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"""Tests for harness/F/sweep.py -- CLI cartesian product wiring."""

import pytest

from harness.F import sweep


def test_csv_expands_all_dedups_and_rejects_unknowns():
    assert sweep._csv("all", ("a", "b")) == ["a", "b"]
    assert sweep._csv("b,a,b", ("a", "b")) == ["b", "a"]
    with pytest.raises(ValueError, match="unknown values"):
        sweep._csv("c", ("a", "b"))