public void ShouldNotGetTheLowestException()
            {
                var exception = new Exception();

                var lowsetException = exception.GetLowestInnerException();

                Assert.IsNotNull(lowsetException);

                Assert.IsInstanceOf(typeof(Exception), lowsetException);
            }
            public void ShouldGetTheLowestException()
            {
                var formatException = new FormatException();
                var argumentNullException = new ArgumentNullException("", formatException);
                var exception = new Exception("", argumentNullException);

                var lowsetException = exception.GetLowestInnerException();

                Assert.IsNotNull(lowsetException);
                Assert.IsInstanceOf(typeof(FormatException), lowsetException);
            }