public static void CustomJsonElementConverterInExtensionProperty()
{
const string Json = "{\"hello\": \"world\"}";
var options = new JsonSerializerOptions();
options.Converters.Add(new JsonElementConverter());
ClassWithExtensionPropertyAsJsonElement obj = JsonSerializer.Deserialize <ClassWithExtensionPropertyAsJsonElement>(Json, options);
JsonElement overflowProp = obj.MyOverflow["hello"];
Assert.Equal(JsonValueKind.Undefined, overflowProp.ValueKind);
string newJson = JsonSerializer.Serialize(obj, options);
Assert.Equal("{\"hello\":{\"Hi\":\"There\"}}", newJson);
}
public static void NullAsNullObjectOrJsonValueKindNull()
{
const string json = @"{""MissingProperty"":null}";
{
ClassWithExtensionPropertyAsObject obj = JsonSerializer.Deserialize <ClassWithExtensionPropertyAsObject>(json);
// A null value maps to <object>, so the value is null.
object elem = obj.MyOverflow["MissingProperty"];
Assert.Null(elem);
}
{
ClassWithExtensionPropertyAsJsonElement obj = JsonSerializer.Deserialize <ClassWithExtensionPropertyAsJsonElement>(json);
// Since JsonElement is a struct, it treats null as JsonValueKind.Null.
object elem = obj.MyOverflow["MissingProperty"];
Assert.IsType <JsonElement>(elem);
Assert.Equal(JsonValueKind.Null, ((JsonElement)elem).ValueKind);
}
}
