"""Tests for kernel connection utilities"""
# Copyright (c) IPython Development Team.
# Distributed under the terms of the Modified BSD License.
import json
import os
from traitlets.config import Config
from ipython_genutils.tempdir import TemporaryDirectory, TemporaryWorkingDirectory
from ipython_genutils.py3compat import str_to_bytes
from ipykernel import connect
from ipykernel.kernelapp import IPKernelApp
sample_info = dict(ip='1.2.3.4', transport='ipc',
shell_port=1, hb_port=2, iopub_port=3, stdin_port=4, control_port=5,
key=b'abc123', signature_scheme='hmac-md5',
)
class DummyKernelApp(IPKernelApp):
def initialize(self, argv=[]):
self.init_profile_dir()
self.init_connection_file()
def test_get_connection_file():
cfg = Config()
with TemporaryWorkingDirectory() as d:
cfg.ProfileDir.location = d
cf = 'kernel.json'
app = DummyKernelApp(config=cfg, connection_file=cf)
app.initialize()
profile_cf = os.path.join(app.connection_dir, cf)
assert profile_cf == app.abs_connection_file
with open(profile_cf, 'w') as f:
f.write("{}")
assert os.path.exists(profile_cf)
assert connect.get_connection_file(app) == profile_cf
app.connection_file = cf
assert connect.get_connection_file(app) == profile_cf
def test_get_connection_info():
with TemporaryDirectory() as d:
cf = os.path.join(d, 'kernel.json')
connect.write_connection_file(cf, **sample_info)
json_info = connect.get_connection_info(cf)
info = connect.get_connection_info(cf, unpack=True)
assert isinstance(json_info, str)
sub_info = {k:v for k,v in info.items() if k in sample_info}
assert sub_info == sample_info
info2 = json.loads(json_info)
info2['key'] = str_to_bytes(info2['key'])
sub_info2 = {k:v for k,v in info.items() if k in sample_info}
assert sub_info2 == sample_info