"""Packaging smoke test.

Guards against ``pyproject.toml`` regressions (see Client.Python-018) that
break ``pip wheel`` / ``pip install -e`` while leaving the in-tree
``pytest`` suite green via ``[tool.pytest.ini_options] pythonpath = ["src"]``.

The test invokes ``python -m pip wheel . --no-deps`` against the package
root and asserts a wheel file is produced. Any future PEP 639 / SPDX
violation (or any other ``setuptools.build_meta`` configuration error)
will be caught here at test time rather than at first install on a clean
machine.
"""

from __future__ import annotations

import pathlib
import subprocess
import sys

_PACKAGE_ROOT = pathlib.Path(__file__).resolve().parent.parent


def test_pip_wheel_build_succeeds(tmp_path: pathlib.Path) -> None:
    """``pip wheel .`` against the package root produces a wheel.

    This exercises ``setuptools.build_meta`` end-to-end — the same path
    used by ``pip install -e .`` — and would have caught
    Client.Python-018 at commit time.
    """

    result = subprocess.run(
        [
            sys.executable,
            "-m",
            "pip",
            "wheel",
            ".",
            "--no-deps",
            "--wheel-dir",
            str(tmp_path),
        ],
        cwd=str(_PACKAGE_ROOT),
        capture_output=True,
        text=True,
    )
    assert result.returncode == 0, (
        f"pip wheel failed (exit {result.returncode}):\n"
        f"--- stdout ---\n{result.stdout}\n"
        f"--- stderr ---\n{result.stderr}"
    )
    wheels = list(tmp_path.glob("mxaccess_gateway_client-*.whl"))
    assert wheels, (
        "expected a mxaccess_gateway_client wheel in "
        f"{tmp_path}; got {list(tmp_path.iterdir())}"
    )