Remove onlyInDebugType for UWP detection + add new null value tests

false positive in .NET Core

Author: mythz

src/ServiceStack.Text/Env.cs

@@ -197,8 +197,7 @@ private static bool IsRunningAsUwp()
             try
             {
                 IsNetNative = System.Runtime.InteropServices.RuntimeInformation.FrameworkDescription.StartsWith(".NET Native", StringComparison.OrdinalIgnoreCase);
-                var onlyInDebugType = Type.GetType("System.Runtime.InteropServices.WindowsRuntime.IActivationFactory,System.Runtime.InteropServices.WindowsRuntime");
-                return IsInAppContainer || IsNetNative || onlyInDebugType != null;
+                return IsInAppContainer || IsNetNative;
             }
             catch (Exception) {}
             return false;

tests/ServiceStack.Text.Tests/JsonTests/BasicJsonTests.cs

@@ -631,5 +631,34 @@ public void Does_include_null_values_in_lists()
                 Assert.That(fromJson.Count, Is.EqualTo(dto.Count));
             }
         }
+
+        [Test]
+        public void Can_deserialize_int_with_null_values()
+        {
+            var json = "{\"id\":null,\"name\":null}";
+            var dto = json.FromJson<ModelWithIdAndName>();
+            
+            Assert.That(dto.Id, Is.EqualTo(default(int)));
+            Assert.That(dto.Name, Is.Null);
+        }
+        
+        public partial class ThrowValidation
+        {
+            public virtual int Age { get; set; }
+            public virtual string Required { get; set; }
+            public virtual string Email { get; set; }
+        }
+
+        [Test]
+        public void Can_deserialize_ThrowValidation_with_null_values()
+        {
+            var json = "{\"version\":null,\"age\":null,\"required\":null,\"email\":\"invalidemail\"}";
+            var dto = json.FromJson<ThrowValidation>();
+            
+            Assert.That(dto.Age, Is.EqualTo(default(int)));
+            Assert.That(dto.Required, Is.Null);            
+            Assert.That(dto.Email, Is.EqualTo("invalidemail"));            
+        }
+
     }
 }