text: from unittest.mock import patch
  
  from django.core.management import call_command
  from django.db.utils import OperationalError
  from django.test import TestCase
  
  
  class CommandTest(TestCase):
  
      def test_wait_for_db_ready(self):
          """Test waiting for db when db is ready"""
          with patch('django.db.utils.ConnectionHandler.__getitem__') as gi:
              gi.return_value = True
              call_command('wait_for_db')
              self.assertEqual(gi.call_count, 1)
  
      @patch('time.sleep', return_value=True)
      def test_wait_for_db(self, ts):
          """Test waiting for db"""
          with patch('django.db.utils.ConnectionHandler.__getitem__') as gi:
              gi.side_effect = [OperationalError] * 5 + [True]
              call_command('wait_for_db')
              self.assertEqual(gi.call_count, 6)
  