| import unittest | 
 | from test import test_support | 
 | import base64 | 
 |  | 
 | class Base64TestCase(unittest.TestCase): | 
 |  | 
 |     def test_encodestring(self): | 
 |         self.assertEqual(base64.encodestring("www.python.org"), "d3d3LnB5dGhvbi5vcmc=\n") | 
 |         self.assertEqual(base64.encodestring("a"), "YQ==\n") | 
 |         self.assertEqual(base64.encodestring("ab"), "YWI=\n") | 
 |         self.assertEqual(base64.encodestring("abc"), "YWJj\n") | 
 |         self.assertEqual(base64.encodestring(""), "") | 
 |         self.assertEqual(base64.encodestring("abcdefghijklmnopqrstuvwxyz" | 
 |                            "ABCDEFGHIJKLMNOPQRSTUVWXYZ" | 
 |                            "0123456789!@#0^&*();:<>,. []{}"), | 
 |               "YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eXpBQkNE" | 
 |               "RUZHSElKS0xNTk9QUVJTVFVWV1hZWjAxMjM0\nNT" | 
 |               "Y3ODkhQCMwXiYqKCk7Ojw+LC4gW117fQ==\n") | 
 |  | 
 |     def test_decodestring(self): | 
 |         self.assertEqual(base64.decodestring("d3d3LnB5dGhvbi5vcmc=\n"), "www.python.org") | 
 |         self.assertEqual(base64.decodestring("YQ==\n"), "a") | 
 |         self.assertEqual(base64.decodestring("YWI=\n"), "ab") | 
 |         self.assertEqual(base64.decodestring("YWJj\n"), "abc") | 
 |         self.assertEqual(base64.decodestring("YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eXpBQkNE" | 
 |                            "RUZHSElKS0xNTk9QUVJTVFVWV1hZWjAxMjM0\nNT" | 
 |                            "Y3ODkhQCMwXiYqKCk7Ojw+LC4gW117fQ==\n"), | 
 |               "abcdefghijklmnopqrstuvwxyz" | 
 |               "ABCDEFGHIJKLMNOPQRSTUVWXYZ" | 
 |               "0123456789!@#0^&*();:<>,. []{}") | 
 |         self.assertEqual(base64.decodestring(''), '') | 
 |  | 
 | def test_main(): | 
 |     test_support.run_unittest(Base64TestCase) | 
 |  | 
 | if __name__ == "__main__": | 
 |     test_main() |