Method test_len

t/unit/utils/test_collections.py:124–129

(self)

        assert not bool(self.view)

    def test_len(self):
        assert len(self.view) == 3
        self.view.KEY = 33
        assert len(self.view) == 4
        self.view.clear()
        assert len(self.view) == 2

    def test_isa_mutable_mapping(self):
        from collections.abc import MutableMapping