  class ModelGenericTests(AppTestCase):
  
      def test_str(self):
          model = FormSubmissionFile(file=self.get_file())
          self.assertEqual(model.__str__(), model.file.name)
  
      def test_ordering(self):
          self.assertEqual(FormSubmissionFile._meta.ordering, ['field', 'file'])
  
  
  class ModelFieldTests(AppTestCase):
  
      def test_submission(self):
          field = self.get_field(FormSubmissionFile, 'submission')
          self.assertModelPKField(field, FormSubmission, models.CASCADE)
  
      def test_field(self):
          field = self.get_field(FormSubmissionFile, 'field')
          self.assertModelField(field, models.CharField)
  
      def test_file(self):
          field = self.get_field(FormSubmissionFile, 'file')
          self.assertModelField(field, models.FileField)
  
  
  class ModelPropertyTests(AppTestCase):
  
      def test_url(self):
          model = FormSubmissionFile(file=self.get_file())
          self.assertEqual(model.url, model.file.url)
  
  
  class DeleteTests(TransactionTestCase):
      fixtures = ['test']
  
      def test_files_are_deleted_on_commit(self):
          test_file = AppTestCase().get_file()
          with transaction.atomic():
              form = Form.objects.get(pk=1)
              submission = FormSubmission.objects.create(form=form, form_data={})
              file = FormSubmissionFile.objects.create(submission=submission, field='field', file=test_file)
              self.assertTrue(file.file.storage.exists(file.file.name))
              file.delete()
              self.assertTrue(file.file.storage.exists(file.file.name))
          self.assertFalse(file.file.storage.exists(file.file.name))
  
new_contents: from django.db import models, transaction
  from django.test import TransactionTestCase
  
  from wagtailstreamforms.models import Form, FormSubmission, FormSubmissionFile
  
  from ..test_case import AppTestCase
  
  
  class ModelGenericTests(AppTestCase):
  
      def test_str(self):
          model = FormSubmissionFile(file=self.get_file())
          self.assertEqual(model.__str__(), model.file.name)
  
      def test_ordering(self):
          self.assertEqual(FormSubmissionFile._meta.ordering, ['field', 'file'])
  
  
  class ModelFieldTests(AppTestCase):
  
      def test_submission(self):
          field = self.get_field(FormSubmissionFile, 'submission')
          self.assertModelPKField(field, FormSubmission, models.CASCADE)
  
      def test_field(self):
          field = self.get_field(FormSubmissionFile, 'field')
          self.assertModelField(field, models.CharField)
  
      def test_file(self):
          field = self.get_field(FormSubmissionFile, 'file')
          self.assertModelField(field, models.FileField)
  
  
  class ModelPropertyTests(AppTestCase):
  
      def test_url(self):
          model = FormSubmissionFile(file=self.get_file())
          self.assertEqual(model.url, model.file.url)
  
  
  class DeleteTests(TransactionTestCase):
      fixtures = ['test']
  
      def test_files_are_deleted_on_commit(self):
          test_file = AppTestCase().get_file()
          name = None
          with transaction.atomic():
              form = Form.objects.get(pk=1)
              submission = FormSubmission.objects.create(form=form, form_data={})
              file = FormSubmissionFile.objects.create(submission=submission, field='field', file=test_file)
              name = file.file.name
              self.assertTrue(file.file.storage.exists(name))
              file.delete()
              self.assertTrue(file.file.storage.exists(name))
          self.assertFalse(file.file.storage.exists(name))
  
subject: Fix test