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Fixing #659 (output cutoff and iopub timeout) #994

merged 16 commits into from May 17, 2019
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Just for now

add a couple deadline tests

  • Loading branch information
djherbis committed May 2, 2019
commit c08e527a8a7dbe20bdd195db6db966ee1671460e
@@ -7,9 +7,9 @@
from textwrap import dedent
from contextlib import contextmanager
from time import monotonic
from time import monotonic # Py 3
except ImportError:
from time import time as monotonic
from time import time as monotonic # Py 2

from queue import Empty # Py 3
@@ -526,6 +526,7 @@ def run_cell(self, cell, cell_index=0):
parent_msg_id = self.kc.execute(cell.source)
self.log.debug("Executing cell:\n%s", cell.source)
exec_timeout = self._get_timeout(cell)
deadline = None
if exec_timeout is not None:
deadline = monotonic() + exec_timeout

@@ -31,6 +31,10 @@
from testpath import modified_env
from ipython_genutils.py3compat import string_types

from queue import Queue # Py 3
except ImportError:
from Queue import Queue # Py2
TimeoutError # Py 3
except NameError:
@@ -507,6 +511,28 @@ def test_busy_message(self, preprocessor, cell_mock, message_mock):
# Ensure no outputs were generated
assert cell_mock.outputs == []

def test_deadline_exec_reply(self, preprocessor, cell_mock, message_mock):
q = Queue()
# Both channels will never receive, so we expect to hit the timeout.
preprocessor.kc.shell_channel.get_msg = lambda timeout=0 : q.get(timeout=timeout)
preprocessor.kc.iopub_channel.get_msg = lambda timeout=0 : q.get(timeout=timeout)
preprocessor.timeout = 1

with pytest.raises(TimeoutError):

def test_deadline_iopub(self, preprocessor, cell_mock, message_mock):
q = Queue()
# The shell_channel will complete, so we expect only to hit the iopub timeout.
preprocessor.kc.iopub_channel.get_msg = lambda timeout=0 : q.get(timeout=timeout)
preprocessor.iopub_timeout = 1
preprocessor.raise_on_iopub_timeout = True

with pytest.raises(RuntimeError):

'msg_type': 'execute_input',
'header': {'msg_type': 'execute_input'},
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