def test_difference_05():
# random
for _ in range(100):
int_list = [
random.randint(-100, 100) for _ in range(random.randint(0, 50))
]
assert exam.difference(int_list) == [
abs(int_list[x] - int_list[x + 1])
for x in range(len(int_list) - 1)
]
def test_difference_04():
# negative numbers
assert exam.difference([-1, 1, -1, 1, -1]) == [2, 2, 2, 2]
assert exam.difference([-100, -10, 100, -1]) == [90, 110, 101]
def test_difference_02():
# one difference
assert exam.difference([1, 2]) == [1]
assert exam.difference([0, 10]) == [10]
assert exam.difference([10, 0]) == [10]
def test_difference_03():
# multiple differences
assert exam.difference([1, 2, 3, 2, 1]) == [1, 1, 1, 1]
assert exam.difference([1, 4, 7, 4, 1, 1]) == [3, 3, 3, 3, 0]
def test_difference_01():
# too short
assert exam.difference([]) == []
assert exam.difference([1]) == []