private static async Task VerifyBatchOperationAuthFailure(IRingMasterRequestHandler ringMaster, params Op[] operations) { IReadOnlyList <OpResult> results = await ringMaster.Batch(operations); Assert.AreEqual(operations.Length, results.Count); foreach (OpResult result in results) { Assert.AreEqual(RingMasterException.Code.Authfailed, result.ErrCode); } }