import unittest

from pangram import is_pangram


# Tests adapted from `problem-specifications//canonical-data.json` @ v1.4.1

class PangramTest(unittest.TestCase):

    def test_sentence_empty(self):
        self.assertIs(is_pangram(''), False)

    def test_recognizes_a_perfect_lower_case_pangram(self):
        self.assertIs(is_pangram('abcdefghijklmnopqrstuvwxyz'), True)

    def test_pangram_with_only_lower_case(self):
        self.assertIs(
            is_pangram('the quick brown fox jumps over the lazy dog'),
            True)

    def test_missing_character_x(self):
        self.assertIs(
            is_pangram('a quick movement of the enemy will '
                       'jeopardize five gunboats'),
            False)

    def test_another_missing_character(self):
        self.assertIs(is_pangram('five boxing wizards jump quickly at it'),
                      False)

    def test_pangram_with_underscores(self):
        self.assertIs(
            is_pangram('the_quick_brown_fox_jumps_over_the_lazy_dog'),
            True)

    def test_pangram_with_numbers(self):
        self.assertIs(
            is_pangram('the 1 quick brown fox jumps over the 2 lazy dogs'),
            True)

    def test_missing_letters_replaced_by_numbers(self):
        self.assertIs(
            is_pangram('7h3 qu1ck brown fox jumps ov3r 7h3 lazy dog'),
            False)

    def test_pangram_with_mixedcase_and_punctuation(self):
        self.assertIs(
            is_pangram('"Five quacking Zephyrs jolt my wax bed."'),
            True)

    def test_upper_and_lower_case_versions_of_the_same_character(self):
        self.assertIs(
            is_pangram('the quick brown fox jumped over the lazy FX'),
            False)


if __name__ == '__main__':
    unittest.main()