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#############################################################################
##
## Copyright (C) 2021 The Qt Company Ltd.
## Contact: https://www.qt.io/licensing/
##
## This file is part of the test suite of Qt for Python.
##
## $QT_BEGIN_LICENSE:GPL-EXCEPT$
## Commercial License Usage
## Licensees holding valid commercial Qt licenses may use this file in
## accordance with the commercial license agreement provided with the
## Software or, alternatively, in accordance with the terms contained in
## a written agreement between you and The Qt Company. For licensing terms
## and conditions see https://www.qt.io/terms-conditions. For further
## information use the contact form at https://www.qt.io/contact-us.
##
## GNU General Public License Usage
## Alternatively, this file may be used under the terms of the GNU
## General Public License version 3 as published by the Free Software
## Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
## included in the packaging of this file. Please review the following
## information to ensure the GNU General Public License requirements will
## be met: https://www.gnu.org/licenses/gpl-3.0.html.
##
## $QT_END_LICENSE$
##
#############################################################################
'''Unit tests for QSharedMemory'''
import ctypes
import os
import subprocess
import sys
import unittest
from pathlib import Path
FILE = Path(__file__).resolve()
sys.path.append(os.fspath(FILE.parents[1]))
from init_paths import init_test_paths
init_test_paths(False)
from PySide6.QtCore import QSharedMemory, QRandomGenerator, qVersion
from qsharedmemory_client import read_string
TEST_STRING = 'ABCD'
def run(cmd):
# FIXME Python 3.7: Use subprocess.run()
proc = subprocess.Popen(cmd, stdout=subprocess.PIPE, shell=False,
universal_newlines=True)
output, error = proc.communicate()
proc.wait()
return_code = proc.returncode
return (return_code, output, error)
class QSharedMemoryTest(unittest.TestCase):
def setUp(self):
r = QRandomGenerator.global_().bounded(1000)
v = qVersion()
self._name = f"pyside{v}_test_{r}"
print(self._name)
self._shared_memory = QSharedMemory(self._name)
def tearDown(self):
if self._shared_memory.isAttached():
self._shared_memory.detach()
def test(self):
# Create and write
self.assertTrue(self._shared_memory.create(1024, QSharedMemory.ReadWrite))
self.assertTrue(self._shared_memory.lock())
mv = memoryview(self._shared_memory.data())
for idx, c in enumerate(TEST_STRING + chr(0)):
mv[idx] = ord(c)
mv = None
self.assertTrue(self._shared_memory.unlock())
# Read
self.assertTrue(self._shared_memory.lock())
self.assertEqual(read_string(self._shared_memory), TEST_STRING)
self.assertTrue(self._shared_memory.unlock())
# Run a subprocess and let it read
client = FILE.parent / 'qsharedmemory_client.py'
returncode, output, error = run([sys.executable, client, self._name])
if error:
print(error, file=sys.stderr)
self.assertEqual(returncode, 0)
self.assertEqual(output, TEST_STRING)
if __name__ == '__main__':
unittest.main()
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