public void Get_And_Set_Tracking_Number()
        {
            _te = new TrackingException("324a");

            _te.TrackingNumber = "asdf3";
            Assert.AreEqual("asdf3", _te.TrackingNumber);
        }
        public void Constructor_Sets_TrackingNumber_And_Message()
        {
            _te = new TrackingException("asd2a", "wejklasd");

            Assert.AreEqual("asd2a", _te.TrackingNumber);
            Assert.AreEqual("wejklasd", _te.Message);
        }
        public void Get_And_Set_Tracking_Number()
        {
            _te = new TrackingException("324a");

            _te.TrackingNumber = "asdf3";
            Assert.AreEqual("asdf3", _te.TrackingNumber);
        }
        public void Constructor_Sets_TrackingNumber_And_Message()
        {
            _te = new TrackingException("asd2a", "wejklasd");

            Assert.AreEqual("asd2a", _te.TrackingNumber);
            Assert.AreEqual("wejklasd", _te.Message);
        }
        public void Constructor_Sets_TrackingNumber()
        {
            _te = new TrackingException("324a");

            Assert.AreEqual("324a", _te.TrackingNumber);
        }
        public void Constructor_Sets_TrackingNumber()
        {
            _te = new TrackingException("324a");

            Assert.AreEqual("324a", _te.TrackingNumber);
        }