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import six
from . import helpers as test_helpers
from cloudinit.cmd import main as cli
mock = test_helpers.mock
class TestCLI(test_helpers.FilesystemMockingTestCase):
def setUp(self):
super(TestCLI, self).setUp()
self.stderr = six.StringIO()
self.patchStdoutAndStderr(stderr=self.stderr)
def _call_main(self, sysv_args=None):
if not sysv_args:
sysv_args = ['cloud-init']
try:
return cli.main(sysv_args=sysv_args)
except SystemExit as e:
return e.code
def test_no_arguments_shows_usage(self):
exit_code = self._call_main()
self.assertIn('usage: cloud-init', self.stderr.getvalue())
self.assertEqual(2, exit_code)
def test_no_arguments_shows_error_message(self):
exit_code = self._call_main()
self.assertIn('cloud-init: error: too few arguments',
self.stderr.getvalue())
self.assertEqual(2, exit_code)
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