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#region Copyright notice and license
// Copyright 2015, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#endregion
using System;
using System.Diagnostics;
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 ClientServerTest
{
const string Host = "localhost";
const string ServiceName = "/tests.Test";
static readonly Method<string, string> EchoMethod = new Method<string, string>(
MethodType.Unary,
"/tests.Test/Echo",
Marshallers.StringMarshaller,
Marshallers.StringMarshaller);
static readonly Method<string, string> ConcatAndEchoMethod = new Method<string, string>(
MethodType.ClientStreaming,
"/tests.Test/ConcatAndEcho",
Marshallers.StringMarshaller,
Marshallers.StringMarshaller);
static readonly Method<string, string> NonexistentMethod = new Method<string, string>(
MethodType.Unary,
"/tests.Test/NonexistentMethod",
Marshallers.StringMarshaller,
Marshallers.StringMarshaller);
static readonly ServerServiceDefinition ServiceDefinition = ServerServiceDefinition.CreateBuilder(ServiceName)
.AddMethod(EchoMethod, EchoHandler)
.AddMethod(ConcatAndEchoMethod, ConcatAndEchoHandler)
.Build();
Server server;
Channel channel;
[SetUp]
public void Init()
{
server = new Server();
server.AddServiceDefinition(ServiceDefinition);
int port = server.AddListeningPort(Host, Server.PickUnusedPort);
server.Start();
channel = new Channel(Host, port);
}
[TearDown]
public void Cleanup()
{
channel.Dispose();
server.ShutdownAsync().Wait();
}
[TestFixtureTearDown]
public void CleanupClass()
{
GrpcEnvironment.Shutdown();
}
[Test]
public void UnaryCall()
{
var call = new Call<string, string>(ServiceName, EchoMethod, channel, Metadata.Empty);
Assert.AreEqual("ABC", Calls.BlockingUnaryCall(call, "ABC", CancellationToken.None));
}
[Test]
public void UnaryCall_ServerHandlerThrows()
{
var call = new Call<string, string>(ServiceName, EchoMethod, channel, Metadata.Empty);
try
{
Calls.BlockingUnaryCall(call, "THROW", CancellationToken.None);
Assert.Fail();
}
catch (RpcException e)
{
Assert.AreEqual(StatusCode.Unknown, e.Status.StatusCode);
}
}
[Test]
public void AsyncUnaryCall()
{
var call = new Call<string, string>(ServiceName, EchoMethod, channel, Metadata.Empty);
var result = Calls.AsyncUnaryCall(call, "ABC", CancellationToken.None).Result;
Assert.AreEqual("ABC", result);
}
[Test]
public void AsyncUnaryCall_ServerHandlerThrows()
{
Task.Run(async () =>
{
var call = new Call<string, string>(ServiceName, EchoMethod, channel, Metadata.Empty);
try
{
await Calls.AsyncUnaryCall(call, "THROW", CancellationToken.None);
Assert.Fail();
}
catch (RpcException e)
{
Assert.AreEqual(StatusCode.Unknown, e.Status.StatusCode);
}
}).Wait();
}
[Test]
public void ClientStreamingCall()
{
Task.Run(async () =>
{
var call = new Call<string, string>(ServiceName, ConcatAndEchoMethod, channel, Metadata.Empty);
var callResult = Calls.AsyncClientStreamingCall(call, CancellationToken.None);
await callResult.RequestStream.WriteAll(new string[] { "A", "B", "C" });
Assert.AreEqual("ABC", await callResult.Result);
}).Wait();
}
[Test]
public void ClientStreamingCall_CancelAfterBegin()
{
Task.Run(async () =>
{
var call = new Call<string, string>(ServiceName, ConcatAndEchoMethod, channel, Metadata.Empty);
var cts = new CancellationTokenSource();
var callResult = Calls.AsyncClientStreamingCall(call, cts.Token);
// TODO(jtattermusch): we need this to ensure call has been initiated once we cancel it.
await Task.Delay(1000);
cts.Cancel();
try
{
await callResult.Result;
}
catch (RpcException e)
{
Assert.AreEqual(StatusCode.Cancelled, e.Status.StatusCode);
}
}).Wait();
}
[Test]
public void UnaryCall_DisposedChannel()
{
channel.Dispose();
var call = new Call<string, string>(ServiceName, EchoMethod, channel, Metadata.Empty);
Assert.Throws(typeof(ObjectDisposedException), () => Calls.BlockingUnaryCall(call, "ABC", CancellationToken.None));
}
[Test]
public void UnaryCallPerformance()
{
var call = new Call<string, string>(ServiceName, EchoMethod, channel, Metadata.Empty);
BenchmarkUtil.RunBenchmark(100, 100,
() => { Calls.BlockingUnaryCall(call, "ABC", default(CancellationToken)); });
}
[Test]
public void UnknownMethodHandler()
{
var call = new Call<string, string>(ServiceName, NonexistentMethod, channel, Metadata.Empty);
try
{
Calls.BlockingUnaryCall(call, "ABC", default(CancellationToken));
Assert.Fail();
}
catch (RpcException e)
{
Assert.AreEqual(StatusCode.Unimplemented, e.Status.StatusCode);
}
}
private static async Task<string> EchoHandler(ServerCallContext context, string request)
{
if (request == "THROW")
{
throw new Exception("This was thrown on purpose by a test");
}
return request;
}
private static async Task<string> ConcatAndEchoHandler(ServerCallContext context, IAsyncStreamReader<string> requestStream)
{
string result = "";
await requestStream.ForEach(async (request) =>
{
if (request == "THROW")
{
throw new Exception("This was thrown on purpose by a test");
}
result += request;
});
// simulate processing takes some time.
await Task.Delay(250);
return result;
}
}
}
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