"""Version metadata checks.

These keep the CI version-bump gate meaningful: `__version__` must stay a
parseable `MAJOR.MINOR.PATCH` string and be surfaced by `--version`.
"""

import re
import sys

import cadence


def test_version_is_semver():
    assert re.fullmatch(r"\d+\.\d+\.\d+", cadence.__version__)


def test_version_flag_reports_version(monkeypatch, capsys):
    monkeypatch.setattr(sys, "argv", ["cadence", "--version"])
    try:
        cadence.parse_args()
    except SystemExit as exc:
        assert exc.code == 0
    assert cadence.__version__ in capsys.readouterr().out