Method test_topsort_cycle

mypy/test/testgraph.py:74–79

(self)

        assert_equal(res, [{b, c}, {a}])

    def test_topsort_cycle(self) -> None:
        a = frozenset({"A"})
        b = frozenset({"B"})
        data: dict[AbstractSet[str], set[AbstractSet[str]]] = {a: {b}, b: {a}}
        with self.assertRaises(AssertionError):
            list(topsort(data))

    def test_scc(self) -> None:
        vertices = {"A", "B", "C", "D"}