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Diffstat (limited to 'src/csharp/Grpc.Core.Tests/TimeoutsTest.cs')
| -rw-r--r-- | src/csharp/Grpc.Core.Tests/TimeoutsTest.cs | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/src/csharp/Grpc.Core.Tests/TimeoutsTest.cs b/src/csharp/Grpc.Core.Tests/TimeoutsTest.cs new file mode 100644 index 0000000000..010ffd898a --- /dev/null +++ b/src/csharp/Grpc.Core.Tests/TimeoutsTest.cs @@ -0,0 +1,207 @@ +#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.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 +{ + /// <summary> + /// Tests for Deadline support. + /// </summary> + public class TimeoutsTest + { + const string Host = "localhost"; + const string ServiceName = "/tests.Test"; + + static readonly Method<string, string> TestMethod = new Method<string, string>( + MethodType.Unary, + "/tests.Test/Test", + Marshallers.StringMarshaller, + Marshallers.StringMarshaller); + + static readonly ServerServiceDefinition ServiceDefinition = ServerServiceDefinition.CreateBuilder(ServiceName) + .AddMethod(TestMethod, TestMethodHandler) + .Build(); + + // provides a way how to retrieve an out-of-band result value from server handler + static TaskCompletionSource<string> stringFromServerHandlerTcs; + + Server server; + Channel channel; + + [SetUp] + public void Init() + { + server = new Server(); + server.AddServiceDefinition(ServiceDefinition); + int port = server.AddPort(Host, Server.PickUnusedPort, ServerCredentials.Insecure); + server.Start(); + channel = new Channel(Host, port, Credentials.Insecure); + + stringFromServerHandlerTcs = new TaskCompletionSource<string>(); + } + + [TearDown] + public void Cleanup() + { + channel.Dispose(); + server.ShutdownAsync().Wait(); + } + + [TestFixtureTearDown] + public void CleanupClass() + { + GrpcEnvironment.Shutdown(); + } + + [Test] + public void InfiniteDeadline() + { + // no deadline specified, check server sees infinite deadline + var internalCall = new Call<string, string>(ServiceName, TestMethod, channel, Metadata.Empty); + Assert.AreEqual("DATETIME_MAXVALUE", Calls.BlockingUnaryCall(internalCall, "RETURN_DEADLINE", CancellationToken.None)); + + // DateTime.MaxValue deadline specified, check server sees infinite deadline + var internalCall2 = new Call<string, string>(ServiceName, TestMethod, channel, Metadata.Empty, DateTime.MaxValue); + Assert.AreEqual("DATETIME_MAXVALUE", Calls.BlockingUnaryCall(internalCall2, "RETURN_DEADLINE", CancellationToken.None)); + } + + [Test] + public void DeadlineTransferredToServer() + { + var remainingTimeClient = TimeSpan.FromDays(7); + var deadline = DateTime.UtcNow + remainingTimeClient; + Thread.Sleep(1000); + var internalCall = new Call<string, string>(ServiceName, TestMethod, channel, Metadata.Empty, deadline); + + var serverDeadlineTicksString = Calls.BlockingUnaryCall(internalCall, "RETURN_DEADLINE", CancellationToken.None); + var serverDeadline = new DateTime(long.Parse(serverDeadlineTicksString), DateTimeKind.Utc); + + // A fairly relaxed check that the deadline set by client and deadline seen by server + // are in agreement. C core takes care of the work with transferring deadline over the wire, + // so we don't need an exact check here. + Assert.IsTrue(Math.Abs((deadline - serverDeadline).TotalMilliseconds) < 5000); + } + + [Test] + public void DeadlineInThePast() + { + var deadline = DateTime.MinValue; + var internalCall = new Call<string, string>(ServiceName, TestMethod, channel, Metadata.Empty, deadline); + + try + { + Calls.BlockingUnaryCall(internalCall, "TIMEOUT", CancellationToken.None); + Assert.Fail(); + } + catch (RpcException e) + { + Assert.AreEqual(StatusCode.DeadlineExceeded, e.Status.StatusCode); + } + } + + [Test] + public void DeadlineExceededStatusOnTimeout() + { + var deadline = DateTime.UtcNow.Add(TimeSpan.FromSeconds(5)); + var internalCall = new Call<string, string>(ServiceName, TestMethod, channel, Metadata.Empty, deadline); + + try + { + Calls.BlockingUnaryCall(internalCall, "TIMEOUT", CancellationToken.None); + Assert.Fail(); + } + catch (RpcException e) + { + Assert.AreEqual(StatusCode.DeadlineExceeded, e.Status.StatusCode); + } + } + + [Test] + public void ServerReceivesCancellationOnTimeout() + { + var deadline = DateTime.UtcNow.Add(TimeSpan.FromSeconds(5)); + var internalCall = new Call<string, string>(ServiceName, TestMethod, channel, Metadata.Empty, deadline); + + try + { + Calls.BlockingUnaryCall(internalCall, "CHECK_CANCELLATION_RECEIVED", CancellationToken.None); + Assert.Fail(); + } + catch (RpcException e) + { + Assert.AreEqual(StatusCode.DeadlineExceeded, e.Status.StatusCode); + } + Assert.AreEqual("CANCELLED", stringFromServerHandlerTcs.Task.Result); + } + + private static async Task<string> TestMethodHandler(string request, ServerCallContext context) + { + if (request == "TIMEOUT") + { + await Task.Delay(60000); + return ""; + } + + if (request == "RETURN_DEADLINE") + { + if (context.Deadline == DateTime.MaxValue) + { + return "DATETIME_MAXVALUE"; + } + + return context.Deadline.Ticks.ToString(); + } + + if (request == "CHECK_CANCELLATION_RECEIVED") + { + // wait until cancellation token is fired. + var tcs = new TaskCompletionSource<object>(); + context.CancellationToken.Register(() => { tcs.SetResult(null); }); + await tcs.Task; + stringFromServerHandlerTcs.SetResult("CANCELLED"); + return ""; + } + + return ""; + } + } +} |