def METHOD_NAME(self):
    self.assertEqual(pip_utils.version_satisfies_spec(None, "blah"), True)
    self.assertEqual(pip_utils.version_satisfies_spec("blah", None), False)
    self.assertEqual(pip_utils.version_satisfies_spec(">=1.2.3", "1.2.4"), True)
    self.assertEqual(pip_utils.version_satisfies_spec(">=1.2.3", "1.2.4.dev987"), False)
    self.assertEqual(pip_utils.version_satisfies_spec(">=1.0", "1.1.dev1"), False)
    self.assertEqual(pip_utils.version_satisfies_spec(">=1.0,>=0.0.dev0", "1.1.dev1"), True)