def METHOD_NAME(self):
    """Test the stringification of the RelValPolicy object"""
    validDatatiers = []
    validRSEs = ["rse_2"]
    testPolicy = [{"datatier": "default", "destinations": ["rse_2"]}]
    lifePolicy = [{"releaseType": "pre", "lifetimeSecs": 3},
                  {"releaseType": "default", "lifetimeSecs": 12}]
    policyObj = str(RelValPolicy(testPolicy, lifePolicy, validDatatiers, validRSEs))
    self.assertTrue(isinstance(policyObj, str))
    policyObj = json.loads(policyObj)
    self.assertCountEqual(policyObj["originalTierPolicy"], testPolicy)
    self.assertCountEqual(policyObj["mappedTierPolicy"], {"default": ["rse_2"]})
    self.assertCountEqual(policyObj["originalLifetimePolicy"], lifePolicy)
    self.assertCountEqual(policyObj["mappedLifetimePolicy"], {"pre": 3, "default": 12})