| 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") | |