def test_update_unknown():
    ctx = Context()
    assert _default_context.keys() not in u'xyzzy'

    assert_raises(KeyError, ctx.update, xyzzy=123)
    assert u'xyzzy' not in ctx
dataset/ETHPy150Open jek/flatland/tests/markup/test_context.py/test_update_unknown/swapped operands of `not in`