Method test_funky_ordering

test/ext/test_orderinglist.py:410–467

(self)

        eq_([b.position for b in s1.bullets], [0, 1, 2])

    def test_funky_ordering(self):
        class Pos:
            def __init__(self):
                self.position = None

        step_factory = ordering_list(
            "position", ordering_func=step_numbering(2)
        )

        stepped = step_factory()
        stepped.append(Pos())
        stepped.append(Pos())
        stepped.append(Pos())
        stepped.append(Pos())

        for li, pos in (0, 0), (1, 2), (2, 4), (3, 6):
            self.assert_(stepped[li].position == pos)

        fib_factory = ordering_list(
            "position", ordering_func=fibonacci_numbering("position")
        )

        fibbed = fib_factory()
        fibbed.append(Pos())
        fibbed.append(Pos())
        fibbed.append(Pos())
        fibbed.append(Pos())
        fibbed.append(Pos())

        for li, pos in (0, 1), (1, 2), (2, 3), (3, 5), (4, 8):
            self.assert_(fibbed[li].position == pos)

        fibbed.insert(2, Pos())
        fibbed.insert(4, Pos())
        fibbed.insert(6, Pos())

        for li, pos in (
            (0, 1),
            (1, 2),
            (2, 3),
            (3, 5),
            (4, 8),
            (5, 13),
            (6, 21),
            (7, 34),
        ):
            self.assert_(fibbed[li].position == pos)

        alpha_factory = ordering_list("position", ordering_func=alpha_ordering)
        alpha = alpha_factory()
        alpha.append(Pos())
        alpha.append(Pos())
        alpha.append(Pos())

        alpha.insert(1, Pos())

        for li, pos in (0, "A"), (1, "B"), (2, "C"), (3, "D"):
            self.assert_(alpha[li].position == pos)