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# THIS FILE IS PART OF THE CYLC WORKFLOW ENGINE.
# Copyright (C) NIWA & British Crown (Met Office) & Contributors.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import asyncio
import pytest
from cylc.flow import __version__ as CYLC_VERSION
from cylc.flow.network import deserialize
from cylc.flow.network.client import WorkflowRuntimeClient
from cylc.flow.scheduler import Scheduler
async def test_listener(one: Scheduler, start):
"""Test listener."""
async with start(one):
# Test listener handles an invalid message from client
# (without directly calling listener):
client = WorkflowRuntimeClient(one.workflow)
client.socket.send_string(r'Not JSON')
res = deserialize(
(await client.socket.recv()).decode()
)
assert res['error']
assert 'data' not in res
# Check other fields are present:
assert res['cylc_version'] == CYLC_VERSION
one.server.replier.queue.put('STOP')
async with asyncio.timeout(2):
# wait for the server to consume the STOP item from the queue
while not one.server.replier.queue.empty():
await asyncio.sleep(0.01)
# ensure the server is "closed"
one.server.replier.queue.put('foobar')
with pytest.raises(ValueError):
one.server.replier.listener()
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