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import subprocess
import os
import shutil
import unittest
import functools
import re
import typing as T
from pathlib import Path
from contextlib import contextmanager
from mesonbuild.compilers import detect_c_compiler, compiler_from_language
from mesonbuild.mesonlib import (
MachineChoice, is_osx, is_cygwin, EnvironmentException, OptionKey, MachineChoice,
OrderedSet
)
from run_tests import get_fake_env
def is_ci():
if os.environ.get('MESON_CI_JOBNAME') not in {None, 'thirdparty'}:
return True
return False
def skip_if_not_base_option(feature):
"""Skip tests if The compiler does not support a given base option.
for example, ICC doesn't currently support b_sanitize.
"""
def actual(f):
@functools.wraps(f)
def wrapped(*args, **kwargs):
env = get_fake_env()
cc = detect_c_compiler(env, MachineChoice.HOST)
key = OptionKey(feature)
if key not in cc.base_options:
raise unittest.SkipTest(
f'{feature} not available with {cc.id}')
return f(*args, **kwargs)
return wrapped
return actual
def skipIfNoPkgconfig(f):
'''
Skip this test if no pkg-config is found, unless we're on CI.
This allows users to run our test suite without having
pkg-config installed on, f.ex., macOS, while ensuring that our CI does not
silently skip the test because of misconfiguration.
Note: Yes, we provide pkg-config even while running Windows CI
'''
@functools.wraps(f)
def wrapped(*args, **kwargs):
if not is_ci() and shutil.which('pkg-config') is None:
raise unittest.SkipTest('pkg-config not found')
return f(*args, **kwargs)
return wrapped
def skipIfNoPkgconfigDep(depname):
'''
Skip this test if the given pkg-config dep is not found, unless we're on CI.
'''
def wrapper(func):
@functools.wraps(func)
def wrapped(*args, **kwargs):
if not is_ci() and shutil.which('pkg-config') is None:
raise unittest.SkipTest('pkg-config not found')
if not is_ci() and subprocess.call(['pkg-config', '--exists', depname]) != 0:
raise unittest.SkipTest(f'pkg-config dependency {depname} not found.')
return func(*args, **kwargs)
return wrapped
return wrapper
def skip_if_no_cmake(f):
'''
Skip this test if no cmake is found, unless we're on CI.
This allows users to run our test suite without having
cmake installed on, f.ex., macOS, while ensuring that our CI does not
silently skip the test because of misconfiguration.
'''
@functools.wraps(f)
def wrapped(*args, **kwargs):
if not is_ci() and shutil.which('cmake') is None:
raise unittest.SkipTest('cmake not found')
return f(*args, **kwargs)
return wrapped
def skip_if_not_language(lang: str):
def wrapper(func):
@functools.wraps(func)
def wrapped(*args, **kwargs):
try:
compiler_from_language(get_fake_env(), lang, MachineChoice.HOST)
except EnvironmentException:
raise unittest.SkipTest(f'No {lang} compiler found.')
return func(*args, **kwargs)
return wrapped
return wrapper
def skip_if_env_set(key):
'''
Skip a test if a particular env is set, except when running under CI
'''
def wrapper(func):
@functools.wraps(func)
def wrapped(*args, **kwargs):
old = None
if key in os.environ:
if not is_ci():
raise unittest.SkipTest(f'Env var {key!r} set, skipping')
old = os.environ.pop(key)
try:
return func(*args, **kwargs)
finally:
if old is not None:
os.environ[key] = old
return wrapped
return wrapper
def skipIfNoExecutable(exename):
'''
Skip this test if the given executable is not found.
'''
def wrapper(func):
@functools.wraps(func)
def wrapped(*args, **kwargs):
if shutil.which(exename) is None:
raise unittest.SkipTest(exename + ' not found')
return func(*args, **kwargs)
return wrapped
return wrapper
def is_tarball():
if not os.path.isdir('docs'):
return True
return False
@contextmanager
def chdir(path: str):
curdir = os.getcwd()
os.chdir(path)
try:
yield
finally:
os.chdir(curdir)
def get_dynamic_section_entry(fname: str, entry: str) -> T.Optional[str]:
if is_cygwin() or is_osx():
raise unittest.SkipTest('Test only applicable to ELF platforms')
try:
raw_out = subprocess.check_output(['readelf', '-d', fname],
universal_newlines=True)
except FileNotFoundError:
# FIXME: Try using depfixer.py:Elf() as a fallback
raise unittest.SkipTest('readelf not found')
pattern = re.compile(entry + r': \[(.*?)\]')
for line in raw_out.split('\n'):
m = pattern.search(line)
if m is not None:
return str(m.group(1))
return None # The file did not contain the specified entry.
def get_soname(fname: str) -> T.Optional[str]:
return get_dynamic_section_entry(fname, 'soname')
def get_rpath(fname: str) -> T.Optional[str]:
raw = get_dynamic_section_entry(fname, r'(?:rpath|runpath)')
# Get both '' and None here
if not raw:
return None
# nix/nixos adds a bunch of stuff to the rpath out of necessity that we
# don't check for, so clear those
final = ':'.join([e for e in raw.split(':') if not e.startswith('/nix')])
# If we didn't end up anything but nix paths, return None here
if not final:
return None
return final
def get_path_without_cmd(cmd: str, path: str) -> str:
pathsep = os.pathsep
paths = OrderedSet([Path(p).resolve() for p in path.split(pathsep)])
while True:
full_path = shutil.which(cmd, path=path)
if full_path is None:
break
dirname = Path(full_path).resolve().parent
paths.discard(dirname)
path = pathsep.join([str(p) for p in paths])
return path
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