[pypy-svn] r50383 - pypy/branch/applevel-ctypes2/pypy/lib/app_test/ctypes
fijal at codespeak.net
fijal at codespeak.net
Sun Jan 6 15:45:47 CET 2008
Author: fijal
Date: Sun Jan 6 15:45:46 2008
New Revision: 50383
Added:
pypy/branch/applevel-ctypes2/pypy/lib/app_test/ctypes/test_pointers.py (contents, props changed)
Modified:
pypy/branch/applevel-ctypes2/pypy/lib/app_test/ctypes/ (props changed)
pypy/branch/applevel-ctypes2/pypy/lib/app_test/ctypes/test_numbers.py
Log:
* fix one test number
* add pointer tests
Modified: pypy/branch/applevel-ctypes2/pypy/lib/app_test/ctypes/test_numbers.py
==============================================================================
--- pypy/branch/applevel-ctypes2/pypy/lib/app_test/ctypes/test_numbers.py (original)
+++ pypy/branch/applevel-ctypes2/pypy/lib/app_test/ctypes/test_numbers.py Sun Jan 6 15:45:46 2008
@@ -81,7 +81,6 @@
def test_byref(self):
# calling byref returns also a PyCArgObject instance
- py.test.skip("Works by accident")
for t in signed_types + unsigned_types + float_types:
parm = byref(t())
assert ArgType == type(parm)
Added: pypy/branch/applevel-ctypes2/pypy/lib/app_test/ctypes/test_pointers.py
==============================================================================
--- (empty file)
+++ pypy/branch/applevel-ctypes2/pypy/lib/app_test/ctypes/test_pointers.py Sun Jan 6 15:45:46 2008
@@ -0,0 +1,178 @@
+import py
+from ctypes import *
+
+ctype_types = [c_byte, c_ubyte, c_short, c_ushort, c_int, c_uint,
+ c_long, c_ulong, c_longlong, c_ulonglong, c_double, c_float]
+python_types = [int, int, int, int, int, long,
+ int, long, long, long, float, float]
+
+def setup_module(mod):
+ f = py.magic.autopath().dirpath().join('_ctypes_test.so')
+ if not f.check():
+ raise Exception("Grab your _ctypes_test.so from your python lib directory and copy it here")
+ mod._ctypes_test = str(f)
+
+class TestPointers:
+
+ def test_pointer_crash(self):
+
+ class A(POINTER(c_ulong)):
+ pass
+
+ POINTER(c_ulong)(c_ulong(22))
+ # Pointer can't set contents: has no _type_
+ py.test.raises(TypeError, A, c_ulong(33))
+
+ def test_pass_pointers(self):
+ dll = CDLL(_ctypes_test)
+ func = dll._testfunc_p_p
+ func.restype = c_long
+
+ i = c_int(12345678)
+## func.argtypes = (POINTER(c_int),)
+ address = func(byref(i))
+ assert c_int.from_address(address).value == 12345678
+
+ func.restype = POINTER(c_int)
+ res = func(pointer(i))
+ assert res.contents.value == 12345678
+ assert res[0] == 12345678
+
+ def test_change_pointers(self):
+ dll = CDLL(_ctypes_test)
+ func = dll._testfunc_p_p
+
+ i = c_int(87654)
+ func.restype = POINTER(c_int)
+ func.argtypes = (POINTER(c_int),)
+
+ res = func(pointer(i))
+ assert res[0] == 87654
+ assert res.contents.value == 87654
+
+ # C code: *res = 54345
+ res[0] = 54345
+ assert i.value == 54345
+
+ # C code:
+ # int x = 12321;
+ # res = &x
+ res.contents = c_int(12321)
+ assert i.value == 54345
+
+ def test_callbacks_with_pointers(self):
+ # a function type receiving a pointer
+ PROTOTYPE = CFUNCTYPE(c_int, POINTER(c_int))
+
+ self.result = []
+
+ def func(arg):
+ for i in range(10):
+## print arg[i],
+ self.result.append(arg[i])
+## print
+ return 0
+ callback = PROTOTYPE(func)
+
+ dll = CDLL(_ctypes_test)
+ # This function expects a function pointer,
+ # and calls this with an integer pointer as parameter.
+ # The int pointer points to a table containing the numbers 1..10
+ doit = dll._testfunc_callback_with_pointer
+
+## i = c_int(42)
+## callback(byref(i))
+## self.failUnless(i.value == 84)
+
+ doit(callback)
+## print self.result
+ doit(callback)
+## print self.result
+
+ def test_basics(self):
+ from operator import delitem
+ for ct, pt in zip(ctype_types, python_types):
+ i = ct(42)
+ p = pointer(i)
+## print type(p.contents), ct
+ assert type(p.contents) is ct
+ # p.contents is the same as p[0]
+## print p.contents
+## self.failUnless(p.contents == 42)
+## self.failUnless(p[0] == 42)
+
+ py.test.raises(TypeError, delitem, p, 0)
+
+ def test_from_address(self):
+ from array import array
+ a = array('i', [100, 200, 300, 400, 500])
+ addr = a.buffer_info()[0]
+
+ p = POINTER(POINTER(c_int))
+## print dir(p)
+## print p.from_address
+## print p.from_address(addr)[0][0]
+
+ def test_other(self):
+ class Table(Structure):
+ _fields_ = [("a", c_int),
+ ("b", c_int),
+ ("c", c_int)]
+
+ pt = pointer(Table(1, 2, 3))
+
+ assert pt.contents.a == 1
+ assert pt.contents.b == 2
+ assert pt.contents.c == 3
+
+ pt.contents.c = 33
+
+ from ctypes import _pointer_type_cache
+ del _pointer_type_cache[Table]
+
+ def test_basic(self):
+ p = pointer(c_int(42))
+ # Although a pointer can be indexed, it ha no length
+ py.test.raises(TypeError, len, p)
+ assert p[0] == 42
+ assert p.contents.value == 42
+
+ def test_charpp(self):
+ """Test that a character pointer-to-pointer is correctly passed"""
+ dll = CDLL(_ctypes_test)
+ func = dll._testfunc_c_p_p
+ func.restype = c_char_p
+ argv = (c_char_p * 2)()
+ argc = c_int( 2 )
+ argv[0] = 'hello'
+ argv[1] = 'world'
+ result = func( byref(argc), argv )
+ assert result == 'world', result
+
+ def test_bug_1467852(self):
+ # http://sourceforge.net/tracker/?func=detail&atid=532154&aid=1467852&group_id=71702
+ x = c_int(5)
+ dummy = []
+ for i in range(32000):
+ dummy.append(c_int(i))
+ y = c_int(6)
+ p = pointer(x)
+ pp = pointer(p)
+ q = pointer(y)
+ pp[0] = q # <==
+ assert p[0] == 6
+ def test_c_void_p(self):
+ # http://sourceforge.net/tracker/?func=detail&aid=1518190&group_id=5470&atid=105470
+ if sizeof(c_void_p) == 4:
+ assert c_void_p(0xFFFFFFFFL).value == c_void_p(-1).value
+ assert c_void_p(0xFFFFFFFFFFFFFFFFL).value == c_void_p(-1).value
+ elif sizeof(c_void_p) == 8:
+ assert c_void_p(0xFFFFFFFFL).value == 0xFFFFFFFFL
+ assert c_void_p(0xFFFFFFFFFFFFFFFFL).value == c_void_p(-1).value
+ assert c_void_p(0xFFFFFFFFFFFFFFFFFFFFFFFFL).value == c_void_p(-1).value
+
+ py.test.raises(TypeError, c_void_p, 3.14) # make sure floats are NOT accepted
+ py.test.raises(TypeError, c_void_p, object()) # nor other objects
+
+if __name__ == '__main__':
+ unittest.main()
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