def test_derived_cols_from_lists_kw(test_data):
 ds = ChartDataSource.from_data(y=test_data.array_data)
 assert (ds['y'] == ['a', 'b'])

def test_derived_cols_from_lists_kw ( test_data ) : ds = ChartDataSource . from_data ( y = test_data . array_data ) assert ( ds [ 'y' ] == [ 'a' , 'b' ] )
list of lists for dimension results in column derivation .