"""Test cache utility methods."""

from typing import List, Optional, Tuple

import pytest

from pdp.utils.cache import make_complicated_cache_key


@pytest.mark.parametrize(
    "key_vals, expect_exception, expected",
    [
        pytest.param(
            [],
            True,
            None,
            id="Empty key_vals should raise exception",
        ),
        pytest.param(
            [("breed", "mutt")],
            False,
            "dogs@breed#mutt",
            id="Single key-val is ok",
        ),
        pytest.param(
            [("breed", "mutt"), ("age", "unknown")],
            False,
            "dogs@breed#mutt|age#unknown",
            id="Multiple key-vals are separated by DELIMITER_ITEM (|)",
        ),
        pytest.param(
            [("age", "unknown"), ("breed", "mutt")],
            False,
            "dogs@age#unknown|breed#mutt",
            id="Order of list matters",
        ),
    ],
)
def test_make_complicated_cache_key(
    key_vals: List[Tuple[str, str]],
    expect_exception: bool,
    expected: Optional[str],
) -> None:
    if expect_exception:
        with pytest.raises(Exception):
            make_complicated_cache_key(
                "cats",
                key_vals,
            )
    else:
        actual = make_complicated_cache_key(
            "dogs",
            key_vals,
        )
        assert actual == expected