content: import uuid
  
  from django_rq import get_queue
  from django_rq.workers import get_worker
  from django.urls import reverse
  from django.utils import timezone
  from rq.job import Job as RQ_Job, JobStatus
  from rq.registry import FailedJobRegistry, StartedJobRegistry
  
  from rest_framework import status
  from users.models import Token, User
  from utilities.testing import APITestCase, APIViewTestCases, TestCase
  from utilities.testing.utils import disable_logging
  from ..models import *
  
  
  class AppTest(APITestCase):
  
      def test_root(self):
          url = reverse('core-api:api-root')
          response = self.client.get('{}?format=api'.format(url), **self.header)
  
          self.assertEqual(response.status_code, 200)
  
  
  class DataSourceTest(APIViewTestCases.APIViewTestCase):
      model = DataSource
      brief_fields = ['description', 'display', 'id', 'name', 'url']
      bulk_update_data = {
          'enabled': False,
          'description': 'foo bar baz',
      }
  
      @classmethod
      def setUpTestData(cls):
          data_sources = (
              DataSource(name='Data Source 1', type='local', source_url='file:///var/tmp/source1/'),
              DataSource(name='Data Source 2', type='local', source_url='file:///var/tmp/source2/'),
              DataSource(name='Data Source 3', type='local', source_url='file:///var/tmp/source3/'),
          )
          DataSource.objects.bulk_create(data_sources)
  
          cls.create_data = [
              {
                  'name': 'Data Source 4',
                  'type': 'git',
                  'source_url': 'https://example.com/git/source4'
              },
              {
                  'name': 'Data Source 5',
                  'type': 'git',
                  'source_url': 'https://example.com/git/source5'
              },
              {
                  'name': 'Data Source 6',
                  'type': 'git',
                  'source_url': 'https://example.com/git/source6'
              },
          ]
  
  
  class DataFileTest(
      APIViewTestCases.GetObjectViewTestCase,
      APIViewTestCases.ListObjectsViewTestCase,
      APIViewTestCases.GraphQLTestCase
  ):
      model = DataFile
      brief_fields = ['display', 'id', 'path', 'url']
      user_permissions = ('core.view_datasource', )
  
      @classmethod
      def setUpTestData(cls):
          datasource = DataSource.objects.create(
              name='Data Source 1',
              type='local',
              source_url='file:///var/tmp/source1/'
          )
  
          data_files = (
              DataFile(
                  source=datasource,
                  path='dir1/file1.txt',
                  last_updated=timezone.now(),
                  size=1000,
                  hash='442da078f0111cbdf42f21903724f6597c692535f55bdfbbea758a1ae99ad9e1'
              ),
              DataFile(
                  source=datasource,
                  path='dir1/file2.txt',
                  last_updated=timezone.now(),
                  size=2000,
                  hash='a78168c7c97115bafd96450ed03ea43acec495094c5caa28f0d02e20e3a76cc2'
              ),
              DataFile(
                  source=datasource,
                  path='dir1/file3.txt',
                  last_updated=timezone.now(),
                  size=3000,
                  hash='12b8827a14c4d5a2f30b6c6e2b7983063988612391c6cbe8ee7493b59054827a'
              ),
          )
          DataFile.objects.bulk_create(data_files)
  
  
  class ObjectTypeTest(APITestCase):
  
      def test_list_objects(self):
          object_type_count = ObjectType.objects.count()
  
          response = self.client.get(reverse('extras-api:objecttype-list'), **self.header)
          self.assertHttpStatus(response, status.HTTP_200_OK)
          self.assertEqual(response.data['count'], object_type_count)
  
      def test_get_object(self):
          object_type = ObjectType.objects.first()
  
          url = reverse('extras-api:objecttype-detail', kwargs={'pk': object_type.pk})
          self.assertHttpStatus(self.client.get(url, **self.header), status.HTTP_200_OK)
  
  
  class BackgroundTaskTestCase(TestCase):
      user_permissions = ()
  
      @staticmethod
      def dummy_job_default():
          return "Job finished"
  
      @staticmethod
      def dummy_job_failing():
          raise Exception("Job failed")
  
      def setUp(self):
          """
          Create a user and token for API calls.
          """
          # Create the test user and assign permissions
          self.user = User.objects.create_user(username='testuser')
          self.user.is_staff = True
          self.user.is_active = True
          self.user.save()
          self.token = Token.objects.create(user=self.user)
          self.header = {'HTTP_AUTHORIZATION': f'Token {self.token.key}'}
  
          # Clear all queues prior to running each test
          get_queue('default').connection.flushall()
          get_queue('high').connection.flushall()
          get_queue('low').connection.flushall()
  
      def test_background_queue_list(self):
          url = reverse('core-api:rqqueue-list')
  
          # Attempt to load view without permission
          self.user.is_staff = False
          self.user.save()
          response = self.client.get(url, **self.header)
          self.assertEqual(response.status_code, 403)
  
          # Load view with permission
          self.user.is_staff = True
          self.user.save()
          response = self.client.get(url, **self.header)
          self.assertEqual(response.status_code, 200)
          self.assertIn('default', str(response.content))
          self.assertIn('high', str(response.content))
          self.assertIn('low', str(response.content))
  
      def test_background_queue(self):
          response = self.client.get(reverse('core-api:rqqueue-detail', args=['default']), **self.header)
          self.assertEqual(response.status_code, 200)
          self.assertIn('default', str(response.content))
          self.assertIn('oldest_job_timestamp', str(response.content))
          self.assertIn('scheduled_jobs', str(response.content))
  
      def test_background_task_list(self):
          queue = get_queue('default')
          queue.enqueue(self.dummy_job_default)
  
          response = self.client.get(reverse('core-api:rqtask-list'), **self.header)
          self.assertEqual(response.status_code, 200)
          self.assertIn('origin', str(response.content))
          self.assertIn('core.tests.test_api.BackgroundTaskTestCase.dummy_job_default()', str(response.content))
  
      def test_background_task(self):
          queue = get_queue('default')
          job = queue.enqueue(self.dummy_job_default)
  
          response = self.client.get(reverse('core-api:rqtask-detail', args=[job.id]), **self.header)
          self.assertEqual(response.status_code, 200)
          self.assertIn(str(job.id), str(response.content))
          self.assertIn('origin', str(response.content))
          self.assertIn('meta', str(response.content))
          self.assertIn('kwargs', str(response.content))
  
      def test_background_task_delete(self):
          queue = get_queue('default')
          job = queue.enqueue(self.dummy_job_default)
  
          response = self.client.post(reverse('core-api:rqtask-delete', args=[job.id]), **self.header)
          self.assertEqual(response.status_code, 200)
          self.assertFalse(RQ_Job.exists(job.id, connection=queue.connection))
          queue = get_queue('default')
          self.assertNotIn(job.id, queue.job_ids)
  
      def test_background_task_requeue(self):
          queue = get_queue('default')
  
          # Enqueue & run a job that will fail
          job = queue.enqueue(self.dummy_job_failing)
          worker = get_worker('default')
          with disable_logging():
              worker.work(burst=True)
          self.assertTrue(job.is_failed)
  
          # Re-enqueue the failed job and check that its status has been reset
          response = self.client.post(reverse('core-api:rqtask-requeue', args=[job.id]), **self.header)
          self.assertEqual(response.status_code, 200)
          job = RQ_Job.fetch(job.id, queue.connection)
          self.assertFalse(job.is_failed)
  
      def test_background_task_enqueue(self):
          queue = get_queue('default')
  
          # Enqueue some jobs that each depends on its predecessor
          job = previous_job = None
          for _ in range(0, 3):
              job = queue.enqueue(self.dummy_job_default, depends_on=previous_job)
              previous_job = job
  
          # Check that the last job to be enqueued has a status of deferred
          self.assertIsNotNone(job)
          self.assertEqual(job.get_status(), JobStatus.DEFERRED)
          self.assertIsNone(job.enqueued_at)
  
          # Force-enqueue the deferred job
          response = self.client.post(reverse('core-api:rqtask-enqueue', args=[job.id]), **self.header)
          self.assertEqual(response.status_code, 200)
  
          # Check that job's status is updated correctly
          job = queue.fetch_job(job.id)
          self.assertEqual(job.get_status(), JobStatus.QUEUED)
          self.assertIsNotNone(job.enqueued_at)
  
      def test_background_task_stop(self):
          queue = get_queue('default')
  
          worker = get_worker('default')
          job = queue.enqueue(self.dummy_job_default)
          worker.prepare_job_execution(job)
  
          self.assertEqual(job.get_status(), JobStatus.STARTED)
          response = self.client.post(reverse('core-api:rqtask-stop', args=[job.id]), **self.header)
          self.assertEqual(response.status_code, 200)
          with disable_logging():
              worker.monitor_work_horse(job, queue)  # Sets the job as Failed and removes from Started
          started_job_registry = StartedJobRegistry(queue.name, connection=queue.connection)
          self.assertEqual(len(started_job_registry), 0)
  
          canceled_job_registry = FailedJobRegistry(queue.name, connection=queue.connection)
          self.assertEqual(len(canceled_job_registry), 1)
          self.assertIn(job.id, canceled_job_registry)
  
      def test_worker_list(self):
          worker1 = get_worker('default', name=uuid.uuid4().hex)
          worker1.register_birth()
  
          worker2 = get_worker('high')
          worker2.register_birth()
  
          response = self.client.get(reverse('core-api:rqworker-list'), **self.header)
          self.assertEqual(response.status_code, 200)
          self.assertIn(str(worker1.name), str(response.content))
  
      def test_worker(self):
          worker1 = get_worker('default', name=uuid.uuid4().hex)
          worker1.register_birth()
  
          response = self.client.get(reverse('core-api:rqworker-detail', args=[worker1.name]), **self.header)
          self.assertEqual(response.status_code, 200)
          self.assertIn(str(worker1.name), str(response.content))
          self.assertIn('birth_date', str(response.content))
          self.assertIn('total_working_time', str(response.content))
  