318 lines
9.7 KiB
Python
318 lines
9.7 KiB
Python
"""Tests for the packet stream"""
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from asyncio import Event, ensure_future, gather
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from asyncio.events import AbstractEventLoop
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import json
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from typing import AsyncGenerator, Awaitable, Callable, Generator, List
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import pytest
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from pytest_mock import MockerFixture
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from secret_handshake.network import SHSDuplexStream
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from ssb.packet_stream import PacketStream, PSMessage, PSMessageType
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async def _collect_messages(generator: AsyncGenerator[PSMessage, None]) -> List[PSMessage]:
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results = []
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async for msg in generator:
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results.append(msg)
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return results
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MSG_BODY_1 = (
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b'{"previous":"%KTGP6W8vF80McRAZHYDWuKOD0KlNyKSq6Gb42iuV7Iw=.sha256","author":"@1+Iwm79DKvVBqYKFkhT6fWRbA'
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b'VvNNVH4F2BSxwhYmx8=.ed25519","sequence":116,"timestamp":1496696699331,"hash":"sha256","content":{"type"'
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b':"post","channel":"crypto","text":"Does anybody know any good resources (e.g. books) to learn cryptogra'
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b"phy? I'm not speaking of basic concepts (e.g. what's a private key) but the actual mathematics behind"
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b' the whole thing.\\nI have a copy of the \\"Handbook of Applied Cryptography\\" on my bookshelf but I f'
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b'ound it too long/hard to follow. Are there any better alternatives?","mentions":[]},"signature":"hqKePb'
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b'bTXWxEi1njDnOWFsL0M0AoNoWyBFgNE6KXj//DThepaZSy9vRbygDHX5uNmCdyOrsQrwZsZhmUYKwtDQ==.sig.ed25519"}'
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)
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MSG_BODY_2 = (
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b'{"previous":"%iQRhPyqmNLpGaO1Tpm1I22jqnUEwRwkCTDbwAGtM+lY=.sha256","author":"@1+Iwm79DKvVBqYKFkhT6fWRbA'
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b'VvNNVH4F2BSxwhYmx8=.ed25519","sequence":103,"timestamp":1496674211806,"hash":"sha256","content":{"type"'
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b':"post","channel":"git-ssb","text":"Is it only me or `git.scuttlebot.io` is timing out?\\n\\nE.g. try a'
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b'ccessing %vZCTqraoqKBKNZeATErXEtnoEr+wnT3p8tT+vL+29I4=.sha256","mentions":[{"link":"%vZCTqraoqKBKNZeATE'
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b'rXEtnoEr+wnT3p8tT+vL+29I4=.sha256"}]},"signature":"+i4U0HUGDDEyNoNr2NIROPnT3WQj3RuTaIhY5koWW8f0vwr4tZsY'
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b'mAkqqMwFWfP+eBIbc7DZ835er6r6h9CwAg==.sig.ed25519"}'
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)
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class MockSHSSocket(SHSDuplexStream):
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"""A mocked SHS socket"""
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def __init__(self): # pylint: disable=unused-argument
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super().__init__()
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self.input: List[bytes] = []
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self.output: List[bytes] = []
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self.is_connected = False
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self._on_connect: List[Callable[[SHSDuplexStream], Awaitable[None]]] = []
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def on_connect(self, cb: Callable[[SHSDuplexStream], Awaitable[None]]) -> None:
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"""Set the on_connect callback"""
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self._on_connect.append(cb)
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async def read(self) -> bytes:
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"""Read data from the socket"""
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if not self.input:
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raise StopAsyncIteration
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return self.input.pop(0)
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def write(self, data: bytes) -> None:
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"""Write data to the socket"""
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self.output.append(data)
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def feed(self, input_: List[bytes]) -> None:
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"""Feed data into the connection"""
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self.input += input_
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def get_output(self) -> Generator[bytes, None, None]:
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"""Get the output of a call"""
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while True:
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if not self.output:
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break
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yield self.output.pop(0)
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def disconnect(self) -> None:
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"""Disconnect from the remote party"""
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self.is_connected = False
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class MockSHSClient(MockSHSSocket):
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"""A mocked SHS client"""
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async def connect(self) -> None:
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"""Connect to a SHS server"""
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self.is_connected = True
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for cb in self._on_connect:
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await cb(self)
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class MockSHSServer(MockSHSSocket):
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"""A mocked SHS server"""
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def listen(self) -> None:
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"""Listen for new connections"""
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self.is_connected = True
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for cb in self._on_connect:
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ensure_future(cb(self))
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@pytest.fixture
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def ps_client(event_loop: AbstractEventLoop) -> MockSHSClient: # pylint: disable=unused-argument
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"""Fixture to provide a mocked SHS client"""
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return MockSHSClient()
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@pytest.fixture
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def ps_server(event_loop: AbstractEventLoop) -> MockSHSServer: # pylint: disable=unused-argument
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"""Fixture to provide a mocked SHS server"""
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return MockSHSServer()
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@pytest.mark.asyncio
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async def test_on_connect(ps_server: MockSHSServer) -> None: # pylint: disable=redefined-outer-name
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"""Test the on_connect callback functionality"""
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called = Event()
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async def _on_connect(_: SHSDuplexStream) -> None:
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called.set()
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ps_server.on_connect(_on_connect)
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ps_server.listen()
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await called.wait()
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assert ps_server.is_connected
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@pytest.mark.asyncio
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async def test_message_decoding(ps_client: MockSHSClient) -> None: # pylint: disable=redefined-outer-name
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"""Test message decoding"""
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await ps_client.connect()
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ps = PacketStream(ps_client)
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assert ps.is_connected
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ps_client.feed(
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[
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b"\n\x00\x00\x00\x9a\x00\x00\x04\xfb",
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b'{"name":["createHistoryStream"],"args":[{"id":"@omgyp7Pnrw+Qm0I6T6Fh5VvnKmodMXwnxTIesW2DgMg=.ed25519",'
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b'"seq":10,"live":true,"keys":false}],"type":"source"}',
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]
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)
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messages = await _collect_messages(ps)
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assert len(messages) == 1
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assert messages[0].type == PSMessageType.JSON
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assert messages[0].body == {
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"name": ["createHistoryStream"],
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"args": [
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{"id": "@omgyp7Pnrw+Qm0I6T6Fh5VvnKmodMXwnxTIesW2DgMg=.ed25519", "seq": 10, "live": True, "keys": False}
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],
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"type": "source",
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}
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@pytest.mark.asyncio
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async def test_message_encoding(ps_client: MockSHSClient) -> None: # pylint: disable=redefined-outer-name
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"""Test message encoding"""
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await ps_client.connect()
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ps = PacketStream(ps_client)
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assert ps.is_connected
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ps.send(
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{
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"name": ["createHistoryStream"],
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"args": [
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{"id": "@1+Iwm79DKvVBqYKFkhT6fWRbAVvNNVH4F2BSxwhYmx8=.ed25519", "seq": 1, "live": False, "keys": False}
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],
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"type": "source",
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},
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stream=True,
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)
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header, body = list(ps_client.get_output())
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assert header == b"\x0a\x00\x00\x00\xa6\x00\x00\x00\x01"
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assert json.loads(body.decode("utf-8")) == {
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"name": ["createHistoryStream"],
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"args": [
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{"id": "@1+Iwm79DKvVBqYKFkhT6fWRbAVvNNVH4F2BSxwhYmx8=.ed25519", "seq": 1, "live": False, "keys": False}
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],
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"type": "source",
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}
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@pytest.mark.asyncio
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async def test_message_stream(ps_client: MockSHSClient, mocker: MockerFixture): # pylint: disable=redefined-outer-name
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"""Test requesting a history stream"""
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await ps_client.connect()
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ps = PacketStream(ps_client)
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mocker.patch.object(ps, "register_handler", wraps=ps.register_handler)
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assert ps.is_connected
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ps.send(
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{
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"name": ["createHistoryStream"],
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"args": [
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{"id": "@1+Iwm79DKvVBqYKFkhT6fWRbAVvNNVH4F2BSxwhYmx8=.ed25519", "seq": 1, "live": False, "keys": False}
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],
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"type": "source",
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},
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stream=True,
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)
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assert ps.req_counter == 2
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assert ps.register_handler.call_count == 1 # pylint: disable=no-member
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handler = list(ps._event_map.values())[0][1] # pylint: disable=protected-access
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mock_process = mocker.patch.object(handler, "process")
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ps_client.feed([b"\n\x00\x00\x02\xc5\xff\xff\xff\xff", MSG_BODY_1])
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msg = await ps.read()
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assert mock_process.await_count == 1
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# responses have negative req
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assert msg.req == -1
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assert msg.body["previous"] == "%KTGP6W8vF80McRAZHYDWuKOD0KlNyKSq6Gb42iuV7Iw=.sha256"
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assert ps.req_counter == 2
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stream_handler = ps.send(
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{
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"name": ["createHistoryStream"],
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"args": [
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{"id": "@1+Iwm79DKvVBqYKFkhT6fWRbAVvNNVH4F2BSxwhYmx8=.ed25519", "seq": 1, "live": False, "keys": False}
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],
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"type": "source",
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},
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stream=True,
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)
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assert ps.req_counter == 3
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assert ps.register_handler.call_count == 2 # pylint: disable=no-member
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handler = list(ps._event_map.values())[1][1] # pylint: disable=protected-access
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mock_process = mocker.patch.object(handler, "process", wraps=handler.process)
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ps_client.feed(
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[b"\n\x00\x00\x02\xc5\xff\xff\xff\xfe", MSG_BODY_1, b"\x0e\x00\x00\x023\xff\xff\xff\xfe", MSG_BODY_2]
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)
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# execute both message polling and response handling loops
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collected, handled = await gather(_collect_messages(ps), _collect_messages(stream_handler))
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# No messages collected, since they're all responses
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assert collected == [None, None]
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assert mock_process.call_count == 2
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for msg in handled:
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# responses have negative req
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assert msg.req == -2
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@pytest.mark.asyncio
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async def test_message_request(
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ps_server: MockSHSServer, mocker: MockerFixture # pylint: disable=redefined-outer-name
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) -> None:
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"""Test message sending"""
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ps_server.listen()
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ps = PacketStream(ps_server)
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mocker.patch.object(ps, "register_handler", wraps=ps.register_handler)
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ps.send({"name": ["whoami"], "args": []})
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header, body = list(ps_server.get_output())
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assert header == b"\x02\x00\x00\x00 \x00\x00\x00\x01"
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assert json.loads(body.decode("utf-8")) == {"name": ["whoami"], "args": []}
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assert ps.req_counter == 2
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assert ps.register_handler.call_count == 1 # pylint: disable=no-member
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handler = list(ps._event_map.values())[0][1] # pylint: disable=protected-access
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mock_process = mocker.patch.object(handler, "process")
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ps_server.feed(
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[
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b"\x02\x00\x00\x00>\xff\xff\xff\xff",
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b'{"id":"@1+Iwm79DKvVBqYKFkhT6fWRbAVvNNVH4F2BSxwhYmx8=.ed25519"}',
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]
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)
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msg = await ps.read()
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assert mock_process.await_count == 1
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# responses have negative req
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assert msg.req == -1
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assert msg.body["id"] == "@1+Iwm79DKvVBqYKFkhT6fWRbAVvNNVH4F2BSxwhYmx8=.ed25519"
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assert ps.req_counter == 2
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