import nose
import verify

def test_verify_isbn_correct_numeric_checksum():
    assert verify.verify_isbn('0-345-31452-2') == True,\
           'The checksum is a numerical value and all digits are correct.'
    
def test_verify_isbn_correct_checksum_X():
    assert verify.verify_isbn('0-688-09368-X') == True,\
           'The checksum is X and all the digits are correct.'

def test_verify_isbn_incorrect_numeric_checksum():
    assert verify.verify_isbn('0-354-31452-2') == False,\
           'The digits are out of order and the checksum is numeric.'

def test_verify_isbn_incorrect_checksum_X():
    assert verify.verify_isbn('0-688-09386-X') == False,\
           'The digits are out of order and the checksum is X.'

def test_verify_isbn_wrong_length():
    assert verify.verify_isbn('0-68-09386-X') == False,\
           'The isbn entered has the wrong number of characters.'
    
def test_verify_isbn_wrong_type():
    assert verify.verify_isbn([0-345-31452-2]) == False,\
           'The isbn entered is not in string format.'
    
def test_verify_isbn_no_dashes():
    assert verify.verify_isbn('0345314522') == True,\
           'The isbn entered does not contain any dashes.'
    
nose.runmodule()