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2c3c408 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 | from textual._loop import loop_first, loop_last, loop_first_last
def test_loop_first():
assert list(loop_first([])) == []
iterable = loop_first(["apples", "oranges", "pears", "lemons"])
assert next(iterable) == (True, "apples")
assert next(iterable) == (False, "oranges")
assert next(iterable) == (False, "pears")
assert next(iterable) == (False, "lemons")
def test_loop_last():
assert list(loop_last([])) == []
iterable = loop_last(["apples", "oranges", "pears", "lemons"])
assert next(iterable) == (False, "apples")
assert next(iterable) == (False, "oranges")
assert next(iterable) == (False, "pears")
assert next(iterable) == (True, "lemons")
def test_loop_first_last():
assert list(loop_first_last([])) == []
iterable = loop_first_last(["apples", "oranges", "pears", "lemons"])
assert next(iterable) == (True, False, "apples")
assert next(iterable) == (False, False, "oranges")
assert next(iterable) == (False, False, "pears")
assert next(iterable) == (False, True, "lemons")
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