async def test_accumulate_unexpected_kwarg():
"""Check that TypeError is raised when given nonsense kwargs."""
with pytest.raises(TypeError):
await aitertools.alist(aitertools.accumulate(x=range(10)))
async def test_accumulate_too_many_args():
"""Check if TypeError is raised on too many args."""
with pytest.raises(TypeError):
await aitertools.alist(aitertools.accumulate(range(10), 5, 6))
async def test_accumulate_too_few_args():
"""Check if TypeError is raised on too few args."""
with pytest.raises(TypeError):
await aitertools.alist(aitertools.accumulate())
async def test_accumulate_empty_iterable():
"""Check if accumulate works with empty iterables."""
assert (await aitertools.alist(
aitertools.accumulate([])
)) == []
async def test_accumulate_single_item():
"""Check if accumulate works on an iterable of one item."""
assert (await aitertools.alist(
aitertools.accumulate([7])
)) == [7]
async def test_accumulate_multiple_types(type_):
"""Check if accumulate works with multiple types."""
assert (await aitertools.alist(
aitertools.accumulate(map(type_, range(10)))
)) == list(map(type_, [0, 1, 3, 6, 10, 15, 21, 28, 36, 45]))
async def test_accumulate_non_numeric():
"""Check if accumulate works with non-numeric types."""
assert (await aitertools.alist(
aitertools.accumulate('abc')
)) == ['a', 'ab', 'abc']
async def test_accumulate_kwarg():
"""Check if accumulate works with kwargs."""
assert (await aitertools.alist(
aitertools.accumulate(iterable=range(10))
)) == [0, 1, 3, 6, 10, 15, 21, 28, 36, 45]
async def test_accumulate_matches_sync():
"""Check if async accumulate matches sync."""
assert (await aitertools.alist(
aitertools.accumulate(range(10))
)) == [0, 1, 3, 6, 10, 15, 21, 28, 36, 45]
async def test_accumulate_unary_func():
"""Check that TypeError is raised when accumulate with a unary function."""
with pytest.raises(TypeError):
await aitertools.alist(aitertools.accumulate(range(10), chr))
async def test_accumulate_binary_funcs(seed, func, expected):
"""Check if accumulate correctly applies custom binary functions."""
assert (await aitertools.alist(
aitertools.accumulate(seed, func)
)) == expected
async def test_accumulate_args_dont_add():
"""Check if TypeError is raised when iterable items don't add."""
with pytest.raises(TypeError):
await aitertools.alist(aitertools.accumulate([1, []]))