def test_merge_sort():
"""test av sorterongsalgoritmer"""
assert merge_sort([5, 7, 4, 8, 1, 2, 6, 3]) == [1, 2, 3, 4, 5, 6, 7, 8]
assert merge_sort([]) == []
assert merge_sort([9, 5, 3, 12, 24, 1, 6, 9]) == [1, 3, 5, 6, 9, 9, 12, 24]
assert merge_sort([2421, 1279, 17, 5362, 3526,
12345]) == [17, 1279, 2421, 3526, 5362, 12345]
def test_merge_sort():
""" tester av sorteringsalgoritmer """
assert merge_sort([5, 7, 4, 8, 1, 2, 6, 3,
9]) == [1, 2, 3, 4, 5, 6, 7, 8, 9]
assert merge_sort([]) == []
assert merge_sort([2, 8, 5, 1, 13, 12, 3, 5]) == [1, 2, 3, 5, 5, 8, 12, 13]
assert merge_sort([35, 4000000, 374, 364, 399276,
10043]) == [35, 364, 374, 10043, 399276, 4000000]
def test_merge_sort(problem, expected_answer):
assert merge_sort(problem) == expected_answer