old_contents: from django.test import TestCase
  from physical.models import Host
  from physical.tests.factory import InstanceFactory, HostFactory
  from logical.tests.factory import DatabaseFactory
  from api.host import HostAPI
  
  
  class HostTestCase(TestCase):
      def setUp(self):
          self.host_api = HostAPI()
          self.instance = InstanceFactory.create()
  
          self.instance.databaseinfra.databases.add(
              DatabaseFactory.create(databaseinfra=self.instance.databaseinfra)
          )
  
      def _validate_queryset(self, queryset):
          self.assertListEqual(
              list(Host.objects.filter(id=self.instance.hostname.id)),
              list(queryset)
          )
  
      def test_exclude_host_with_no_instances(self):
          HostFactory.create()
          queryset = self.host_api.get_queryset()
  
          self._validate_queryset(queryset)
  
      def test_exclude_host_with_no_database(self):
          InstanceFactory.create(address='fake_address02')
  
          queryset = self.host_api.get_queryset()
  
          self._validate_queryset(queryset)
  
new_contents: from mock import MagicMock
  from django.test import TestCase
  from physical.models import Host
  from physical.tests.factory import InstanceFactory, HostFactory
  from logical.tests.factory import DatabaseFactory
  from api.host import HostAPI
  
  
  class HostTestCase(TestCase):
      def setUp(self):
          self.host_api = HostAPI()
          self.host_api.request = MagicMock()
          self.instance = InstanceFactory.create()
  
          self.instance.databaseinfra.databases.add(
              DatabaseFactory.create(databaseinfra=self.instance.databaseinfra)
          )
  
      def _validate_queryset(self, queryset):
          self.assertListEqual(
              list(Host.objects.filter(id=self.instance.hostname.id)),
              list(queryset)
          )
  
      def test_exclude_host_with_no_instances(self):
          HostFactory.create()
          queryset = self.host_api.get_queryset()
  
          self._validate_queryset(queryset)
  
      def test_exclude_host_with_no_database(self):
          InstanceFactory.create(address='fake_address02')
  
          queryset = self.host_api.get_queryset()
  
          self._validate_queryset(queryset)
  
subject: Fix Host api test