public void TestSerializeMsalAccessTokenCacheItemWithAdditionalFields() { var item = CreateAccessTokenItem(); // Add an unknown field into the json var asJObject = item.ToJObject(); asJObject["unsupported_field_name"] = "this is a value"; // Ensure unknown field remains in the AdditionalFieldsJson block var item2 = MsalAccessTokenCacheItem.FromJObject(asJObject); Assert.AreEqual("{\r\n \"unsupported_field_name\": \"this is a value\"\r\n}", item2.AdditionalFieldsJson); // Ensure additional fields make the round trip into json asJObject = item2.ToJObject(); AssertAccessTokenHasJObjectFields( asJObject, new List <string> { "unsupported_field_name" }); }