1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
|
# gh-91321: Build a basic C++ test extension to check that the Python C API is
# compatible with C++ and does not emit C++ compiler warnings.
import os.path
import shlex
import shutil
import subprocess
import unittest
from test import support
SOURCE = os.path.join(os.path.dirname(__file__), 'extension.cpp')
SETUP = os.path.join(os.path.dirname(__file__), 'setup.py')
# With MSVC on a debug build, the linker fails with: cannot open file
# 'python311.lib', it should look 'python311_d.lib'.
@unittest.skipIf(support.MS_WINDOWS and support.Py_DEBUG,
'test fails on Windows debug build')
# Building and running an extension in clang sanitizing mode is not
# straightforward
@support.skip_if_sanitizer('test does not work with analyzing builds',
address=True, memory=True, ub=True, thread=True)
# the test uses venv+pip: skip if it's not available
@support.requires_venv_with_pip()
@support.requires_subprocess()
@support.requires_resource('cpu')
class TestCPPExt(unittest.TestCase):
def test_build(self):
self.check_build('_testcppext')
def test_build_cpp03(self):
self.check_build('_testcpp03ext', std='c++03')
@unittest.skipIf(support.MS_WINDOWS, "MSVC doesn't support /std:c++11")
def test_build_cpp11(self):
self.check_build('_testcpp11ext', std='c++11')
# Only test C++14 on MSVC.
# On s390x RHEL7, GCC 4.8.5 doesn't support C++14.
@unittest.skipIf(not support.MS_WINDOWS, "need Windows")
def test_build_cpp14(self):
self.check_build('_testcpp14ext', std='c++14')
def check_build(self, extension_name, std=None):
venv_dir = 'env'
with support.setup_venv_with_pip_setuptools_wheel(venv_dir) as python_exe:
self._check_build(extension_name, python_exe, std=std)
def _check_build(self, extension_name, python_exe, std):
pkg_dir = 'pkg'
os.mkdir(pkg_dir)
shutil.copy(SETUP, os.path.join(pkg_dir, os.path.basename(SETUP)))
shutil.copy(SOURCE, os.path.join(pkg_dir, os.path.basename(SOURCE)))
def run_cmd(operation, cmd):
env = os.environ.copy()
if std:
env['CPYTHON_TEST_CPP_STD'] = std
env['CPYTHON_TEST_EXT_NAME'] = extension_name
if support.verbose:
print('Run:', ' '.join(map(shlex.quote, cmd)))
subprocess.run(cmd, check=True, env=env)
else:
proc = subprocess.run(cmd,
env=env,
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT,
text=True)
if proc.returncode:
print('Run:', ' '.join(map(shlex.quote, cmd)))
print(proc.stdout, end='')
self.fail(
f"{operation} failed with exit code {proc.returncode}")
# Build and install the C++ extension
cmd = [python_exe, '-X', 'dev',
'-m', 'pip', 'install', '--no-build-isolation',
os.path.abspath(pkg_dir)]
run_cmd('Install', cmd)
# Do a reference run. Until we test that running python
# doesn't leak references (gh-94755), run it so one can manually check
# -X showrefcount results against this baseline.
cmd = [python_exe,
'-X', 'dev',
'-X', 'showrefcount',
'-c', 'pass']
run_cmd('Reference run', cmd)
# Import the C++ extension
cmd = [python_exe,
'-X', 'dev',
'-X', 'showrefcount',
'-c', f"import {extension_name}"]
run_cmd('Import', cmd)
if __name__ == "__main__":
unittest.main()
|
