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import py
import sys, os, re
import shutil, subprocess, time
from testing.udir import udir
import cffi
local_dir = os.path.dirname(os.path.abspath(__file__))
_link_error = '?'
def check_lib_python_found(tmpdir):
global _link_error
if _link_error == '?':
ffi = cffi.FFI()
kwds = {}
ffi._apply_embedding_fix(kwds)
ffi.set_source("_test_lib_python_found", "", **kwds)
try:
ffi.compile(tmpdir=tmpdir, verbose=True)
except cffi.VerificationError as e:
_link_error = e
else:
_link_error = None
if _link_error:
py.test.skip(str(_link_error))
def prefix_pythonpath():
cffi_base = os.path.dirname(os.path.dirname(local_dir))
pythonpath = org_env.get('PYTHONPATH', '').split(os.pathsep)
if cffi_base not in pythonpath:
pythonpath.insert(0, cffi_base)
return os.pathsep.join(pythonpath)
def copy_away_env():
global org_env
try:
org_env
except NameError:
org_env = os.environ.copy()
class EmbeddingTests:
_compiled_modules = {}
def setup_method(self, meth):
check_lib_python_found(str(udir.ensure('embedding', dir=1)))
self._path = udir.join('embedding', meth.__name__)
if sys.platform == "win32" or sys.platform == "darwin":
self._compiled_modules.clear() # workaround
def get_path(self):
return str(self._path.ensure(dir=1))
def _run_base(self, args, **kwds):
print('RUNNING:', args, kwds)
return subprocess.Popen(args, **kwds)
def _run(self, args):
popen = self._run_base(args, cwd=self.get_path(),
stdout=subprocess.PIPE,
universal_newlines=True)
output = popen.stdout.read()
err = popen.wait()
if err:
raise OSError(("popen failed with exit code %r: %r\n\n%s" % (
err, args, output)).rstrip())
print(output.rstrip())
return output
def prepare_module(self, name):
self.patch_environment()
if name not in self._compiled_modules:
path = self.get_path()
filename = '%s.py' % name
# NOTE: if you have an .egg globally installed with an older
# version of cffi, this will not work, because sys.path ends
# up with the .egg before the PYTHONPATH entries. I didn't
# find a solution to that: we could hack sys.path inside the
# script run here, but we can't hack it in the same way in
# execute().
pathname = os.path.join(path, filename)
with open(pathname, 'w') as g:
g.write('''
# https://bugs.python.org/issue23246
import sys
if sys.platform == 'win32':
try:
import setuptools
except ImportError:
pass
''')
with open(os.path.join(local_dir, filename), 'r') as f:
g.write(f.read())
output = self._run([sys.executable, pathname])
match = re.compile(r"\bFILENAME: (.+)").search(output)
assert match
dynamic_lib_name = match.group(1)
if sys.platform == 'win32':
assert dynamic_lib_name.endswith('_cffi.dll')
elif sys.platform == 'darwin':
assert dynamic_lib_name.endswith('_cffi.dylib')
else:
assert dynamic_lib_name.endswith('_cffi.so')
self._compiled_modules[name] = dynamic_lib_name
return self._compiled_modules[name]
def compile(self, name, modules, opt=False, threads=False, defines={}):
path = self.get_path()
filename = '%s.c' % name
shutil.copy(os.path.join(local_dir, filename), path)
shutil.copy(os.path.join(local_dir, 'thread-test.h'), path)
import distutils.ccompiler
curdir = os.getcwd()
try:
os.chdir(self.get_path())
c = distutils.ccompiler.new_compiler()
print('compiling %s with %r' % (name, modules))
extra_preargs = []
debug = True
if sys.platform == 'win32':
libfiles = []
for m in modules:
m = os.path.basename(m)
assert m.endswith('.dll')
libfiles.append('Release\\%s.lib' % m[:-4])
modules = libfiles
extra_preargs.append('/MANIFEST')
debug = False # you need to install extra stuff
# for this to work
elif threads:
extra_preargs.append('-pthread')
objects = c.compile([filename], macros=sorted(defines.items()),
debug=debug)
c.link_executable(objects + modules, name, extra_preargs=extra_preargs)
finally:
os.chdir(curdir)
def patch_environment(self):
copy_away_env()
path = self.get_path()
# for libpypy-c.dll or Python27.dll
path = os.path.split(sys.executable)[0] + os.path.pathsep + path
env_extra = {'PYTHONPATH': prefix_pythonpath()}
if sys.platform == 'win32':
envname = 'PATH'
else:
envname = 'LD_LIBRARY_PATH'
libpath = org_env.get(envname)
if libpath:
libpath = path + os.path.pathsep + libpath
else:
libpath = path
env_extra[envname] = libpath
for key, value in sorted(env_extra.items()):
if os.environ.get(key) != value:
print('* setting env var %r to %r' % (key, value))
os.environ[key] = value
def execute(self, name):
path = self.get_path()
print('running %r in %r' % (name, path))
executable_name = name
if sys.platform == 'win32':
executable_name = os.path.join(path, executable_name + '.exe')
else:
executable_name = os.path.join('.', executable_name)
popen = self._run_base([executable_name], cwd=path,
stdout=subprocess.PIPE,
universal_newlines=True)
result = popen.stdout.read()
err = popen.wait()
if err:
raise OSError("%r failed with exit code %r" % (
os.path.join(path, executable_name), err))
return result
class TestBasic(EmbeddingTests):
def test_empty(self):
empty_cffi = self.prepare_module('empty')
def test_basic(self):
add1_cffi = self.prepare_module('add1')
self.compile('add1-test', [add1_cffi])
output = self.execute('add1-test')
assert output == ("preparing...\n"
"adding 40 and 2\n"
"adding 100 and -5\n"
"got: 42 95\n")
def test_two_modules(self):
add1_cffi = self.prepare_module('add1')
add2_cffi = self.prepare_module('add2')
self.compile('add2-test', [add1_cffi, add2_cffi])
output = self.execute('add2-test')
assert output == ("preparing...\n"
"adding 40 and 2\n"
"prepADD2\n"
"adding 100 and -5 and -20\n"
"got: 42 75\n")
def test_init_time_error(self):
initerror_cffi = self.prepare_module('initerror')
self.compile('add1-test', [initerror_cffi])
output = self.execute('add1-test')
assert output == "got: 0 0\n" # plus lots of info to stderr
def test_embedding_with_unicode(self):
withunicode_cffi = self.prepare_module('withunicode')
self.compile('add1-test', [withunicode_cffi])
output = self.execute('add1-test')
assert output == "255\n4660\n65244\ngot: 0 0\n"
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