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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.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
{
MockServiceHelper helper;
Server server;
Channel channel;
[SetUp]
public void Init()
{
helper = new MockServiceHelper();
server = helper.GetServer();
server.Start();
channel = helper.GetChannel();
}
[TearDown]
public void Cleanup()
{
channel.ShutdownAsync().Wait();
server.ShutdownAsync().Wait();
}
[Test]
public void InfiniteDeadline()
{
helper.UnaryHandler = new UnaryServerMethod<string, string>((request, context) =>
{
Assert.AreEqual(DateTime.MaxValue, context.Deadline);
return Task.FromResult("PASS");
});
// no deadline specified, check server sees infinite deadline
Assert.AreEqual("PASS", Calls.BlockingUnaryCall(helper.CreateUnaryCall(), "abc"));
// DateTime.MaxValue deadline specified, check server sees infinite deadline
Assert.AreEqual("PASS", Calls.BlockingUnaryCall(helper.CreateUnaryCall(new CallOptions(deadline: DateTime.MaxValue)), "abc"));
}
[Test]
public void DeadlineTransferredToServer()
{
var clientDeadline = DateTime.UtcNow + TimeSpan.FromDays(7);
helper.UnaryHandler = new UnaryServerMethod<string, string>((request, context) =>
{
// 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((clientDeadline - context.Deadline).TotalMilliseconds) < 5000);
return Task.FromResult("PASS");
});
Calls.BlockingUnaryCall(helper.CreateUnaryCall(new CallOptions(deadline: clientDeadline)), "abc");
}
[Test]
public void DeadlineInThePast()
{
helper.UnaryHandler = new UnaryServerMethod<string, string>(async (request, context) =>
{
await Task.Delay(60000);
return "FAIL";
});
var ex = Assert.Throws<RpcException>(() => Calls.BlockingUnaryCall(helper.CreateUnaryCall(new CallOptions(deadline: DateTime.MinValue)), "abc"));
// We can't guarantee the status code always DeadlineExceeded. See issue #2685.
Assert.Contains(ex.Status.StatusCode, new[] { StatusCode.DeadlineExceeded, StatusCode.Internal });
}
[Test]
public void DeadlineExceededStatusOnTimeout()
{
helper.UnaryHandler = new UnaryServerMethod<string, string>(async (request, context) =>
{
await Task.Delay(60000);
return "FAIL";
});
var ex = Assert.Throws<RpcException>(() => Calls.BlockingUnaryCall(helper.CreateUnaryCall(new CallOptions(deadline: DateTime.UtcNow.Add(TimeSpan.FromSeconds(5)))), "abc"));
// We can't guarantee the status code always DeadlineExceeded. See issue #2685.
Assert.Contains(ex.Status.StatusCode, new[] { StatusCode.DeadlineExceeded, StatusCode.Internal });
}
[Test]
public async Task ServerReceivesCancellationOnTimeout()
{
var serverReceivedCancellationTcs = new TaskCompletionSource<bool>();
helper.UnaryHandler = new UnaryServerMethod<string, string>(async (request, context) =>
{
// wait until cancellation token is fired.
var tcs = new TaskCompletionSource<object>();
context.CancellationToken.Register(() => { tcs.SetResult(null); });
await tcs.Task;
serverReceivedCancellationTcs.SetResult(true);
return "";
});
var ex = Assert.Throws<RpcException>(() => Calls.BlockingUnaryCall(helper.CreateUnaryCall(new CallOptions(deadline: DateTime.UtcNow.Add(TimeSpan.FromSeconds(5)))), "abc"));
// We can't guarantee the status code always DeadlineExceeded. See issue #2685.
Assert.Contains(ex.Status.StatusCode, new[] { StatusCode.DeadlineExceeded, StatusCode.Internal });
Assert.IsTrue(await serverReceivedCancellationTcs.Task);
}
}
}
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