rnsh/tests/test_process.py
2023-02-11 11:22:03 -06:00

77 lines
2.3 KiB
Python

import uuid
import time
from types import TracebackType
from typing import Type
import pytest
import rnsh.process
import contextlib
import asyncio
import logging
import os
import threading
logging.getLogger().setLevel(logging.DEBUG)
class State(contextlib.AbstractContextManager):
def __init__(self, argv: [str], loop: asyncio.AbstractEventLoop, env: dict = None):
self.process: rnsh.process.CallbackSubprocess
self.loop = loop
self.env = env or os.environ.copy()
self.argv = argv
self._lock = threading.RLock()
self._stdout = bytearray()
self.return_code: int = None
self.process = rnsh.process.CallbackSubprocess(argv=self.argv,
env=self.env,
loop=self.loop,
stdout_callback=self._stdout_cb,
terminated_callback=self._terminated_cb)
def _stdout_cb(self, data):
with self._lock:
self._stdout.extend(data)
def read(self):
with self._lock:
data = self._stdout.copy()
self._stdout.clear()
return data
def _terminated_cb(self, rc):
self.return_code = rc
def start(self):
self.process.start()
def cleanup(self):
if self.process and self.process.running:
self.process.terminate(kill_delay=0.1)
def __exit__(self, __exc_type: Type[BaseException], __exc_value: BaseException,
__traceback: TracebackType) -> bool:
self.cleanup()
return False
@pytest.mark.skip_ci
@pytest.mark.asyncio
async def test_echo():
"""
Echoing some text through cat.
"""
loop = asyncio.get_running_loop()
with State(argv=["/bin/cat"],
loop=loop) as state:
state.start()
assert state.process is not None
assert state.process.running
message = "test\n"
state.process.write(message.encode("utf-8"))
await asyncio.sleep(0.1)
data = state.read()
state.process.write(rnsh.process.CTRL_D)
await asyncio.sleep(0.1)
assert len(data) > 0
decoded = data.decode("utf-8")
assert decoded == message.replace("\n", "\r\n") * 2
assert not state.process.running