import os
from pathlib import Path

import pytest

from pip._internal.utils.compat import get_path_uid


def test_get_path_uid() -> None:
    path = os.getcwd()
    assert get_path_uid(path) == os.stat(path).st_uid


@pytest.mark.skipif("not hasattr(os, 'O_NOFOLLOW')")
def test_get_path_uid_without_NOFOLLOW(monkeypatch: pytest.MonkeyPatch) -> None:
    monkeypatch.delattr("os.O_NOFOLLOW")
    path = os.getcwd()
    assert get_path_uid(path) == os.stat(path).st_uid


# Skip unconditionally on Windows, as symlinks need admin privs there
@pytest.mark.skipif("sys.platform == 'win32'")
@pytest.mark.skipif("not hasattr(os, 'symlink')")
def test_get_path_uid_symlink(tmpdir: Path) -> None:
    f = tmpdir / "symlink" / "somefile"
    f.parent.mkdir()
    f.write_text("content")
    fs = f"{f}_link"
    os.symlink(f, fs)
    with pytest.raises(OSError):
        get_path_uid(fs)


@pytest.mark.skipif("not hasattr(os, 'O_NOFOLLOW')")
@pytest.mark.skipif("not hasattr(os, 'symlink')")
def test_get_path_uid_symlink_without_NOFOLLOW(
    tmpdir: Path, monkeypatch: pytest.MonkeyPatch
) -> None:
    monkeypatch.delattr("os.O_NOFOLLOW")
    f = tmpdir / "symlink" / "somefile"
    f.parent.mkdir()
    f.write_text("content")
    fs = f"{f}_link"
    os.symlink(f, fs)
    with pytest.raises(OSError):
        get_path_uid(fs)