Use structs with non-default constructors as input types w/o configur…

…ing (#5844)

src/HotChocolate/Core/src/Types/Utilities/Serialization/InputObjectConstructorResolver.cs

@@ -24,7 +24,7 @@ internal static class InputObjectConstructorResolver
 
         if (AllPropertiesCanWrite(fields))
         {
-            if (constructors.Length == 0)
+            if (constructors.Length == 0 || type.IsValueType)
             {
                 return null;
             }

src/HotChocolate/Core/test/Types.Tests/Configuration/TypeDiscoveryTests.cs

@@ -37,6 +37,16 @@ public void TypeDiscovery_Should_InferStructs()
             .MatchSnapshot();
     }
 
+    [Fact]
+    public void InferInputStructsWithNonDefaultCtor()
+    {
+        SchemaBuilder.New()
+            .AddQueryType<QueryTypeWithInputStruct>()
+            .Create()
+            .Print()
+            .MatchSnapshot();
+    }
+
     public class QueryWithDateTime
     {
         public DateTimeOffset DateTimeOffset(DateTimeOffset time) => time;
@@ -109,4 +119,17 @@ public class QueryTypeWithStruct
 
         public DateTime ScalarDateTime { get; set; }
     }
+
+    public struct InputStructWithCtor
+    {
+        public InputStructWithCtor(System.Collections.Generic.IEnumerable<int> values) =>
+            Values = System.Collections.Immutable.ImmutableArray.CreateRange(values);
+
+        public System.Collections.Immutable.ImmutableArray<int> Values { get; set; }
+    }
+
+    public class QueryTypeWithInputStruct
+    {
+        public int Foo(InputStructWithCtor arg) => default;
+    }
 }

src/HotChocolate/Core/test/Types.Tests/Configuration/__snapshots__/TypeDiscoveryTests.InferInputStructsWithNonDefaultCtor.snap

@@ -0,0 +1,11 @@
+schema {
+  query: QueryTypeWithInputStruct
+}
+
+type QueryTypeWithInputStruct {
+  foo(arg: InputStructWithCtorInput!): Int!
+}
+
+input InputStructWithCtorInput {
+  values: [Int!]!
+}