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test_ipython.py
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test_ipython.py
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from unittest import mock
import pytest
from tlz import first
import tornado
from distributed import Client
from distributed.utils_test import cluster, mock_ipython
from distributed.utils_test import loop, zmq_ctx # noqa F401
def need_functional_ipython(func):
try:
import ipykernel # noqa: F401
import jupyter_client # noqa: F401
except ImportError:
return pytest.mark.skip("need ipykernel and jupyter_client installed")(func)
if tornado.version_info >= (5,):
# https://github.com/ipython/ipykernel/issues/277
return pytest.mark.skip("IPython kernel broken with Tornado 5")(func)
else:
return func
@pytest.mark.ipython
@need_functional_ipython
def test_start_ipython_workers(loop, zmq_ctx):
from jupyter_client import BlockingKernelClient
with cluster(1) as (s, [a]):
with Client(s["address"], loop=loop) as e:
info_dict = e.start_ipython_workers()
info = first(info_dict.values())
key = info.pop("key")
kc = BlockingKernelClient(**info)
kc.session.key = key
kc.start_channels()
kc.wait_for_ready(timeout=10)
msg_id = kc.execute("worker")
reply = kc.get_shell_msg(timeout=10)
assert reply["parent_header"]["msg_id"] == msg_id
assert reply["content"]["status"] == "ok"
kc.stop_channels()
@pytest.mark.ipython
@need_functional_ipython
def test_start_ipython_scheduler(loop, zmq_ctx):
from jupyter_client import BlockingKernelClient
with cluster(1) as (s, [a]):
with Client(s["address"], loop=loop) as e:
info = e.start_ipython_scheduler()
key = info.pop("key")
kc = BlockingKernelClient(**info)
kc.session.key = key
kc.start_channels()
msg_id = kc.execute("scheduler")
reply = kc.get_shell_msg(timeout=10)
kc.stop_channels()
@pytest.mark.ipython
@need_functional_ipython
def test_start_ipython_scheduler_magic(loop, zmq_ctx):
with cluster(1) as (s, [a]):
with Client(s["address"], loop=loop) as e, mock_ipython() as ip:
info = e.start_ipython_scheduler()
expected = [
{"magic_kind": "line", "magic_name": "scheduler"},
{"magic_kind": "cell", "magic_name": "scheduler"},
]
call_kwargs_list = [
kwargs for (args, kwargs) in ip.register_magic_function.call_args_list
]
assert call_kwargs_list == expected
magic = ip.register_magic_function.call_args_list[0][0][0]
magic(line="", cell="scheduler")
@pytest.mark.ipython
@need_functional_ipython
def test_start_ipython_workers_magic(loop, zmq_ctx):
with cluster(2) as (s, [a, b]):
with Client(s["address"], loop=loop) as e, mock_ipython() as ip:
workers = list(e.nthreads())[:2]
names = ["magic%i" % i for i in range(len(workers))]
info_dict = e.start_ipython_workers(workers, magic_names=names)
expected = [
{"magic_kind": "line", "magic_name": "remote"},
{"magic_kind": "cell", "magic_name": "remote"},
{"magic_kind": "line", "magic_name": "magic0"},
{"magic_kind": "cell", "magic_name": "magic0"},
{"magic_kind": "line", "magic_name": "magic1"},
{"magic_kind": "cell", "magic_name": "magic1"},
]
call_kwargs_list = [
kwargs for (args, kwargs) in ip.register_magic_function.call_args_list
]
assert call_kwargs_list == expected
assert ip.register_magic_function.call_count == 6
magics = [args[0][0] for args in ip.register_magic_function.call_args_list[2:]]
magics[-1](line="", cell="worker")
[m.client.stop_channels() for m in magics]
@pytest.mark.ipython
@need_functional_ipython
def test_start_ipython_workers_magic_asterix(loop, zmq_ctx):
with cluster(2) as (s, [a, b]):
with Client(s["address"], loop=loop) as e, mock_ipython() as ip:
workers = list(e.nthreads())[:2]
info_dict = e.start_ipython_workers(workers, magic_names="magic_*")
expected = [
{"magic_kind": "line", "magic_name": "remote"},
{"magic_kind": "cell", "magic_name": "remote"},
{"magic_kind": "line", "magic_name": "magic_0"},
{"magic_kind": "cell", "magic_name": "magic_0"},
{"magic_kind": "line", "magic_name": "magic_1"},
{"magic_kind": "cell", "magic_name": "magic_1"},
]
call_kwargs_list = [
kwargs for (args, kwargs) in ip.register_magic_function.call_args_list
]
assert call_kwargs_list == expected
assert ip.register_magic_function.call_count == 6
magics = [args[0][0] for args in ip.register_magic_function.call_args_list[2:]]
magics[-1](line="", cell="worker")
[m.client.stop_channels() for m in magics]
@pytest.mark.ipython
@need_functional_ipython
def test_start_ipython_remote(loop, zmq_ctx):
from distributed._ipython_utils import remote_magic
with cluster(1) as (s, [a]):
with Client(s["address"], loop=loop) as e, mock_ipython() as ip:
worker = first(e.nthreads())
ip.user_ns["info"] = e.start_ipython_workers(worker)[worker]
remote_magic("info 1") # line magic
remote_magic("info", "worker") # cell magic
expected = [
((remote_magic,), {"magic_kind": "line", "magic_name": "remote"}),
((remote_magic,), {"magic_kind": "cell", "magic_name": "remote"}),
]
assert ip.register_magic_function.call_args_list == expected
assert ip.register_magic_function.call_count == 2
@pytest.mark.ipython
@need_functional_ipython
def test_start_ipython_qtconsole(loop):
Popen = mock.Mock()
with cluster() as (s, [a, b]):
with mock.patch("distributed._ipython_utils.Popen", Popen), Client(
s["address"], loop=loop
) as e:
worker = first(e.nthreads())
e.start_ipython_workers(worker, qtconsole=True)
e.start_ipython_workers(worker, qtconsole=True, qtconsole_args=["--debug"])
assert Popen.call_count == 2
(cmd,), kwargs = Popen.call_args_list[0]
assert cmd[:3] == ["jupyter", "qtconsole", "--existing"]
(cmd,), kwargs = Popen.call_args_list[1]
assert cmd[-1:] == ["--debug"]