import random
import unittest

import sorting


class TestInsertionSort(unittest.TestCase):

    def test_example(self):
        tmpl = [8, 2, 4, 9, 3, 6]
        a = tmpl[:]
        expected = [2, 3, 4, 6, 8, 9]

        sorting.insertion_sort(a)

        self.assertEqual(expected, a)

    def test_100_example(self):
        tmpl = list(range(0, 1000))
        a = tmpl[:]
        random.shuffle(a)
        expected = tmpl[:]

        sorting.insertion_sort(a)

        self.assertEqual(expected, a)

    def test_reversed_100_example(self):
        tmpl = list(range(0, 1000))
        a = list(reversed(tmpl[:]))
        expected = tmpl[:]

        sorting.insertion_sort(a)

        self.assertEqual(expected, a)

    def test_1000_example(self):
        tmpl = list(range(0, 1000))
        a = tmpl[:]
        random.shuffle(a)
        expected = tmpl[:]

        sorting.insertion_sort(a)

        self.assertEqual(expected, a)


class TestMergeSort(unittest.TestCase):

    def test_example(self):
        tmpl = [8, 2, 4, 9, 3, 6]
        a = tmpl[:]
        expected = [2, 3, 4, 6, 8, 9]

        actual = sorting.merge_sort(a)

        self.assertEqual(expected, actual)

    def test_100_example(self):
        tmpl = list(range(0, 1000))
        a = tmpl[:]
        random.shuffle(a)
        expected = tmpl[:]

        actual = sorting.merge_sort(a)

        self.assertEqual(expected, actual)

    def test_reversed_100_example(self):
        tmpl = list(range(0, 1000))
        a = list(reversed(tmpl[:]))
        expected = tmpl[:]

        actual = sorting.merge_sort(a)

        self.assertEqual(expected, actual)

    def test_1000_example(self):
        tmpl = list(range(0, 1000))
        a = tmpl[:]
        random.shuffle(a)
        expected = tmpl[:]

        actual = sorting.merge_sort(a)

        self.assertEqual(expected, actual)


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