public void ListSourceGetPosition() { tlog.Debug(tag, $"ListSourceGetPosition START"); var para = new TestEnumerable(); var testingTarget = new ListSource(para); Assert.IsNotNull(testingTarget, "should be not null"); Assert.IsInstanceOf <ListSource>(testingTarget, "should be an instance of testing target class!"); Assert.AreEqual(testingTarget.GetPosition(1), 0, "The index of the first item of ListSouce should be 0."); testingTarget.Dispose(); tlog.Debug(tag, $"ListSourceGetPosition END (OK)"); }