microsoft · Seth Juarez (sethjuarez) · Aug 5, 2026 · Aug 5, 2026 · Aug 5, 2026
diff --git a/runtime/csharp/Prompty.Core.Tests/Model/agent/GuardrailResultConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/agent/GuardrailResultConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/agent/PromptyConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/agent/PromptyConversionTests.cs
diff --git a/runtime/csharp/Prompty.Core.Tests/Model/connection/AnonymousConnectionConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/connection/AnonymousConnectionConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/connection/ApiKeyConnectionConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/connection/ApiKeyConnectionConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/connection/AuthorizationCodeFlowConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/connection/AuthorizationCodeFlowConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/connection/ConnectionConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/connection/ConnectionConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/connection/DeviceAuthorizationConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/connection/DeviceAuthorizationConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/connection/FoundryConnectionConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/connection/FoundryConnectionConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/connection/OAuthConnectionConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/connection/OAuthConnectionConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/connection/OAuthTokenConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/connection/OAuthTokenConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/connection/ReferenceConnectionConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/connection/ReferenceConnectionConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/connection/RemoteConnectionConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/connection/RemoteConnectionConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/conversation/AudioPartConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/conversation/AudioPartConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/conversation/ContentPartConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/conversation/ContentPartConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/conversation/FilePartConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/conversation/FilePartConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/conversation/ImagePartConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/conversation/ImagePartConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/conversation/MessageConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/conversation/MessageConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/conversation/TextPartConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/conversation/TextPartConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/conversation/ThreadMarkerConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/conversation/ThreadMarkerConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/conversation/ToolCallConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/conversation/ToolCallConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130
@@ -23,7 +25,7 @@ public void LoadYamlInput()
         Assert.NotNull(instance);
         Assert.Equal("call_abc123", instance.Id);
         Assert.Equal("get_weather", instance.Name);
-        Assert.Equal(@"{""city"": ""Paris""}".Replace("\r\n", "\n"), instance.Arguments);
+        Assert.Equal("{\"city\": \"Paris\"}", instance.Arguments);
     }
 
     [Fact]
@@ -41,7 +43,7 @@ public void LoadJsonInput()
         Assert.NotNull(instance);
         Assert.Equal("call_abc123", instance.Id);
         Assert.Equal("get_weather", instance.Name);
-        Assert.Equal(@"{""city"": ""Paris""}".Replace("\r\n", "\n"), instance.Arguments);
+        Assert.Equal("{\"city\": \"Paris\"}", instance.Arguments);
     }
 
     [Fact]
@@ -66,7 +68,7 @@ public void RoundtripJson()
         Assert.NotNull(reloaded);
         Assert.Equal("call_abc123", reloaded.Id);
         Assert.Equal("get_weather", reloaded.Name);
-        Assert.Equal(@"{""city"": ""Paris""}".Replace("\r\n", "\n"), reloaded.Arguments);
+        Assert.Equal("{\"city\": \"Paris\"}", reloaded.Arguments);
     }
 
     [Fact]
@@ -90,7 +92,7 @@ public void RoundtripYaml()
         Assert.NotNull(reloaded);
         Assert.Equal("call_abc123", reloaded.Id);
         Assert.Equal("get_weather", reloaded.Name);
-        Assert.Equal(@"{""city"": ""Paris""}".Replace("\r\n", "\n"), reloaded.Arguments);
+        Assert.Equal("{\"city\": \"Paris\"}", reloaded.Arguments);
     }
 
     [Fact]

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/conversation/ToolResultConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/conversation/ToolResultConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/core/ArrayPropertyConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/core/ArrayPropertyConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/core/FileNotFoundErrorConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/core/FileNotFoundErrorConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/core/InvokerErrorConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/core/InvokerErrorConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/core/ObjectPropertyConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/core/ObjectPropertyConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/core/PropertyConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/core/PropertyConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/core/UnionPropertyConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/core/UnionPropertyConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/core/ValidationErrorConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/core/ValidationErrorConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/core/ValidationResultConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/core/ValidationResultConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/events/CheckpointConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/events/CheckpointConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/events/CompactionCompletePayloadConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/events/CompactionCompletePayloadConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/events/CompactionFailedPayloadConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/events/CompactionFailedPayloadConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/events/CompactionStartPayloadConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/events/CompactionStartPayloadConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/events/DoneEventPayloadConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/events/DoneEventPayloadConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/events/ErrorChunkConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/events/ErrorChunkConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/events/ErrorEventPayloadConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/events/ErrorEventPayloadConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/events/HarnessContextConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/events/HarnessContextConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/events/HookEndPayloadConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/events/HookEndPayloadConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/events/HookStartPayloadConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/events/HookStartPayloadConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/events/HostToolRequestConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/events/HostToolRequestConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/events/HostToolResultConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/events/HostToolResultConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/events/LlmCompletePayloadConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/events/LlmCompletePayloadConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/events/LlmStartPayloadConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/events/LlmStartPayloadConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/events/MessagesUpdatedPayloadConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/events/MessagesUpdatedPayloadConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/events/PermissionCompletedPayloadConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/events/PermissionCompletedPayloadConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/events/PermissionDecisionConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/events/PermissionDecisionConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/events/PermissionRequestConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/events/PermissionRequestConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/events/PermissionRequestedPayloadConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/events/PermissionRequestedPayloadConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/events/RedactedFieldConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/events/RedactedFieldConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/events/RedactionMetadataConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/events/RedactionMetadataConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/events/RetryPayloadConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/events/RetryPayloadConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/events/SessionEndPayloadConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/events/SessionEndPayloadConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130

diff --git a/runtime/csharp/Prompty.Core.Tests/Model/events/SessionEventConversionTests.cs b/runtime/csharp/Prompty.Core.Tests/Model/events/SessionEventConversionTests.cs
@@ -1,4 +1,6 @@
 // <auto-generated by typra-emitter>
+#nullable enable
+
 using Xunit;
 
 #pragma warning disable IDE0130