openpilot_comma/system/webrtc/tests/test_webrtcd.py

#!/usr/bin/env python
import pytest
import asyncio
import json
# for aiortc and its dependencies
import warnings
warnings.filterwarnings("ignore", category=DeprecationWarning)

from openpilot.system.webrtc.webrtcd import get_stream

import aiortc
from teleoprtc import WebRTCOfferBuilder
from parameterized import parameterized_class


@parameterized_class(("in_services", "out_services"), [
  (["testJoystick"], ["carState"]),
  ([], ["carState"]),
  (["testJoystick"], []),
  ([], []),
])
@pytest.mark.asyncio
class TestWebrtcdProc():
  async def assertCompletesWithTimeout(self, awaitable, timeout=1):
    try:
      async with asyncio.timeout(timeout):
        await awaitable
    except TimeoutError:
      pytest.fail("Timeout while waiting for awaitable to complete")

  async def test_webrtcd(self, mocker):
    mock_request = mocker.MagicMock()
    async def connect(offer):
      body = {'sdp': offer.sdp, 'cameras': offer.video, 'bridge_services_in': self.in_services, 'bridge_services_out': self.out_services}
      mock_request.json.side_effect = mocker.AsyncMock(return_value=body)
      response = await get_stream(mock_request)
      response_json = json.loads(response.text)
      return aiortc.RTCSessionDescription(**response_json)

    builder = WebRTCOfferBuilder(connect)
    builder.offer_to_receive_video_stream("road")
    builder.offer_to_receive_audio_stream()
    if len(self.in_services) > 0 or len(self.out_services) > 0:
      builder.add_messaging()

    stream = builder.stream()

    await self.assertCompletesWithTimeout(stream.start())
    await self.assertCompletesWithTimeout(stream.wait_for_connection())

    assert stream.has_incoming_video_track("road")
    assert stream.has_incoming_audio_track()
    assert stream.has_messaging_channel() == (len(self.in_services) > 0 or len(self.out_services) > 0)

    video_track, audio_track = stream.get_incoming_video_track("road"), stream.get_incoming_audio_track()
    await self.assertCompletesWithTimeout(video_track.recv())
    await self.assertCompletesWithTimeout(audio_track.recv())

    await self.assertCompletesWithTimeout(stream.stop())

    # cleanup, very implementation specific, test may break if it changes
    assert mock_request.app["streams"].__setitem__.called, "Implementation changed, please update this test"
    _, session = mock_request.app["streams"].__setitem__.call_args.args
    await self.assertCompletesWithTimeout(session.post_run_cleanup())