| from ctypes import * |
| from ctypes.test import need_symbol |
| import unittest |
| |
| class StringBufferTestCase(unittest.TestCase): |
| |
| def test_buffer(self): |
| b = create_string_buffer(32) |
| self.assertEqual(len(b), 32) |
| self.assertEqual(sizeof(b), 32 * sizeof(c_char)) |
| self.assertIs(type(b[0]), str) |
| |
| b = create_string_buffer("abc") |
| self.assertEqual(len(b), 4) # trailing nul char |
| self.assertEqual(sizeof(b), 4 * sizeof(c_char)) |
| self.assertIs(type(b[0]), str) |
| self.assertEqual(b[0], "a") |
| self.assertEqual(b[:], "abc\0") |
| self.assertEqual(b[::], "abc\0") |
| self.assertEqual(b[::-1], "\0cba") |
| self.assertEqual(b[::2], "ac") |
| self.assertEqual(b[::5], "a") |
| |
| def test_buffer_interface(self): |
| self.assertEqual(len(bytearray(create_string_buffer(0))), 0) |
| self.assertEqual(len(bytearray(create_string_buffer(1))), 1) |
| |
| def test_string_conversion(self): |
| b = create_string_buffer(u"abc") |
| self.assertEqual(len(b), 4) # trailing nul char |
| self.assertEqual(sizeof(b), 4 * sizeof(c_char)) |
| self.assertTrue(type(b[0]) is str) |
| self.assertEqual(b[0], "a") |
| self.assertEqual(b[:], "abc\0") |
| self.assertEqual(b[::], "abc\0") |
| self.assertEqual(b[::-1], "\0cba") |
| self.assertEqual(b[::2], "ac") |
| self.assertEqual(b[::5], "a") |
| |
| @need_symbol('c_wchar') |
| def test_unicode_buffer(self): |
| b = create_unicode_buffer(32) |
| self.assertEqual(len(b), 32) |
| self.assertEqual(sizeof(b), 32 * sizeof(c_wchar)) |
| self.assertIs(type(b[0]), unicode) |
| |
| b = create_unicode_buffer(u"abc") |
| self.assertEqual(len(b), 4) # trailing nul char |
| self.assertEqual(sizeof(b), 4 * sizeof(c_wchar)) |
| self.assertIs(type(b[0]), unicode) |
| self.assertEqual(b[0], u"a") |
| self.assertEqual(b[:], "abc\0") |
| self.assertEqual(b[::], "abc\0") |
| self.assertEqual(b[::-1], "\0cba") |
| self.assertEqual(b[::2], "ac") |
| self.assertEqual(b[::5], "a") |
| |
| @need_symbol('c_wchar') |
| def test_unicode_conversion(self): |
| b = create_unicode_buffer("abc") |
| self.assertEqual(len(b), 4) # trailing nul char |
| self.assertEqual(sizeof(b), 4 * sizeof(c_wchar)) |
| self.assertIs(type(b[0]), unicode) |
| self.assertEqual(b[0], u"a") |
| self.assertEqual(b[:], "abc\0") |
| self.assertEqual(b[::], "abc\0") |
| self.assertEqual(b[::-1], "\0cba") |
| self.assertEqual(b[::2], "ac") |
| self.assertEqual(b[::5], "a") |
| |
| if __name__ == "__main__": |
| unittest.main() |
