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Test Discovery (JsonRpc) with IDEs fails on .NET Framework with invalid UTF-16 display name #7157

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Test Discovery (JsonRpc) with IDEs fails on .NET Framework with invalid UTF-16 display name#7157
@thomhurst

Description

@thomhurst
thomhurst
opened on Dec 23, 2025

Repro:

using Microsoft.Testing.Platform.Builder;
using Microsoft.Testing.Platform.Capabilities.TestFramework;
using Microsoft.Testing.Platform.Extensions.Messages;
using Microsoft.Testing.Platform.Extensions.TestFramework;
using Microsoft.Testing.Platform.Requests;

namespace TestPlatformRepro;

public static class TestingPlatformBuilderHook
{
    public static void AddExtensions(
        ITestApplicationBuilder testApplicationBuilder,
        string[] _) =>
        testApplicationBuilder.RegisterTestFramework(_ => new TestFrameworkCapabilities(), (_, _) => new DummyAdapter());
}

internal class DummyAdapter : ITestFramework, IDataProducer
{    
    public string Uid => nameof(DummyAdapter);

    public string Version => string.Empty;

    public string DisplayName => string.Empty;

    public string Description => string.Empty;

    public Type[] DataTypesProduced => [typeof(TestNodeUpdateMessage)];

    public Task<CloseTestSessionResult> CloseTestSessionAsync(CloseTestSessionContext context)
    {
        return Task.FromResult(new CloseTestSessionResult
        {
            IsSuccess = true
        });
    }

    public Task<CreateTestSessionResult> CreateTestSessionAsync(CreateTestSessionContext context)
    {
        return Task.FromResult(new CreateTestSessionResult
        {
            IsSuccess = true
        });
    }

    public async Task ExecuteRequestAsync(ExecuteRequestContext context)
    {
        var testNodeUid = Guid.NewGuid().ToString();
        
        var displayName = "Hello\uD800";

        await context.MessageBus.PublishAsync(this, new TestNodeUpdateMessage(context.Request.Session.SessionUid, new TestNode()
        {
            DisplayName = displayName,
            Uid = testNodeUid,
            Properties = new PropertyBag(DiscoveredTestNodeStateProperty.CachedInstance)
        }));
        
        if(context.Request is RunTestExecutionRequest)
        {
            await context.MessageBus.PublishAsync(this, new TestNodeUpdateMessage(context.Request.Session.SessionUid, new TestNode()
            {
                DisplayName = displayName,
                Uid = testNodeUid,
                Properties = new PropertyBag(PassedTestNodeStateProperty.CachedInstance)
            }));
        }

        context.Complete();
    }
    
    public Task<bool> IsEnabledAsync() => Task.FromResult(true);
}

Multi-target net472, net48, net8.0, net9.0, net10.0

You'll see tests discovered for net 8/9/10.

But 4.7.2 and 4.8 will not show anything.

However change the display name to just "Hello" and all frameworks will be discovered.

Exception:

JsonRpc Error: 10 : 
Exception thrown from request "(not specified)" for method testing/testUpdates/tests: System.Text.Json.JsonException: The JSON value could not be converted to System.String. Path: $.changes[0].node.display-name | LineNumber: 0 | BytePositionInLine: 146.
 ---> System.InvalidOperationException: Cannot read incomplete UTF-16 JSON text as string with missing low surrogate.
   at System.Text.Json.ThrowHelper.ThrowInvalidOperationException_ReadIncompleteUTF16()
   at System.Text.Json.JsonReaderHelper.TryUnescape(ReadOnlySpan`1 source, Span`1 destination, Int32 idx, Int32& written)
   at System.Text.Json.JsonReaderHelper.GetUnescapedString(ReadOnlySpan`1 utf8Source)
   at System.Text.Json.Utf8JsonReader.GetString()
   at System.Text.Json.Serialization.Metadata.JsonPropertyInfo`1.ReadJsonAndSetMember(Object obj, ReadStack& state, Utf8JsonReader& reader)
   at System.Text.Json.Serialization.Converters.ObjectDefaultConverter`1.OnTryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value)
   at System.Text.Json.Serialization.JsonConverter`1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value, Boolean& isPopulatedValue)
   at System.Text.Json.Serialization.Converters.SmallObjectWithParameterizedConstructorConverter`5.TryRead[TArg](ReadStack& state, Utf8JsonReader& reader, JsonParameterInfo jsonParameterInfo, TArg& arg)
   at System.Text.Json.Serialization.Converters.SmallObjectWithParameterizedConstructorConverter`5.ReadAndCacheConstructorArgument(ReadStack& state, Utf8JsonReader& reader, JsonParameterInfo jsonParameterInfo)
   at System.Text.Json.Serialization.Converters.ObjectWithParameterizedConstructorConverter`1.OnTryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value)
   at System.Text.Json.Serialization.JsonConverter`1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value, Boolean& isPopulatedValue)
   at System.Text.Json.Serialization.JsonCollectionConverter`2.OnTryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, TCollection& value)
   at System.Text.Json.Serialization.JsonConverter`1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value, Boolean& isPopulatedValue)
   at System.Text.Json.Serialization.Metadata.JsonPropertyInfo`1.ReadJsonAndSetMember(Object obj, ReadStack& state, Utf8JsonReader& reader)
   at System.Text.Json.Serialization.Converters.ObjectDefaultConverter`1.OnTryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value)
   at System.Text.Json.Serialization.JsonConverter`1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value, Boolean& isPopulatedValue)
   at System.Text.Json.Serialization.JsonConverter`1.ReadCore(Utf8JsonReader& reader, T& value, JsonSerializerOptions options, ReadStack& state)
   --- End of inner exception stack trace ---
   at System.Text.Json.ThrowHelper.ReThrowWithPath(ReadStack& state, Utf8JsonReader& reader, Exception ex)
   at System.Text.Json.Serialization.JsonConverter`1.ReadCore(Utf8JsonReader& reader, T& value, JsonSerializerOptions options, ReadStack& state)
   at System.Text.Json.Serialization.Metadata.JsonTypeInfo`1.Deserialize(Utf8JsonReader& reader, ReadStack& state)
   at System.Text.Json.Serialization.Metadata.JsonTypeInfo`1.DeserializeAsObject(Utf8JsonReader& reader, ReadStack& state)
   at System.Text.Json.JsonSerializer.ReadFromSpanAsObject(ReadOnlySpan`1 utf8Json, JsonTypeInfo jsonTypeInfo, Nullable`1 actualByteCount)
   at System.Text.Json.JsonSerializer.Deserialize(JsonElement element, Type returnType, JsonSerializerOptions options)
   at StreamJsonRpc.SystemTextJsonFormatter.JsonRpcRequest.TryGetTypedArguments(ReadOnlySpan`1 parameters, Span`1 typedArguments)
   at StreamJsonRpc.TargetMethod.TryGetArguments(JsonRpcRequest request, MethodSignature method, Span`1 arguments)
   at StreamJsonRpc.TargetMethod..ctor(JsonRpcRequest request, List`1 candidateMethodTargets, SynchronizationContext fallbackSynchronizationContext)
   at StreamJsonRpc.Reflection.RpcTargetInfo.TryGetTargetMethod(JsonRpcRequest request, TargetMethod& targetMethod)
   at StreamJsonRpc.JsonRpc.DispatchIncomingRequestAsync(JsonRpcRequest request)
JsonRpc Error: 10 : 
System.Text.Json.JsonException: The JSON value could not be converted to System.String. Path: $.changes[0].node.display-name | LineNumber: 0 | BytePositionInLine: 146.
 ---> System.InvalidOperationException: Cannot read incomplete UTF-16 JSON text as string with missing low surrogate.
   at System.Text.Json.ThrowHelper.ThrowInvalidOperationException_ReadIncompleteUTF16()
   at System.Text.Json.JsonReaderHelper.TryUnescape(ReadOnlySpan`1 source, Span`1 destination, Int32 idx, Int32& written)
   at System.Text.Json.JsonReaderHelper.GetUnescapedString(ReadOnlySpan`1 utf8Source)
   at System.Text.Json.Utf8JsonReader.GetString()
   at System.Text.Json.Serialization.Metadata.JsonPropertyInfo`1.ReadJsonAndSetMember(Object obj, ReadStack& state, Utf8JsonReader& reader)
   at System.Text.Json.Serialization.Converters.ObjectDefaultConverter`1.OnTryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value)
   at System.Text.Json.Serialization.JsonConverter`1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value, Boolean& isPopulatedValue)
   at System.Text.Json.Serialization.Converters.SmallObjectWithParameterizedConstructorConverter`5.TryRead[TArg](ReadStack& state, Utf8JsonReader& reader, JsonParameterInfo jsonParameterInfo, TArg& arg)
   at System.Text.Json.Serialization.Converters.SmallObjectWithParameterizedConstructorConverter`5.ReadAndCacheConstructorArgument(ReadStack& state, Utf8JsonReader& reader, JsonParameterInfo jsonParameterInfo)
   at System.Text.Json.Serialization.Converters.ObjectWithParameterizedConstructorConverter`1.OnTryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value)
   at System.Text.Json.Serialization.JsonConverter`1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value, Boolean& isPopulatedValue)
   at System.Text.Json.Serialization.JsonCollectionConverter`2.OnTryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, TCollection& value)
   at System.Text.Json.Serialization.JsonConverter`1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value, Boolean& isPopulatedValue)
   at System.Text.Json.Serialization.Metadata.JsonPropertyInfo`1.ReadJsonAndSetMember(Object obj, ReadStack& state, Utf8JsonReader& reader)
   at System.Text.Json.Serialization.Converters.ObjectDefaultConverter`1.OnTryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value)
   at System.Text.Json.Serialization.JsonConverter`1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value, Boolean& isPopulatedValue)
   at System.Text.Json.Serialization.JsonConverter`1.ReadCore(Utf8JsonReader& reader, T& value, JsonSerializerOptions options, ReadStack& state)
   --- End of inner exception stack trace ---
   at System.Text.Json.ThrowHelper.ReThrowWithPath(ReadStack& state, Utf8JsonReader& reader, Exception ex)
   at System.Text.Json.Serialization.JsonConverter`1.ReadCore(Utf8JsonReader& reader, T& value, JsonSerializerOptions options, ReadStack& state)
   at System.Text.Json.Serialization.Metadata.JsonTypeInfo`1.Deserialize(Utf8JsonReader& reader, ReadStack& state)
   at System.Text.Json.Serialization.Metadata.JsonTypeInfo`1.DeserializeAsObject(Utf8JsonReader& reader, ReadStack& state)
   at System.Text.Json.JsonSerializer.ReadFromSpanAsObject(ReadOnlySpan`1 utf8Json, JsonTypeInfo jsonTypeInfo, Nullable`1 actualByteCount)
   at System.Text.Json.JsonSerializer.Deserialize(JsonElement element, Type returnType, JsonSerializerOptions options)
   at StreamJsonRpc.SystemTextJsonFormatter.JsonRpcRequest.TryGetTypedArguments(ReadOnlySpan`1 parameters, Span`1 typedArguments)
   at StreamJsonRpc.TargetMethod.TryGetArguments(JsonRpcRequest request, MethodSignature method, Span`1 arguments)
   at StreamJsonRpc.TargetMethod..ctor(JsonRpcRequest request, List`1 candidateMethodTargets, SynchronizationContext fallbackSynchronizationContext)
   at StreamJsonRpc.Reflection.RpcTargetInfo.TryGetTargetMethod(JsonRpcRequest request, TargetMethod& targetMethod)
   at StreamJsonRpc.JsonRpc.DispatchIncomingRequestAsync(JsonRpcRequest request), testing/testUpdates/tests, (not specified), 
JsonRpc Error: 10 : 
Exception thrown from request "(not specified)" for method testing/testUpdates/tests: System.Text.Json.JsonException: The JSON value could not be converted to System.String. Path: $.changes[0].node.display-name | LineNumber: 0 | BytePositionInLine: 146.
 ---> System.InvalidOperationException: Cannot read incomplete UTF-16 JSON text as string with missing low surrogate.
   at System.Text.Json.ThrowHelper.ThrowInvalidOperationException_ReadIncompleteUTF16()
   at System.Text.Json.JsonReaderHelper.TryUnescape(ReadOnlySpan`1 source, Span`1 destination, Int32 idx, Int32& written)
   at System.Text.Json.JsonReaderHelper.GetUnescapedString(ReadOnlySpan`1 utf8Source)
   at System.Text.Json.Utf8JsonReader.GetString()
   at System.Text.Json.Serialization.Metadata.JsonPropertyInfo`1.ReadJsonAndSetMember(Object obj, ReadStack& state, Utf8JsonReader& reader)
   at System.Text.Json.Serialization.Converters.ObjectDefaultConverter`1.OnTryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value)
   at System.Text.Json.Serialization.JsonConverter`1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value, Boolean& isPopulatedValue)
   at System.Text.Json.Serialization.Converters.SmallObjectWithParameterizedConstructorConverter`5.TryRead[TArg](ReadStack& state, Utf8JsonReader& reader, JsonParameterInfo jsonParameterInfo, TArg& arg)
   at System.Text.Json.Serialization.Converters.SmallObjectWithParameterizedConstructorConverter`5.ReadAndCacheConstructorArgument(ReadStack& state, Utf8JsonReader& reader, JsonParameterInfo jsonParameterInfo)
   at System.Text.Json.Serialization.Converters.ObjectWithParameterizedConstructorConverter`1.OnTryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value)
   at System.Text.Json.Serialization.JsonConverter`1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value, Boolean& isPopulatedValue)
   at System.Text.Json.Serialization.JsonCollectionConverter`2.OnTryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, TCollection& value)
   at System.Text.Json.Serialization.JsonConverter`1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value, Boolean& isPopulatedValue)
   at System.Text.Json.Serialization.Metadata.JsonPropertyInfo`1.ReadJsonAndSetMember(Object obj, ReadStack& state, Utf8JsonReader& reader)
   at System.Text.Json.Serialization.Converters.ObjectDefaultConverter`1.OnTryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value)
   at System.Text.Json.Serialization.JsonConverter`1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value, Boolean& isPopulatedValue)
   at System.Text.Json.Serialization.JsonConverter`1.ReadCore(Utf8JsonReader& reader, T& value, JsonSerializerOptions options, ReadStack& state)
   --- End of inner exception stack trace ---
   at System.Text.Json.ThrowHelper.ReThrowWithPath(ReadStack& state, Utf8JsonReader& reader, Exception ex)
   at System.Text.Json.Serialization.JsonConverter`1.ReadCore(Utf8JsonReader& reader, T& value, JsonSerializerOptions options, ReadStack& state)
   at System.Text.Json.Serialization.Metadata.JsonTypeInfo`1.Deserialize(Utf8JsonReader& reader, ReadStack& state)
   at System.Text.Json.Serialization.Metadata.JsonTypeInfo`1.DeserializeAsObject(Utf8JsonReader& reader, ReadStack& state)
   at System.Text.Json.JsonSerializer.ReadFromSpanAsObject(ReadOnlySpan`1 utf8Json, JsonTypeInfo jsonTypeInfo, Nullable`1 actualByteCount)
   at System.Text.Json.JsonSerializer.Deserialize(JsonElement element, Type returnType, JsonSerializerOptions options)
   at StreamJsonRpc.SystemTextJsonFormatter.JsonRpcRequest.TryGetTypedArguments(ReadOnlySpan`1 parameters, Span`1 typedArguments)
   at StreamJsonRpc.TargetMethod.TryGetArguments(JsonRpcRequest request, MethodSignature method, Span`1 arguments)
   at StreamJsonRpc.TargetMethod..ctor(JsonRpcRequest request, List`1 candidateMethodTargets, SynchronizationContext fallbackSynchronizationContext)
   at StreamJsonRpc.Reflection.RpcTargetInfo.TryGetTargetMethod(JsonRpcRequest request, TargetMethod& targetMethod)
   at StreamJsonRpc.JsonRpc.DispatchIncomingRequestAsync(JsonRpcRequest request)
JsonRpc Error: 10 : 
System.Text.Json.JsonException: The JSON value could not be converted to System.String. Path: $.changes[0].node.display-name | LineNumber: 0 | BytePositionInLine: 146.
 ---> System.InvalidOperationException: Cannot read incomplete UTF-16 JSON text as string with missing low surrogate.
   at System.Text.Json.ThrowHelper.ThrowInvalidOperationException_ReadIncompleteUTF16()
   at System.Text.Json.JsonReaderHelper.TryUnescape(ReadOnlySpan`1 source, Span`1 destination, Int32 idx, Int32& written)
   at System.Text.Json.JsonReaderHelper.GetUnescapedString(ReadOnlySpan`1 utf8Source)
   at System.Text.Json.Utf8JsonReader.GetString()
   at System.Text.Json.Serialization.Metadata.JsonPropertyInfo`1.ReadJsonAndSetMember(Object obj, ReadStack& state, Utf8JsonReader& reader)
   at System.Text.Json.Serialization.Converters.ObjectDefaultConverter`1.OnTryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value)
   at System.Text.Json.Serialization.JsonConverter`1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value, Boolean& isPopulatedValue)
   at System.Text.Json.Serialization.Converters.SmallObjectWithParameterizedConstructorConverter`5.TryRead[TArg](ReadStack& state, Utf8JsonReader& reader, JsonParameterInfo jsonParameterInfo, TArg& arg)
   at System.Text.Json.Serialization.Converters.SmallObjectWithParameterizedConstructorConverter`5.ReadAndCacheConstructorArgument(ReadStack& state, Utf8JsonReader& reader, JsonParameterInfo jsonParameterInfo)
   at System.Text.Json.Serialization.Converters.ObjectWithParameterizedConstructorConverter`1.OnTryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value)
   at System.Text.Json.Serialization.JsonConverter`1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value, Boolean& isPopulatedValue)
   at System.Text.Json.Serialization.JsonCollectionConverter`2.OnTryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, TCollection& value)
   at System.Text.Json.Serialization.JsonConverter`1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value, Boolean& isPopulatedValue)
   at System.Text.Json.Serialization.Metadata.JsonPropertyInfo`1.ReadJsonAndSetMember(Object obj, ReadStack& state, Utf8JsonReader& reader)
   at System.Text.Json.Serialization.Converters.ObjectDefaultConverter`1.OnTryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value)
   at System.Text.Json.Serialization.JsonConverter`1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value, Boolean& isPopulatedValue)
   at System.Text.Json.Serialization.JsonConverter`1.ReadCore(Utf8JsonReader& reader, T& value, JsonSerializerOptions options, ReadStack& state)
   --- End of inner exception stack trace ---
   at System.Text.Json.ThrowHelper.ReThrowWithPath(ReadStack& state, Utf8JsonReader& reader, Exception ex)
   at System.Text.Json.Serialization.JsonConverter`1.ReadCore(Utf8JsonReader& reader, T& value, JsonSerializerOptions options, ReadStack& state)
   at System.Text.Json.Serialization.Metadata.JsonTypeInfo`1.Deserialize(Utf8JsonReader& reader, ReadStack& state)
   at System.Text.Json.Serialization.Metadata.JsonTypeInfo`1.DeserializeAsObject(Utf8JsonReader& reader, ReadStack& state)
   at System.Text.Json.JsonSerializer.ReadFromSpanAsObject(ReadOnlySpan`1 utf8Json, JsonTypeInfo jsonTypeInfo, Nullable`1 actualByteCount)
   at System.Text.Json.JsonSerializer.Deserialize(JsonElement element, Type returnType, JsonSerializerOptions options)
   at StreamJsonRpc.SystemTextJsonFormatter.JsonRpcRequest.TryGetTypedArguments(ReadOnlySpan`1 parameters, Span`1 typedArguments)
   at StreamJsonRpc.TargetMethod.TryGetArguments(JsonRpcRequest request, MethodSignature method, Span`1 arguments)
   at StreamJsonRpc.TargetMethod..ctor(JsonRpcRequest request, List`1 candidateMethodTargets, SynchronizationContext fallbackSynchronizationContext)
   at StreamJsonRpc.Reflection.RpcTargetInfo.TryGetTargetMethod(JsonRpcRequest request, TargetMethod& targetMethod)
   at StreamJsonRpc.JsonRpc.DispatchIncomingRequestAsync(JsonRpcRequest request), testing/testUpdates/tests, (not specified), 
========== Test discovery finished: 2 Tests found in 648.9 ms ==========
========== Starting test discovery ==========
Connecting to client host '127.0.0.1' port '56072'
Connecting to client host '127.0.0.1' port '56071'
Connecting to client host '127.0.0.1' port '56073'
Connecting to client host '127.0.0.1' port '56070'
========== Test discovery finished: 4 Tests found in 699.3 ms ==========
========== Starting test discovery ==========
Connecting to client host '127.0.0.1' port '53031'
Connecting to client host '127.0.0.1' port '53030'
Connecting to client host '127.0.0.1' port '53029'
JsonRpc Error: 10 : 
Exception thrown from request "(not specified)" for method testing/testUpdates/tests: System.Text.Json.JsonException: The JSON value could not be converted to System.String. Path: $.changes[0].node.display-name | LineNumber: 0 | BytePositionInLine: 146.
 ---> System.InvalidOperationException: Cannot read incomplete UTF-16 JSON text as string with missing low surrogate.
   at System.Text.Json.ThrowHelper.ThrowInvalidOperationException_ReadIncompleteUTF16()
   at System.Text.Json.JsonReaderHelper.TryUnescape(ReadOnlySpan`1 source, Span`1 destination, Int32 idx, Int32& written)
   at System.Text.Json.JsonReaderHelper.GetUnescapedString(ReadOnlySpan`1 utf8Source)
   at System.Text.Json.Utf8JsonReader.GetString()
   at System.Text.Json.Serialization.Metadata.JsonPropertyInfo`1.ReadJsonAndSetMember(Object obj, ReadStack& state, Utf8JsonReader& reader)
   at System.Text.Json.Serialization.Converters.ObjectDefaultConverter`1.OnTryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value)
   at System.Text.Json.Serialization.JsonConverter`1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value, Boolean& isPopulatedValue)
   at System.Text.Json.Serialization.Converters.SmallObjectWithParameterizedConstructorConverter`5.TryRead[TArg](ReadStack& state, Utf8JsonReader& reader, JsonParameterInfo jsonParameterInfo, TArg& arg)
   at System.Text.Json.Serialization.Converters.SmallObjectWithParameterizedConstructorConverter`5.ReadAndCacheConstructorArgument(ReadStack& state, Utf8JsonReader& reader, JsonParameterInfo jsonParameterInfo)
   at System.Text.Json.Serialization.Converters.ObjectWithParameterizedConstructorConverter`1.OnTryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value)
   at System.Text.Json.Serialization.JsonConverter`1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value, Boolean& isPopulatedValue)
   at System.Text.Json.Serialization.JsonCollectionConverter`2.OnTryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, TCollection& value)
   at System.Text.Json.Serialization.JsonConverter`1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value, Boolean& isPopulatedValue)
   at System.Text.Json.Serialization.Metadata.JsonPropertyInfo`1.ReadJsonAndSetMember(Object obj, ReadStack& state, Utf8JsonReader& reader)
   at System.Text.Json.Serialization.Converters.ObjectDefaultConverter`1.OnTryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value)
   at System.Text.Json.Serialization.JsonConverter`1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value, Boolean& isPopulatedValue)
   at System.Text.Json.Serialization.JsonConverter`1.ReadCore(Utf8JsonReader& reader, T& value, JsonSerializerOptions options, ReadStack& state)
   --- End of inner exception stack trace ---
   at System.Text.Json.ThrowHelper.ReThrowWithPath(ReadStack& state, Utf8JsonReader& reader, Exception ex)
   at System.Text.Json.Serialization.JsonConverter`1.ReadCore(Utf8JsonReader& reader, T& value, JsonSerializerOptions options, ReadStack& state)
   at System.Text.Json.Serialization.Metadata.JsonTypeInfo`1.Deserialize(Utf8JsonReader& reader, ReadStack& state)
   at System.Text.Json.Serialization.Metadata.JsonTypeInfo`1.DeserializeAsObject(Utf8JsonReader& reader, ReadStack& state)
   at System.Text.Json.JsonSerializer.ReadFromSpanAsObject(ReadOnlySpan`1 utf8Json, JsonTypeInfo jsonTypeInfo, Nullable`1 actualByteCount)
   at System.Text.Json.JsonSerializer.Deserialize(JsonElement element, Type returnType, JsonSerializerOptions options)
   at StreamJsonRpc.SystemTextJsonFormatter.JsonRpcRequest.TryGetTypedArguments(ReadOnlySpan`1 parameters, Span`1 typedArguments)
   at StreamJsonRpc.TargetMethod.TryGetArguments(JsonRpcRequest request, MethodSignature method, Span`1 arguments)
   at StreamJsonRpc.TargetMethod..ctor(JsonRpcRequest request, List`1 candidateMethodTargets, SynchronizationContext fallbackSynchronizationContext)
   at StreamJsonRpc.Reflection.RpcTargetInfo.TryGetTargetMethod(JsonRpcRequest request, TargetMethod& targetMethod)
   at StreamJsonRpc.JsonRpc.DispatchIncomingRequestAsync(JsonRpcRequest request)
JsonRpc Error: 10 : 
System.Text.Json.JsonException: The JSON value could not be converted to System.String. Path: $.changes[0].node.display-name | LineNumber: 0 | BytePositionInLine: 146.
 ---> System.InvalidOperationException: Cannot read incomplete UTF-16 JSON text as string with missing low surrogate.
   at System.Text.Json.ThrowHelper.ThrowInvalidOperationException_ReadIncompleteUTF16()
   at System.Text.Json.JsonReaderHelper.TryUnescape(ReadOnlySpan`1 source, Span`1 destination, Int32 idx, Int32& written)
   at System.Text.Json.JsonReaderHelper.GetUnescapedString(ReadOnlySpan`1 utf8Source)
   at System.Text.Json.Utf8JsonReader.GetString()
   at System.Text.Json.Serialization.Metadata.JsonPropertyInfo`1.ReadJsonAndSetMember(Object obj, ReadStack& state, Utf8JsonReader& reader)
   at System.Text.Json.Serialization.Converters.ObjectDefaultConverter`1.OnTryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value)
   at System.Text.Json.Serialization.JsonConverter`1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value, Boolean& isPopulatedValue)
   at System.Text.Json.Serialization.Converters.SmallObjectWithParameterizedConstructorConverter`5.TryRead[TArg](ReadStack& state, Utf8JsonReader& reader, JsonParameterInfo jsonParameterInfo, TArg& arg)
   at System.Text.Json.Serialization.Converters.SmallObjectWithParameterizedConstructorConverter`5.ReadAndCacheConstructorArgument(ReadStack& state, Utf8JsonReader& reader, JsonParameterInfo jsonParameterInfo)
   at System.Text.Json.Serialization.Converters.ObjectWithParameterizedConstructorConverter`1.OnTryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value)
   at System.Text.Json.Serialization.JsonConverter`1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value, Boolean& isPopulatedValue)
   at System.Text.Json.Serialization.JsonCollectionConverter`2.OnTryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, TCollection& value)
   at System.Text.Json.Serialization.JsonConverter`1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value, Boolean& isPopulatedValue)
   at System.Text.Json.Serialization.Metadata.JsonPropertyInfo`1.ReadJsonAndSetMember(Object obj, ReadStack& state, Utf8JsonReader& reader)
   at System.Text.Json.Serialization.Converters.ObjectDefaultConverter`1.OnTryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value)
   at System.Text.Json.Serialization.JsonConverter`1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value, Boolean& isPopulatedValue)
   at System.Text.Json.Serialization.JsonConverter`1.ReadCore(Utf8JsonReader& reader, T& value, JsonSerializerOptions options, ReadStack& state)
   --- End of inner exception stack trace ---
   at System.Text.Json.ThrowHelper.ReThrowWithPath(ReadStack& state, Utf8JsonReader& reader, Exception ex)
   at System.Text.Json.Serialization.JsonConverter`1.ReadCore(Utf8JsonReader& reader, T& value, JsonSerializerOptions options, ReadStack& state)
   at System.Text.Json.Serialization.Metadata.JsonTypeInfo`1.Deserialize(Utf8JsonReader& reader, ReadStack& state)
   at System.Text.Json.Serialization.Metadata.JsonTypeInfo`1.DeserializeAsObject(Utf8JsonReader& reader, ReadStack& state)
   at System.Text.Json.JsonSerializer.ReadFromSpanAsObject(ReadOnlySpan`1 utf8Json, JsonTypeInfo jsonTypeInfo, Nullable`1 actualByteCount)
   at System.Text.Json.JsonSerializer.Deserialize(JsonElement element, Type returnType, JsonSerializerOptions options)
   at StreamJsonRpc.SystemTextJsonFormatter.JsonRpcRequest.TryGetTypedArguments(ReadOnlySpan`1 parameters, Span`1 typedArguments)
   at StreamJsonRpc.TargetMethod.TryGetArguments(JsonRpcRequest request, MethodSignature method, Span`1 arguments)
   at StreamJsonRpc.TargetMethod..ctor(JsonRpcRequest request, List`1 candidateMethodTargets, SynchronizationContext fallbackSynchronizationContext)
   at StreamJsonRpc.Reflection.RpcTargetInfo.TryGetTargetMethod(JsonRpcRequest request, TargetMethod& targetMethod)
   at StreamJsonRpc.JsonRpc.DispatchIncomingRequestAsync(JsonRpcRequest request), testing/testUpdates/tests, (not specified), 
Connecting to client host '127.0.0.1' port '53032'
JsonRpc Error: 10 : 
Exception thrown from request "(not specified)" for method testing/testUpdates/tests: System.Text.Json.JsonException: The JSON value could not be converted to System.String. Path: $.changes[0].node.display-name | LineNumber: 0 | BytePositionInLine: 146.
 ---> System.InvalidOperationException: Cannot read incomplete UTF-16 JSON text as string with missing low surrogate.
   at System.Text.Json.ThrowHelper.ThrowInvalidOperationException_ReadIncompleteUTF16()
   at System.Text.Json.JsonReaderHelper.TryUnescape(ReadOnlySpan`1 source, Span`1 destination, Int32 idx, Int32& written)
   at System.Text.Json.JsonReaderHelper.GetUnescapedString(ReadOnlySpan`1 utf8Source)
   at System.Text.Json.Utf8JsonReader.GetString()
   at System.Text.Json.Serialization.Metadata.JsonPropertyInfo`1.ReadJsonAndSetMember(Object obj, ReadStack& state, Utf8JsonReader& reader)
   at System.Text.Json.Serialization.Converters.ObjectDefaultConverter`1.OnTryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value)
   at System.Text.Json.Serialization.JsonConverter`1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value, Boolean& isPopulatedValue)
   at System.Text.Json.Serialization.Converters.SmallObjectWithParameterizedConstructorConverter`5.TryRead[TArg](ReadStack& state, Utf8JsonReader& reader, JsonParameterInfo jsonParameterInfo, TArg& arg)
   at System.Text.Json.Serialization.Converters.SmallObjectWithParameterizedConstructorConverter`5.ReadAndCacheConstructorArgument(ReadStack& state, Utf8JsonReader& reader, JsonParameterInfo jsonParameterInfo)
   at System.Text.Json.Serialization.Converters.ObjectWithParameterizedConstructorConverter`1.OnTryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value)
   at System.Text.Json.Serialization.JsonConverter`1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value, Boolean& isPopulatedValue)
   at System.Text.Json.Serialization.JsonCollectionConverter`2.OnTryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, TCollection& value)
   at System.Text.Json.Serialization.JsonConverter`1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value, Boolean& isPopulatedValue)
   at System.Text.Json.Serialization.Metadata.JsonPropertyInfo`1.ReadJsonAndSetMember(Object obj, ReadStack& state, Utf8JsonReader& reader)
   at System.Text.Json.Serialization.Converters.ObjectDefaultConverter`1.OnTryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value)
   at System.Text.Json.Serialization.JsonConverter`1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value, Boolean& isPopulatedValue)
   at System.Text.Json.Serialization.JsonConverter`1.ReadCore(Utf8JsonReader& reader, T& value, JsonSerializerOptions options, ReadStack& state)
   --- End of inner exception stack trace ---
   at System.Text.Json.ThrowHelper.ReThrowWithPath(ReadStack& state, Utf8JsonReader& reader, Exception ex)
   at System.Text.Json.Serialization.JsonConverter`1.ReadCore(Utf8JsonReader& reader, T& value, JsonSerializerOptions options, ReadStack& state)
   at System.Text.Json.Serialization.Metadata.JsonTypeInfo`1.Deserialize(Utf8JsonReader& reader, ReadStack& state)
   at System.Text.Json.Serialization.Metadata.JsonTypeInfo`1.DeserializeAsObject(Utf8JsonReader& reader, ReadStack& state)
   at System.Text.Json.JsonSerializer.ReadFromSpanAsObject(ReadOnlySpan`1 utf8Json, JsonTypeInfo jsonTypeInfo, Nullable`1 actualByteCount)
   at System.Text.Json.JsonSerializer.Deserialize(JsonElement element, Type returnType, JsonSerializerOptions options)
   at StreamJsonRpc.SystemTextJsonFormatter.JsonRpcRequest.TryGetTypedArguments(ReadOnlySpan`1 parameters, Span`1 typedArguments)
   at StreamJsonRpc.TargetMethod.TryGetArguments(JsonRpcRequest request, MethodSignature method, Span`1 arguments)
   at StreamJsonRpc.TargetMethod..ctor(JsonRpcRequest request, List`1 candidateMethodTargets, SynchronizationContext fallbackSynchronizationContext)
   at StreamJsonRpc.Reflection.RpcTargetInfo.TryGetTargetMethod(JsonRpcRequest request, TargetMethod& targetMethod)
   at StreamJsonRpc.JsonRpc.DispatchIncomingRequestAsync(JsonRpcRequest request)
JsonRpc Error: 10 : 
System.Text.Json.JsonException: The JSON value could not be converted to System.String. Path: $.changes[0].node.display-name | LineNumber: 0 | BytePositionInLine: 146.
 ---> System.InvalidOperationException: Cannot read incomplete UTF-16 JSON text as string with missing low surrogate.
   at System.Text.Json.ThrowHelper.ThrowInvalidOperationException_ReadIncompleteUTF16()
   at System.Text.Json.JsonReaderHelper.TryUnescape(ReadOnlySpan`1 source, Span`1 destination, Int32 idx, Int32& written)
   at System.Text.Json.JsonReaderHelper.GetUnescapedString(ReadOnlySpan`1 utf8Source)
   at System.Text.Json.Utf8JsonReader.GetString()
   at System.Text.Json.Serialization.Metadata.JsonPropertyInfo`1.ReadJsonAndSetMember(Object obj, ReadStack& state, Utf8JsonReader& reader)
   at System.Text.Json.Serialization.Converters.ObjectDefaultConverter`1.OnTryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value)
   at System.Text.Json.Serialization.JsonConverter`1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value, Boolean& isPopulatedValue)
   at System.Text.Json.Serialization.Converters.SmallObjectWithParameterizedConstructorConverter`5.TryRead[TArg](ReadStack& state, Utf8JsonReader& reader, JsonParameterInfo jsonParameterInfo, TArg& arg)
   at System.Text.Json.Serialization.Converters.SmallObjectWithParameterizedConstructorConverter`5.ReadAndCacheConstructorArgument(ReadStack& state, Utf8JsonReader& reader, JsonParameterInfo jsonParameterInfo)
   at System.Text.Json.Serialization.Converters.ObjectWithParameterizedConstructorConverter`1.OnTryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value)
   at System.Text.Json.Serialization.JsonConverter`1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value, Boolean& isPopulatedValue)
   at System.Text.Json.Serialization.JsonCollectionConverter`2.OnTryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, TCollection& value)
   at System.Text.Json.Serialization.JsonConverter`1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value, Boolean& isPopulatedValue)
   at System.Text.Json.Serialization.Metadata.JsonPropertyInfo`1.ReadJsonAndSetMember(Object obj, ReadStack& state, Utf8JsonReader& reader)
   at System.Text.Json.Serialization.Converters.ObjectDefaultConverter`1.OnTryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value)
   at System.Text.Json.Serialization.JsonConverter`1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value, Boolean& isPopulatedValue)
   at System.Text.Json.Serialization.JsonConverter`1.ReadCore(Utf8JsonReader& reader, T& value, JsonSerializerOptions options, ReadStack& state)
   --- End of inner exception stack trace ---
   at System.Text.Json.ThrowHelper.ReThrowWithPath(ReadStack& state, Utf8JsonReader& reader, Exception ex)
   at System.Text.Json.Serialization.JsonConverter`1.ReadCore(Utf8JsonReader& reader, T& value, JsonSerializerOptions options, ReadStack& state)
   at System.Text.Json.Serialization.Metadata.JsonTypeInfo`1.Deserialize(Utf8JsonReader& reader, ReadStack& state)
   at System.Text.Json.Serialization.Metadata.JsonTypeInfo`1.DeserializeAsObject(Utf8JsonReader& reader, ReadStack& state)
   at System.Text.Json.JsonSerializer.ReadFromSpanAsObject(ReadOnlySpan`1 utf8Json, JsonTypeInfo jsonTypeInfo, Nullable`1 actualByteCount)
   at System.Text.Json.JsonSerializer.Deserialize(JsonElement element, Type returnType, JsonSerializerOptions options)
   at StreamJsonRpc.SystemTextJsonFormatter.JsonRpcRequest.TryGetTypedArguments(ReadOnlySpan`1 parameters, Span`1 typedArguments)
   at StreamJsonRpc.TargetMethod.TryGetArguments(JsonRpcRequest request, MethodSignature method, Span`1 arguments)
   at StreamJsonRpc.TargetMethod..ctor(JsonRpcRequest request, List`1 candidateMethodTargets, SynchronizationContext fallbackSynchronizationContext)
   at StreamJsonRpc.Reflection.RpcTargetInfo.TryGetTargetMethod(JsonRpcRequest request, TargetMethod& targetMethod)
   at StreamJsonRpc.JsonRpc.DispatchIncomingRequestAsync(JsonRpcRequest request), testing/testUpdates/tests, (not specified),

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