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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System;
using System.Collections.Generic;
using System.Threading;
using Microsoft.Build.BackEnd;
using Microsoft.Build.BackEnd.Logging;
using Microsoft.Build.Execution;
using Microsoft.Build.Framework;
using Microsoft.Build.Shared;
using LegacyThreadingData = Microsoft.Build.Execution.LegacyThreadingData;
using Xunit;
#nullable disable
namespace Microsoft.Build.UnitTests.BackEnd
{
public class NodeEndpointInProc_Tests
{
private delegate void EndpointOperationDelegate(NodeEndpointInProc endpoint);
private sealed class MockHost : IBuildComponentHost, INodePacketFactory
{
private DataReceivedContext _dataReceivedContext;
private AutoResetEvent _dataReceivedEvent;
private BuildParameters _buildParameters;
/// <summary>
/// Retrieves the LegacyThreadingData associated with a particular component host
/// </summary>
private LegacyThreadingData _legacyThreadingData;
public MockHost()
{
_buildParameters = new BuildParameters();
_dataReceivedEvent = new AutoResetEvent(false);
_legacyThreadingData = new LegacyThreadingData();
}
public ILoggingService LoggingService
{
get
{
throw new NotImplementedException();
}
}
/// <summary>
/// Retrieves the LegacyThreadingData associated with a particular component host
/// </summary>
LegacyThreadingData IBuildComponentHost.LegacyThreadingData
{
get
{
return _legacyThreadingData;
}
}
public string Name
{
get
{
return "NodeEndpointInProc_Tests.MockHost";
}
}
public BuildParameters BuildParameters
{
get
{
return _buildParameters;
}
}
#region IBuildComponentHost Members
public IBuildComponent GetComponent(BuildComponentType type)
{
throw new NotImplementedException();
}
public void RegisterFactory(BuildComponentType type, BuildComponentFactoryDelegate factory)
{
}
#endregion
#region INodePacketFactory Members
public void RegisterPacketHandler(NodePacketType packetType, NodePacketFactoryMethod factory, INodePacketHandler handler)
{
throw new NotImplementedException();
}
public void UnregisterPacketHandler(NodePacketType packetType)
{
throw new NotImplementedException();
}
public void DeserializeAndRoutePacket(int nodeId, NodePacketType packetType, ITranslator translator)
{
throw new NotImplementedException();
}
public void RoutePacket(int nodeId, INodePacket packet)
{
_dataReceivedContext = new DataReceivedContext(Thread.CurrentThread, packet);
_dataReceivedEvent.Set();
}
public DataReceivedContext DataReceivedContext
{
get { return _dataReceivedContext; }
}
public WaitHandle DataReceivedEvent
{
get { return _dataReceivedEvent; }
}
#endregion
}
private sealed class TestPacket : INodePacket
{
#region INodePacket Members
public NodePacketType Type
{
get { throw new NotImplementedException(); }
}
public void Translate(ITranslator translator)
{
throw new NotImplementedException();
}
#endregion
}
private struct LinkStatusContext
{
public readonly Thread thread;
public readonly LinkStatus status;
public LinkStatusContext(Thread thread, LinkStatus status)
{
this.thread = thread;
this.status = status;
}
}
private struct DataReceivedContext
{
public readonly Thread thread;
public readonly INodePacket packet;
public DataReceivedContext(Thread thread, INodePacket packet)
{
this.thread = thread;
this.packet = packet;
}
}
private Dictionary<INodeEndpoint, LinkStatusContext> _linkStatusTable;
private MockHost _host;
[Fact]
public void ConstructionWithValidHost()
{
NodeEndpointInProc.EndpointPair endpoints =
NodeEndpointInProc.CreateInProcEndpoints(
NodeEndpointInProc.EndpointMode.Synchronous, _host);
endpoints =
NodeEndpointInProc.CreateInProcEndpoints(
NodeEndpointInProc.EndpointMode.Asynchronous, _host);
}
[Fact]
public void ConstructionSynchronousWithInvalidHost()
{
Assert.Throws<ArgumentNullException>(() =>
{
NodeEndpointInProc.CreateInProcEndpoints(
NodeEndpointInProc.EndpointMode.Synchronous, null);
});
}
[Fact]
public void ConstructionAsynchronousWithInvalidHost()
{
Assert.Throws<ArgumentNullException>(() =>
{
NodeEndpointInProc.CreateInProcEndpoints(
NodeEndpointInProc.EndpointMode.Asynchronous, null);
});
}
/// <summary>
/// Verify that the links:
/// 1. are marked inactive
/// 2. and that attempting to send data while they are
/// inactive throws the expected exception.
/// </summary>
[Fact]
public void InactiveLinkTestSynchronous()
{
NodeEndpointInProc.EndpointPair endpoints =
NodeEndpointInProc.CreateInProcEndpoints(
NodeEndpointInProc.EndpointMode.Synchronous, _host);
CallOpOnEndpoints(endpoints, VerifyLinkInactive);
CallOpOnEndpoints(endpoints, VerifySendDataInvalidOperation);
CallOpOnEndpoints(endpoints, VerifyDisconnectInvalidOperation);
// The following should not throw
endpoints.ManagerEndpoint.Listen(_host);
endpoints.NodeEndpoint.Connect(_host);
}
/// <summary>
/// Verify that the links are marked inactive and that attempting to send data while they are
/// inactive throws the expected exception.
/// </summary>
[Fact]
public void InactiveLinkTestAsynchronous()
{
NodeEndpointInProc.EndpointPair endpoints =
NodeEndpointInProc.CreateInProcEndpoints(
NodeEndpointInProc.EndpointMode.Asynchronous, _host);
CallOpOnEndpoints(endpoints, VerifyLinkInactive);
CallOpOnEndpoints(endpoints, VerifySendDataInvalidOperation);
CallOpOnEndpoints(endpoints, VerifyDisconnectInvalidOperation);
// The following should not throw
endpoints.ManagerEndpoint.Listen(_host);
endpoints.NodeEndpoint.Connect(_host);
endpoints.ManagerEndpoint.Disconnect();
}
[Fact]
public void ConnectionTestSynchronous()
{
NodeEndpointInProc.EndpointPair endpoints =
NodeEndpointInProc.CreateInProcEndpoints(
NodeEndpointInProc.EndpointMode.Synchronous, _host);
endpoints.ManagerEndpoint.OnLinkStatusChanged += LinkStatusChanged;
endpoints.NodeEndpoint.OnLinkStatusChanged += LinkStatusChanged;
// Call listen. This shouldn't have any effect on the link statuses.
endpoints.ManagerEndpoint.Listen(_host);
CallOpOnEndpoints(endpoints, VerifyLinkInactive);
// No link status callback should have occurred.
Assert.False(_linkStatusTable.ContainsKey(endpoints.NodeEndpoint));
Assert.False(_linkStatusTable.ContainsKey(endpoints.ManagerEndpoint));
// Now call connect on the node side. This should activate the link on both ends.
endpoints.NodeEndpoint.Connect(_host);
CallOpOnEndpoints(endpoints, VerifyLinkActive);
// We should have received callbacks informing us of the link change.
Assert.Equal(LinkStatus.Active, _linkStatusTable[endpoints.NodeEndpoint].status);
Assert.Equal(LinkStatus.Active, _linkStatusTable[endpoints.ManagerEndpoint].status);
}
[Fact]
public void DisconnectionTestSynchronous()
{
DisconnectionTestHelper(NodeEndpointInProc.EndpointMode.Synchronous);
}
[Fact]
public void DisconnectionTestAsynchronous()
{
DisconnectionTestHelper(NodeEndpointInProc.EndpointMode.Asynchronous);
}
[Fact]
public void SynchronousData()
{
// Create the endpoints
NodeEndpointInProc.EndpointPair endpoints =
NodeEndpointInProc.CreateInProcEndpoints(
NodeEndpointInProc.EndpointMode.Synchronous, _host);
// Connect the endpoints
endpoints.ManagerEndpoint.Listen(_host);
endpoints.NodeEndpoint.Connect(_host);
// Create our test packets
INodePacket managerPacket = new TestPacket();
INodePacket nodePacket = new TestPacket();
// Send data from the manager. We expect to receive it from the node endpoint, and it should
// be on the same thread.
endpoints.ManagerEndpoint.SendData(managerPacket);
Assert.Equal(_host.DataReceivedContext.packet, managerPacket);
Assert.Equal(_host.DataReceivedContext.thread.ManagedThreadId, Thread.CurrentThread.ManagedThreadId);
// Send data from the node. We expect to receive it from the manager endpoint, and it should
// be on the same thread.
endpoints.NodeEndpoint.SendData(nodePacket);
Assert.Equal(_host.DataReceivedContext.packet, nodePacket);
Assert.Equal(_host.DataReceivedContext.thread.ManagedThreadId, Thread.CurrentThread.ManagedThreadId);
}
[Fact]
public void AsynchronousData()
{
// Create the endpoints
NodeEndpointInProc.EndpointPair endpoints =
NodeEndpointInProc.CreateInProcEndpoints(
NodeEndpointInProc.EndpointMode.Asynchronous, _host);
// Connect the endpoints
endpoints.ManagerEndpoint.Listen(_host);
endpoints.NodeEndpoint.Connect(_host);
// Create our test packets
INodePacket managerPacket = new TestPacket();
INodePacket nodePacket = new TestPacket();
// Send data from the manager. We expect to receive it from the node endpoint, and it should
// be on the same thread.
endpoints.ManagerEndpoint.SendData(managerPacket);
if (!_host.DataReceivedEvent.WaitOne(1000))
{
Assert.True(false, "Data not received before timeout expired.");
}
Assert.Equal(_host.DataReceivedContext.packet, managerPacket);
Assert.NotEqual(_host.DataReceivedContext.thread.ManagedThreadId, Thread.CurrentThread.ManagedThreadId);
// Send data from the node. We expect to receive it from the manager endpoint, and it should
// be on the same thread.
endpoints.NodeEndpoint.SendData(nodePacket);
if (!_host.DataReceivedEvent.WaitOne(1000))
{
Assert.True(false, "Data not received before timeout expired.");
}
Assert.Equal(_host.DataReceivedContext.packet, nodePacket);
Assert.NotEqual(_host.DataReceivedContext.thread.ManagedThreadId, Thread.CurrentThread.ManagedThreadId);
endpoints.ManagerEndpoint.Disconnect();
}
public NodeEndpointInProc_Tests()
{
_linkStatusTable = new Dictionary<INodeEndpoint, LinkStatusContext>();
_host = new MockHost();
}
private void CallOpOnEndpoints(NodeEndpointInProc.EndpointPair pair, EndpointOperationDelegate opDelegate)
{
opDelegate(pair.NodeEndpoint);
opDelegate(pair.ManagerEndpoint);
}
private void VerifyLinkInactive(NodeEndpointInProc endpoint)
{
Assert.Equal(LinkStatus.Inactive, endpoint.LinkStatus); // "Expected LinkStatus to be Inactive"
}
private void VerifyLinkActive(NodeEndpointInProc endpoint)
{
Assert.Equal(LinkStatus.Active, endpoint.LinkStatus); // "Expected LinkStatus to be Active"
}
private void VerifySendDataInvalidOperation(NodeEndpointInProc endpoint)
{
bool caught = false;
try
{
endpoint.SendData(new TestPacket());
}
catch (InternalErrorException)
{
caught = true;
}
Assert.True(caught); // "Did not receive InternalErrorException."
}
private void VerifyDisconnectInvalidOperation(NodeEndpointInProc endpoint)
{
bool caught = false;
try
{
endpoint.Disconnect();
}
catch (InternalErrorException)
{
caught = true;
}
Assert.True(caught); // "Did not receive InternalErrorException."
}
private void DisconnectionTestHelper(NodeEndpointInProc.EndpointMode mode)
{
NodeEndpointInProc.EndpointPair endpoints = SetupConnection(mode);
endpoints.ManagerEndpoint.Disconnect();
VerifyLinksAndCallbacksInactive(endpoints);
endpoints = SetupConnection(mode);
endpoints.NodeEndpoint.Disconnect();
VerifyLinksAndCallbacksInactive(endpoints);
}
private void VerifyLinksAndCallbacksInactive(NodeEndpointInProc.EndpointPair endpoints)
{
CallOpOnEndpoints(endpoints, VerifyLinkInactive);
Assert.Equal(LinkStatus.Inactive, _linkStatusTable[endpoints.NodeEndpoint].status);
Assert.Equal(LinkStatus.Inactive, _linkStatusTable[endpoints.ManagerEndpoint].status);
}
private NodeEndpointInProc.EndpointPair SetupConnection(NodeEndpointInProc.EndpointMode mode)
{
NodeEndpointInProc.EndpointPair endpoints =
NodeEndpointInProc.CreateInProcEndpoints(mode, _host);
endpoints.ManagerEndpoint.OnLinkStatusChanged += LinkStatusChanged;
endpoints.NodeEndpoint.OnLinkStatusChanged += LinkStatusChanged;
// Call listen. This shouldn't have any effect on the link statuses.
endpoints.ManagerEndpoint.Listen(_host);
endpoints.NodeEndpoint.Connect(_host);
return endpoints;
}
private void LinkStatusChanged(INodeEndpoint endpoint, LinkStatus status)
{
lock (_linkStatusTable)
{
_linkStatusTable[endpoint] = new LinkStatusContext(Thread.CurrentThread, status);
}
}
}
}
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