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"""Tests for meshbay_node.platform — the OS-specific paths and tool resolution.
The behaviour is selected on `sys.platform` at call time, so it is exercised
here by monkeypatching that (and `os.environ`) rather than only on the OS the
suite happens to run on.
"""
import asyncio
import sys
from pathlib import Path
from unittest.mock import Mock
import pytest
from meshbay_node import platform as plat
# ── Directories ──────────────────────────────────────────────────────────────
@pytest.mark.parametrize("fn,tail", [
(plat.config_dir, ()),
(plat.data_dir, ("data",)),
(plat.state_dir, ("state",)),
])
def test_windows_dirs_live_under_localappdata(fn, tail, monkeypatch, tmp_path):
monkeypatch.setattr(sys, "platform", "win32")
monkeypatch.setenv("LOCALAPPDATA", str(tmp_path))
assert fn() == tmp_path.joinpath("meshbay", *tail)
@pytest.mark.parametrize("fn,expected_tail", [
(plat.config_dir, (".config", "meshbay")),
(plat.data_dir, (".local", "share", "meshbay")),
(plat.state_dir, (".local", "state", "meshbay")),
])
def test_posix_dirs_follow_xdg(fn, expected_tail, monkeypatch):
monkeypatch.setattr(sys, "platform", "linux")
assert fn() == Path.home().joinpath(*expected_tail)
def test_windows_dirs_fall_back_to_home_without_localappdata(monkeypatch):
monkeypatch.setattr(sys, "platform", "win32")
monkeypatch.delenv("LOCALAPPDATA", raising=False)
assert plat.config_dir() == Path.home() / "meshbay"
# ── File permissions ─────────────────────────────────────────────────────────
def test_chmod_private_is_a_noop_on_windows(monkeypatch):
monkeypatch.setattr(sys, "platform", "win32")
fake = Mock(spec=Path)
plat.chmod_private(fake)
fake.chmod.assert_not_called()
def test_chmod_private_applies_mode_off_windows(monkeypatch, tmp_path):
monkeypatch.setattr(sys, "platform", "linux")
f = tmp_path / "secret"
f.write_text("x", encoding="utf-8")
called = {}
monkeypatch.setattr(type(f), "chmod", lambda self, m: called.setdefault("mode", m))
plat.chmod_private(f)
assert called["mode"] == 0o600
# ── Media tools ──────────────────────────────────────────────────────────────
def test_check_media_tools_raises_when_ffmpeg_is_missing(monkeypatch):
monkeypatch.setattr(plat.shutil, "which", lambda _n: None)
with pytest.raises(RuntimeError, match="not found in PATH"):
plat.check_media_tools()
def test_check_media_tools_stores_the_resolved_paths(monkeypatch):
monkeypatch.setattr(plat.shutil, "which",
lambda n: f"/opt/bin/{n}.exe")
plat.check_media_tools("ffmpeg", "ffprobe")
assert plat.ffmpeg_cmd() == "/opt/bin/ffmpeg.exe"
assert plat.ffprobe_cmd() == "/opt/bin/ffprobe.exe"
# ── Event loop ───────────────────────────────────────────────────────────────
def test_use_compatible_event_loop_is_a_noop_off_windows(monkeypatch):
monkeypatch.setattr(sys, "platform", "linux")
before = asyncio.get_event_loop_policy()
plat.use_compatible_event_loop()
assert asyncio.get_event_loop_policy() is before
@pytest.mark.skipif(sys.platform != "win32",
reason="WindowsSelectorEventLoopPolicy exists only on win32")
def test_use_compatible_event_loop_selects_the_selector_loop_on_windows():
plat.use_compatible_event_loop()
assert isinstance(asyncio.get_event_loop_policy(),
asyncio.WindowsSelectorEventLoopPolicy)
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