def test_array_addressof(self):
import _rawffi
lib = _rawffi.CDLL(self.lib_name)
alloc = lib.ptr('allocate_array', [], 'P')
A = _rawffi.Array('i')
res = alloc()
a = A.fromaddress(res[0], 1)
assert a[0] == 3
assert A.fromaddress(a.buffer, 1)[0] == 3
def test_byordinal(self):
if not self.iswin32:
skip("win32 specific")
import _rawffi
lib = _rawffi.CDLL(self.lib_name)
# This will call the ordinal function numbered 1
# my compiler seems to order them alphabetically:
# AAA_first_ordinal_function
assert lib.ptr(1, [], 'i')()[0] == 42
def test_time(self):
import _rawffi
libc = _rawffi.CDLL('libc.so.6')
time = libc.ptr('time', ['z'], 'l') # 'z' instead of 'P' just for test
arg = _rawffi.Array('P')(1)
arg[0] = 0
res = time(arg)
assert res[0] != 0
res.free()
arg.free()
def test_libload_fail(self):
import _rawffi
try:
_rawffi.CDLL("xxxxx_this_name_does_not_exist_xxxxx")
except OSError as e:
print e
assert str(e).startswith(
"Cannot load library xxxxx_this_name_does_not_exist_xxxxx: ")
else:
raise AssertionError("did not fail??")
def test_struct_byvalue(self):
import _rawffi, sys
X_Y = _rawffi.Structure([('x', 'l'), ('y', 'l')])
x_y = X_Y()
lib = _rawffi.CDLL(self.lib_name)
sum_x_y = lib.ptr('sum_x_y', [(X_Y, 1)], 'l')
x_y.x = 200
x_y.y = 220
res = sum_x_y(x_y)
assert res[0] == 420
x_y.free()
def test_union(self):
import _rawffi
longsize = _rawffi.sizeof('l')
S = _rawffi.Structure([('x', 'h'), ('y', 'l')], union=True)
s = S(autofree=False)
s.x = 12345
lib = _rawffi.CDLL(self.lib_name)
f = lib.ptr('ret_un_func', [(S, 1)], (S, 1))
ret = f(s)
assert ret.y == 1234500, "ret.y == %d" % (ret.y, )
s.free()
def test_short_addition(self):
import _rawffi
lib = _rawffi.CDLL(self.lib_name)
short_add = lib.ptr('add_shorts', ['h', 'h'], 'H')
A = _rawffi.Array('h')
arg1 = A(1, autofree=True)
arg2 = A(1, autofree=True)
arg1[0] = 1
arg2[0] = 2
res = short_add(arg1, arg2)
assert res[0] == 3
def test_libload_None(self):
import _rawffi
# this should return *all* loaded libs, dlopen(NULL)
try:
dll = _rawffi.CDLL(None)
except TypeError:
if not self.iswin32:
raise
else:
func = dll.ptr('rand', [], 'i')
res = func()
assert res[0] != 0
def test_bad_parameters(self):
import _rawffi
lib = _rawffi.CDLL(self.lib_name)
nothing = lib.ptr('nothing', [], None)
assert nothing() is None
raises(AttributeError, "lib.ptr('get_charx', [], None)")
raises(ValueError, "lib.ptr('get_char', ['xx'], None)")
raises(ValueError, "lib.ptr('get_char', ['x'], None)")
raises(ValueError, "lib.ptr('get_char', [], 'x')")
raises(ValueError, "_rawffi.Structure(['x1', 'xx'])")
raises(ValueError, _rawffi.Structure, [('x1', 'xx')])
raises(ValueError, "_rawffi.Array('xx')")
def test_ret_struct_containing_array(self):
import _rawffi
AoI = _rawffi.Array('i')
S2A = _rawffi.Structure([('bah', (AoI, 2))])
lib = _rawffi.CDLL(self.lib_name)
get_s2a = lib.ptr('get_s2a', [], (S2A, 1))
check_s2a = lib.ptr('check_s2a', [(S2A, 1)], 'i')
res = get_s2a()
assert isinstance(res, _rawffi.StructureInstanceAutoFree)
assert res.shape is S2A
ok = check_s2a(res)
assert ok[0] == 1
def test_another_callback(self):
import _rawffi
lib = _rawffi.CDLL(self.lib_name)
runcallback = lib.ptr('runcallback', ['P'], 'q')
def callback():
return 1<<42
cb = _rawffi.CallbackPtr(callback, [], 'q')
a1 = cb.byptr()
res = runcallback(a1)
assert res[0] == 1<<42
a1.free()
cb.free()
def test_errno(self):
import _rawffi
lib = _rawffi.CDLL(self.lib_name)
A = _rawffi.Array('i')
f = lib.ptr('check_errno', ['i'], 'i')
_rawffi.set_errno(42)
arg = A(1)
arg[0] = 43
res = f(arg)
assert res[0] == 42
z = _rawffi.get_errno()
assert z == 43
arg.free()
def test_stackcheck(self):
if self.platform != "msvc":
skip("win32 msvc specific")
# Even if the call corresponds to the specified signature,
# the STDCALL calling convention may detect some errors
import _rawffi
lib = _rawffi.CDLL('kernel32')
f = lib.ptr('SetLastError', [], 'i')
try:
f()
except ValueError, e:
assert "Procedure called with not enough arguments" in e.message
def test_getaddressindll(self):
import _rawffi
lib = _rawffi.CDLL(self.lib_name)
def getprimitive(typecode, name):
addr = lib.getaddressindll(name)
return _rawffi.Array(typecode).fromaddress(addr, 1)
a = getprimitive("l", "static_int")
assert a[0] == 42
a = getprimitive("d", "static_double")
assert a[0] == 42.42
raises(ValueError, getprimitive, 'z', 'ddddddd')
raises(ValueError, getprimitive, 'zzz', 'static_int')
def test_pow(self):
import _rawffi
libm = _rawffi.CDLL(self.libm_name)
pow = libm.ptr('pow', ['d', 'd'], 'd')
A = _rawffi.Array('d')
arg1 = A(1)
arg2 = A(1)
raises(TypeError, "arg1[0] = 'x'")
arg1[0] = 3
arg2[0] = 2.0
res = pow(arg1, arg2)
assert res[0] == 9.0
arg1.free()
arg2.free()
def test_struct_byvalue(self):
import _rawffi, sys
X_Y = _rawffi.Structure([('x', 'l'), ('y', 'l')])
x_y = X_Y()
lib = _rawffi.CDLL(self.lib_name)
print >> sys.stderr, "getting..."
sum_x_y = lib.ptr('sum_x_y', [(X_Y, 1)], 'l')
x_y.x = 200
x_y.y = 220
print >> sys.stderr, "calling..."
res = sum_x_y(x_y)
print >> sys.stderr, "done"
assert res[0] == 420
x_y.free()
def test_void_returning_callback(self):
import _rawffi
lib = _rawffi.CDLL(self.lib_name)
runcallback = lib.ptr('runcallback', ['P'], None)
called = []
def callback():
called.append(True)
cb = _rawffi.CallbackPtr(callback, [], None)
a1 = cb.byptr()
res = runcallback(a1)
assert res is None
assert called == [True]
a1.free()
cb.free()
def test_passing_raw_pointers(self):
import _rawffi
lib = _rawffi.CDLL(self.lib_name)
A = _rawffi.Array('i')
get_array_elem = lib.ptr('get_array_elem', ['P', 'i'], 'i')
a = A(1)
a[0] = 3
arg1 = _rawffi.Array('P')(1)
arg1[0] = a.buffer
arg2 = _rawffi.Array('i')(1)
res = get_array_elem(arg1, arg2)
assert res[0] == 3
arg1.free()
arg2.free()
a.free()
def test_longs_ulongs(self):
import _rawffi
lib = _rawffi.CDLL(self.lib_name)
some_huge_value = lib.ptr('some_huge_value', [], 'q')
res = some_huge_value()
assert res[0] == 1 << 42
some_huge_uvalue = lib.ptr('some_huge_uvalue', [], 'Q')
res = some_huge_uvalue()
assert res[0] == 1 << 42
pass_ll = lib.ptr('pass_ll', ['q'], 'q')
arg1 = _rawffi.Array('q')(1)
arg1[0] = 1 << 42
res = pass_ll(arg1)
assert res[0] == 1 << 42
arg1.free()
def test_struct_byvalue(self):
if self.isx86_64:
skip("Segfaults on x86_64 because small structures "
"may be passed in registers and "
"c_elements must not be null")
import _rawffi
X_Y = _rawffi.Structure([('x', 'l'), ('y', 'l')])
x_y = X_Y()
lib = _rawffi.CDLL(self.lib_name)
sum_x_y = lib.ptr('sum_x_y', [(X_Y, 1)], 'l')
x_y.x = 200
x_y.y = 220
res = sum_x_y(x_y)
assert res[0] == 420
x_y.free()
def test_getchar(self):
import _rawffi
lib = _rawffi.CDLL(self.lib_name)
get_char = lib.ptr('get_char', ['P', 'H'], 'c')
A = _rawffi.Array('c')
B = _rawffi.Array('H')
dupa = A(5, 'dupa')
dupaptr = dupa.byptr()
for i in range(4):
intptr = B(1)
intptr[0] = i
res = get_char(dupaptr, intptr)
assert res[0] == 'dupa'[i]
intptr.free()
dupaptr.free()
dupa.free()
def test_last_error(self):
import sys
if sys.platform != 'win32':
skip("Windows test")
import _rawffi
lib = _rawffi.CDLL(self.lib_name)
A = _rawffi.Array('i')
f = lib.ptr('check_last_error', ['i'], 'i')
_rawffi.set_last_error(42)
arg = A(1)
arg[0] = 43
res = f(arg)
assert res[0] == 42
z = _rawffi.get_last_error()
assert z == 43
arg.free()
def test_variadic_sum(self):
import _rawffi
lib = _rawffi.CDLL(self.lib_name)
A = _rawffi.Array('l')
n = A(1)
arg1 = A(1)
arg2 = A(1)
n[0] = 2
arg1[0] = 3
arg2[0] = 15
variadic_sum = lib.ptr('variadic_sum', ['l', 'l', 'l'],
'l',
variadic_args=2)
res = variadic_sum(n, arg1, arg2)
assert res[0] == 3 + 15
arg1.free()
arg2.free()
n.free()
def test_array(self):
import _rawffi
lib = _rawffi.CDLL(self.lib_name)
A = _rawffi.Array('i')
get_array_elem = lib.ptr('get_array_elem', ['P', 'i'], 'i')
a = A(10)
a[8] = 3
a[7] = 1
a[6] = 2
arg1 = a.byptr()
arg2 = A(1)
for i, expected in enumerate([0, 0, 0, 0, 0, 0, 2, 1, 3, 0]):
arg2[0] = i
res = get_array_elem(arg1, arg2)
assert res[0] == expected
arg1.free()
arg2.free()
assert a[3] == 0
a.free()
def test_raw_callable(self):
import _rawffi
lib = _rawffi.CDLL(self.lib_name)
get_raw_pointer = lib.ptr('get_raw_pointer', [], 'P')
ptr = get_raw_pointer()
rawcall = _rawffi.FuncPtr(ptr[0], ['h', 'h'], 'H')
A = _rawffi.Array('h')
arg1 = A(1)
arg2 = A(1)
arg1[0] = 1
arg2[0] = 2
res = rawcall(arg1, arg2)
assert res[0] == 3
arg1.free()
arg2.free()
assert rawcall.buffer == ptr[0]
ptr = rawcall.byptr()
assert ptr[0] == rawcall.buffer
ptr.free()
def test_callback_struct_byvalue(self):
import _rawffi, sys
X_Y = _rawffi.Structure([('x', 'l'), ('y', 'l')])
lib = _rawffi.CDLL(self.lib_name)
op_x_y = lib.ptr('op_x_y', [(X_Y, 1), 'P'], 'l')
def callback(x_y):
return x_y.x + x_y.y
cb = _rawffi.CallbackPtr(callback, [(X_Y, 1)], 'l')
x_y = X_Y()
x_y.x = 200
x_y.y = 220
a1 = cb.byptr()
res = op_x_y(x_y, a1)
a1.free()
x_y.free()
cb.free()
assert res[0] == 420
def test_nested_structures(self):
import _rawffi
lib = _rawffi.CDLL(self.lib_name)
inner = lib.ptr("inner_struct_elem", ['P'], 'c')
X = _rawffi.Structure([('x1', 'i'), ('x2', 'h'), ('x3', 'c'), ('next', 'P')])
next = X()
next.next = 0
next.x3 = 'x'
x = X()
x.next = next
x.x1 = 1
x.x2 = 2
x.x3 = 'x'
assert X.fromaddress(x.next).x3 == 'x'
x.free()
next.free()
create_double_struct = lib.ptr("create_double_struct", [], 'P')
res = create_double_struct()
x = X.fromaddress(res[0])
assert X.fromaddress(x.next).x2 == 3
free_double_struct = lib.ptr("free_double_struct", ['P'], None)
free_double_struct(res)
def test_array_of_structure(self):
import _rawffi
lib = _rawffi.CDLL(self.lib_name)
A = _rawffi.Array('P')
X = _rawffi.Structure([('x1', 'i'), ('x2', 'h'), ('x3', 'c'), ('next', 'P')])
x = X()
x.x2 = 3
a = A(3)
a[1] = x
get_array_elem_s = lib.ptr('get_array_elem_s', ['P', 'i'], 'P')
arg1 = a.byptr()
arg2 = _rawffi.Array('i')(1)
res = get_array_elem_s(arg1, arg2)
assert res[0] == 0
arg2[0] = 1
res = get_array_elem_s(arg1, arg2)
assert X.fromaddress(res[0]).x2 == 3
assert res[0] == x.buffer
arg1.free()
arg2.free()
x.free()
a.free()
def test_structreturn(self):
import _rawffi
X = _rawffi.Structure([('x', 'l')])
x = X()
x.x = 121
Tm = _rawffi.Structure([('tm_sec', 'i'), ('tm_min', 'i'),
('tm_hour', 'i'), ("tm_mday", 'i'),
("tm_mon", 'i'), ("tm_year", 'i'),
("tm_wday", 'i'), ("tm_yday", 'i'),
("tm_isdst", 'i')])
libc = _rawffi.CDLL('libc.so.6')
gmtime = libc.ptr('gmtime', ['P'], 'P')
arg = x.byptr()
res = gmtime(arg)
t = Tm.fromaddress(res[0])
res.free()
arg.free()
assert t.tm_year == 70
assert t.tm_sec == 1
assert t.tm_min == 2
x.free()
def test_raising_callback(self):
import _rawffi, sys
import StringIO
lib = _rawffi.CDLL(self.lib_name)
err = StringIO.StringIO()
orig = sys.stderr
sys.stderr = err
try:
runcallback = lib.ptr('runcallback', ['P'], 'q')
def callback():
1 / 0
cb = _rawffi.CallbackPtr(callback, [], 'q')
a1 = cb.byptr()
res = runcallback(a1)
a1.free()
del cb
val = err.getvalue()
assert 'ZeroDivisionError' in val
assert 'callback' in val
finally:
sys.stderr = orig