From b7ad55ca0867ac3e66998bc40516b1978ba7c710 Mon Sep 17 00:00:00 2001
From: Alex Wichmann <alekcarlsen@gmail.com>
Date: Tue, 1 Aug 2023 23:18:11 +0200
Subject: [PATCH 1/2] fix nullref

---
 src/LEGO.AsyncAPI.Readers/ParseNodes/AsyncApiAnyConverter.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/LEGO.AsyncAPI.Readers/ParseNodes/AsyncApiAnyConverter.cs b/src/LEGO.AsyncAPI.Readers/ParseNodes/AsyncApiAnyConverter.cs
index 4bd72a19..1ed73752 100644
--- a/src/LEGO.AsyncAPI.Readers/ParseNodes/AsyncApiAnyConverter.cs
+++ b/src/LEGO.AsyncAPI.Readers/ParseNodes/AsyncApiAnyConverter.cs
@@ -62,7 +62,7 @@ public static IAsyncApiAny GetSpecificAsyncApiAny(IAsyncApiAny asyncApiAny, Asyn
                         return new AsyncApiDateTime(dateTimeValue);
                     }
                 }
-                else if (type.Value.HasFlag(SchemaType.String))
+                else if (type != null && type.Value.HasFlag(SchemaType.String))
                 {
                     if (format == "byte")
                     {

From 9ad74e5fdc7e1a04cde95298eba565fa92d12238 Mon Sep 17 00:00:00 2001
From: Alex Wichmann <alekcarlsen@gmail.com>
Date: Tue, 1 Aug 2023 23:36:53 +0200
Subject: [PATCH 2/2] add test

---
 .../ParseNodes/AsyncApiAnyConverter.cs        |  2 +-
 .../Models/AsyncApiMessage_Should.cs          | 27 +++++++++++++++++++
 2 files changed, 28 insertions(+), 1 deletion(-)

diff --git a/src/LEGO.AsyncAPI.Readers/ParseNodes/AsyncApiAnyConverter.cs b/src/LEGO.AsyncAPI.Readers/ParseNodes/AsyncApiAnyConverter.cs
index 1ed73752..d2f0ec2b 100644
--- a/src/LEGO.AsyncAPI.Readers/ParseNodes/AsyncApiAnyConverter.cs
+++ b/src/LEGO.AsyncAPI.Readers/ParseNodes/AsyncApiAnyConverter.cs
@@ -109,7 +109,7 @@ public static IAsyncApiAny GetSpecificAsyncApiAny(IAsyncApiAny asyncApiAny, Asyn
                 return new AsyncApiNull();
             }
 
-            if (schema?.Type == null)
+            if (type == null)
             {
                 if (value == "true")
                 {
diff --git a/test/LEGO.AsyncAPI.Tests/Models/AsyncApiMessage_Should.cs b/test/LEGO.AsyncAPI.Tests/Models/AsyncApiMessage_Should.cs
index f207a31c..edb13eff 100644
--- a/test/LEGO.AsyncAPI.Tests/Models/AsyncApiMessage_Should.cs
+++ b/test/LEGO.AsyncAPI.Tests/Models/AsyncApiMessage_Should.cs
@@ -16,6 +16,33 @@ namespace LEGO.AsyncAPI.Tests.Models
 
     internal class AsyncApiMessage_Should
     {
+            [Test]
+            public void AsyncApiMessage_WithNoType_DeserializesToDefault()
+            {
+                // Arrange
+                var expected =
+                    @"{
+                      ""payload"": {
+                        ""type"": ""object"",
+                        ""properties"": {
+                          ""someProp"": {
+                            ""enum"": [
+                              ""test"",
+                              ""test2""
+                            ]
+                          }
+                        }
+                      }
+                    }";
+
+                // Act
+                var message = new AsyncApiStringReader().ReadFragment<AsyncApiMessage>(expected, AsyncApiVersion.AsyncApi2_0, out var diagnostic);
+
+                // Assert
+                diagnostic.Errors.Should().BeEmpty();
+                message.Payload.Properties.First().Value.Enum.Should().HaveCount(2);
+            }
+
             [Test]
             public void AsyncApiMessage_WithNoSchemaFormat_DeserializesToDefault()
             {