Files
musicmouse/python-backend/tests/test_lirc.py

343 lines
11 KiB
Python

"""The IR remote: line parsing, and the service against a scripted lircd."""
from __future__ import annotations
import asyncio
import contextlib
from collections.abc import AsyncIterator
from pathlib import Path
import pytest
from musicmouse.clock import FakeClock
from musicmouse.config import LircConfig, RemoteSlotConfig, load_config
from musicmouse.events import (
ConnectionChanged,
Event,
IntentEvent,
NextTrackRequested,
PauseRequested,
PlayAlbumRequested,
PlayRequested,
PlaySeriesLatestRequested,
PreviousTrackRequested,
VolumeChangeRequested,
)
from musicmouse.services.lirc import LircService
from musicmouse.services.lirc.protocol import LircButtonEvent, parse_line
from musicmouse.simulator.harness import Simulation, build_simulation
from tests.conftest import VALID_CONFIG, write_config
# ---------------------------------------------------------------------- parse_line
def test_a_valid_line_is_parsed() -> None:
assert parse_line("0000000000001781 00 BTN_1 Hauppauge") == LircButtonEvent(
code="0000000000001781", repeat=0, button="BTN_1", remote="Hauppauge"
)
def test_a_repeat_field_is_hexadecimal() -> None:
event = parse_line("0000000000001781 0a BTN_1 Hauppauge")
assert event is not None
assert event.repeat == 10
@pytest.mark.parametrize(
"line",
[
"",
"0000000000001781 00 BTN_1", # missing remote
"0000000000001781 00 BTN_1 Hauppauge extra", # extra token
"0000000000001781 zz BTN_1 Hauppauge", # non-hex repeat
],
)
def test_malformed_lines_are_rejected(line: str) -> None:
assert parse_line(line) is None
def test_surrounding_whitespace_is_ignored() -> None:
assert parse_line(" 0000000000001781 00 BTN_1 Hauppauge \n") is not None
# --------------------------------------------------------------------------- service
class ScriptedLircd:
"""A tiny stand-in for lircd: accepts one connection at a time and lets the test
push lines to whoever is currently connected."""
def __init__(self) -> None:
self._writer: asyncio.StreamWriter | None = None
self._connected = asyncio.Event()
self.connection_count = 0
async def _handle(self, _reader: asyncio.StreamReader, writer: asyncio.StreamWriter) -> None:
self._writer = writer
self.connection_count += 1
self._connected.set()
with contextlib.suppress(asyncio.CancelledError):
await asyncio.Event().wait() # held open until the test drops it
async def wait_connected(self) -> None:
await self._connected.wait()
async def send(self, line: str) -> None:
await self._connected.wait()
assert self._writer is not None
self._writer.write(f"{line}\n".encode())
await self._writer.drain()
# Real socket I/O, not the fake clock: give the reader a moment to actually
# see the bytes before the caller checks what happened.
await asyncio.sleep(0.02)
def drop(self) -> None:
"""Simulate the link dying: close the socket, and wait for a new connect."""
assert self._writer is not None
self._writer.close()
self._writer = None
self._connected = asyncio.Event()
@pytest.fixture
async def lircd() -> AsyncIterator[tuple[ScriptedLircd, asyncio.base_events.Server]]:
station = ScriptedLircd()
server = await asyncio.start_server(station._handle, "127.0.0.1", 0)
try:
yield station, server
finally:
server.close()
# The scripted connection handler holds its connection open forever (it does
# not know the test is done), so `wait_closed()` alone would hang here.
server.close_clients()
await server.wait_closed()
@pytest.fixture
async def sim(config_dir: Path) -> AsyncIterator[Simulation]:
config = load_config(write_config(config_dir, VALID_CONFIG))
# Real time for the socket I/O itself, virtual time for the reconnect sleep - tests
# drive that explicitly via `sim.clock.advance()` and drain the bus after.
simulation = await build_simulation(config, clock=FakeClock())
try:
yield simulation
finally:
await simulation.aclose()
def _lirc_config(port: int, *, reconnect_interval: float = 5.0) -> LircConfig:
return LircConfig(host="127.0.0.1", port=port, reconnect_interval=reconnect_interval)
async def _run_service(sim: Simulation, config: LircConfig) -> asyncio.Task[None]:
service = LircService(sim.app, config, clock=sim.clock)
return asyncio.create_task(service.run())
async def test_transport_and_volume_buttons_emit_intents(
lircd: tuple[ScriptedLircd, asyncio.base_events.Server], sim: Simulation
) -> None:
station, server = lircd
port = server.sockets[0].getsockname()[1]
seen: list[Event] = []
sim.bus.subscribe_all(seen.append)
task = await _run_service(sim, _lirc_config(port))
try:
await station.wait_connected()
await station.send("0 00 KEY_PLAY Hauppauge")
await station.send("0 00 KEY_PAUSE Hauppauge")
await station.send("0 00 KEY_STOP Hauppauge")
await station.send("0 00 KEY_PREVIOUS Hauppauge")
await station.send("0 00 KEY_FORWARD Hauppauge")
await station.send("0 00 KEY_VOLUMEUP Hauppauge")
await sim.bus.drain()
finally:
task.cancel()
kinds = [type(event) for event in seen if isinstance(event, IntentEvent)]
assert kinds == [
PlayRequested,
PauseRequested,
PauseRequested,
PreviousTrackRequested,
NextTrackRequested,
VolumeChangeRequested,
]
async def test_events_from_another_remote_are_ignored(
lircd: tuple[ScriptedLircd, asyncio.base_events.Server], sim: Simulation
) -> None:
station, server = lircd
port = server.sockets[0].getsockname()[1]
seen: list[Event] = []
sim.bus.subscribe_all(seen.append)
task = await _run_service(sim, _lirc_config(port))
try:
await station.wait_connected()
await station.send("0 00 KEY_PLAY small_led_remote")
await sim.bus.drain()
finally:
task.cancel()
assert not any(isinstance(event, IntentEvent) for event in seen)
async def test_transport_buttons_only_act_on_the_first_press(
lircd: tuple[ScriptedLircd, asyncio.base_events.Server], sim: Simulation
) -> None:
station, server = lircd
port = server.sockets[0].getsockname()[1]
seen: list[Event] = []
sim.bus.subscribe(NextTrackRequested, seen.append)
task = await _run_service(sim, _lirc_config(port))
try:
await station.wait_connected()
await station.send("0 00 KEY_FORWARD Hauppauge")
await station.send("0 01 KEY_FORWARD Hauppauge")
await station.send("0 02 KEY_FORWARD Hauppauge")
await sim.bus.drain()
finally:
task.cancel()
assert len(seen) == 1
async def test_volume_buttons_act_on_every_repeat(
lircd: tuple[ScriptedLircd, asyncio.base_events.Server], sim: Simulation
) -> None:
station, server = lircd
port = server.sockets[0].getsockname()[1]
seen: list[VolumeChangeRequested] = []
sim.bus.subscribe(VolumeChangeRequested, seen.append)
task = await _run_service(sim, _lirc_config(port))
try:
await station.wait_connected()
await station.send("0 00 KEY_VOLUMEDOWN Hauppauge")
await station.send("0 01 KEY_VOLUMEDOWN Hauppauge")
await station.send("0 02 KEY_VOLUMEDOWN Hauppauge")
await sim.bus.drain()
finally:
task.cancel()
assert len(seen) == 3
assert all(event.delta < 0 for event in seen)
async def test_mute_toggles_and_restores(
lircd: tuple[ScriptedLircd, asyncio.base_events.Server], sim: Simulation
) -> None:
station, server = lircd
port = server.sockets[0].getsockname()[1]
task = await _run_service(sim, _lirc_config(port))
try:
await station.wait_connected()
sim.player.set_volume(37)
await sim.bus.drain()
await station.send("0 00 KEY_MUTE Hauppauge")
await sim.bus.drain()
assert sim.player.volume == 0
await station.send("0 00 KEY_MUTE Hauppauge")
await sim.bus.drain()
assert sim.player.volume == 37
finally:
task.cancel()
async def test_a_digit_with_no_assignment_does_nothing(
lircd: tuple[ScriptedLircd, asyncio.base_events.Server], sim: Simulation
) -> None:
station, server = lircd
port = server.sockets[0].getsockname()[1]
seen: list[Event] = []
sim.bus.subscribe(PlayAlbumRequested, seen.append)
sim.bus.subscribe(PlaySeriesLatestRequested, seen.append)
task = await _run_service(sim, _lirc_config(port))
try:
await station.wait_connected()
await station.send("0 00 BTN_5 Hauppauge")
await sim.bus.drain()
finally:
task.cancel()
assert seen == []
async def test_an_album_digit_plays_from_the_beginning(
lircd: tuple[ScriptedLircd, asyncio.base_events.Server], sim: Simulation
) -> None:
station, server = lircd
port = server.sockets[0].getsockname()[1]
album = next(a for a in sim.app.library.albums if a.title == "Kinderparty Lieder")
sim.app.config.remote = {"3": RemoteSlotConfig(target_kind="album", target=album.id)}
task = await _run_service(sim, _lirc_config(port))
try:
await station.wait_connected()
await station.send("0 00 BTN_3 Hauppauge")
await sim.bus.drain()
finally:
task.cancel()
assert sim.player.playlist is not None
assert sim.player.playlist.album_id == album.id
assert sim.player.track_index == 0
async def test_a_series_digit_plays_the_latest_episode(
lircd: tuple[ScriptedLircd, asyncio.base_events.Server], sim: Simulation
) -> None:
station, server = lircd
port = server.sockets[0].getsockname()[1]
sim.app.config.remote = {"7": RemoteSlotConfig(target_kind="series", target="Wissen macht Ah")}
task = await _run_service(sim, _lirc_config(port))
try:
await station.wait_connected()
await station.send("0 00 BTN_7 Hauppauge")
await sim.bus.drain()
finally:
task.cancel()
assert sim.player.playlist is not None
played = sim.app.library.get(sim.player.playlist.album_id)
assert played is not None
assert played.title == "Neu"
async def test_a_dropped_link_reconnects(
lircd: tuple[ScriptedLircd, asyncio.base_events.Server], sim: Simulation
) -> None:
station, server = lircd
port = server.sockets[0].getsockname()[1]
seen: list[ConnectionChanged] = []
sim.bus.subscribe(ConnectionChanged, seen.append)
task = await _run_service(sim, _lirc_config(port, reconnect_interval=10.0))
try:
await station.wait_connected()
await sim.bus.drain()
assert station.connection_count == 1
station.drop()
await asyncio.sleep(0.05) # let the client notice EOF
await sim.bus.drain()
assert isinstance(sim.clock, FakeClock)
await sim.clock.advance(10.0)
await station.wait_connected()
await sim.bus.drain()
assert station.connection_count == 2
assert [event.connected for event in seen] == [True, False, True]
finally:
task.cancel()