def test_oneitem_quicksort():
tlist = 1
with pytest.raises(TypeError):
quisort(tlist)
def test_oneitemlist_quicksort():
tlist = [1]
quisort(tlist)
assert tlist == [1]
def test_rand_quicksort():
tlist = range(500)
shuffle(tlist)
assert tlist != range(500)
quisort(tlist)
assert tlist == range(500)
def test_none_quicksort():
tlist = None
with pytest.raises(TypeError):
quisort(tlist)
def test_char_quicksort():
initlist = list('abcdefghijklmnopq')
tlist = initlist[:]
shuffle(tlist)
quisort(tlist)
assert tlist == initlist
def test_sameval_quicksort():
tlist = [3 for _ in range(500)]
quisort(tlist)
for item in tlist:
assert item == 3
def test_inorder_quicksort():
tlist = range(500)
quisort(tlist)
assert tlist == range(500)
def test_backward_quicksort():
tlist = range(500)
tlist.reverse()
quisort(tlist)
assert tlist == range(500)
