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);
}