using System; using Microsoft.VisualStudio.TestTools.UnitTesting; using VW.Serializer.Attributes; using VW; namespace cs_unittest_nofriend { class PrivateClass { [Feature] public int A { get; set; } } [TestClass] public class TestSerializer { [TestMethod] [ExpectedException(typeof(ArgumentException))] public void TestPrivateClassException() { using (var vw = new VowpalWabbit("")) { } } } }