medius 2.2.1

"""Mock-backed tests for the Python bindings.

These drive the Pythonic API through a MockBox and assert command recording,
query round-trips (which also catch ctypes layout bugs), stream delivery, error
mapping, and handle lifecycle.
"""

import gc

import pytest

import medius
from medius import (
    BadProtoVerError,
    Button,
    Caps,
    CatchEventKind,
    CatchMask,
    CatchState,
    Device,
    FrameType,
    Health,
    ImperfectStatus,
    KbdCaps,
    KeyboardEvent,
    Key,
    LockDirection,
    LockTarget,
    LogLevel,
    MediaEvent,
    MediaKey,
    MediusError,
    MockBox,
    MouseCaps,
    MouseEvent,
    MouseInfo,
    Rate,
    Stats,
    Status,
    Version,
)


def test_mock_feature_present():
    assert medius.HAS_MOCK, "tests need a mock-enabled libmedius_capi"


def test_meta_functions():
    assert medius.abi_version() >= 1
    assert medius.version_string()
    assert medius.default_query_timeout_ms() > 0
    assert medius.default_keepalive_cadence_ms() > 0


# --- handshake + version ---


def test_configure_version_then_open_mock_matches():
    mock = MockBox()
    # The handshake checks proto_ver, so reuse the default proto and only change
    # the firmware triple.
    with Device.with_mock(mock) as d:
        proto = d.query_version().proto_ver
    mock.set_version(Version(proto, 9, 8, 7))
    with mock.open() as d:
        v = d.query_version()
    assert v == Version(proto, 9, 8, 7)
    mock.close()


def test_silent_mock_raises_on_open():
    mock = MockBox()
    mock.silent()
    with pytest.raises(MediusError):
        Device.open_mock(mock)
    mock.close()


def test_bad_proto_version_reports_status_and_proto_ver():
    mock = MockBox()
    mock.set_version(Version(99, 1, 0, 0))
    with pytest.raises(BadProtoVerError) as ei:
        Device.open_mock(mock)
    assert ei.value.status == Status.ERR_BAD_PROTO_VER
    assert ei.value.proto_ver == 99
    mock.close()


# --- commands recorded ---


def test_recorded_frame_payload_readable():
    with MockBox() as mock, Device.with_mock(mock) as d:
        d.move_rel(1, 2)
        frame = mock.recorded_frame(0)
        assert frame is not None
        assert frame.type == FrameType.MOVE
        assert len(frame.payload) > 0
        assert mock.recorded_frame(99) is None


# --- query round-trips (these catch ctypes layout bugs) ---


def test_caps_roundtrip():
    caps = Caps(
        mouse=MouseCaps(n_buttons=5, has_x=True, has_y=True, has_wheel=True, has_report_id=False, n_hid=2),
        keyboard=KbdCaps(n_keys=6, nkro=False, has_consumer=True, has_system=False, has_report_id=True),
        mouse_change_driven=False,
        kbd_change_driven=True,
    )
    with MockBox() as mock:
        mock.set_caps(caps)
        with Device.with_mock(mock) as d:
            got = d.caps()
    assert got == caps
    assert got.has_mouse()
    assert got.has_keyboard()
    assert got.is_composite()


def test_rate_roundtrip_and_native_hz():
    # change_driven is not on the RATE wire payload, so it is excluded.
    rate = Rate(native_period_us=1000, poll_period_us=1000, confident=True, change_driven=False)
    with MockBox() as mock:
        mock.set_rate(rate)
        with Device.with_mock(mock) as d:
            got = d.query_rate()
    assert got.native_period_us == 1000
    assert got.poll_period_us == 1000
    assert got.confident is True
    assert abs(got.native_hz() - 1000.0) < 0.5

    off = Rate(native_period_us=0, poll_period_us=1000, confident=False, change_driven=True)
    assert off.native_hz() is None


def test_locks_roundtrip_and_is_locked():
    with MockBox() as mock:
        mock.set_locks(0b11)  # X positive + negative
        with Device.with_mock(mock) as d:
            locks = d.query_locks()
    assert locks.mask == 0b11
    assert locks.is_locked(LockTarget.x(), LockDirection.BOTH)
    assert not locks.is_locked(LockTarget.y(), LockDirection.BOTH)


def test_health_roundtrip():
    health = Health(
        link_up=True,
        mouse_attached=False,
        clone_configured=True,
        injection_active=False,
        rate_confident=True,
        lock_on=False,
        catch_on=True,
        kbd_attached=False,
    )
    with MockBox() as mock:
        mock.set_health(health)
        with Device.with_mock(mock) as d:
            got = d.query_health()
    assert got == health


def test_mouse_info_roundtrip():
    info = MouseInfo(vid=0x046D, pid=0xC08B, bcd_device=0x0111, bcd_usb=0x0200, has_serial=True, has_bos=False)
    with MockBox() as mock:
        mock.set_mouse_info(info)
        with Device.with_mock(mock) as d:
            got = d.query_mouse_info()
    assert got == info


def test_stats_roundtrip():
    stats = Stats(
        inject_emits=123456,
        tx_drops=12,
        tx_merges=34,
        tx_maxdepth=7,
        tx_wedges=2,
        wakeups=900,
        reset_count=3,
        config_count=4,
    )
    with MockBox() as mock:
        mock.set_stats(stats)
        with Device.with_mock(mock) as d:
            got = d.query_stats()
    assert got == stats


def test_catch_state_roundtrip():
    state = CatchState(mask=int(CatchMask.ALL), dropped=42)
    with MockBox() as mock:
        mock.set_catch_state(state)
        with Device.with_mock(mock) as d:
            got = d.query_catch()
    assert got.mask == int(CatchMask.ALL)
    assert got.dropped == 42


def test_imperfect_roundtrip():
    status = ImperfectStatus(allowed=True, over_capacity=True, clone_imperfect=False)
    with MockBox() as mock:
        mock.set_imperfect_status(status)
        with Device.with_mock(mock) as d:
            got = d.query_imperfect()
    assert got == status


def test_movement_riding_roundtrip():
    with MockBox() as mock:
        mock.set_movement_riding(8)
        with Device.with_mock(mock) as d:
            assert d.query_movement_riding() == 8
        mock.set_movement_riding(None)
        with Device.with_mock(mock) as d:
            assert d.query_movement_riding() is None


def test_counters_readable():
    with MockBox() as mock, Device.with_mock(mock) as d:
        d.move_rel(1, 0)
        c = d.counters()
        assert c.frames_tx >= 1


# --- streams ---


def test_catch_delivers_mouse_event():
    with MockBox() as mock, Device.with_mock(mock) as d:
        with d.catch_events(CatchMask.ALL) as stream:
            mock.push_event(1, MouseEvent(buttons=1 << Button.SIDE1, dx=12, dy=-34, wheel=1))
            ev = stream.recv_timeout(2000)
            assert ev is not None
            assert ev.kind == CatchEventKind.MOUSE
            assert ev.mouse.dx == 12
            assert ev.mouse.dy == -34
            assert ev.mouse.wheel == 1
            assert ev.is_pressed(Button.SIDE1)
            assert not ev.is_pressed(Button.LEFT)


def test_catch_delivers_keyboard_event():
    with MockBox() as mock, Device.with_mock(mock) as d:
        with d.catch_events(CatchMask.KEYS) as stream:
            mock.push_kb_event(1, KeyboardEvent(modifiers=0, keys=[int(Key.ESCAPE)]))
            ev = stream.recv_timeout(2000)
            assert ev is not None
            assert ev.kind == CatchEventKind.KEYBOARD
            assert ev.keyboard.keys == [int(Key.ESCAPE)]
            assert ev.is_pressed(Key.ESCAPE)
            assert not ev.is_pressed(Key.A)


def test_catch_delivers_media_event():
    with MockBox() as mock, Device.with_mock(mock) as d:
        with d.catch_events(CatchMask.ALL) as stream:
            mock.push_cons_event(1, MediaEvent(keys=[int(MediaKey.VOLUME_UP)]))
            ev = stream.recv_timeout(2000)
            assert ev is not None
            assert ev.kind == CatchEventKind.MEDIA
            assert ev.is_pressed(MediaKey.VOLUME_UP)


def test_try_recv_returns_none_when_empty():
    with MockBox() as mock, Device.with_mock(mock) as d:
        with d.catch_events(CatchMask.ALL) as stream:
            assert stream.try_recv() is None
            assert stream.dropped == 0


def test_log_stream_delivers_line():
    with MockBox() as mock, Device.with_mock(mock) as d:
        with d.logs() as logs:
            mock.push_log(LogLevel.WARN, "hello world")
            line = logs.recv_timeout(2000)
            assert line is not None
            assert line.level == LogLevel.WARN
            assert line.text == "hello world"


# --- lifecycle / safety ---


def test_clone_shares_state():
    with MockBox() as mock:
        d = Device.with_mock(mock)
        d2 = d.clone()  # second owner of the same connection
        d.move_rel(1, 0)
        d2.move_rel(2, 0)
        mock2 = mock.clone()  # shares the recorded state
        assert mock2.recorded() == 2
        d.close()
        d2.close()
        mock2.close()


def test_event_stream_clone_shares_subscription():
    with MockBox() as mock, Device.with_mock(mock) as d:
        with d.catch_events(CatchMask.ALL) as stream:
            stream2 = stream.clone()
            mock.push_event(1, MouseEvent(buttons=0, dx=9, dy=0, wheel=0))
            ev = stream2.recv_timeout(2000)
            assert ev is not None and ev.kind == CatchEventKind.MOUSE and ev.mouse.dx == 9
            stream2.close()


def test_double_close_is_safe():
    mock = MockBox()
    d = Device.with_mock(mock)
    d.close()
    d.close()  # idempotent
    mock.close()
    mock.close()


def test_gc_frees_cleanly():
    mock = MockBox()
    d = Device.with_mock(mock)
    stream = d.catch_events(CatchMask.ALL)
    del stream
    del d
    del mock
    gc.collect()  # must not crash


def test_event_is_pressed_helpers_match_logic():
    e = MouseEvent(buttons=0b1010, dx=0, dy=0, wheel=0)
    assert e.is_pressed(Button.RIGHT)
    assert e.is_pressed(Button.SIDE1)
    assert not e.is_pressed(Button.LEFT)

    k = KeyboardEvent(modifiers=1 << 0, keys=[int(Key.A)])  # left ctrl held
    assert k.is_pressed(Key.LEFT_CTRL)
    assert k.is_pressed(Key.A)
    assert not k.is_pressed(Key.B)