Function test_update_cells_0_rows

python/pathway/tests/test_common.py:3556–3583

()

def test_update_cells_0_rows():
    old = T(
        """
            | pet  |  owner  | age
        """
    )
    update = T(
        """
            | owner  | age
        """
    )
    expected = T(
        """
            | pet  |  owner  | age
        """
    )

    match = re.escape(
        "Key sets of self and other in update_cells are the same. "
        "Using with_columns instead of update_cells."
    )

    with warns_here(match=match):
        new = old.update_cells(update)
    with warns_here(match=match):
        new2 = old << update
    assert_table_equality(new, expected)
    assert_table_equality(new2, expected)


def test_update_cells_ids_dont_match():