1 import unittest 2 from ctypes import * 3 4 import _ctypes_test 5 6 class SlicesTestCase(unittest.TestCase): 7 def test_getslice_cint(self): 8 a = (c_int * 100)(*xrange(1100, 1200)) 9 b = range(1100, 1200) 10 self.assertEqual(a[0:2], b[0:2]) 11 self.assertEqual(a[0:2:], b[0:2:]) 12 self.assertEqual(len(a), len(b)) 13 self.assertEqual(a[5:7], b[5:7]) 14 self.assertEqual(a[5:7:], b[5:7:]) 15 self.assertEqual(a[-1], b[-1]) 16 self.assertEqual(a[:], b[:]) 17 self.assertEqual(a[::], b[::]) 18 self.assertEqual(a[10::-1], b[10::-1]) 19 self.assertEqual(a[30:20:-1], b[30:20:-1]) 20 self.assertEqual(a[:12:6], b[:12:6]) 21 self.assertEqual(a[2:6:4], b[2:6:4]) 22 23 a[0:5] = range(5, 10) 24 self.assertEqual(a[0:5], range(5, 10)) 25 self.assertEqual(a[0:5:], range(5, 10)) 26 self.assertEqual(a[4::-1], range(9, 4, -1)) 27 28 def test_setslice_cint(self): 29 a = (c_int * 100)(*xrange(1100, 1200)) 30 b = range(1100, 1200) 31 32 a[32:47] = range(32, 47) 33 self.assertEqual(a[32:47], range(32, 47)) 34 a[32:47] = range(132, 147) 35 self.assertEqual(a[32:47:], range(132, 147)) 36 a[46:31:-1] = range(232, 247) 37 self.assertEqual(a[32:47:1], range(246, 231, -1)) 38 39 a[32:47] = range(1132, 1147) 40 self.assertEqual(a[:], b) 41 a[32:47:7] = range(3) 42 b[32:47:7] = range(3) 43 self.assertEqual(a[:], b) 44 a[33::-3] = range(12) 45 b[33::-3] = range(12) 46 self.assertEqual(a[:], b) 47 48 from operator import setslice, setitem 49 50 # TypeError: int expected instead of str instance 51 self.assertRaises(TypeError, setslice, a, 0, 5, "abcde") 52 self.assertRaises(TypeError, setitem, a, slice(0, 5), "abcde") 53 # TypeError: int expected instead of str instance 54 self.assertRaises(TypeError, setslice, a, 0, 5, ["a", "b", "c", "d", "e"]) 55 self.assertRaises(TypeError, setitem, a, slice(0, 5), 56 ["a", "b", "c", "d", "e"]) 57 # TypeError: int expected instead of float instance 58 self.assertRaises(TypeError, setslice, a, 0, 5, [1, 2, 3, 4, 3.14]) 59 self.assertRaises(TypeError, setitem, a, slice(0, 5), 60 [1, 2, 3, 4, 3.14]) 61 # ValueError: Can only assign sequence of same size 62 self.assertRaises(ValueError, setslice, a, 0, 5, range(32)) 63 self.assertRaises(ValueError, setitem, a, slice(0, 5), range(32)) 64 65 def test_char_ptr(self): 66 s = "abcdefghijklmnopqrstuvwxyz" 67 68 dll = CDLL(_ctypes_test.__file__) 69 dll.my_strdup.restype = POINTER(c_char) 70 dll.my_free.restype = None 71 res = dll.my_strdup(s) 72 self.assertEqual(res[:len(s)], s) 73 self.assertEqual(res[:3], s[:3]) 74 self.assertEqual(res[:len(s):], s) 75 self.assertEqual(res[len(s)-1:-1:-1], s[::-1]) 76 self.assertEqual(res[len(s)-1:5:-7], s[:5:-7]) 77 self.assertEqual(res[0:-1:-1], s[0::-1]) 78 79 import operator 80 self.assertRaises(ValueError, operator.getitem, 81 res, slice(None, None, None)) 82 self.assertRaises(ValueError, operator.getitem, 83 res, slice(0, None, None)) 84 self.assertRaises(ValueError, operator.getitem, 85 res, slice(None, 5, -1)) 86 self.assertRaises(ValueError, operator.getitem, 87 res, slice(-5, None, None)) 88 89 self.assertRaises(TypeError, operator.setslice, 90 res, 0, 5, u"abcde") 91 self.assertRaises(TypeError, operator.setitem, 92 res, slice(0, 5), u"abcde") 93 dll.my_free(res) 94 95 dll.my_strdup.restype = POINTER(c_byte) 96 res = dll.my_strdup(s) 97 self.assertEqual(res[:len(s)], range(ord("a"), ord("z")+1)) 98 self.assertEqual(res[:len(s):], range(ord("a"), ord("z")+1)) 99 dll.my_free(res) 100 101 def test_char_ptr_with_free(self): 102 dll = CDLL(_ctypes_test.__file__) 103 s = "abcdefghijklmnopqrstuvwxyz" 104 105 class allocated_c_char_p(c_char_p): 106 pass 107 108 dll.my_free.restype = None 109 def errcheck(result, func, args): 110 retval = result.value 111 dll.my_free(result) 112 return retval 113 114 dll.my_strdup.restype = allocated_c_char_p 115 dll.my_strdup.errcheck = errcheck 116 try: 117 res = dll.my_strdup(s) 118 self.assertEqual(res, s) 119 finally: 120 del dll.my_strdup.errcheck 121 122 123 def test_char_array(self): 124 s = "abcdefghijklmnopqrstuvwxyz\0" 125 126 p = (c_char * 27)(*s) 127 self.assertEqual(p[:], s) 128 self.assertEqual(p[::], s) 129 self.assertEqual(p[::-1], s[::-1]) 130 self.assertEqual(p[5::-2], s[5::-2]) 131 self.assertEqual(p[2:5:-3], s[2:5:-3]) 132 133 134 try: 135 c_wchar 136 except NameError: 137 pass 138 else: 139 def test_wchar_ptr(self): 140 s = u"abcdefghijklmnopqrstuvwxyz\0" 141 142 dll = CDLL(_ctypes_test.__file__) 143 dll.my_wcsdup.restype = POINTER(c_wchar) 144 dll.my_wcsdup.argtypes = POINTER(c_wchar), 145 dll.my_free.restype = None 146 res = dll.my_wcsdup(s) 147 self.assertEqual(res[:len(s)], s) 148 self.assertEqual(res[:len(s):], s) 149 self.assertEqual(res[len(s)-1:-1:-1], s[::-1]) 150 self.assertEqual(res[len(s)-1:5:-7], s[:5:-7]) 151 152 import operator 153 self.assertRaises(TypeError, operator.setslice, 154 res, 0, 5, u"abcde") 155 self.assertRaises(TypeError, operator.setitem, 156 res, slice(0, 5), u"abcde") 157 dll.my_free(res) 158 159 if sizeof(c_wchar) == sizeof(c_short): 160 dll.my_wcsdup.restype = POINTER(c_short) 161 elif sizeof(c_wchar) == sizeof(c_int): 162 dll.my_wcsdup.restype = POINTER(c_int) 163 elif sizeof(c_wchar) == sizeof(c_long): 164 dll.my_wcsdup.restype = POINTER(c_long) 165 else: 166 return 167 res = dll.my_wcsdup(s) 168 tmpl = range(ord("a"), ord("z")+1) 169 self.assertEqual(res[:len(s)-1], tmpl) 170 self.assertEqual(res[:len(s)-1:], tmpl) 171 self.assertEqual(res[len(s)-2:-1:-1], tmpl[::-1]) 172 self.assertEqual(res[len(s)-2:5:-7], tmpl[:5:-7]) 173 dll.my_free(res) 174 175 ################################################################ 176 177 if __name__ == "__main__": 178 unittest.main() 179
