import os from io import StringIO from unittest import mock from admin_scripts.tests import AdminScriptTestCase from django.apps import apps from django.core import management from django.core.management import BaseCommand, CommandError, find_commands from django.core.management.utils import find_command, popen_wrapper from django.db import connection from django.test import SimpleTestCase, override_settings from django.test.utils import captured_stderr, extend_sys_path from django.utils import translation from .management.commands import dance # A minimal set of apps to avoid system checks running on all apps. @override_settings( INSTALLED_APPS=[ 'django.contrib.auth', 'django.contrib.contenttypes', 'user_commands', ], ) class CommandTests(SimpleTestCase): def test_command(self): out = StringIO() management.call_command('dance', stdout=out) self.assertIn("I don't feel like dancing Rock'n'Roll.\n", out.getvalue()) def test_command_style(self): out = StringIO() management.call_command('dance', style='Jive', stdout=out) self.assertIn("I don't feel like dancing Jive.\n", out.getvalue()) # Passing options as arguments also works (thanks argparse) management.call_command('dance', '--style', 'Jive', stdout=out) self.assertIn("I don't feel like dancing Jive.\n", out.getvalue()) def test_language_preserved(self): out = StringIO() with translation.override('fr'): management.call_command('dance', stdout=out) self.assertEqual(translation.get_language(), 'fr') def test_explode(self): """ An unknown command raises CommandError """ with self.assertRaisesMessage(CommandError, "Unknown command: 'explode'"): management.call_command(('explode',)) def test_system_exit(self): """ Exception raised in a command should raise CommandError with call_command, but SystemExit when run from command line """ with self.assertRaises(CommandError): management.call_command('dance', example="raise") dance.Command.requires_system_checks = False try: with captured_stderr() as stderr, self.assertRaises(SystemExit): management.ManagementUtility(['manage.py', 'dance', '--example=raise']).execute() finally: dance.Command.requires_system_checks = True self.assertIn("CommandError", stderr.getvalue()) def test_no_translations_deactivate_translations(self): """ When the Command handle method is decorated with @no_translations, translations are deactivated inside the command. """ current_locale = translation.get_language() with translation.override('pl'): result = management.call_command('no_translations', stdout=StringIO()) self.assertIsNone(result) self.assertEqual(translation.get_language(), current_locale) def test_find_command_without_PATH(self): """ find_command should still work when the PATH environment variable doesn't exist (#22256). """ current_path = os.environ.pop('PATH', None) try: self.assertIsNone(find_command('_missing_')) finally: if current_path is not None: os.environ['PATH'] = current_path def test_discover_commands_in_eggs(self): """ Management commands can also be loaded from Python eggs. """ egg_dir = '%s/eggs' % os.path.dirname(__file__) egg_name = '%s/basic.egg' % egg_dir with extend_sys_path(egg_name): with self.settings(INSTALLED_APPS=['commandegg']): cmds = find_commands(os.path.join(apps.get_app_config('commandegg').path, 'management')) self.assertEqual(cmds, ['eggcommand']) def test_call_command_option_parsing(self): """ When passing the long option name to call_command, the available option key is the option dest name (#22985). """ out = StringIO() management.call_command('dance', stdout=out, opt_3=True) self.assertIn("option3", out.getvalue()) self.assertNotIn("opt_3", out.getvalue()) self.assertNotIn("opt-3", out.getvalue()) def test_call_command_option_parsing_non_string_arg(self): """ It should be possible to pass non-string arguments to call_command. """ out = StringIO() management.call_command('dance', 1, verbosity=0, stdout=out) self.assertIn("You passed 1 as a positional argument.", out.getvalue()) def test_calling_a_command_with_only_empty_parameter_should_ends_gracefully(self): out = StringIO() management.call_command('hal', "--empty", stdout=out) self.assertIn("Dave, I can't do that.\n", out.getvalue()) def test_calling_command_with_app_labels_and_parameters_should_be_ok(self): out = StringIO() management.call_command('hal', 'myapp', "--verbosity", "3", stdout=out) self.assertIn("Dave, my mind is going. I can feel it. I can feel it.\n", out.getvalue()) def test_calling_command_with_parameters_and_app_labels_at_the_end_should_be_ok(self): out = StringIO() management.call_command('hal', "--verbosity", "3", "myapp", stdout=out) self.assertIn("Dave, my mind is going. I can feel it. I can feel it.\n", out.getvalue()) def test_calling_a_command_with_no_app_labels_and_parameters_should_raise_a_command_error(self): with self.assertRaises(CommandError): management.call_command('hal', stdout=StringIO()) def test_output_transaction(self): output = management.call_command('transaction', stdout=StringIO(), no_color=True) self.assertTrue(output.strip().startswith(connection.ops.start_transaction_sql())) self.assertTrue(output.strip().endswith(connection.ops.end_transaction_sql())) def test_call_command_no_checks(self): """ By default, call_command should not trigger the check framework, unless specifically asked. """ self.counter = 0 def patched_check(self_, **kwargs): self.counter += 1 saved_check = BaseCommand.check BaseCommand.check = patched_check try: management.call_command("dance", verbosity=0) self.assertEqual(self.counter, 0) management.call_command("dance", verbosity=0, skip_checks=False) self.assertEqual(self.counter, 1) finally: BaseCommand.check = saved_check def test_check_migrations(self): requires_migrations_checks = dance.Command.requires_migrations_checks self.assertIs(requires_migrations_checks, False) try: with mock.patch.object(BaseCommand, 'check_migrations') as check_migrations: management.call_command('dance', verbosity=0) self.assertFalse(check_migrations.called) dance.Command.requires_migrations_checks = True management.call_command('dance', verbosity=0) self.assertTrue(check_migrations.called) finally: dance.Command.requires_migrations_checks = requires_migrations_checks def test_call_command_unrecognized_option(self): msg = ( 'Unknown option(s) for dance command: unrecognized. Valid options ' 'are: example, help, integer, no_color, opt_3, option3, ' 'pythonpath, settings, skip_checks, stderr, stdout, style, ' 'traceback, verbosity, version.' ) with self.assertRaisesMessage(TypeError, msg): management.call_command('dance', unrecognized=1) msg = ( 'Unknown option(s) for dance command: unrecognized, unrecognized2. ' 'Valid options are: example, help, integer, no_color, opt_3, ' 'option3, pythonpath, settings, skip_checks, stderr, stdout, ' 'style, traceback, verbosity, version.' ) with self.assertRaisesMessage(TypeError, msg): management.call_command('dance', unrecognized=1, unrecognized2=1) def test_call_command_with_required_parameters_in_options(self): out = StringIO() management.call_command('required_option', need_me='foo', needme2='bar', stdout=out) self.assertIn('need_me', out.getvalue()) self.assertIn('needme2', out.getvalue()) def test_call_command_with_required_parameters_in_mixed_options(self): out = StringIO() management.call_command('required_option', '--need-me=foo', needme2='bar', stdout=out) self.assertIn('need_me', out.getvalue()) self.assertIn('needme2', out.getvalue()) def test_command_add_arguments_after_common_arguments(self): out = StringIO() management.call_command('common_args', stdout=out) self.assertIn('Detected that --version already exists', out.getvalue()) def test_subparser(self): out = StringIO() management.call_command('subparser', 'foo', 12, stdout=out) self.assertIn('bar', out.getvalue()) def test_subparser_invalid_option(self): msg = "Error: invalid choice: 'test' (choose from 'foo')" with self.assertRaisesMessage(CommandError, msg): management.call_command('subparser', 'test', 12) def test_create_parser_kwargs(self): """BaseCommand.create_parser() passes kwargs to CommandParser.""" epilog = 'some epilog text' parser = BaseCommand().create_parser('prog_name', 'subcommand', epilog=epilog) self.assertEqual(parser.epilog, epilog) class CommandRunTests(AdminScriptTestCase): """ Tests that need to run by simulating the command line, not by call_command. """ def tearDown(self): self.remove_settings('settings.py') def test_script_prefix_set_in_commands(self): self.write_settings('settings.py', apps=['user_commands'], sdict={ 'ROOT_URLCONF': '"user_commands.urls"', 'FORCE_SCRIPT_NAME': '"/PREFIX/"', }) out, err = self.run_manage(['reverse_url']) self.assertNoOutput(err) self.assertEqual(out.strip(), '/PREFIX/some/url/') def test_disallowed_abbreviated_options(self): """ To avoid conflicts with custom options, commands don't allow abbreviated forms of the --setting and --pythonpath options. """ self.write_settings('settings.py', apps=['user_commands']) out, err = self.run_manage(['set_option', '--set', 'foo']) self.assertNoOutput(err) self.assertEqual(out.strip(), 'Set foo') class UtilsTests(SimpleTestCase): def test_no_existent_external_program(self): msg = 'Error executing a_42_command_that_doesnt_exist_42' with self.assertRaisesMessage(CommandError, msg): popen_wrapper(['a_42_command_that_doesnt_exist_42'])