def test_read_noformat_arbitrary():
 _identifiers.update(_IDENTIFIERS_ORIGINAL)
 with pytest.raises(io_registry.IORegistryError) as exc:
  TestData.read(object())
 assert str(exc.value).startswith(u'Format could not be identified.')

def test_read_noformat_arbitrary ( ) : _identifiers . update ( _IDENTIFIERS_ORIGINAL ) with pytest . raises ( io_registry . IORegistryError ) as exc : TestData . read ( object ( ) ) assert str ( exc . value ) . startswith ( u'Format could not be identified.' )
test that all identifier functions can accept arbitrary input .