1 import unittest 2 from ctypes import * 3 4 class MyInt(c_int): 5 def __cmp__(self, other): 6 if type(other) != MyInt: 7 return -1 8 return cmp(self.value, other.value) 9 def __hash__(self): # Silence Py3k warning 10 return hash(self.value) 11 12 class Test(unittest.TestCase): 13 14 def test_compare(self): 15 self.assertEqual(MyInt(3), MyInt(3)) 16 self.assertNotEqual(MyInt(42), MyInt(43)) 17 18 def test_ignore_retval(self): 19 # Test if the return value of a callback is ignored 20 # if restype is None 21 proto = CFUNCTYPE(None) 22 def func(): 23 return (1, "abc", None) 24 25 cb = proto(func) 26 self.assertEqual(None, cb()) 27 28 29 def test_int_callback(self): 30 args = [] 31 def func(arg): 32 args.append(arg) 33 return arg 34 35 cb = CFUNCTYPE(None, MyInt)(func) 36 37 self.assertEqual(None, cb(42)) 38 self.assertEqual(type(args[-1]), MyInt) 39 40 cb = CFUNCTYPE(c_int, c_int)(func) 41 42 self.assertEqual(42, cb(42)) 43 self.assertEqual(type(args[-1]), int) 44 45 def test_int_struct(self): 46 class X(Structure): 47 _fields_ = [("x", MyInt)] 48 49 self.assertEqual(X().x, MyInt()) 50 51 s = X() 52 s.x = MyInt(42) 53 54 self.assertEqual(s.x, MyInt(42)) 55 56 if __name__ == "__main__": 57 unittest.main() 58
