async def test_handle_new_stream(stream_names):
ip, port = ("127.0.0.1", 7777)
handled_events = {name: asyncio.Event() for name in stream_names}
async def handler(stream_name: StreamName, stream: Stream):
assert stream.name == stream_name
assert stream.ip == ip
assert stream.port == port
handled_events[stream_name].set()
reader_mock, writer_mock = get_connection_mock(ip, port)
with patch("asyncio.open_connection",
return_value=(reader_mock, writer_mock)):
async with open_multiplexer_context(ip, port) as multiplexer:
for stream_name in stream_names:
multiplexer.set_handler(stream_name,
partial(handler, stream_name))
for stream_name in stream_names:
encoded_message = get_encoded_message(stream_name,
MplexFlag.NEW_STREAM,
stream_name.encode())
reader_mock.feed_data(encoded_message)
await asyncio.wait_for(handled_events[stream_name].wait(),
timeout=0.05)
async def test_remove_handler():
ip, port = ("127.0.0.1", 7777)
stream_name = "stream.1"
handled_event = asyncio.Event()
async def handler(stream: Stream):
assert stream.name == stream_name
assert stream.ip == ip
assert stream.port == port
handled_event.set()
reader_mock, writer_mock = get_connection_mock(ip, port)
with patch("asyncio.open_connection",
return_value=(reader_mock, writer_mock)):
async with open_multiplexer_context(ip, port) as multiplexer:
multiplexer.set_handler(stream_name, handler)
multiplexer.remove_handler(stream_name)
encoded_message = get_encoded_message(stream_name,
MplexFlag.NEW_STREAM,
stream_name.encode())
reader_mock.feed_data(encoded_message)
with pytest.raises(asyncio.TimeoutError):
await asyncio.wait_for(handled_event.wait(), timeout=0.05)
with pytest.raises(KeyError):
multiplexer.remove_handler(stream_name)
async def test_iterate_read(data: bytes):
ip, port = ("127.0.0.1", 7777)
reader_mock, writer_mock = get_connection_mock(ip, port)
with patch("asyncio.open_connection",
return_value=(reader_mock, writer_mock)):
async with open_multiplexer_context(ip, port) as multiplexer:
stream_name = "stream.1"
stream = await multiplexer.multiplex(stream_name)
line_amount = random.randint(1, len(data))
data_with_lines = b"\n".join([data for _ in range(line_amount)])
chunked_data = data_with_lines.split(b"\n")
encoded_message = get_encoded_message(stream_name,
MplexFlag.MESSAGE,
data_with_lines)
reader_mock.feed_data(encoded_message)
i = 0
async for line in stream:
print(line, i, len(chunked_data))
assert line == chunked_data[i] + b"\n"
i += 1
if i > len(chunked_data):
break
with pytest.raises(RuntimeError):
async for line in stream:
print(line)
async def test_multiplex_empty_name():
ip, port = ("127.0.0.1", 7777)
reader_mock, writer_mock = get_connection_mock(ip, port)
with patch("asyncio.open_connection",
return_value=(reader_mock, writer_mock)):
async with open_multiplexer_context(ip, port) as multiplexer:
with pytest.raises(ValueError):
stream = await multiplexer.multiplex("")
async def test_multiplexer_contextmanager(mock: AsyncMock):
ip, port = ("127.0.0.1", 7777)
reader_mock, writer_mock = get_connection_mock(ip, port)
mock.return_value = (reader_mock, writer_mock)
async with open_multiplexer_context(ip, port) as multiplexer:
mock.assert_awaited_with(ip, port)
assert isinstance(multiplexer, Multiplexer)
writer_mock.write_eof.assert_called()
writer_mock.wait_closed.assert_awaited()
async def test_open_multiplex_twice(mock: AsyncMock):
ip, port = ("127.0.0.1", 7777)
mock.return_value = get_connection_mock(ip, port)
async with open_multiplexer_context(ip, port) as multiplexer:
first_stream = await multiplexer.multiplex("stream.1")
with pytest.raises(ValueError):
second_stream = await multiplexer.multiplex("stream.1")
await first_stream.close()
second_stream = await multiplexer.multiplex("stream.1")
async def test_write_to_stream(data: bytes):
ip, port = ("127.0.0.1", 7777)
reader_mock, writer_mock = get_connection_mock(ip, port)
with patch("asyncio.open_connection",
return_value=(reader_mock, writer_mock)):
async with open_multiplexer_context(ip, port) as multiplexer:
stream_name = "stream.1"
stream = await multiplexer.multiplex(stream_name)
await stream.write(data)
encoded_message = get_encoded_message(stream_name,
MplexFlag.MESSAGE, data)
writer_mock.write.assert_called_with(encoded_message)
async def test_read_invalid_flag():
ip, port = ("127.0.0.1", 7777)
reader_mock, writer_mock = get_connection_mock(ip, port)
with patch("asyncio.open_connection",
return_value=(reader_mock, writer_mock)):
async with open_multiplexer_context(ip, port) as multiplexer:
stream_name = "stream.1"
stream = await multiplexer.multiplex(stream_name)
encoded_message = get_encoded_message(stream_name, 4, b"data")
reader_mock.feed_data(encoded_message)
with pytest.raises(asyncio.TimeoutError):
await asyncio.wait_for(stream.read(1), timeout=0.05)
async def test_read_zero_from_stream(mock: AsyncMock):
ip, port = ("127.0.0.1", 7777)
reader_mock, writer_mock = get_connection_mock(ip, port)
mock.return_value = (reader_mock, writer_mock)
async with open_multiplexer_context(ip, port) as multiplexer:
stream_name = "stream.1"
stream = await multiplexer.multiplex(stream_name)
encoded_message = get_encoded_message(stream_name, MplexFlag.MESSAGE,
b"data")
reader_mock.feed_data(encoded_message)
read_data = await asyncio.wait_for(stream.read(0), timeout=0.05)
assert read_data == b""
async def test_multiplex_one(stream_name: StreamName):
ip, port = ("127.0.0.1", 7777)
reader_mock, writer_mock = get_connection_mock(ip, port)
with patch("asyncio.open_connection",
return_value=(reader_mock, writer_mock)):
async with open_multiplexer_context(ip, port) as multiplexer:
stream = await multiplexer.multiplex(stream_name)
assert isinstance(stream, Stream)
assert stream.ip == ip
assert stream.port == port
assert stream.name == stream_name
assert not stream.is_closed()
encoded_message = get_encoded_message(stream_name,
MplexFlag.NEW_STREAM,
stream_name.encode())
writer_mock.write.assert_called_with(encoded_message)
async def test_readline(data: bytes):
ip, port = ("127.0.0.1", 7777)
reader_mock, writer_mock = get_connection_mock(ip, port)
with patch("asyncio.open_connection",
return_value=(reader_mock, writer_mock)):
async with open_multiplexer_context(ip, port) as multiplexer:
stream_name = "stream.1"
stream = await multiplexer.multiplex(stream_name)
data = data + b"\n" + data
encoded_message = get_encoded_message(stream_name,
MplexFlag.MESSAGE, data)
reader_mock.feed_data(encoded_message)
assert await stream.readline() == data.split(b"\n")[0] + b"\n"
with pytest.raises(RuntimeError):
await stream.readline()
async def test_read_until_close():
ip, port = ("127.0.0.1", 7777)
reader_mock, writer_mock = get_connection_mock(ip, port)
with patch("asyncio.open_connection",
return_value=(reader_mock, writer_mock)):
async with open_multiplexer_context(ip, port) as multiplexer:
stream_name = "stream.1"
stream = await multiplexer.multiplex(stream_name)
data = b"data"
encoded_message = get_encoded_message(stream_name,
MplexFlag.MESSAGE, data)
reader_mock.feed_data(encoded_message)
encoded_message = get_encoded_message(stream_name, MplexFlag.CLOSE,
b"")
reader_mock.feed_data(encoded_message)
read_data = await asyncio.wait_for(stream.read(), timeout=0.05)
assert read_data == data
async def test_readexactly(data: bytes):
ip, port = ("127.0.0.1", 7777)
reader_mock, writer_mock = get_connection_mock(ip, port)
with patch("asyncio.open_connection",
return_value=(reader_mock, writer_mock)):
async with open_multiplexer_context(ip, port) as multiplexer:
stream_name = "stream.1"
stream = await multiplexer.multiplex(stream_name)
read_amount = random.randint(0, len(data) - 1)
encoded_message = get_encoded_message(stream_name,
MplexFlag.MESSAGE, data)
reader_mock.feed_data(encoded_message)
assert await stream.readexactly(read_amount) == data[:read_amount]
with pytest.raises(RuntimeError):
await stream.readexactly(read_amount)
async def test_read_from_one_stream(data: StreamData):
ip, port = ("127.0.0.1", 7777)
reader_mock, writer_mock = get_connection_mock(ip, port)
with patch("asyncio.open_connection",
return_value=(reader_mock, writer_mock)):
async with open_multiplexer_context(ip, port) as multiplexer:
stream_name = "stream.1"
stream = await multiplexer.multiplex(stream_name)
encoded_message = get_encoded_message(stream_name,
MplexFlag.MESSAGE, data)
reader_mock.feed_data(encoded_message)
read_amount = min(random.randint(1, 10),
len(data)) # read every 'read_amount' bytes
for i in range(len(data) // read_amount):
read_data = await asyncio.wait_for(stream.read(read_amount),
timeout=1)
assert (read_data == data[i * read_amount:(i * read_amount) +
read_amount])
async def test_read_from_multiple_streams(stream_names: List[StreamName],
data: StreamData):
ip, port = ("127.0.0.1", 7777)
reader_mock, writer_mock = get_connection_mock(ip, port)
with patch("asyncio.open_connection",
return_value=(reader_mock, writer_mock)):
async with open_multiplexer_context(ip, port) as multiplexer:
streams = {
stream_name: await multiplexer.multiplex(stream_name)
for stream_name in stream_names
}
receiver, non_receiver = random.sample(stream_names, k=2)
encoded_message = get_encoded_message(receiver, MplexFlag.MESSAGE,
data)
reader_mock.feed_data(encoded_message)
with pytest.raises(asyncio.TimeoutError):
await asyncio.wait_for(streams[non_receiver].read(1),
timeout=0.05)
assert await streams[receiver].read(len(data)) == data
async def test_readuntil(data: bytes):
ip, port = ("127.0.0.1", 7777)
reader_mock, writer_mock = get_connection_mock(ip, port)
with patch("asyncio.open_connection",
return_value=(reader_mock, writer_mock)):
async with open_multiplexer_context(ip, port) as multiplexer:
stream_name = "stream.1"
stream = await multiplexer.multiplex(stream_name)
separator_index = random.randint(0, len(data) - 1)
separator = data[separator_index:separator_index + 1]
encoded_message = get_encoded_message(stream_name,
MplexFlag.MESSAGE, data)
reader_mock.feed_data(encoded_message)
assert (await
stream.readuntil(separator) == data.split(separator)[0] +
separator)
with pytest.raises(RuntimeError):
await stream.readuntil(separator)
async def test_read_close_flag():
ip, port = ("127.0.0.1", 7777)
reader_mock, writer_mock = get_connection_mock(ip, port)
with patch("asyncio.open_connection",
return_value=(reader_mock, writer_mock)):
async with open_multiplexer_context(ip, port) as multiplexer:
stream_name = "stream.1"
stream = await multiplexer.multiplex(stream_name)
encoded_message = get_encoded_message(stream_name, MplexFlag.CLOSE,
b"")
reader_mock.feed_data(encoded_message)
await asyncio.sleep(0.05)
# 'read' must be first so that it gives control back to event_loop
with pytest.raises(RuntimeError):
await stream.close()
with pytest.raises(RuntimeError):
await stream.write(b"data")
with pytest.raises(RuntimeError):
await asyncio.wait_for(stream.read(1), timeout=0.05)
async def test_close_stream(mock: AsyncMock):
ip, port = ("127.0.0.1", 7777)
reader_mock, writer_mock = get_connection_mock(ip, port)
mock.return_value = (reader_mock, writer_mock)
async with open_multiplexer_context(ip, port) as multiplexer:
stream_name = "stream.1"
stream = await multiplexer.multiplex(stream_name)
await stream.close()
encoded_message = get_encoded_message(stream_name, MplexFlag.CLOSE,
stream_name.encode())
writer_mock.write.assert_called_with(encoded_message)
assert stream.is_closed()
with pytest.raises(RuntimeError):
await stream.close()
with pytest.raises(RuntimeError):
await asyncio.wait_for(stream.read(1), timeout=0.05)
with pytest.raises(RuntimeError):
await stream.write(b"data")