public void SedolsWithIncorrectChecksum(string sedol)
{
var actual = new SedolValidate().ValidateSedol(sedol);
var expected = new SedolValidationResult(sedol, false, false, Constants.CHECKSUM_NOT_VALID);
AssertValidationResult(expected, actual);
}
public void ValidSedols(string sedol)
{
var actual = new SedolValidate().ValidateSedol(sedol);
var expected = new SedolValidationResult(sedol, true, false, null);
AssertValidationResult(expected, actual);
}
public void UserDefinedSedolsWithCorrectChecksum(string sedol)
{
var actual = new SedolValidate().ValidateSedol(sedol);
var expected = new SedolValidationResult(sedol, true, true, null);
AssertValidationResult(expected, actual);
}
public void SedolsContainingInvalidCharacters(string sedol)
{
var actual = new SedolValidate().ValidateSedol(sedol);
var expected = new SedolValidationResult(sedol, false, false, Constants.SEDOL_CONTAINS_INVALID_CHARACTERS);
AssertValidationResult(expected, actual);
}
public void SedolsNotSevenCharacters(string sedol)
{
var actual = new SedolValidate().ValidateSedol(sedol);
var expected = new SedolValidationResult(sedol, false, false, Constants.INPUT_STRING_NOT_VALID_LENGTH);
AssertValidationResult(expected, actual);
}
public void StringContainingVowelsWillReturnExpectedValidationDetails(string sedol)
{
var actual = new SedolValidator().ValidateSedol(sedol);
var expected = new SedolValidationResult(sedol, false, false, Constants.INPUT_STRING_CONTAINS_VOWELS);
AssertValidationResult(expected, actual);
}
public void SedolsContainingNonAlphanumericCharacters(string sedol)
{
var actual = new SedolValidator().ValidateSedol(sedol);
var expected = new SedolValidationResult(sedol, false, false, Constants.INPUT_STRING_NOT_ALPHANUMERIC);
AssertValidationResult(expected, actual);
}
public void Constructor_GivenValidParamenters_ConstructsValidInstance()
{
// Arrange
var testInput = "testInput";
var isValid = true;
var isUserDefined = false;
var testValidationDetails = "testDetails";
// Act
var actual = new SedolValidationResult(testInput, isValid, isUserDefined, testValidationDetails);
// Assert
Assert.IsNotNull(actual);
Assert.AreEqual(testInput, actual.InputString);
Assert.AreEqual(isValid, actual.IsValidSedol);
Assert.AreEqual(isUserDefined, actual.IsUserDefined);
Assert.AreEqual(testValidationDetails, actual.ValidationDetails);
}
public ISedolValidationResult ValidateSedol(string input)
{
SedolValidationResult result = new SedolValidationResult()
{
InputString = input,
IsValidSedol = false,
IsUserDefined = false,
ValidationDetails = null
};
if (String.IsNullOrEmpty(input) || (input.Length != 7))
{
result.ValidationDetails = "Input string was not 7-characters long";
}
else
{
#region calculate checkdigit
int[] weights = new int[] { 1, 3, 1, 7, 3, 9, 1 };
int weightedCheckSum = 0;
for (int i = 0; i < 6; i++)
{
char letterOrDigit = input[i];
int letterOrDigitValue = 0;
if (letterOrDigit >= 'A' && letterOrDigit <= 'Z')
{
letterOrDigitValue = GetLetterValue(letterOrDigit);
}
else
{
int digitValue = 0;
bool parseOk = int.TryParse(letterOrDigit.ToString(), out digitValue);
if (parseOk)
{
letterOrDigitValue = digitValue;
}
}
weightedCheckSum += letterOrDigitValue * weights[i];
}
int checkDigit = (10 - (weightedCheckSum % 10)) % 10;
#endregion
int inputCheckDigit = 0;
bool inputCheckDigitParseOk = int.TryParse(input[6].ToString(), out inputCheckDigit);
if (inputCheckDigitParseOk && checkDigit != inputCheckDigit)
{
result.ValidationDetails = "Checksum digit does not agree with the rest of the input";
result.IsValidSedol = false;
}
else
{
result.IsValidSedol = true;
}
//There's no information in the readme file about what "IsUserDefined" means.
//From the scenarios we can assume that if the SEDOL starts with 9 it's user defined ;)
result.IsUserDefined = input[0] == '9';
}
return(result);
}
