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#region Copyright notice and license
// Copyright 2015 gRPC authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#endregion
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using Grpc.Core;
using Grpc.Core.Internal;
using Grpc.Core.Utils;
using NUnit.Framework;
namespace Grpc.Core.Tests
{
public class MarshallingErrorsTest
{
const string Host = "127.0.0.1";
MockServiceHelper helper;
Server server;
Channel channel;
[SetUp]
public void Init()
{
var marshaller = new Marshaller<string>(
(str) =>
{
if (str == "UNSERIALIZABLE_VALUE")
{
// Google.Protobuf throws exception inherited from IOException
throw new IOException("Error serializing the message.");
}
return System.Text.Encoding.UTF8.GetBytes(str);
},
(payload) =>
{
var s = System.Text.Encoding.UTF8.GetString(payload);
if (s == "UNPARSEABLE_VALUE")
{
// Google.Protobuf throws exception inherited from IOException
throw new IOException("Error parsing the message.");
}
return s;
});
helper = new MockServiceHelper(Host, marshaller);
server = helper.GetServer();
server.Start();
channel = helper.GetChannel();
}
[TearDown]
public void Cleanup()
{
channel.ShutdownAsync().Wait();
server.ShutdownAsync().Wait();
}
[Test]
public void ResponseParsingError_UnaryResponse()
{
helper.UnaryHandler = new UnaryServerMethod<string, string>((request, context) =>
{
return Task.FromResult("UNPARSEABLE_VALUE");
});
var ex = Assert.Throws<RpcException>(() => Calls.BlockingUnaryCall(helper.CreateUnaryCall(), "REQUEST"));
Assert.AreEqual(StatusCode.Internal, ex.Status.StatusCode);
}
[Test]
public void ResponseParsingError_StreamingResponse()
{
helper.ServerStreamingHandler = new ServerStreamingServerMethod<string, string>(async (request, responseStream, context) =>
{
await responseStream.WriteAsync("UNPARSEABLE_VALUE");
await Task.Delay(10000);
});
var call = Calls.AsyncServerStreamingCall(helper.CreateServerStreamingCall(), "REQUEST");
var ex = Assert.ThrowsAsync<RpcException>(async () => await call.ResponseStream.MoveNext());
Assert.AreEqual(StatusCode.Internal, ex.Status.StatusCode);
}
[Test]
public void RequestParsingError_UnaryRequest()
{
helper.UnaryHandler = new UnaryServerMethod<string, string>((request, context) =>
{
return Task.FromResult("RESPONSE");
});
var ex = Assert.Throws<RpcException>(() => Calls.BlockingUnaryCall(helper.CreateUnaryCall(), "UNPARSEABLE_VALUE"));
// Spec doesn't define the behavior. With the current implementation server handler throws exception which results in StatusCode.Unknown.
Assert.AreEqual(StatusCode.Unknown, ex.Status.StatusCode);
}
[Test]
public async Task RequestParsingError_StreamingRequest()
{
helper.ClientStreamingHandler = new ClientStreamingServerMethod<string, string>(async (requestStream, context) =>
{
try
{
// cannot use Assert.ThrowsAsync because it uses Task.Wait and would deadlock.
await requestStream.MoveNext();
Assert.Fail();
}
catch (IOException)
{
}
return "RESPONSE";
});
var call = Calls.AsyncClientStreamingCall(helper.CreateClientStreamingCall());
await call.RequestStream.WriteAsync("UNPARSEABLE_VALUE");
Assert.AreEqual("RESPONSE", await call);
}
[Test]
public void RequestSerializationError_BlockingUnary()
{
Assert.Throws<IOException>(() => Calls.BlockingUnaryCall(helper.CreateUnaryCall(), "UNSERIALIZABLE_VALUE"));
}
[Test]
public void RequestSerializationError_AsyncUnary()
{
Assert.ThrowsAsync<IOException>(async () => await Calls.AsyncUnaryCall(helper.CreateUnaryCall(), "UNSERIALIZABLE_VALUE"));
}
[Test]
public async Task RequestSerializationError_ClientStreaming()
{
helper.ClientStreamingHandler = new ClientStreamingServerMethod<string, string>(async (requestStream, context) =>
{
CollectionAssert.AreEqual(new[] { "A", "B" }, await requestStream.ToListAsync());
return "RESPONSE";
});
var call = Calls.AsyncClientStreamingCall(helper.CreateClientStreamingCall());
await call.RequestStream.WriteAsync("A");
Assert.ThrowsAsync<IOException>(async () => await call.RequestStream.WriteAsync("UNSERIALIZABLE_VALUE"));
await call.RequestStream.WriteAsync("B");
await call.RequestStream.CompleteAsync();
Assert.AreEqual("RESPONSE", await call);
}
}
}
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