Function test_join_args

python/pathway/tests/test_error_messages.py:123–172

()

def test_join_args():
    left = T(
        """a
            1
            2"""
    )
    right = left.copy()

    with _assert_error_trace(
        ValueError,
        match=re.escape(
            "Received `how` argument but was not expecting any.\n"
            + "Consider using a generic join method that handles `how` to decide on a type of a join to be used."
        ),
    ):
        left.join_left(right, how=pw.JoinMode.LEFT)  # cause

    with _assert_error_trace(
        ValueError,
        match=re.escape(
            "Received `how` argument of join that is a string.\n"
            + "You probably want to use one of JoinMode.INNER, JoinMode.LEFT,"
            + " JoinMode.RIGHT or JoinMode.OUTER values."
        ),
    ):
        left.join(right, how="left")  # cause

    with _assert_error_trace(
        ValueError,
        match=re.escape(
            "How argument of join should be one of JoinMode.INNER, JoinMode.LEFT,"
            + " JoinMode.RIGHT or JoinMode.OUTER values."
        ),
    ):
        left.join(right, how=1)  # cause

    with _assert_error_trace(
        ValueError,
        match=re.escape("The id argument of a join has to be a ColumnReference."),
    ):
        left.join(right, id=1)  # cause

    with _assert_error_trace(
        ValueError,
        match=re.escape(
            "Join received extra kwargs.\n"
            + "You probably want to use TableLike.join(...).select(**kwargs) to compute output columns."
        ),
    ):
        left.join(right, a=left.a)  # cause


def test_session_simple():