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
