recipes_api/app/core/tests/test_commands.py

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"""
Test custom Django management commands.
"""
from unittest.mock import patch
from psycopg2 import OperationalError as Psycopg2OpError
from django.core.management import call_command
from django.db.utils import OperationalError
from django.test import SimpleTestCase
@patch('core.management.commands.wait_for_db.Command.check')
class CommandTests(SimpleTestCase):
"""Test Comands."""
def test_wait_for_db_ready(self, patched_check):
"""Test waiting for database if database ready."""
patched_check.return_value = True
call_command('wait_for_db')
patched_check.assert_called_once_with(databases=['default'])
# ojo con el orden de los parametros "desde dentro hacia fuera"
@patch('time.sleep')
def test_wait_for_db_delay(self, patched_sleep, patched_check):
"""Test waiting for database when getting OperationalError."""
patched_check.side_effect = [Psycopg2OpError] * 2 + \
[OperationalError] * 3 + [True]
call_command('wait_for_db')
self.assertEqual(patched_check.call_count, 6)
patched_check.assert_called_with(databases=['default'])