optionalg
diff --git a/‎codext/__common__.py‎
Lines changed: 8 additions & 3 deletions b/‎codext/__common__.py‎
Lines changed: 8 additions & 3 deletions
diff --git a/‎tests/test_generated.py‎
Lines changed: 4 additions & 0 deletions b/‎tests/test_generated.py‎
Lines changed: 4 additions & 0 deletions
@@ -29,9 +29,9 @@
 
 
 __all__ = ["add", "add_map", "b", "clear", "codecs", "decode", "encode", "ensure_str", "examples", "guess",
-           "generate_strings_from_regex", "get_alphabet_from_mask", "handle_error", "list_categories", "list_encodings",
-           "lookup", "maketrans", "rank", "re", "register", "remove", "reset", "s2i", "search", "stopfunc", "BytesIO",
-           "MASKS", "PY3"]
+           "generate_strings_from_regex", "get_alphabet_from_mask", "handle_error", "is_native", "list_categories",
+           "list_encodings", "lookup", "maketrans", "rank", "re", "register", "remove", "reset", "s2i", "search",
+           "stopfunc", "BytesIO", "MASKS", "PY3"]
 CODECS_REGISTRY = None
 MASKS = {
     'a': printable,
@@ -439,6 +439,11 @@ def examples(encoding, number=10):
 codecs.examples = examples
 
 
+def is_native(encoding):
+    """ Determine if a given encoding is native or not. """
+    return codecs.lookup(encoding).parameters['category'] == "native"
+
+
 def list_categories():
     """ Get a list of all codec categories. """
     c = ["native"]
 
@@ -6,6 +6,7 @@
 import os
 import re
 from itertools import chain
+from random import randint
 from string import printable
 from unittest import TestCase
 
@@ -71,6 +72,9 @@ def _template(self):
                     # examples validation tests
                     if k.startswith("enc-dec") and isinstance(examples, list):
                         for s in examples:
+                            rd = re.match(r"\@random(?:\{(\d+)\})?$", s)
+                            if rd:
+                                s = "".join(chr(randint(0, 255)) for i in range(int(rd.group(1) or "512")))
                             self.assertEqual(icdec(f2(icenc(f1(s, ename)), ename)), icdec(s))
                             self.assertEqual(icdec(f2(icenc(f1(b(s), ename)), ename)), b(icdec(s)))
                             # file tests