exercism/python/twelve-days/twelve_days_test.py

import unittest

from twelve_days import recite


# Tests adapted from `problem-specifications//canonical-data.json` @ v1.2.0

class TwelveDaysTest(unittest.TestCase):
    def test_verse1(self):
        expected = ["On the first day of Christmas my true love gave to me: "
                    "a Partridge in a Pear Tree."]
        self.assertEqual(recite(1, 1), expected)

    def test_verse2(self):
        expected = ["On the second day of Christmas my true love gave to me: "
                    "two Turtle Doves, "
                    "and a Partridge in a Pear Tree."]
        self.assertEqual(recite(2, 2), expected)

    def test_verse3(self):
        expected = ["On the third day of Christmas my true love gave to me: "
                    "three French Hens, "
                    "two Turtle Doves, "
                    "and a Partridge in a Pear Tree."]
        self.assertEqual(recite(3, 3), expected)

    def test_verse4(self):
        expected = ["On the fourth day of Christmas my true love gave to me: "
                    "four Calling Birds, "
                    "three French Hens, "
                    "two Turtle Doves, "
                    "and a Partridge in a Pear Tree."]
        self.assertEqual(recite(4, 4), expected)

    def test_verse5(self):
        expected = ["On the fifth day of Christmas my true love gave to me: "
                    "five Gold Rings, "
                    "four Calling Birds, "
                    "three French Hens, "
                    "two Turtle Doves, "
                    "and a Partridge in a Pear Tree."]
        self.assertEqual(recite(5, 5), expected)

    def test_verse6(self):
        expected = ["On the sixth day of Christmas my true love gave to me: "
                    "six Geese-a-Laying, "
                    "five Gold Rings, "
                    "four Calling Birds, "
                    "three French Hens, "
                    "two Turtle Doves, "
                    "and a Partridge in a Pear Tree."]
        self.assertEqual(recite(6, 6), expected)

    def test_verse7(self):
        expected = ["On the seventh day of Christmas my true love gave to me: "
                    "seven Swans-a-Swimming, "
                    "six Geese-a-Laying, "
                    "five Gold Rings, "
                    "four Calling Birds, "
                    "three French Hens, "
                    "two Turtle Doves, "
                    "and a Partridge in a Pear Tree."]
        self.assertEqual(recite(7, 7), expected)

    def test_verse8(self):
        expected = ["On the eighth day of Christmas my true love gave to me: "
                    "eight Maids-a-Milking, "
                    "seven Swans-a-Swimming, "
                    "six Geese-a-Laying, "
                    "five Gold Rings, "
                    "four Calling Birds, "
                    "three French Hens, "
                    "two Turtle Doves, "
                    "and a Partridge in a Pear Tree."]
        self.assertEqual(recite(8, 8), expected)

    def test_verse9(self):
        expected = ["On the ninth day of Christmas my true love gave to me: "
                    "nine Ladies Dancing, "
                    "eight Maids-a-Milking, "
                    "seven Swans-a-Swimming, "
                    "six Geese-a-Laying, "
                    "five Gold Rings, "
                    "four Calling Birds, "
                    "three French Hens, "
                    "two Turtle Doves, "
                    "and a Partridge in a Pear Tree."]
        self.assertEqual(recite(9, 9), expected)

    def test_verse10(self):
        expected = ["On the tenth day of Christmas my true love gave to me: "
                    "ten Lords-a-Leaping, "
                    "nine Ladies Dancing, "
                    "eight Maids-a-Milking, "
                    "seven Swans-a-Swimming, "
                    "six Geese-a-Laying, "
                    "five Gold Rings, "
                    "four Calling Birds, "
                    "three French Hens, "
                    "two Turtle Doves, "
                    "and a Partridge in a Pear Tree."]
        self.assertEqual(recite(10, 10), expected)

    def test_verse11(self):
        expected = ["On the eleventh day of Christmas "
                    "my true love gave to me: "
                    "eleven Pipers Piping, "
                    "ten Lords-a-Leaping, "
                    "nine Ladies Dancing, "
                    "eight Maids-a-Milking, "
                    "seven Swans-a-Swimming, "
                    "six Geese-a-Laying, "
                    "five Gold Rings, "
                    "four Calling Birds, "
                    "three French Hens, "
                    "two Turtle Doves, "
                    "and a Partridge in a Pear Tree."]
        self.assertEqual(recite(11, 11), expected)

    def test_verse12(self):
        expected = ["On the twelfth day of Christmas my true love gave to me: "
                    "twelve Drummers Drumming, "
                    "eleven Pipers Piping, "
                    "ten Lords-a-Leaping, "
                    "nine Ladies Dancing, "
                    "eight Maids-a-Milking, "
                    "seven Swans-a-Swimming, "
                    "six Geese-a-Laying, "
                    "five Gold Rings, "
                    "four Calling Birds, "
                    "three French Hens, "
                    "two Turtle Doves, "
                    "and a Partridge in a Pear Tree."]
        self.assertEqual(recite(12, 12), expected)

    def test_first_three_verses_of_the_song(self):
        expected = [recite(n, n)[0] for n in range(1, 4)]
        self.assertEqual(recite(1, 3), expected)

    def test_three_verses_from_the_middle_of_the_song(self):
        expected = [recite(n, n)[0] for n in range(4, 7)]
        self.assertEqual(recite(4, 6), expected)

    def test_the_whole_song(self):
        expected = [recite(n, n)[0] for n in range(1, 13)]
        self.assertEqual(recite(1, 12), expected)


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