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