84 lines
3 KiB
Python
84 lines
3 KiB
Python
import typing
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import contextlib
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import socket
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from unittest import mock
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import functools
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import asyncio
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if typing.TYPE_CHECKING:
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from lbry.dht.protocol.protocol import KademliaProtocol
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def get_time_accelerator(loop: asyncio.AbstractEventLoop,
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now: typing.Optional[float] = None) -> typing.Callable[[float], typing.Awaitable[None]]:
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"""
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Returns an async advance() function
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This provides a way to advance() the BaseEventLoop.time for the scheduled TimerHandles
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made by call_later, call_at, and call_soon.
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"""
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_time = now or loop.time()
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loop.time = functools.wraps(loop.time)(lambda: _time)
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async def accelerate_time(seconds: float) -> None:
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nonlocal _time
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if seconds < 0:
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raise ValueError('Cannot go back in time ({} seconds)'.format(seconds))
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_time += seconds
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await past_events()
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await asyncio.sleep(0)
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async def past_events() -> None:
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while loop._scheduled:
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timer: asyncio.TimerHandle = loop._scheduled[0]
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if timer not in loop._ready and timer._when <= _time:
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loop._scheduled.remove(timer)
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loop._ready.append(timer)
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if timer._when > _time:
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break
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await asyncio.sleep(0)
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async def accelerator(seconds: float):
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steps = seconds * 10.0
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for _ in range(max(int(steps), 1)):
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await accelerate_time(0.1)
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return accelerator
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@contextlib.contextmanager
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def mock_network_loop(loop: asyncio.AbstractEventLoop):
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dht_network: typing.Dict[typing.Tuple[str, int], 'KademliaProtocol'] = {}
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async def create_datagram_endpoint(proto_lam: typing.Callable[[], 'KademliaProtocol'],
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from_addr: typing.Tuple[str, int]):
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def sendto(data, to_addr):
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rx = dht_network.get(to_addr)
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if rx and rx.external_ip:
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# print(f"{from_addr[0]}:{from_addr[1]} -{len(data)} bytes-> {rx.external_ip}:{rx.udp_port}")
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return rx.datagram_received(data, from_addr)
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protocol = proto_lam()
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transport = asyncio.DatagramTransport(extra={'socket': mock_sock})
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transport.is_closing = lambda: False
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transport.close = lambda: mock_sock.close()
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mock_sock.sendto = sendto
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transport.sendto = mock_sock.sendto
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protocol.connection_made(transport)
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dht_network[from_addr] = protocol
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return transport, protocol
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with mock.patch('socket.socket') as mock_socket:
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mock_sock = mock.Mock(spec=socket.socket)
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mock_sock.setsockopt = lambda *_: None
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mock_sock.bind = lambda *_: None
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mock_sock.setblocking = lambda *_: None
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mock_sock.getsockname = lambda: "0.0.0.0"
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mock_sock.getpeername = lambda: ""
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mock_sock.close = lambda: None
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mock_sock.type = socket.SOCK_DGRAM
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mock_sock.fileno = lambda: 7
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mock_socket.return_value = mock_sock
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loop.create_datagram_endpoint = create_datagram_endpoint
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yield
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