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"""Tests for heartbeat thread"""
# Copyright (c) IPython Development Team.
# Distributed under the terms of the Modified BSD License.
import errno
from typing import no_type_check
from unittest.mock import patch
import pytest
import zmq
from ipykernel.heartbeat import Heartbeat
def test_port_bind_failure_raises():
heart = Heartbeat(None)
with patch.object(heart, "_try_bind_socket") as mock_try_bind:
mock_try_bind.side_effect = zmq.ZMQError(-100, "fails for unknown error types")
with pytest.raises(zmq.ZMQError):
heart._bind_socket()
assert mock_try_bind.call_count == 1
def test_port_bind_success():
heart = Heartbeat(None)
with patch.object(heart, "_try_bind_socket") as mock_try_bind:
heart._bind_socket()
assert mock_try_bind.call_count == 1
@no_type_check
def test_port_bind_failure_recovery():
try:
errno.WSAEADDRINUSE
except AttributeError:
# Fake windows address in-use code
errno.WSAEADDRINUSE = 12345
try:
heart = Heartbeat(None)
with patch.object(heart, "_try_bind_socket") as mock_try_bind:
mock_try_bind.side_effect = [
zmq.ZMQError(errno.EADDRINUSE, "fails for non-bind unix"),
zmq.ZMQError(errno.WSAEADDRINUSE, "fails for non-bind windows"),
] + [0] * 100
# Shouldn't raise anything as retries will kick in
heart._bind_socket()
finally:
# Cleanup fake assignment
if errno.WSAEADDRINUSE == 12345:
del errno.WSAEADDRINUSE
def test_port_bind_failure_gives_up_retries():
heart = Heartbeat(None)
with patch.object(heart, "_try_bind_socket") as mock_try_bind:
mock_try_bind.side_effect = zmq.ZMQError(errno.EADDRINUSE, "fails for non-bind")
with pytest.raises(zmq.ZMQError):
heart._bind_socket()
assert mock_try_bind.call_count == 100
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