def testStderr(self):
    """Test standard error"""
    cmd = self.magic % 'echo -n "%s"'
    result = utils.RunCmd("/bin/sh -c '%s' 1>&2" % cmd)
    self.assertEqual(result.stderr, self.magic)
    result = utils.RunCmd("/bin/sh -c '%s' 1>&2" % cmd, output=self.fname)
    self.assertEqual(result.output, "")
    self.assertFileContent(self.fname, self.magic)
dataset/ETHPy150Open ganeti/ganeti/test/py/ganeti.utils.process_unittest.py/TestRunCmd.testStderr/swapped operands of `%`