import os import sys import warnings from django.db import connection from django.core import management from django.core.management import BaseCommand, CommandError from django.core.management.utils import find_command, popen_wrapper from django.test import SimpleTestCase from django.utils import translation from django.utils.deprecation import RemovedInDjango20Warning from django.utils.six import StringIO 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): """ Test that an unknown command raises CommandError """ self.assertRaises(CommandError, 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") old_stderr = sys.stderr sys.stderr = err = StringIO() try: with self.assertRaises(SystemExit): management.ManagementUtility(['manage.py', 'dance', '--example=raise']).execute() finally: sys.stderr = old_stderr self.assertIn("CommandError", err.getvalue()) def test_default_en_us_locale_set(self): # Forces en_us when set to true out = StringIO() with translation.override('pl'): management.call_command('leave_locale_alone_false', stdout=out) self.assertEqual(out.getvalue(), "en-us\n") def test_configured_locale_preserved(self): # Leaves locale from settings when set to false out = StringIO() with translation.override('pl'): management.call_command('leave_locale_alone_true', stdout=out) self.assertEqual(out.getvalue(), "pl\n") 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_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_optparse_compatibility(self): """ optparse should be supported during Django 1.8/1.9 releases. """ out = StringIO() with warnings.catch_warnings(): warnings.filterwarnings("ignore", category=RemovedInDjango20Warning) management.call_command('optparse_cmd', stdout=out) self.assertEqual(out.getvalue(), "All right, let's dance Rock'n'Roll.\n") # Simulate command line execution old_stdout, old_stderr = sys.stdout, sys.stderr sys.stdout, sys.stderr = StringIO(), StringIO() try: management.execute_from_command_line(['django-admin', 'optparse_cmd']) finally: output = sys.stdout.getvalue() sys.stdout, sys.stderr = old_stdout, old_stderr self.assertEqual(output, "All right, let's dance Rock'n'Roll.\n") 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): out = StringIO() with self.assertRaises(CommandError): management.call_command('hal', stdout=out) def test_output_transaction(self): out = StringIO() management.call_command('transaction', stdout=out, no_color=True) output = out.getvalue().strip() self.assertTrue(output.startswith(connection.ops.start_transaction_sql())) self.assertTrue(output.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 = 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 class UtilsTests(SimpleTestCase): def test_no_existent_external_program(self): self.assertRaises(CommandError, popen_wrapper, ['a_42_command_that_doesnt_exist_42'])