28 lines
1 KiB
Python
28 lines
1 KiB
Python
from textual._loop import loop_first, loop_first_last, loop_last
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def test_loop_first():
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assert list(loop_first([])) == []
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iterable = loop_first(["apples", "oranges", "pears", "lemons"])
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assert next(iterable) == (True, "apples")
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assert next(iterable) == (False, "oranges")
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assert next(iterable) == (False, "pears")
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assert next(iterable) == (False, "lemons")
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def test_loop_last():
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assert list(loop_last([])) == []
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iterable = loop_last(["apples", "oranges", "pears", "lemons"])
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assert next(iterable) == (False, "apples")
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assert next(iterable) == (False, "oranges")
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assert next(iterable) == (False, "pears")
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assert next(iterable) == (True, "lemons")
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def test_loop_first_last():
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assert list(loop_first_last([])) == []
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iterable = loop_first_last(["apples", "oranges", "pears", "lemons"])
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assert next(iterable) == (True, False, "apples")
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assert next(iterable) == (False, False, "oranges")
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assert next(iterable) == (False, False, "pears")
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assert next(iterable) == (False, True, "lemons")
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