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#!/usr/bin/env python3
# SPDX-License-Identifier: Apache-2.0
# Copyright 2018 The Meson development team
import os
import tempfile
import unittest
import subprocess
import zipapp
import sysconfig
from pathlib import Path
from mesonbuild.mesonlib import windows_proof_rmtree, python_command, is_windows
from mesonbuild.coredata import version as meson_version
scheme = None
def needs_debian_path_hack():
try:
import setuptools
return int(setuptools.__version__.split('.')[0]) < 65
except ModuleNotFoundError:
return False
if needs_debian_path_hack():
# Handle the scheme that Debian patches in the as default
# This function was renamed and made public in Python 3.10
if hasattr(sysconfig, 'get_default_scheme'):
scheme = sysconfig.get_default_scheme()
else:
scheme = sysconfig._get_default_scheme()
if scheme == 'posix_local':
scheme = 'posix_prefix'
def get_pypath():
if scheme:
pypath = sysconfig.get_path('purelib', scheme=scheme, vars={'base': ''})
else:
pypath = sysconfig.get_path('purelib', vars={'base': ''})
# Ensure that / is the path separator and not \, then strip /
return Path(pypath).as_posix().strip('/')
def get_pybindir():
# 'Scripts' on Windows and 'bin' on other platforms including MSYS
if scheme:
return sysconfig.get_path('scripts', scheme=scheme, vars={'base': ''}).strip('\\/')
return sysconfig.get_path('scripts', vars={'base': ''}).strip('\\/')
class CommandTests(unittest.TestCase):
'''
Test that running meson in various ways works as expected by checking the
value of mesonlib.meson_command that was set during configuration.
'''
def setUp(self):
super().setUp()
self.orig_env = os.environ.copy()
self.orig_dir = os.getcwd()
os.environ['MESON_COMMAND_TESTS'] = '1'
self.tmpdir = Path(tempfile.mkdtemp()).resolve()
self.src_root = Path(__file__).resolve().parent
self.testdir = str(self.src_root / 'test cases/common/1 trivial')
self.meson_args = ['--backend=ninja']
def tearDown(self):
try:
windows_proof_rmtree(str(self.tmpdir))
except FileNotFoundError:
pass
os.environ.clear()
os.environ.update(self.orig_env)
os.chdir(str(self.orig_dir))
super().tearDown()
def _run(self, command, workdir=None, env=None):
'''
Run a command while printing the stdout, and also return a copy of it
'''
# If this call hangs CI will just abort. It is very hard to distinguish
# between CI issue and test bug in that case. Set timeout and fail loud
# instead.
p = subprocess.run(command, stdout=subprocess.PIPE,
env=env, text=True,
cwd=workdir, timeout=60 * 5)
print(p.stdout)
if p.returncode != 0:
raise subprocess.CalledProcessError(p.returncode, command)
return p.stdout
def assertMesonCommandIs(self, line, cmd):
self.assertTrue(line.startswith('meson_command '), msg=line)
self.assertEqual(line, f'meson_command is {cmd!r}')
def test_meson_uninstalled(self):
# This is what the meson command must be for all these cases
resolved_meson_command = python_command + [str(self.src_root / 'meson.py')]
# Absolute path to meson.py
os.chdir('/')
builddir = str(self.tmpdir / 'build1')
meson_py = str(self.src_root / 'meson.py')
meson_setup = [meson_py, 'setup']
meson_command = python_command + meson_setup + self.meson_args
stdo = self._run(meson_command + [self.testdir, builddir])
self.assertMesonCommandIs(stdo.split('\n')[0], resolved_meson_command)
# ./meson.py
os.chdir(str(self.src_root))
builddir = str(self.tmpdir / 'build2')
meson_py = './meson.py'
meson_setup = [meson_py, 'setup']
meson_command = python_command + meson_setup + self.meson_args
stdo = self._run(meson_command + [self.testdir, builddir])
self.assertMesonCommandIs(stdo.split('\n')[0], resolved_meson_command)
# Symlink to meson.py
if is_windows():
# Symlinks require admin perms
return
os.chdir(str(self.src_root))
builddir = str(self.tmpdir / 'build3')
# Create a symlink to meson.py in bindir, and add it to PATH
bindir = (self.tmpdir / 'bin')
bindir.mkdir()
(bindir / 'meson').symlink_to(self.src_root / 'meson.py')
(bindir / 'python3').symlink_to(python_command[0])
os.environ['PATH'] = str(bindir) + os.pathsep + os.environ['PATH']
# use our overridden PATH-compatible python
path_resolved_meson_command = [str(bindir / 'meson')]
# See if it works!
meson_py = 'meson'
meson_setup = [meson_py, 'setup']
meson_command = meson_setup + self.meson_args
stdo = self._run(meson_command + [self.testdir, builddir])
self.assertMesonCommandIs(stdo.split('\n')[0], path_resolved_meson_command)
def test_meson_installed(self):
# Install meson
prefix = self.tmpdir / 'prefix'
pylibdir = prefix / get_pypath()
bindir = prefix / get_pybindir()
pylibdir.mkdir(parents=True)
# XXX: join with empty name so it always ends with os.sep otherwise
# distutils complains that prefix isn't contained in PYTHONPATH
os.environ['PYTHONPATH'] = os.path.join(str(pylibdir), '')
os.environ['PATH'] = str(bindir) + os.pathsep + os.environ['PATH']
self._run(python_command + ['setup.py', 'install', '--prefix', str(prefix)])
# Fix importlib-metadata by appending all dirs in pylibdir
PYTHONPATHS = [pylibdir] + [x for x in pylibdir.iterdir()]
PYTHONPATHS = [os.path.join(str(x), '') for x in PYTHONPATHS]
os.environ['PYTHONPATH'] = os.pathsep.join(PYTHONPATHS)
# Check that all the files were installed correctly
self.assertTrue(bindir.is_dir())
self.assertTrue(pylibdir.is_dir())
# Run `meson`
os.chdir('/')
resolved_meson_command = [str(bindir / 'meson')]
builddir = str(self.tmpdir / 'build1')
meson_setup = ['meson', 'setup']
meson_command = meson_setup + self.meson_args
stdo = self._run(meson_command + [self.testdir, builddir])
self.assertMesonCommandIs(stdo.split('\n')[0], resolved_meson_command)
# Run `/path/to/meson`
builddir = str(self.tmpdir / 'build2')
meson_setup = [str(bindir / 'meson'), 'setup']
meson_command = meson_setup + self.meson_args
stdo = self._run(meson_command + [self.testdir, builddir])
self.assertMesonCommandIs(stdo.split('\n')[0], resolved_meson_command)
# Run `python3 -m mesonbuild.mesonmain`
resolved_meson_command = python_command + ['-m', 'mesonbuild.mesonmain']
builddir = str(self.tmpdir / 'build3')
meson_setup = ['-m', 'mesonbuild.mesonmain', 'setup']
meson_command = python_command + meson_setup + self.meson_args
stdo = self._run(meson_command + [self.testdir, builddir])
self.assertMesonCommandIs(stdo.split('\n')[0], resolved_meson_command)
if is_windows():
# Next part requires a shell
return
# `meson` is a wrapper to `meson.real`
resolved_meson_command = [str(bindir / 'meson.real')]
builddir = str(self.tmpdir / 'build4')
(bindir / 'meson').rename(bindir / 'meson.real')
wrapper = (bindir / 'meson')
wrapper.write_text('#!/bin/sh\n\nmeson.real "$@"', encoding='utf-8')
wrapper.chmod(0o755)
meson_setup = [str(wrapper), 'setup']
meson_command = meson_setup + self.meson_args
stdo = self._run(meson_command + [self.testdir, builddir])
self.assertMesonCommandIs(stdo.split('\n')[0], resolved_meson_command)
def test_meson_exe_windows(self):
raise unittest.SkipTest('NOT IMPLEMENTED')
def test_meson_zipapp(self):
if is_windows():
raise unittest.SkipTest('NOT IMPLEMENTED')
source = Path(__file__).resolve().parent
target = self.tmpdir / 'meson.pyz'
script = source / 'packaging' / 'create_zipapp.py'
self._run([script.as_posix(), source, '--outfile', target, '--interpreter', python_command[0]])
self._run([target.as_posix(), '--help'])
def test_meson_runpython(self):
meson_command = str(self.src_root / 'meson.py')
script_file = str(self.src_root / 'foo.py')
test_command = 'import sys; print(sys.argv[1])'
env = os.environ.copy()
del env['MESON_COMMAND_TESTS']
with open(script_file, 'w') as f:
f.write('#!/usr/bin/env python3\n\n')
f.write(f'{test_command}\n')
for cmd in [['-c', test_command, 'fake argument'], [script_file, 'fake argument']]:
pyout = self._run(python_command + cmd)
mesonout = self._run(python_command + [meson_command, 'runpython'] + cmd, env=env)
self.assertEqual(pyout, mesonout)
if __name__ == '__main__':
print('Meson build system', meson_version, 'Command Tests')
raise SystemExit(unittest.main(buffer=True))
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