import unittest

from pangram import (
    is_pangram,
)

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


class PangramTest(unittest.TestCase):
    def test_empty_sentence(self):
        self.assertIs(is_pangram(""), False)

    def test_perfect_lower_case(self):
        self.assertIs(is_pangram("abcdefghijklmnopqrstuvwxyz"), True)

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

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

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

    def test_with_underscores(self):
        self.assertIs(is_pangram("the_quick_brown_fox_jumps_over_the_lazy_dog"), True)

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

    def test_a_m_and_a_m_are_26_different_characters_but_not_a_pangram(self):
        self.assertIs(is_pangram("abcdefghijklm ABCDEFGHIJKLM"), False)

    # Additional tests for this track

    def test_sentence_without_lower_bound(self):
        self.assertIs(is_pangram("bcdefghijklmnopqrstuvwxyz"), False)

    def test_sentence_without_upper_bound(self):
        self.assertIs(is_pangram("abcdefghijklmnopqrstuvwxy"), False)


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