django/tests/user_commands/tests.py

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import os
import sys
from django.core import management
from django.core.management import CommandError
from django.core.management.utils import find_command, popen_wrapper
from django.test import SimpleTestCase
from django.utils import translation
from django.utils.six import StringIO
class CommandTests(SimpleTestCase):
def test_command(self):
out = StringIO()
management.call_command('dance', stdout=out)
self.assertEqual(out.getvalue(),
"I don't feel like dancing Rock'n'Roll.\n")
def test_command_style(self):
out = StringIO()
management.call_command('dance', style='Jive', stdout=out)
self.assertEqual(out.getvalue(),
"I don't feel like dancing Jive.\n")
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_optparse_compatibility(self):
"""
optparse should be supported during Django 1.8/1.9 releases.
"""
out = StringIO()
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")
class UtilsTests(SimpleTestCase):
def test_no_existent_external_program(self):
self.assertRaises(CommandError, popen_wrapper, ['a_42_command_that_doesnt_exist_42'])