1 import unittest 2 from ctypes import * 3 from ctypes.test import need_symbol 4 5 import _ctypes_test 6 7 class SlicesTestCase(unittest.TestCase): 8 def test_getslice_cint(self): 9 a = (c_int * 100)(*xrange(1100, 1200)) 10 b = range(1100, 1200) 11 self.assertEqual(a[0:2], b[0:2]) 12 self.assertEqual(a[0:2:], b[0:2:]) 13 self.assertEqual(len(a), len(b)) 14 self.assertEqual(a[5:7], b[5:7]) 15 self.assertEqual(a[5:7:], b[5:7:]) 16 self.assertEqual(a[-1], b[-1]) 17 self.assertEqual(a[:], b[:]) 18 self.assertEqual(a[::], b[::]) 19 self.assertEqual(a[10::-1], b[10::-1]) 20 self.assertEqual(a[30:20:-1], b[30:20:-1]) 21 self.assertEqual(a[:12:6], b[:12:6]) 22 self.assertEqual(a[2:6:4], b[2:6:4]) 23 24 a[0:5] = range(5, 10) 25 self.assertEqual(a[0:5], range(5, 10)) 26 self.assertEqual(a[0:5:], range(5, 10)) 27 self.assertEqual(a[4::-1], range(9, 4, -1)) 28 29 def test_setslice_cint(self): 30 a = (c_int * 100)(*xrange(1100, 1200)) 31 b = range(1100, 1200) 32 33 a[32:47] = range(32, 47) 34 self.assertEqual(a[32:47], range(32, 47)) 35 a[32:47] = range(132, 147) 36 self.assertEqual(a[32:47:], range(132, 147)) 37 a[46:31:-1] = range(232, 247) 38 self.assertEqual(a[32:47:1], range(246, 231, -1)) 39 40 a[32:47] = range(1132, 1147) 41 self.assertEqual(a[:], b) 42 a[32:47:7] = range(3) 43 b[32:47:7] = range(3) 44 self.assertEqual(a[:], b) 45 a[33::-3] = range(12) 46 b[33::-3] = range(12) 47 self.assertEqual(a[:], b) 48 49 from operator import setslice, setitem 50 51 # TypeError: int expected instead of str instance 52 self.assertRaises(TypeError, setslice, a, 0, 5, "abcde") 53 self.assertRaises(TypeError, setitem, a, slice(0, 5), "abcde") 54 # TypeError: int expected instead of str instance 55 self.assertRaises(TypeError, setslice, a, 0, 5, ["a", "b", "c", "d", "e"]) 56 self.assertRaises(TypeError, setitem, a, slice(0, 5), 57 ["a", "b", "c", "d", "e"]) 58 # TypeError: int expected instead of float instance 59 self.assertRaises(TypeError, setslice, a, 0, 5, [1, 2, 3, 4, 3.14]) 60 self.assertRaises(TypeError, setitem, a, slice(0, 5), 61 [1, 2, 3, 4, 3.14]) 62 # ValueError: Can only assign sequence of same size 63 self.assertRaises(ValueError, setslice, a, 0, 5, range(32)) 64 self.assertRaises(ValueError, setitem, a, slice(0, 5), range(32)) 65 66 def test_char_ptr(self): 67 s = "abcdefghijklmnopqrstuvwxyz" 68 69 dll = CDLL(_ctypes_test.__file__) 70 dll.my_strdup.restype = POINTER(c_char) 71 dll.my_free.restype = None 72 res = dll.my_strdup(s) 73 self.assertEqual(res[:len(s)], s) 74 self.assertEqual(res[:3], s[:3]) 75 self.assertEqual(res[:len(s):], s) 76 self.assertEqual(res[len(s)-1:-1:-1], s[::-1]) 77 self.assertEqual(res[len(s)-1:5:-7], s[:5:-7]) 78 self.assertEqual(res[0:-1:-1], s[0::-1]) 79 80 import operator 81 self.assertRaises(ValueError, operator.getitem, 82 res, slice(None, None, None)) 83 self.assertRaises(ValueError, operator.getitem, 84 res, slice(0, None, None)) 85 self.assertRaises(ValueError, operator.getitem, 86 res, slice(None, 5, -1)) 87 self.assertRaises(ValueError, operator.getitem, 88 res, slice(-5, None, None)) 89 90 self.assertRaises(TypeError, operator.setslice, 91 res, 0, 5, u"abcde") 92 self.assertRaises(TypeError, operator.setitem, 93 res, slice(0, 5), u"abcde") 94 dll.my_free(res) 95 96 dll.my_strdup.restype = POINTER(c_byte) 97 res = dll.my_strdup(s) 98 self.assertEqual(res[:len(s)], range(ord("a"), ord("z")+1)) 99 self.assertEqual(res[:len(s):], range(ord("a"), ord("z")+1)) 100 dll.my_free(res) 101 102 def test_char_ptr_with_free(self): 103 dll = CDLL(_ctypes_test.__file__) 104 s = "abcdefghijklmnopqrstuvwxyz" 105 106 class allocated_c_char_p(c_char_p): 107 pass 108 109 dll.my_free.restype = None 110 def errcheck(result, func, args): 111 retval = result.value 112 dll.my_free(result) 113 return retval 114 115 dll.my_strdup.restype = allocated_c_char_p 116 dll.my_strdup.errcheck = errcheck 117 try: 118 res = dll.my_strdup(s) 119 self.assertEqual(res, s) 120 finally: 121 del dll.my_strdup.errcheck 122 123 124 def test_char_array(self): 125 s = "abcdefghijklmnopqrstuvwxyz\0" 126 127 p = (c_char * 27)(*s) 128 self.assertEqual(p[:], s) 129 self.assertEqual(p[::], s) 130 self.assertEqual(p[::-1], s[::-1]) 131 self.assertEqual(p[5::-2], s[5::-2]) 132 self.assertEqual(p[2:5:-3], s[2:5:-3]) 133 134 135 @need_symbol('c_wchar') 136 def test_wchar_ptr(self): 137 s = u"abcdefghijklmnopqrstuvwxyz\0" 138 139 dll = CDLL(_ctypes_test.__file__) 140 dll.my_wcsdup.restype = POINTER(c_wchar) 141 dll.my_wcsdup.argtypes = POINTER(c_wchar), 142 dll.my_free.restype = None 143 res = dll.my_wcsdup(s) 144 self.assertEqual(res[:len(s)], s) 145 self.assertEqual(res[:len(s):], s) 146 self.assertEqual(res[len(s)-1:-1:-1], s[::-1]) 147 self.assertEqual(res[len(s)-1:5:-7], s[:5:-7]) 148 149 import operator 150 self.assertRaises(TypeError, operator.setslice, 151 res, 0, 5, u"abcde") 152 self.assertRaises(TypeError, operator.setitem, 153 res, slice(0, 5), u"abcde") 154 dll.my_free(res) 155 156 if sizeof(c_wchar) == sizeof(c_short): 157 dll.my_wcsdup.restype = POINTER(c_short) 158 elif sizeof(c_wchar) == sizeof(c_int): 159 dll.my_wcsdup.restype = POINTER(c_int) 160 elif sizeof(c_wchar) == sizeof(c_long): 161 dll.my_wcsdup.restype = POINTER(c_long) 162 else: 163 self.skipTest('Pointers to c_wchar are not supported') 164 res = dll.my_wcsdup(s) 165 tmpl = range(ord("a"), ord("z")+1) 166 self.assertEqual(res[:len(s)-1], tmpl) 167 self.assertEqual(res[:len(s)-1:], tmpl) 168 self.assertEqual(res[len(s)-2:-1:-1], tmpl[::-1]) 169 self.assertEqual(res[len(s)-2:5:-7], tmpl[:5:-7]) 170 dll.my_free(res) 171 172 ################################################################ 173 174 if __name__ == "__main__": 175 unittest.main() 176
