Method test_try_unbind

tests/test_base.py:118–124

try_unbind() removes keys from context.

(self)

            build_bl().bind(x=42, y=23).unbind("x", "z")

    def test_try_unbind(self):
        """
        try_unbind() removes keys from context.
        """
        b = build_bl().bind(x=42, y=23).try_unbind("x", "y")

        assert {} == b._context

    def test_try_unbind_fail(self):
        """