Stats processing: don`t create file names that are too long

sitescripts/stats/test/common.py

 # coding: utf-8
 
 # This file is part of the Adblock Plus web scripts,
 # Copyright (C) 2006-2013 Eyeo GmbH
 #
 # Adblock Plus is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 3 as
 # published by the Free Software Foundation.
 #
 # Adblock Plus is distributed in the hope that it will be useful,
@@ skipping 13 matching lines @@
   maxDiff = None
 
   def test_fileencoding(self):
     tests = [
       ("foo_bar", True),
       ("1234.txt", True),
       ("xYz.DAT", True),
       ("foo/bar.txt", False),
       ("foo/bar+bas-xyz.txt", False),
       (u"foo\u1234-bar\u4321", False),
+      ("foobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobar", u"foobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobarfoobar\u2026")
     ]
     for name, expect_identical in tests:
       path = common.filename_encode(name)
-      if expect_identical:
+      if expect_identical == True:
         self.assertEqual(path, name, "Encoding '%s' shouldn't change string" % name)
       else:
         self.assertTrue(re.match(r"^[\w\.\-]*$", path), "Encoding '%s' should replace all special characters" % name)
-      self.assertEqual(common.filename_decode(path), name, "Encoding and decoding '%s' should produce the original string" % name)
+
+      if isinstance(expect_identical, basestring):
+        self.assertEqual(common.filename_decode(path), expect_identical, "Encoding and decoding '%s' should produce a truncated string as result" % name)
+      else:
+        self.assertEqual(common.filename_decode(path), name, "Encoding and decoding '%s' should produce the original string" % name)
 
 if __name__ == '__main__':
   unittest.main()