41bd7c47ec
Updated exercise instructions Accepted new additional test case Regenerated test file and verified example solution continues to pass.
71 lines
2.3 KiB
Python
71 lines
2.3 KiB
Python
import unittest
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from isbn_verifier import (
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is_valid,
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)
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# Tests adapted from `problem-specifications//canonical-data.json`
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class IsbnVerifierTest(unittest.TestCase):
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def test_valid_isbn(self):
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self.assertIs(is_valid("3-598-21508-8"), True)
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def test_invalid_isbn_check_digit(self):
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self.assertIs(is_valid("3-598-21508-9"), False)
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def test_valid_isbn_with_a_check_digit_of_10(self):
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self.assertIs(is_valid("3-598-21507-X"), True)
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def test_check_digit_is_a_character_other_than_x(self):
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self.assertIs(is_valid("3-598-21507-A"), False)
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def test_invalid_check_digit_in_isbn_is_not_treated_as_zero(self):
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self.assertIs(is_valid("4-598-21507-B"), False)
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def test_invalid_character_in_isbn_is_not_treated_as_zero(self):
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self.assertIs(is_valid("3-598-P1581-X"), False)
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def test_x_is_only_valid_as_a_check_digit(self):
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self.assertIs(is_valid("3-598-2X507-9"), False)
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def test_valid_isbn_without_separating_dashes(self):
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self.assertIs(is_valid("3598215088"), True)
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def test_isbn_without_separating_dashes_and_x_as_check_digit(self):
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self.assertIs(is_valid("359821507X"), True)
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def test_isbn_without_check_digit_and_dashes(self):
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self.assertIs(is_valid("359821507"), False)
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def test_too_long_isbn_and_no_dashes(self):
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self.assertIs(is_valid("3598215078X"), False)
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def test_too_short_isbn(self):
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self.assertIs(is_valid("00"), False)
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def test_isbn_without_check_digit(self):
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self.assertIs(is_valid("3-598-21507"), False)
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def test_check_digit_of_x_should_not_be_used_for_0(self):
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self.assertIs(is_valid("3-598-21515-X"), False)
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def test_empty_isbn(self):
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self.assertIs(is_valid(""), False)
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def test_input_is_9_characters(self):
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self.assertIs(is_valid("134456729"), False)
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def test_invalid_characters_are_not_ignored_after_checking_length(self):
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self.assertIs(is_valid("3132P34035"), False)
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def test_invalid_characters_are_not_ignored_before_checking_length(self):
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self.assertIs(is_valid("3598P215088"), False)
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def test_input_is_too_long_but_contains_a_valid_isbn(self):
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self.assertIs(is_valid("98245726788"), False)
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if __name__ == "__main__":
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unittest.main()
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