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# Copyright 2019 the gRPC authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Test for multiprocessing example."""
import ast
import logging
import math
import os
import re
import subprocess
import tempfile
import unittest
_BINARY_DIR = os.path.realpath(
os.path.join(os.path.dirname(os.path.abspath(__file__)), '..'))
_SERVER_PATH = os.path.join(_BINARY_DIR, 'server')
_CLIENT_PATH = os.path.join(_BINARY_DIR, 'client')
def is_prime(n):
for i in range(2, int(math.ceil(math.sqrt(n)))):
if n % i == 0:
return False
else:
return True
def _get_server_address(server_stream):
while True:
server_stream.seek(0)
line = server_stream.readline()
while line:
matches = re.search('Binding to \'(.+)\'', line)
if matches is not None:
return matches.groups()[0]
line = server_stream.readline()
class MultiprocessingExampleTest(unittest.TestCase):
def test_multiprocessing_example(self):
server_stdout = tempfile.TemporaryFile(mode='r')
server_process = subprocess.Popen((_SERVER_PATH,), stdout=server_stdout)
server_address = _get_server_address(server_stdout)
client_stdout = tempfile.TemporaryFile(mode='r')
client_process = subprocess.Popen((
_CLIENT_PATH,
server_address,
),
stdout=client_stdout)
client_process.wait()
server_process.terminate()
client_stdout.seek(0)
results = ast.literal_eval(client_stdout.read().strip().split('\n')[-1])
values = tuple(result[0] for result in results)
self.assertSequenceEqual(range(2, 10000), values)
for result in results:
self.assertEqual(is_prime(result[0]), result[1])
if __name__ == '__main__':
logging.basicConfig()
unittest.main(verbosity=2)
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