def test_check_output__raises_on_failure(self):
with self.assertRaises(subprocess.CalledProcessError) as cm:
utils.check_output('exit 1')
self.assertEqual(str(cm.exception),
"Command 'exit 1' returned non-zero exit status 1")
def test_check_output__returns_output(self):
self.assertEqual(utils.check_output('echo "foo\nbar"'), 'foo\nbar\n')
