tests/utils/test_parsing.py

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import pytest

from pyiceberg.exceptions import ValidationError
from pyiceberg.utils.parsing import ParseNumberFromBrackets


def test_match_returns_the_bracketed_number() -> None:
    assert ParseNumberFromBrackets("fixed").match("fixed[22]") == 22
    assert ParseNumberFromBrackets("bucket").match("bucket[8]") == 8
    assert ParseNumberFromBrackets("truncate").match("truncate[16]") == 16


@pytest.mark.parametrize(
    "prefix, value",
    [
        pytest.param("fixed", "decimal[8]", id="wrong-prefix"),
        pytest.param("fixed", "fixed", id="missing-brackets"),
        pytest.param("truncate", "truncate[abc]", id="non-numeric"),
        pytest.param("truncate", "truncate[-1]", id="negative"),
    ],
)
def test_match_raises_with_expected_message(prefix: str, value: str) -> None:
    with pytest.raises(ValidationError) as exc_info:
        ParseNumberFromBrackets(prefix).match(value)
    assert str(exc_info.value) == f"Could not match {value}, expected format {prefix}[22]"