public void InspectCorrectCheckDigitHandlesNullValues()
 {
     BusinessIdentifierSpecification spec = new BusinessIdentifierSpecification(new int[] { 7, 9, 10, 5, 8, 4, 2 });
     spec.InspectCorrectCheckDigit(null);
 }
 public void InspectCorrectCheckDigitHandlesEmptyId()
 {
     BusinessIdentifierSpecification spec = new BusinessIdentifierSpecification(new int[] { 7, 9, 10, 5, 8, 4, 2 });
     spec.InspectCorrectCheckDigit(new BusinessId(""));
 }