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# Copyright 2021-2022 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# -----------------------------------------------------------------------------
# Imports
# -----------------------------------------------------------------------------
import asyncio
import pytest
from bumble import core
from bumble.rfcomm import (
DLC,
RFCOMM_PSM,
Client,
RFCOMM_Frame,
Server,
find_rfcomm_channel_with_uuid,
find_rfcomm_channels,
make_service_sdp_records,
)
from . import test_utils
_TIMEOUT = 0.1
# -----------------------------------------------------------------------------
def basic_frame_check(x):
serialized = bytes(x)
if len(serialized) < 500:
print('Original:', x)
print('Serialized:', serialized.hex())
parsed = RFCOMM_Frame.from_bytes(serialized)
if len(serialized) < 500:
print('Parsed:', parsed)
parsed_bytes = bytes(parsed)
if len(serialized) < 500:
print('Parsed Bytes:', parsed_bytes.hex())
assert parsed_bytes == serialized
x_str = str(x)
parsed_str = str(parsed)
assert x_str == parsed_str
# -----------------------------------------------------------------------------
def test_frames():
data = bytes.fromhex('033f011c')
frame = RFCOMM_Frame.from_bytes(data)
basic_frame_check(frame)
# -----------------------------------------------------------------------------
@pytest.mark.asyncio
async def test_connection_and_disconnection() -> None:
devices = test_utils.TwoDevices()
await devices.setup_connection()
accept_future: asyncio.Future[DLC] = asyncio.get_running_loop().create_future()
channel = Server(devices[0]).listen(acceptor=accept_future.set_result)
assert devices.connections[1]
multiplexer = await Client(devices.connections[1]).start()
dlcs = await asyncio.gather(accept_future, multiplexer.open_dlc(channel))
queues: list[asyncio.Queue] = [asyncio.Queue(), asyncio.Queue()]
for dlc, queue in zip(dlcs, queues):
dlc.sink = queue.put_nowait
dlcs[0].write(b'The quick brown fox jumps over the lazy dog')
assert await queues[1].get() == b'The quick brown fox jumps over the lazy dog'
dlcs[1].write(b'Lorem ipsum dolor sit amet')
assert await queues[0].get() == b'Lorem ipsum dolor sit amet'
closed = asyncio.Event()
dlcs[1].on('close', closed.set)
await dlcs[1].disconnect()
await closed.wait()
# -----------------------------------------------------------------------------
@pytest.mark.asyncio
async def test_receive_pdu_before_open_dlc_returns() -> None:
devices = await test_utils.TwoDevices.create_with_connection()
DATA = b'123'
accept_future: asyncio.Future[DLC] = asyncio.get_running_loop().create_future()
channel = Server(devices[0]).listen(acceptor=accept_future.set_result)
assert devices.connections[1]
multiplexer = await Client(devices.connections[1]).start()
open_dlc_task = asyncio.create_task(multiplexer.open_dlc(channel))
dlc_responder = await accept_future
dlc_responder.write(DATA)
dlc_initiator = await open_dlc_task
dlc_initiator_queue = asyncio.Queue() # type: ignore[var-annotated]
dlc_initiator.sink = dlc_initiator_queue.put_nowait
assert await asyncio.wait_for(dlc_initiator_queue.get(), timeout=_TIMEOUT) == DATA
# -----------------------------------------------------------------------------
@pytest.mark.asyncio
async def test_service_record():
HANDLE = 2
CHANNEL = 1
SERVICE_UUID = core.UUID('00000000-0000-0000-0000-000000000001')
devices = test_utils.TwoDevices()
await devices.setup_connection()
devices[0].sdp_service_records[HANDLE] = make_service_sdp_records(
HANDLE, CHANNEL, SERVICE_UUID
)
assert SERVICE_UUID in (await find_rfcomm_channels(devices.connections[1]))[CHANNEL]
assert (
await find_rfcomm_channel_with_uuid(devices.connections[1], SERVICE_UUID)
== CHANNEL
)
# -----------------------------------------------------------------------------
@pytest.mark.asyncio
async def test_context():
devices = test_utils.TwoDevices()
await devices.setup_connection()
server = Server(devices[0])
with server:
assert server.l2cap_server is not None
client = Client(devices.connections[1])
async with client:
assert client.l2cap_channel is not None
assert client.l2cap_channel is None
assert RFCOMM_PSM not in devices[0].l2cap_channel_manager.servers
# -----------------------------------------------------------------------------
if __name__ == '__main__':
test_frames()
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