mirror of
https://github.com/python/cpython.git
synced 2026-05-12 15:39:22 -04:00
Serhiy Storchaka
76f52196b9
Only mark tests which spend significant system or user time,
by itself or in subprocesses.
(cherry picked from commit f3ba0a74cd)
106 lines
3.6 KiB
Python
106 lines
3.6 KiB
Python
# gh-91321: Build a basic C++ test extension to check that the Python C API is
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# compatible with C++ and does not emit C++ compiler warnings.
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import os.path
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import sys
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import unittest
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import subprocess
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import sysconfig
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from test import support
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from test.support import os_helper
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MS_WINDOWS = (sys.platform == 'win32')
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SETUP = os.path.join(os.path.dirname(__file__), 'setup.py')
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@support.requires_subprocess()
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class TestCPPExt(unittest.TestCase):
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@support.requires_resource('cpu')
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def test_build_cpp11(self):
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self.check_build(False, '_testcpp11ext')
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@support.requires_resource('cpu')
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def test_build_cpp03(self):
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self.check_build(True, '_testcpp03ext')
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# With MSVC, the linker fails with: cannot open file 'python311.lib'
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# https://github.com/python/cpython/pull/32175#issuecomment-1111175897
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@unittest.skipIf(MS_WINDOWS, 'test fails on Windows')
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# Building and running an extension in clang sanitizing mode is not
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# straightforward
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@unittest.skipIf(
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'-fsanitize' in (sysconfig.get_config_var('PY_CFLAGS') or ''),
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'test does not work with analyzing builds')
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# the test uses venv+pip: skip if it's not available
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@support.requires_venv_with_pip()
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def check_build(self, std_cpp03, extension_name):
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# Build in a temporary directory
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with os_helper.temp_cwd():
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self._check_build(std_cpp03, extension_name)
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def _check_build(self, std_cpp03, extension_name):
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venv_dir = 'env'
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verbose = support.verbose
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# Create virtual environment to get setuptools
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cmd = [sys.executable, '-X', 'dev', '-m', 'venv', venv_dir]
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if verbose:
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print()
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print('Run:', ' '.join(cmd))
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subprocess.run(cmd, check=True)
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# Get the Python executable of the venv
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python_exe = 'python'
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if sys.executable.endswith('.exe'):
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python_exe += '.exe'
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if MS_WINDOWS:
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python = os.path.join(venv_dir, 'Scripts', python_exe)
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else:
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python = os.path.join(venv_dir, 'bin', python_exe)
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def run_cmd(operation, cmd):
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if verbose:
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print('Run:', ' '.join(cmd))
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subprocess.run(cmd, check=True)
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else:
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proc = subprocess.run(cmd,
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stdout=subprocess.PIPE,
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stderr=subprocess.STDOUT,
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text=True)
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if proc.returncode:
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print(proc.stdout, end='')
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self.fail(
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f"{operation} failed with exit code {proc.returncode}")
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# Build the C++ extension
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cmd = [python, '-X', 'dev',
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SETUP, 'build_ext', '--verbose']
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if std_cpp03:
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cmd.append('-std=c++03')
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run_cmd('Build', cmd)
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# Install the C++ extension
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cmd = [python, '-X', 'dev',
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SETUP, 'install']
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run_cmd('Install', cmd)
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# Do a reference run. Until we test that running python
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# doesn't leak references (gh-94755), run it so one can manually check
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# -X showrefcount results against this baseline.
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cmd = [python,
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'-X', 'dev',
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'-X', 'showrefcount',
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'-c', 'pass']
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run_cmd('Reference run', cmd)
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# Import the C++ extension
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cmd = [python,
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'-X', 'dev',
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'-X', 'showrefcount',
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'-c', f"import {extension_name}"]
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run_cmd('Import', cmd)
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if __name__ == "__main__":
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unittest.main()
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