ClientServerTest.cs

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#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> UnaryEchoStringMethod = new Method<string, string>(
            MethodType.Unary,
            "/tests.Test/UnaryEchoString",
            Marshallers.StringMarshaller,
            Marshallers.StringMarshaller);

        static readonly ServerServiceDefinition ServiceDefinition = ServerServiceDefinition.CreateBuilder(ServiceName)
            .AddMethod(UnaryEchoStringMethod, HandleUnaryEchoString).Build();

        [TestFixtureSetUp]
        public void Init()
        {
            GrpcEnvironment.Initialize();
        }

        [TestFixtureTearDown]
        public void Cleanup()
        {
            GrpcEnvironment.Shutdown();
        }

        [Test]
        public void UnaryCall()
        {
            var server = new Server();
            server.AddServiceDefinition(ServiceDefinition);
            int port = server.AddListeningPort(Host + ":0");
            server.Start();

            using (Channel channel = new Channel(Host + ":" + port))
            {
                var call = new Call<string, string>(ServiceName, UnaryEchoStringMethod, channel, Metadata.Empty);
                Assert.AreEqual("ABC", Calls.BlockingUnaryCall(call, "ABC", default(CancellationToken)));
            }

            server.ShutdownAsync().Wait();
        }

        [Test]
        public void CallOnDisposedChannel()
        {
            var server = new Server();
            server.AddServiceDefinition(ServiceDefinition);
            int port = server.AddListeningPort(Host + ":0");
            server.Start();

            Channel channel = new Channel(Host + ":" + port);
            channel.Dispose();

            var call = new Call<string, string>(ServiceName, UnaryEchoStringMethod, channel, Metadata.Empty);
            try
            {
              Calls.BlockingUnaryCall(call, "ABC", default(CancellationToken));
              Assert.Fail();
            }
            catch (ObjectDisposedException e)
            {
            }

            server.ShutdownAsync().Wait();
        }

        [Test]
        public void UnaryCallPerformance()
        {
            var server = new Server();
            server.AddServiceDefinition(ServiceDefinition);
            int port = server.AddListeningPort(Host + ":0");
            server.Start();

            using (Channel channel = new Channel(Host + ":" + port))
            {
                var call = new Call<string, string>(ServiceName, UnaryEchoStringMethod, channel, Metadata.Empty);
                BenchmarkUtil.RunBenchmark(100, 100,
                                           () => { Calls.BlockingUnaryCall(call, "ABC", default(CancellationToken)); });
            }

            server.ShutdownAsync().Wait();
        }

        [Test]
        public void UnknownMethodHandler()
        {
            var server = new Server();
            server.AddServiceDefinition(ServerServiceDefinition.CreateBuilder(ServiceName).Build());
            int port = server.AddListeningPort(Host + ":0");
            server.Start();

            using (Channel channel = new Channel(Host + ":" + port))
            {
                var call = new Call<string, string>(ServiceName, UnaryEchoStringMethod, channel, Metadata.Empty);
                try
                {
                    Calls.BlockingUnaryCall(call, "ABC", default(CancellationToken));
                    Assert.Fail();
                }
                catch (RpcException e)
                {
                    Assert.AreEqual(StatusCode.Unimplemented, e.Status.StatusCode);
                }
            }

            server.ShutdownAsync().Wait();
        }

        /// <summary>
        /// Handler for unaryEchoString method.
        /// </summary>
        private static Task<string> HandleUnaryEchoString(string request)
        {
            return Task.FromResult(request);
        }
    }
}