public static bool CheckDigitIsCorrect(string isbn)
{
if (IsbnFormat.CorrectFormat(isbn) == false || StringHandling.IsValidInput(isbn) == false)
{
return(false);
}
isbn = StringHandling.RemoveWhiteSpaceAndDashes(isbn);
if (IsbnFormat.ContainsNumbers(isbn) == false)
{
return(false);
}
List <int> isbnList = StringHandling.IsbnStringToList(isbn);
int checkDigit = CheckDigit(isbnList);
if (checkDigit == isbnList[12])
{
return(true);
}
else
{
return(false);
}
}
public void removed_extra_characters()
{
string input = "a b c";
string inputRemoved = StringHandling.RemoveWhiteSpaceAndDashes(input);
Assert.AreEqual("abc", inputRemoved);
}
public void string_is_converted_to_list()
{
List <int> listOfNum = new List <int>();
listOfNum.Add(1);
listOfNum.Add(2);
listOfNum.Add(3);
List <int> functionList = StringHandling.IsbnStringToList("123");
Assert.AreEqual(listOfNum, functionList);
}
public void is_valid_string_input()
{
bool validInput = StringHandling.IsValidInput("aa");
Assert.AreEqual(true, validInput);
}