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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.Collections.Generic;
using System.Runtime.InteropServices;
using System.Threading.Tasks;
using Grpc.Core.Internal;
using NUnit.Framework;
namespace Grpc.Core.Internal.Tests
{
/// <summary>
/// Uses fake native call to test interaction of <c>AsyncCallServer</c> wrapping code with C core in different situations.
/// </summary>
public class AsyncCallServerTest
{
Server server;
FakeNativeCall fakeCall;
AsyncCallServer<string, string> asyncCallServer;
[SetUp]
public void Init()
{
// Create a fake server just so we have an instance to refer to.
// The server won't actually be used at all.
server = new Server()
{
Ports = { { "localhost", 0, ServerCredentials.Insecure } }
};
server.Start();
fakeCall = new FakeNativeCall();
asyncCallServer = new AsyncCallServer<string, string>(
Marshallers.StringMarshaller.Serializer, Marshallers.StringMarshaller.Deserializer,
server);
asyncCallServer.InitializeForTesting(fakeCall);
}
[TearDown]
public void Cleanup()
{
server.ShutdownAsync().Wait();
}
[Test]
public void CancelNotificationAfterStartDisposes()
{
var finishedTask = asyncCallServer.ServerSideCallAsync();
fakeCall.ReceivedCloseOnServerHandler(true, cancelled: true);
AssertFinished(asyncCallServer, fakeCall, finishedTask);
}
[Test]
public void CancelNotificationAfterStartDisposesAfterPendingReadFinishes()
{
var finishedTask = asyncCallServer.ServerSideCallAsync();
var requestStream = new ServerRequestStream<string, string>(asyncCallServer);
var moveNextTask = requestStream.MoveNext();
fakeCall.ReceivedCloseOnServerHandler(true, cancelled: true);
fakeCall.ReceivedMessageHandler(true, null);
Assert.IsFalse(moveNextTask.Result);
AssertFinished(asyncCallServer, fakeCall, finishedTask);
}
[Test]
public void ReadAfterCancelNotificationCanSucceed()
{
var finishedTask = asyncCallServer.ServerSideCallAsync();
var requestStream = new ServerRequestStream<string, string>(asyncCallServer);
fakeCall.ReceivedCloseOnServerHandler(true, cancelled: true);
// Check that starting a read after cancel notification has been processed is legal.
var moveNextTask = requestStream.MoveNext();
Assert.IsFalse(moveNextTask.Result);
AssertFinished(asyncCallServer, fakeCall, finishedTask);
}
[Test]
public void ReadCompletionFailureClosesRequestStream()
{
var finishedTask = asyncCallServer.ServerSideCallAsync();
var requestStream = new ServerRequestStream<string, string>(asyncCallServer);
// if a read completion's success==false, the request stream will silently finish
// and we rely on C core cancelling the call.
var moveNextTask = requestStream.MoveNext();
fakeCall.ReceivedMessageHandler(false, null);
Assert.IsFalse(moveNextTask.Result);
fakeCall.ReceivedCloseOnServerHandler(true, cancelled: true);
AssertFinished(asyncCallServer, fakeCall, finishedTask);
}
[Test]
public void WriteAfterCancelNotificationFails()
{
var finishedTask = asyncCallServer.ServerSideCallAsync();
var responseStream = new ServerResponseStream<string, string>(asyncCallServer);
fakeCall.ReceivedCloseOnServerHandler(true, cancelled: true);
// TODO(jtattermusch): should we throw a different exception type instead?
Assert.Throws(typeof(InvalidOperationException), () => responseStream.WriteAsync("request1"));
AssertFinished(asyncCallServer, fakeCall, finishedTask);
}
[Test]
public void WriteCompletionFailureThrows()
{
var finishedTask = asyncCallServer.ServerSideCallAsync();
var responseStream = new ServerResponseStream<string, string>(asyncCallServer);
var writeTask = responseStream.WriteAsync("request1");
fakeCall.SendCompletionHandler(false);
// TODO(jtattermusch): should we throw a different exception type instead?
Assert.ThrowsAsync(typeof(InvalidOperationException), async () => await writeTask);
fakeCall.ReceivedCloseOnServerHandler(true, cancelled: true);
AssertFinished(asyncCallServer, fakeCall, finishedTask);
}
[Test]
public void WriteAndWriteStatusCanRunConcurrently()
{
var finishedTask = asyncCallServer.ServerSideCallAsync();
var responseStream = new ServerResponseStream<string, string>(asyncCallServer);
var writeTask = responseStream.WriteAsync("request1");
var writeStatusTask = asyncCallServer.SendStatusFromServerAsync(Status.DefaultSuccess, new Metadata(), null);
fakeCall.SendCompletionHandler(true);
fakeCall.SendStatusFromServerHandler(true);
Assert.DoesNotThrowAsync(async () => await writeTask);
Assert.DoesNotThrowAsync(async () => await writeStatusTask);
fakeCall.ReceivedCloseOnServerHandler(true, cancelled: true);
AssertFinished(asyncCallServer, fakeCall, finishedTask);
}
[Test]
public void WriteAfterWriteStatusThrowsInvalidOperationException()
{
var finishedTask = asyncCallServer.ServerSideCallAsync();
var responseStream = new ServerResponseStream<string, string>(asyncCallServer);
asyncCallServer.SendStatusFromServerAsync(Status.DefaultSuccess, new Metadata(), null);
Assert.ThrowsAsync(typeof(InvalidOperationException), async () => await responseStream.WriteAsync("request1"));
fakeCall.SendStatusFromServerHandler(true);
fakeCall.ReceivedCloseOnServerHandler(true, cancelled: true);
AssertFinished(asyncCallServer, fakeCall, finishedTask);
}
static void AssertFinished(AsyncCallServer<string, string> asyncCallServer, FakeNativeCall fakeCall, Task finishedTask)
{
Assert.IsTrue(fakeCall.IsDisposed);
Assert.IsTrue(finishedTask.IsCompleted);
Assert.DoesNotThrow(() => finishedTask.Wait());
}
}
}
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