public void ConvertBack_NumericString_ReturnsNumber()
        {
            var converter = new DoubleToStringConverter();

            var result = converter.ConvertBack("3.14", null, null, null);

            Assert.AreEqual(3.14, result);
        }
        public void ConvertBack_NonNumericString_ReturnsZero()
        {
            var converter = new DoubleToStringConverter();

            var result = converter.ConvertBack("hello", null, null, null);

            Assert.AreEqual(0, result);
        }