test_unicode.py 文件源码

def test_buffers(self):
            ctypes.set_conversion_mode("ascii", "strict")
            buf = ctypes.create_unicode_buffer("abc")
            self.assertEqual(len(buf), 3+1)

            ctypes.set_conversion_mode("ascii", "replace")
            buf = ctypes.create_unicode_buffer("ab")
            self.assertEqual(buf[:], u"ab\uFFFD\uFFFD\uFFFD\0")
            self.assertEqual(buf[::], u"ab\uFFFD\uFFFD\uFFFD\0")
            self.assertEqual(buf[::-1], u"\0\uFFFD\uFFFD\uFFFDba")
            self.assertEqual(buf[::2], u"a\uFFFD\uFFFD")
            self.assertEqual(buf[6:5:-1], u"")

            ctypes.set_conversion_mode("ascii", "ignore")
            buf = ctypes.create_unicode_buffer("ab")
            # is that correct? not sure.  But with 'ignore', you get what you pay for..
            self.assertEqual(buf[:], u"ab\0\0\0\0")
            self.assertEqual(buf[::], u"ab\0\0\0\0")
            self.assertEqual(buf[::-1], u"\0\0\0\0ba")
            self.assertEqual(buf[::2], u"a\0\0")
            self.assertEqual(buf[6:5:-1], u"")