Test: System.Net.Http.WinHttpHandlerFunctional.Tests.WinHttpHandlerTest/SendAsync_SlowServerAndCancel_ThrowsTaskCanceledException failed with "Xunit.Sdk.ThrowsException"

Opened on behalf of @JiayiLi1

The test System.Net.Http.WinHttpHandlerFunctional.Tests.WinHttpHandlerTest/SendAsync_SlowServerAndCancel_ThrowsTaskCanceledException has failed.

Assert.Throws() Failure\r
Expected: typeof(System.AggregateException)\r
Actual: (No exception was thrown)

    Stack Trace:

       at System.Net.Http.WinHttpHandlerFunctional.Tests.WinHttpHandlerTest.<SendAsync_SlowServerAndCancel_ThrowsTaskCanceledException>d__5.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)

Build : Master - 20170510.02 (Portable Core Tests)
Failing configurations:

• Windows.10.Amd64-x64
  • Release

Detail: https://mc.dot.net/#/product/netcore/master/source/official~2Fcorefx~2Fmaster~2F/type/test~2Ffunctional~2Fportable~2Fcli~2F/build/20170510.02/workItem/System.Net.Http.WinHttpHandler.Functional.Tests/analysis/xunit/System.Net.Http.WinHttpHandlerFunctional.Tests.WinHttpHandlerTest~2FSendAsync_SlowServerAndCancel_ThrowsTaskCanceledException

[davidsh]

This should have been disabled (related issue #20675) similar to test:

        [ActiveIssue(17234)]
        [OuterLoop] // TODO: Issue dotnet/runtime#18406
        [Fact]
        [OuterLoop]
        public void SendAsync_SlowServerRespondsAfterDefaultReceiveTimeout_ThrowsHttpRequestException()
        {

And needs to use a loopback server in order to better control "slow server" behavior.

[v-haren]

failed again: https://ci.dot.net/job/dotnet_corefx/job/master/job/outerloop_netcoreapp_windows_nt_debug/82/testReport/System.Net.Http.WinHttpHandlerFunctional.Tests/WinHttpHandlerTest/SendAsync_SlowServerAndCancel_ThrowsTaskCanceledException/

[KristinXie1]

This issue is repro on full framework tests, detail: https://mc.dot.net/#/product/netcore/master/source/official~2Fcorefx~2Fmaster~2F/type/test~2Ffunctional~2Fdesktop~2Fcli~2F/build/20170809.01/workItem/System.Net.Http.WinHttpHandler.Functional.Tests/analysis/xunit/System.Net.Http.WinHttpHandlerFunctional.Tests.WinHttpHandlerTest~2FSendAsync_SlowServerAndCancel_ThrowsTaskCanceledException

[KristinXie1]

The test System.Net.Http.WinHttpHandlerFunctional.Tests.WinHttpHandlerTest/SendAsync_SlowServerAndCancel_ThrowsTaskCanceledException failed again.

Assert.Throws() Failure\r
Expected: typeof(System.AggregateException)\r
Actual: (No exception was thrown)

    Stack Trace:

       at System.Net.Http.WinHttpHandlerFunctional.Tests.WinHttpHandlerTest.<SendAsync_SlowServerAndCancel_ThrowsTaskCanceledException>d__5.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)

Build : 2.0.0 - 20170822.02 (Core Tests)
Failing configurations:

• Windows.81.Amd64-x86
  • Release

Detail: https://mc.dot.net/#/product/netcore/200/source/official~2Fcorefx~2Frelease~2F2.0.0-msrc~2F/type/test~2Ffunctional~2Fcli~2F/build/20170822.02/workItem/System.Net.Http.WinHttpHandler.Functional.Tests/analysis/xunit/System.Net.Http.WinHttpHandlerFunctional.Tests.WinHttpHandlerTest~2FSendAsync_SlowServerAndCancel_ThrowsTaskCanceledException

[karelz]

Seems to be gone. Official Helix runs have only 3 failures in 2017/8, then nothing:

Day	Build	OS
8/8	20170808.02	Win8.1
8/23	20170823.04	Win10
8/23	20170823.04	Win10

Closing. Please reopen if it happens again.

[antonfirsov]

Happened again in #47230:
https://dev.azure.com/dnceng/public/_build/results?buildId=961825&view=ms.vss-test-web.build-test-results-tab&runId=30306908&resultId=103650&paneView=debug

Single occurence according to kusto, very likely CI overload, not reopenig.