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import py
import sys, os, re
import shutil, subprocess, time
from testing.udir import udir
import cffi
if hasattr(sys, 'gettotalrefcount'):
py.test.skip("tried hard and failed to have these tests run "
"in a debug-mode python")
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)
except cffi.VerificationError as e:
_link_error = e
else:
_link_error = None
if _link_error:
py.test.skip(str(_link_error))
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":
self._compiled_modules.clear() # workaround
def get_path(self):
return str(self._path.ensure(dir=1))
def _run(self, args, env=None):
print(args)
popen = subprocess.Popen(args, env=env, 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" % (
err, args))
print(output.rstrip())
return output
def prepare_module(self, name):
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().
env = os.environ.copy()
env['PYTHONPATH'] = os.path.dirname(os.path.dirname(local_dir))
output = self._run([sys.executable, os.path.join(local_dir, filename)],
env=env)
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')
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 = []
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
elif threads:
extra_preargs.append('-pthread')
objects = c.compile([filename], macros=sorted(defines.items()), debug=True)
c.link_executable(objects + modules, name, extra_preargs=extra_preargs)
finally:
os.chdir(curdir)
def execute(self, name):
path = self.get_path()
env = os.environ.copy()
env['PYTHONPATH'] = os.path.dirname(os.path.dirname(local_dir))
libpath = env.get('LD_LIBRARY_PATH')
if libpath:
libpath = path + ':' + libpath
else:
libpath = path
env['LD_LIBRARY_PATH'] = libpath
print('running %r in %r' % (name, path))
executable_name = name
if sys.platform == 'win32':
executable_name = os.path.join(path, executable_name + '.exe')
popen = subprocess.Popen([executable_name], cwd=path, env=env,
stdout=subprocess.PIPE,
universal_newlines=True)
result = popen.stdout.read()
err = popen.wait()
if err:
raise OSError("%r failed with exit code %r" % (name, err))
return result
class TestBasic(EmbeddingTests):
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")
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