def test_join(s, c, v0, e0, v1, e1): table1 = Table(s) table1.add_columns([c]) table1.columns[c].add_value(v0, e0) table2 = Table(s) table2.add_columns([c]) table2.columns[c].add_value(v1, e1) jtable = table1.join(table2) assert len(jtable.columns[c].values) == 2