public void CalculateChecksumDigitShouldThrowExceptionIfInputIsNull()
{
// Arrange
var sut = new SedolValidator();
// Act
sut.CalculateChecksumDigit(null);
// Assert - exception expected.
}
public void CalculateChecksumDigitShouldReturn4WhenInputIs070995()
{
// Arrange
var sut = new SedolValidator();
// Act
var actual = sut.CalculateChecksumDigit("070995");
// Assert
Assert.AreEqual('4', actual);
}