def test_none (self):
# no args
assert _none(istrue)()
assert _none(isfalse)()
assert _none(truth)()
assert _none(not_)()
assert _none(isempty)()
# single arg
assert _none(istrue)(False)
assert _none(isstring)(42)
assert not _none(isfalse)(False)
# multiple args
assert _none(istrue)(False, 42)
assert _none(isstring)(23, 42)
assert not _none(isfalse)(0, True, False)
assert not _none(isstring)((), "bad robot!")
def test_short_circuit (self):
assert _any(passfail)(True, 'fail')
assert not _all(passfail)(False, 'fail')
assert not _none(passfail)(True, 'fail')
