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import py, sys
import subprocess, weakref
from cffi import FFI
from cffi.backend_ctypes import CTypesBackend
SOURCE = """\
#include <errno.h>
#ifdef _WIN32
#define EXPORT __declspec(dllexport)
#else
#define EXPORT
#endif
EXPORT int test_getting_errno(void) {
errno = 123;
return -1;
}
EXPORT int test_setting_errno(void) {
return errno;
};
typedef struct {
long x;
long y;
} POINT;
typedef struct {
long left;
long top;
long right;
long bottom;
} RECT;
EXPORT int PointInRect(RECT *prc, POINT pt)
{
if (pt.x < prc->left)
return 0;
if (pt.x > prc->right)
return 0;
if (pt.y < prc->top)
return 0;
if (pt.y > prc->bottom)
return 0;
return 1;
};
EXPORT long left = 10;
EXPORT long top = 20;
EXPORT long right = 30;
EXPORT long bottom = 40;
EXPORT RECT ReturnRect(int i, RECT ar, RECT* br, POINT cp, RECT dr,
RECT *er, POINT fp, RECT gr)
{
/*Check input */
if (ar.left + br->left + dr.left + er->left + gr.left != left * 5)
{
ar.left = 100;
return ar;
}
if (ar.right + br->right + dr.right + er->right + gr.right != right * 5)
{
ar.right = 100;
return ar;
}
if (cp.x != fp.x)
{
ar.left = -100;
}
if (cp.y != fp.y)
{
ar.left = -200;
}
switch(i)
{
case 0:
return ar;
break;
case 1:
return dr;
break;
case 2:
return gr;
break;
}
return ar;
}
EXPORT int my_array[7] = {0, 1, 2, 3, 4, 5, 6};
"""
class TestOwnLib(object):
Backend = CTypesBackend
def setup_class(cls):
cls.module = None
from testing.udir import udir
udir.join('testownlib.c').write(SOURCE)
if sys.platform == 'win32':
import os
# did we already build it?
if os.path.exists(str(udir.join('testownlib.dll'))):
cls.module = str(udir.join('testownlib.dll'))
return
# try (not too hard) to find the version used to compile this python
# no mingw
from distutils.msvc9compiler import get_build_version
version = get_build_version()
toolskey = "VS%0.f0COMNTOOLS" % version
toolsdir = os.environ.get(toolskey, None)
if toolsdir is None:
return
productdir = os.path.join(toolsdir, os.pardir, os.pardir, "VC")
productdir = os.path.abspath(productdir)
vcvarsall = os.path.join(productdir, "vcvarsall.bat")
# 64?
arch = 'x86'
if sys.maxsize > 2**32:
arch = 'amd64'
if os.path.isfile(vcvarsall):
cmd = '"%s" %s' % (vcvarsall, arch) + ' & cl.exe testownlib.c ' \
' /LD /Fetestownlib.dll'
subprocess.check_call(cmd, cwd = str(udir), shell=True)
cls.module = str(udir.join('testownlib.dll'))
else:
subprocess.check_call(
'cc testownlib.c -shared -fPIC -o testownlib.so',
cwd=str(udir), shell=True)
cls.module = str(udir.join('testownlib.so'))
def test_getting_errno(self):
if self.module is None:
py.test.skip("fix the auto-generation of the tiny test lib")
if sys.platform == 'win32':
py.test.skip("fails, errno at multiple addresses")
ffi = FFI(backend=self.Backend())
ffi.cdef("""
int test_getting_errno(void);
""")
ownlib = ffi.dlopen(self.module)
res = ownlib.test_getting_errno()
assert res == -1
assert ffi.errno == 123
def test_setting_errno(self):
if self.module is None:
py.test.skip("fix the auto-generation of the tiny test lib")
if sys.platform == 'win32':
py.test.skip("fails, errno at multiple addresses")
if self.Backend is CTypesBackend and '__pypy__' in sys.modules:
py.test.skip("XXX errno issue with ctypes on pypy?")
ffi = FFI(backend=self.Backend())
ffi.cdef("""
int test_setting_errno(void);
""")
ownlib = ffi.dlopen(self.module)
ffi.errno = 42
res = ownlib.test_setting_errno()
assert res == 42
assert ffi.errno == 42
def test_my_array_7(self):
if self.module is None:
py.test.skip("fix the auto-generation of the tiny test lib")
ffi = FFI(backend=self.Backend())
ffi.cdef("""
int my_array[7];
""")
ownlib = ffi.dlopen(self.module)
for i in range(7):
assert ownlib.my_array[i] == i
assert len(ownlib.my_array) == 7
if self.Backend is CTypesBackend:
py.test.skip("not supported by the ctypes backend")
ownlib.my_array = list(range(10, 17))
for i in range(7):
assert ownlib.my_array[i] == 10 + i
ownlib.my_array = list(range(7))
for i in range(7):
assert ownlib.my_array[i] == i
def test_my_array_no_length(self):
if self.module is None:
py.test.skip("fix the auto-generation of the tiny test lib")
if self.Backend is CTypesBackend:
py.test.skip("not supported by the ctypes backend")
ffi = FFI(backend=self.Backend())
ffi.cdef("""
int my_array[];
""")
ownlib = ffi.dlopen(self.module)
for i in range(7):
assert ownlib.my_array[i] == i
py.test.raises(TypeError, len, ownlib.my_array)
ownlib.my_array = list(range(10, 17))
for i in range(7):
assert ownlib.my_array[i] == 10 + i
ownlib.my_array = list(range(7))
for i in range(7):
assert ownlib.my_array[i] == i
def test_keepalive_lib(self):
if self.module is None:
py.test.skip("fix the auto-generation of the tiny test lib")
ffi = FFI(backend=self.Backend())
ffi.cdef("""
int test_getting_errno(void);
""")
ownlib = ffi.dlopen(self.module)
ffi_r = weakref.ref(ffi)
ownlib_r = weakref.ref(ownlib)
func = ownlib.test_getting_errno
del ffi
import gc; gc.collect() # ownlib stays alive
assert ownlib_r() is not None
assert ffi_r() is not None # kept alive by ownlib
res = func()
assert res == -1
def test_keepalive_ffi(self):
if self.module is None:
py.test.skip("fix the auto-generation of the tiny test lib")
ffi = FFI(backend=self.Backend())
ffi.cdef("""
int test_getting_errno(void);
""")
ownlib = ffi.dlopen(self.module)
ffi_r = weakref.ref(ffi)
ownlib_r = weakref.ref(ownlib)
func = ownlib.test_getting_errno
del ownlib
import gc; gc.collect() # ffi stays alive
assert ffi_r() is not None
assert ownlib_r() is not None # kept alive by ffi
res = func()
assert res == -1
if sys.platform != 'win32': # else, errno at multiple addresses
assert ffi.errno == 123
def test_struct_by_value(self):
if self.module is None:
py.test.skip("fix the auto-generation of the tiny test lib")
ffi = FFI(backend=self.Backend())
ffi.cdef("""
typedef struct {
long x;
long y;
} POINT;
typedef struct {
long left;
long top;
long right;
long bottom;
} RECT;
long left, top, right, bottom;
RECT ReturnRect(int i, RECT ar, RECT* br, POINT cp, RECT dr,
RECT *er, POINT fp, RECT gr);
""")
ownlib = ffi.dlopen(self.module)
rect = ffi.new('RECT[1]')
pt = ffi.new('POINT[1]')
pt[0].x = 15
pt[0].y = 25
rect[0].left = ownlib.left
rect[0].right = ownlib.right
rect[0].top = ownlib.top
rect[0].bottom = ownlib.bottom
for i in range(4):
ret = ownlib.ReturnRect(i, rect[0], rect, pt[0], rect[0],
rect, pt[0], rect[0])
assert ret.left == ownlib.left
assert ret.right == ownlib.right
assert ret.top == ownlib.top
assert ret.bottom == ownlib.bottom
|
