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osa0805
Mar 27, 2026

When running tests from TestExplorer in Rider and exception is thrown in [Before(TestSession)] method there is no Exception visible in logs. There is only JetBrains exception as below. Is it possible to see actual exception ?

`Last runner error: Exception of type 'JetBrains.JsonRpc.JsonRpcInternalErrorException' was thrown.

--- EXCEPTION #1/2 [JsonRpcInternalErrorException]
StackTraceString = “
at JetBrains.JsonRpc.JsonRpc.InvokeAsync[TResult](String method, IReadOnlyList1 args, CancellationToken ct) in InvokeAsync.il:line IL_0268 mvid 4CB9 at JetBrains.ReSharper.UnitTestFramework.Common.Extensions.TaskExtensions.ThrowIf[TResult,TException](Task1 task, Task signallingTask, Func1 exceptionFactory) in ThrowIf.il:line IL_0000 mvid 9DBA at JetBrains.ReSharper.UnitTestFramework.Common.Extensions.TaskExtensions.CancelIf[TResult](Task1 task, CancellationToken ct) in CancelIf.il:line IL_0000 mvid 9DBA
at JetBrains.ReSharper.UnitTesting.VsTest.Provider.TestingPlatform.TestingPlatformRunStrategy.Run(IUnitTestRun run) in Run.il:line IL_01A6 mvid 8028
at JetBrains.ReSharper.UnitTestFramework.Execution.Launch.UnitTestRun.StartCore(CancellationToken onCancel, CancellationToken onAbort) in StartCore.il:line IL_0000 mvid 9DBA or StartCore.il:line IL_01E7 mvid 9DBA
at JetBrains.ReSharper.UnitTestFramework.Execution.Launch.UnitTestRun.<>c.b__37_0(ExceptionDispatchInfo e) in UnitTestRun.il:line IL_0000 mvid 9DBA
at JetBrains.ReSharper.UnitTestFramework.Execution.Launch.UnitTestRun.StartCore(CancellationToken onCancel, CancellationToken onAbort) in StartCore.il:line IL_0000 mvid 9DBA or StartCore.il:line IL_01E7 mvid 9DBA
at JetBrains.ReSharper.UnitTestFramework.Execution.Launch.UnitTestRun.Start(CancellationToken onCancel, CancellationToken onAbort) in Start.il:line IL_0182 mvid 9DBA
”
ExceptionPath = Root.InnerException
ClassName = JetBrains.JsonRpc.JsonRpcInternalErrorException
HResult = COR_E_EXCEPTION=80131500
Source = System.Private.CoreLib

--- Outer ---

--- EXCEPTION #2/2 [LoggerException]
Message = “Exception of type 'JetBrains.JsonRpc.JsonRpcInternalErrorException' was thrown.”
InnerException = “Exception #1 at Root.InnerException”
StackTraceString = “
at JetBrains.Util.ILoggerEx.Error(ILogger logger, Exception exception, ExceptionOrigin origin, String comment) in Error.il:line IL_0000 mvid 594E
at JetBrains.ReSharper.UnitTestFramework.Execution.Launch.UnitTestRun.Start(CancellationToken onCancel, CancellationToken onAbort) in Start.il:line IL_0182 mvid 9DBA
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder1.AsyncStateMachineBox1.ExecutionContextCallback(Object s) in ExecutionContextCallback.il:line IL_0000 mvid 5342
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) in RunInternal.il:line IL_0040 mvid 5342
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder1.AsyncStateMachineBox1.MoveNext(Thread threadPoolThread) in MoveNext.il:line IL_0000 mvid 5342 or MoveNext.il:line IL_003A mvid 5342
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder1.AsyncStateMachineBox1.MoveNext() in MoveNext.il:line IL_0000 mvid 5342 or MoveNext.il:line IL_003A mvid 5342
at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(IAsyncStateMachineBox box, Boolean allowInlining) in RunOrScheduleAction.il:line IL_003B mvid 5342
at System.Threading.Tasks.Task.RunContinuations(Object continuationObject) in RunContinuations.il:line IL_0065 mvid 5342 or RunContinuations.il:line IL_0090 mvid 5342
at System.Threading.Tasks.Task.FinishSlow(Boolean userDelegateExecute) in FinishSlow.il:line IL_0003 mvid 5342
at System.Threading.Tasks.Task.TrySetException(Object exceptionObject) in TrySetException.il:line IL_0022 mvid 5342
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder1.SetException(Exception exception, Task1& taskField) in SetException.il:line IL_0025 mvid 5342
at JetBrains.ReSharper.UnitTestFramework.Execution.Launch.UnitTestRun.StartCore(CancellationToken onCancel, CancellationToken onAbort) in StartCore.il:line IL_0000 mvid 9DBA
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder1.AsyncStateMachineBox1.ExecutionContextCallback(Object s) in ExecutionContextCallback.il:line IL_0000 mvid 5342
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) in RunInternal.il:line IL_0040 mvid 5342
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder1.AsyncStateMachineBox1.MoveNext(Thread threadPoolThread) in MoveNext.il:line IL_0000 mvid 5342 or MoveNext.il:line IL_003A mvid 5342
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder1.AsyncStateMachineBox1.MoveNext() in MoveNext.il:line IL_0000 mvid 5342 or MoveNext.il:line IL_003A mvid 5342
at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(IAsyncStateMachineBox box, Boolean allowInlining) in RunOrScheduleAction.il:line IL_003B mvid 5342
at System.Threading.Tasks.Task.RunContinuations(Object continuationObject) in RunContinuations.il:line IL_0065 mvid 5342 or RunContinuations.il:line IL_0090 mvid 5342
at System.Threading.Tasks.Task.FinishSlow(Boolean userDelegateExecute) in FinishSlow.il:line IL_0003 mvid 5342
at System.Threading.Tasks.Task.TrySetException(Object exceptionObject) in TrySetException.il:line IL_0022 mvid 5342
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder1.SetException(Exception exception, Task1& taskField) in SetException.il:line IL_0025 mvid 5342
at JetBrains.ReSharper.UnitTesting.VsTest.Provider.TestingPlatform.TestingPlatformRunStrategy.Run(IUnitTestRun run) in Run.il:line IL_01A6 mvid 8028
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) in RunInternal.il:line IL_0040 mvid 5342
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder1.AsyncStateMachineBox1.MoveNext(Thread threadPoolThread) in MoveNext.il:line IL_0000 mvid 5342 or MoveNext.il:line IL_003A mvid 5342
at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(IAsyncStateMachineBox box, Boolean allowInlining) in RunOrScheduleAction.il:line IL_003B mvid 5342
at System.Threading.Tasks.Task.RunContinuations(Object continuationObject) in RunContinuations.il:line IL_0065 mvid 5342 or RunContinuations.il:line IL_0090 mvid 5342
at System.Threading.Tasks.Task.FinishSlow(Boolean userDelegateExecute) in FinishSlow.il:line IL_0003 mvid 5342
at System.Threading.Tasks.Task.TrySetException(Object exceptionObject) in TrySetException.il:line IL_0022 mvid 5342
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder1.SetException(Exception exception, Task1& taskField) in SetException.il:line IL_0025 mvid 5342
at JetBrains.ReSharper.UnitTestFramework.Common.Extensions.TaskExtensions.CancelIf[TResult](Task1 task, CancellationToken ct) in CancelIf.il:line IL_0000 mvid 9DBA at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) in RunInternal.il:line IL_0040 mvid 5342 at System.Runtime.CompilerServices.AsyncTaskMethodBuilder1.AsyncStateMachineBox1.MoveNext(Thread threadPoolThread) in MoveNext.il:line IL_0000 mvid 5342 or MoveNext.il:line IL_003A mvid 5342 at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(IAsyncStateMachineBox box, Boolean allowInlining) in RunOrScheduleAction.il:line IL_003B mvid 5342 at System.Threading.Tasks.Task.RunContinuations(Object continuationObject) in RunContinuations.il:line IL_0065 mvid 5342 or RunContinuations.il:line IL_0090 mvid 5342 at System.Threading.Tasks.Task1.TrySetResult(TResult result) in TrySetResult.il:line IL_004B mvid 5342
at System.Threading.Tasks.Task.TwoTaskWhenAnyPromise1.Invoke(Task completingTask) in Invoke.il:line IL_0088 mvid 5342 at System.Threading.Tasks.Task.RunContinuations(Object continuationObject) in RunContinuations.il:line IL_0065 mvid 5342 or RunContinuations.il:line IL_0090 mvid 5342 at System.Threading.Tasks.Task.FinishSlow(Boolean userDelegateExecute) in FinishSlow.il:line IL_0003 mvid 5342 at System.Threading.Tasks.Task.TrySetException(Object exceptionObject) in TrySetException.il:line IL_0022 mvid 5342 at System.Runtime.CompilerServices.AsyncTaskMethodBuilder1.SetException(Exception exception, Task1& taskField) in SetException.il:line IL_0025 mvid 5342 at JetBrains.ReSharper.UnitTestFramework.Common.Extensions.TaskExtensions.ThrowIf[TResult,TException](Task1 task, Task signallingTask, Func1 exceptionFactory) in ThrowIf.il:line IL_0000 mvid 9DBA at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) in RunInternal.il:line IL_0040 mvid 5342 at System.Runtime.CompilerServices.AsyncTaskMethodBuilder1.AsyncStateMachineBox1.MoveNext(Thread threadPoolThread) in MoveNext.il:line IL_0000 mvid 5342 or MoveNext.il:line IL_003A mvid 5342 at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(IAsyncStateMachineBox box, Boolean allowInlining) in RunOrScheduleAction.il:line IL_003B mvid 5342 at System.Threading.Tasks.Task.RunContinuations(Object continuationObject) in RunContinuations.il:line IL_0065 mvid 5342 or RunContinuations.il:line IL_0090 mvid 5342 at System.Threading.Tasks.Task1.TrySetResult(TResult result) in TrySetResult.il:line IL_004B mvid 5342
at System.Threading.Tasks.Task.TwoTaskWhenAnyPromise1.Invoke(Task completingTask) in Invoke.il:line IL_0088 mvid 5342 at System.Threading.Tasks.Task.RunContinuations(Object continuationObject) in RunContinuations.il:line IL_0065 mvid 5342 or RunContinuations.il:line IL_0090 mvid 5342 at System.Threading.Tasks.Task.FinishSlow(Boolean userDelegateExecute) in FinishSlow.il:line IL_0003 mvid 5342 at System.Threading.Tasks.Task.TrySetException(Object exceptionObject) in TrySetException.il:line IL_0022 mvid 5342 at System.Runtime.CompilerServices.AsyncTaskMethodBuilder1.SetException(Exception exception, Task1& taskField) in SetException.il:line IL_0025 mvid 5342 at JetBrains.JsonRpc.JsonRpc.InvokeAsync[TResult](String method, IReadOnlyList1 args, CancellationToken ct) in InvokeAsync.il:line IL_0268 mvid 4CB9
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) in RunInternal.il:line IL_0040 mvid 5342
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder1.AsyncStateMachineBox1.MoveNext(Thread threadPoolThread) in MoveNext.il:line IL_0000 mvid 5342 or MoveNext.il:line IL_003A mvid 5342
at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(IAsyncStateMachineBox box, Boolean allowInlining) in RunOrScheduleAction.il:line IL_003B mvid 5342
at System.Threading.Tasks.Task.RunContinuations(Object continuationObject) in RunContinuations.il:line IL_0065 mvid 5342 or RunContinuations.il:line IL_0090 mvid 5342
at System.Threading.Tasks.Task.FinishSlow(Boolean userDelegateExecute) in FinishSlow.il:line IL_0003 mvid 5342
at System.Threading.Tasks.Task.TrySetException(Object exceptionObject) in TrySetException.il:line IL_0022 mvid 5342
at JetBrains.JsonRpc.JsonRpc.HandleResponseAsync(JsonRpcResponse response) in HandleResponseAsync.il:line IL_0000 mvid 4CB9
at JetBrains.JsonRpc.JsonRpc.HandleMessage(JsonRpcMessage message) in HandleMessage.il:line IL_003B mvid 4CB9
at JetBrains.JsonRpc.JsonRpc.HandleMessagesAsync() in HandleMessagesAsync.il:line IL_00D1 mvid 4CB9
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) in RunInternal.il:line IL_0040 mvid 5342
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder1.AsyncStateMachineBox1.MoveNext(Thread threadPoolThread) in MoveNext.il:line IL_0000 mvid 5342 or MoveNext.il:line IL_003A mvid 5342
at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(IAsyncStateMachineBox box, Boolean allowInlining) in RunOrScheduleAction.il:line IL_003B mvid 5342
at System.Threading.Tasks.Task.RunContinuations(Object continuationObject) in RunContinuations.il:line IL_0065 mvid 5342 or RunContinuations.il:line IL_0090 mvid 5342
at JetBrains.JsonRpc.HeaderDelimitedMessageTransport.ReadAsync(CancellationToken ct) in ReadAsync.il:line IL_0191 mvid 4CB9
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) in RunInternal.il:line IL_0040 mvid 5342
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder1.AsyncStateMachineBox1.MoveNext(Thread threadPoolThread) in MoveNext.il:line IL_0000 mvid 5342 or MoveNext.il:line IL_003A mvid 5342
at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(IAsyncStateMachineBox box, Boolean allowInlining) in RunOrScheduleAction.il:line IL_003B mvid 5342
at System.Threading.Tasks.Task.RunContinuations(Object continuationObject) in RunContinuations.il:line IL_0065 mvid 5342 or RunContinuations.il:line IL_0090 mvid 5342
at System.IO.TextReader.ReadBlockAsyncInternal(Memory1 buffer, CancellationToken cancellationToken) in ReadBlockAsyncInternal.il:line IL_00EE mvid 5342 at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) in RunInternal.il:line IL_0040 mvid 5342 at System.Runtime.CompilerServices.AsyncTaskMethodBuilder1.AsyncStateMachineBox1.MoveNext(Thread threadPoolThread) in MoveNext.il:line IL_0000 mvid 5342 or MoveNext.il:line IL_003A mvid 5342 at System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(IAsyncStateMachineBox box, Boolean allowInlining) in RunOrScheduleAction.il:line IL_003B mvid 5342 at System.Threading.Tasks.Task.RunContinuations(Object continuationObject) in RunContinuations.il:line IL_0065 mvid 5342 or RunContinuations.il:line IL_0090 mvid 5342 at System.Threading.Tasks.Task1.TrySetResult(TResult result) in TrySetResult.il:line IL_004B mvid 5342
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder1.SetExistingTaskResult(Task1 task, TResult result) in SetExistingTaskResult.il:line IL_001D mvid 5342
at System.IO.StreamReader.ReadAsyncInternal(Memory1 buffer, CancellationToken cancellationToken) in ReadAsyncInternal.il:line IL_0520 mvid 5342 at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) in RunInternal.il:line IL_0040 mvid 5342 at System.Runtime.CompilerServices.AsyncTaskMethodBuilder1.AsyncStateMachineBox1.MoveNext(Thread threadPoolThread) in MoveNext.il:line IL_0000 mvid 5342 or MoveNext.il:line IL_003A mvid 5342 at System.Net.Sockets.SocketAsyncEventArgs.<>c.<.cctor>b__174_0(UInt32 errorCode, UInt32 numBytes, NativeOverlapped* nativeOverlapped) in SocketAsyncEventArgs.il:line IL_0046 mvid 9433 at System.Threading.PortableThreadPool.IOCompletionPoller.Callback.Invoke(Event e) in Invoke.il:line IL_003A mvid 5342 at System.Threading.ThreadPoolTypedWorkItemQueue2.System.Threading.IThreadPoolWorkItem.Execute()
at System.Threading.ThreadPoolWorkQueue.Dispatch() in Dispatch.il:line IL_019C mvid 5342
at System.Threading.PortableThreadPool.WorkerThread.WorkerThreadStart() in WorkerThreadStart.il:line IL_00A0 mvid 5342
”
ExceptionPath = Root
ClassName = JetBrains.Util.LoggerException
HResult = COR_E_APPLICATION=80131600
`
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thomhurst
Mar 27, 2026
Maintainer

It's hard to see exceptions in Rider and VS if they happen outside a test - Because they only really render errors in a test ouput window, which is obviously scoped to that test.

That being said, we shouldn't be causing an Rpc exception either - I think the exception is bubbling all the way up, when instead it should be caught and we should "Complete" the MTP test session with "IsSuccess = false"
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@osa0805
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osa0805 Mar 27, 2026
Author

Is it possible to fix it on your end ?
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