.hexencode, .hexdecode, .hexdecod

[pyderasn.git] / tests / test_pyderasn.py

diff --git a/tests/test_pyderasn.py b/tests/test_pyderasn.py
index 9fbb33eb39f2d75231721cee73de95a32d66d717..1a7ed2c488f713e9af4b79a174816546547fc957 100644 (file)
--- a/tests/test_pyderasn.py
+++ b/tests/test_pyderasn.py
@@ -15,12 +15,15 @@
 # License along with this program.  If not, see
 # <http://www.gnu.org/licenses/>.
 
+from copy import copy
 from copy import deepcopy
 from datetime import datetime
+from importlib import import_module
 from string import ascii_letters
 from string import digits
 from string import printable
 from string import whitespace
+from time import time
 from unittest import TestCase
 
 from hypothesis import assume
@@ -51,6 +54,9 @@ from six import iterbytes
 from six import PY2
 from six import text_type
 from six import unichr as six_unichr
+from six.moves.cPickle import dumps as pickle_dumps
+from six.moves.cPickle import HIGHEST_PROTOCOL as pickle_proto
+from six.moves.cPickle import loads as pickle_loads
 
 from pyderasn import _pp
 from pyderasn import abs_decode_path
@@ -134,6 +140,18 @@ decode_path_strat = lists(integers(), max_size=3).map(
     lambda decode_path: tuple(str(dp) for dp in decode_path)
 )
 ctx_dummy = dictionaries(integers(), integers(), min_size=2, max_size=4).example()
+copy_funcs = (
+    copy,
+    lambda obj: pickle_loads(pickle_dumps(obj, pickle_proto)),
+)
+self_module = import_module(__name__)
+
+
+def register_class(klass):
+    klassname = klass.__name__ + str(time()).replace(".", "")
+    klass.__name__ = klassname
+    klass.__qualname__ = klassname
+    setattr(self_module, klassname, klass)
 
 
 def assert_exceeding_data(self, call, junk):
@@ -456,8 +474,9 @@ class TestBoolean(CommonMixin, TestCase):
     def test_copy(self, values):
         for klass in (Boolean, BooleanInherited):
             obj = klass(*values)
-            obj_copied = obj.copy()
-            self.assert_copied_basic_fields(obj, obj_copied)
+            for copy_func in copy_funcs:
+                obj_copied = copy_func(obj)
+                self.assert_copied_basic_fields(obj, obj_copied)
 
     @given(
         booleans(),
@@ -568,10 +587,10 @@ class TestBoolean(CommonMixin, TestCase):
             repr(obj_expled)
             list(obj_expled.pps())
             pprint(obj_expled, big_blobs=True, with_decode_path=True)
-            obj_expled_encoded = obj_expled.encode()
+            obj_expled_hex_encoded = obj_expled.hexencode()
             ctx_copied = deepcopy(ctx_dummy)
-            obj_decoded, tail = obj_expled.decode(
-                obj_expled_encoded + tail_junk,
+            obj_decoded, tail = obj_expled.hexdecode(
+                obj_expled_hex_encoded + hexenc(tail_junk),
                 offset=offset,
                 ctx=ctx_copied,
             )
@@ -584,7 +603,7 @@ class TestBoolean(CommonMixin, TestCase):
             self.assertNotEqual(obj_decoded, obj)
             self.assertEqual(bool(obj_decoded), bool(obj_expled))
             self.assertEqual(bool(obj_decoded), bool(obj))
-            self.assertSequenceEqual(obj_decoded.encode(), obj_expled_encoded)
+            self.assertSequenceEqual(obj_decoded.hexencode(), obj_expled_hex_encoded)
             self.assertSequenceEqual(obj_decoded.expl_tag, tag_expl)
             self.assertEqual(obj_decoded.expl_tlen, len(tag_expl))
             self.assertEqual(
@@ -600,7 +619,7 @@ class TestBoolean(CommonMixin, TestCase):
             self.assertEqual(obj_decoded.expl_offset, offset)
             assert_exceeding_data(
                 self,
-                lambda: obj_expled.decod(obj_expled_encoded + tail_junk),
+                lambda: obj_expled.hexdecod(obj_expled_hex_encoded + hexenc(tail_junk)),
                 tail_junk,
             )
 
@@ -633,7 +652,7 @@ class TestBoolean(CommonMixin, TestCase):
         self.assertTrue(obj.ber_encoded)
         self.assertFalse(obj.lenindef)
         self.assertTrue(obj.bered)
-        obj = obj.copy()
+        obj = copy(obj)
         self.assertTrue(obj.ber_encoded)
         self.assertFalse(obj.lenindef)
         self.assertTrue(obj.bered)
@@ -656,7 +675,7 @@ class TestBoolean(CommonMixin, TestCase):
         self.assertFalse(obj.lenindef)
         self.assertFalse(obj.ber_encoded)
         self.assertTrue(obj.bered)
-        obj = obj.copy()
+        obj = copy(obj)
         self.assertTrue(obj.expl_lenindef)
         self.assertFalse(obj.lenindef)
         self.assertFalse(obj.ber_encoded)
@@ -954,12 +973,13 @@ class TestInteger(CommonMixin, TestCase):
     def test_copy(self, values):
         for klass in (Integer, IntegerInherited):
             obj = klass(*values)
-            obj_copied = obj.copy()
-            self.assert_copied_basic_fields(obj, obj_copied)
-            self.assertEqual(obj.specs, obj_copied.specs)
-            self.assertEqual(obj._bound_min, obj_copied._bound_min)
-            self.assertEqual(obj._bound_max, obj_copied._bound_max)
-            self.assertEqual(obj._value, obj_copied._value)
+            for copy_func in copy_funcs:
+                obj_copied = copy_func(obj)
+                self.assert_copied_basic_fields(obj, obj_copied)
+                self.assertEqual(obj.specs, obj_copied.specs)
+                self.assertEqual(obj._bound_min, obj_copied._bound_min)
+                self.assertEqual(obj._bound_max, obj_copied._bound_max)
+                self.assertEqual(obj._value, obj_copied._value)
 
     @given(
         integers(),
@@ -1359,6 +1379,7 @@ class TestBitString(CommonMixin, TestCase):
 
             class BS(klass):
                 schema = _schema
+            register_class(BS)
             obj = BS(
                 value=value,
                 impl=impl,
@@ -1367,10 +1388,11 @@ class TestBitString(CommonMixin, TestCase):
                 optional=optional or False,
                 _decoded=_decoded,
             )
-            obj_copied = obj.copy()
-            self.assert_copied_basic_fields(obj, obj_copied)
-            self.assertEqual(obj.specs, obj_copied.specs)
-            self.assertEqual(obj._value, obj_copied._value)
+            for copy_func in copy_funcs:
+                obj_copied = copy_func(obj)
+                self.assert_copied_basic_fields(obj, obj_copied)
+                self.assertEqual(obj.specs, obj_copied.specs)
+                self.assertEqual(obj._value, obj_copied._value)
 
     @given(
         binary(),
@@ -1614,7 +1636,7 @@ class TestBitString(CommonMixin, TestCase):
             self.assertTrue(obj.ber_encoded)
             self.assertEqual(obj.lenindef, lenindef_expected)
             self.assertTrue(obj.bered)
-            obj = obj.copy()
+            obj = copy(obj)
             self.assertTrue(obj.ber_encoded)
             self.assertEqual(obj.lenindef, lenindef_expected)
             self.assertTrue(obj.bered)
@@ -1750,7 +1772,7 @@ class TestBitString(CommonMixin, TestCase):
         self.assertTrue(obj.ber_encoded)
         self.assertTrue(obj.lenindef)
         self.assertTrue(obj.bered)
-        obj = obj.copy()
+        obj = copy(obj)
         self.assertTrue(obj.ber_encoded)
         self.assertTrue(obj.lenindef)
         self.assertTrue(obj.bered)
@@ -1947,11 +1969,12 @@ class TestOctetString(CommonMixin, TestCase):
     def test_copy(self, values):
         for klass in (OctetString, OctetStringInherited):
             obj = klass(*values)
-            obj_copied = obj.copy()
-            self.assert_copied_basic_fields(obj, obj_copied)
-            self.assertEqual(obj._bound_min, obj_copied._bound_min)
-            self.assertEqual(obj._bound_max, obj_copied._bound_max)
-            self.assertEqual(obj._value, obj_copied._value)
+            for copy_func in copy_funcs:
+                obj_copied = copy_func(obj)
+                self.assert_copied_basic_fields(obj, obj_copied)
+                self.assertEqual(obj._bound_min, obj_copied._bound_min)
+                self.assertEqual(obj._bound_max, obj_copied._bound_max)
+                self.assertEqual(obj._value, obj_copied._value)
 
     @given(
         binary(),
@@ -2146,7 +2169,7 @@ class TestOctetString(CommonMixin, TestCase):
             self.assertTrue(obj.ber_encoded)
             self.assertEqual(obj.lenindef, lenindef_expected)
             self.assertTrue(obj.bered)
-            obj = obj.copy()
+            obj = copy(obj)
             self.assertTrue(obj.ber_encoded)
             self.assertEqual(obj.lenindef, lenindef_expected)
             self.assertTrue(obj.bered)
@@ -2286,8 +2309,9 @@ class TestNull(CommonMixin, TestCase):
                 optional=optional or False,
                 _decoded=_decoded,
             )
-            obj_copied = obj.copy()
-            self.assert_copied_basic_fields(obj, obj_copied)
+            for copy_func in copy_funcs:
+                obj_copied = copy_func(obj)
+                self.assert_copied_basic_fields(obj, obj_copied)
 
     @given(integers(min_value=1).map(tag_encode))
     def test_stripped(self, tag_impl):
@@ -2562,9 +2586,10 @@ class TestObjectIdentifier(CommonMixin, TestCase):
                 optional=optional,
                 _decoded=_decoded,
             )
-            obj_copied = obj.copy()
-            self.assert_copied_basic_fields(obj, obj_copied)
-            self.assertEqual(obj._value, obj_copied._value)
+            for copy_func in copy_funcs:
+                obj_copied = copy_func(obj)
+                self.assert_copied_basic_fields(obj, obj_copied)
+                self.assertEqual(obj._value, obj_copied._value)
 
     @settings(max_examples=LONG_TEST_MAX_EXAMPLES)
     @given(
@@ -2788,7 +2813,7 @@ class TestObjectIdentifier(CommonMixin, TestCase):
         obj, _ = ObjectIdentifier().decode(tampered, ctx={"bered": True})
         self.assertTrue(obj.ber_encoded)
         self.assertTrue(obj.bered)
-        obj = obj.copy()
+        obj = copy(obj)
         self.assertTrue(obj.ber_encoded)
         self.assertTrue(obj.bered)
         with assertRaisesRegex(self, DecodeError, "non normalized arc encoding"):
@@ -2821,7 +2846,7 @@ class TestObjectIdentifier(CommonMixin, TestCase):
         obj, _ = ObjectIdentifier().decode(tampered, ctx={"bered": True})
         self.assertTrue(obj.ber_encoded)
         self.assertTrue(obj.bered)
-        obj = obj.copy()
+        obj = copy(obj)
         self.assertTrue(obj.ber_encoded)
         self.assertTrue(obj.bered)
         with assertRaisesRegex(self, DecodeError, "non normalized arc encoding"):
@@ -3007,6 +3032,7 @@ class TestEnumerated(CommonMixin, TestCase):
 
         class E(Enumerated):
             schema = schema_input
+        register_class(E)
         obj = E(
             value=value,
             impl=impl,
@@ -3015,9 +3041,10 @@ class TestEnumerated(CommonMixin, TestCase):
             optional=optional,
             _decoded=_decoded,
         )
-        obj_copied = obj.copy()
-        self.assert_copied_basic_fields(obj, obj_copied)
-        self.assertEqual(obj.specs, obj_copied.specs)
+        for copy_func in copy_funcs:
+            obj_copied = copy_func(obj)
+            self.assert_copied_basic_fields(obj, obj_copied)
+            self.assertEqual(obj.specs, obj_copied.specs)
 
     @settings(max_examples=LONG_TEST_MAX_EXAMPLES)
     @given(data_strategy())
@@ -3281,11 +3308,12 @@ class StringMixin(object):
     def test_copy(self, d):
         values = d.draw(string_values_strategy(self.text_alphabet()))
         obj = self.base_klass(*values)
-        obj_copied = obj.copy()
-        self.assert_copied_basic_fields(obj, obj_copied)
-        self.assertEqual(obj._bound_min, obj_copied._bound_min)
-        self.assertEqual(obj._bound_max, obj_copied._bound_max)
-        self.assertEqual(obj._value, obj_copied._value)
+        for copy_func in copy_funcs:
+            obj_copied = copy_func(obj)
+            self.assert_copied_basic_fields(obj, obj_copied)
+            self.assertEqual(obj._bound_min, obj_copied._bound_min)
+            self.assertEqual(obj._bound_max, obj_copied._bound_max)
+            self.assertEqual(obj._value, obj_copied._value)
 
     @given(data_strategy())
     def test_stripped(self, d):
@@ -3506,6 +3534,29 @@ class TestPrintableString(
         self.assertEqual(err.exception.offset, offset)
         self.assertEqual(err.exception.decode_path, decode_path)
 
+    def test_allowable_invalid_chars(self):
+        for c, kwargs in (
+                ("*", {"allow_asterisk": True}),
+                ("&", {"allow_ampersand": True}),
+                ("&*", {"allow_asterisk": True, "allow_ampersand": True}),
+        ):
+            s = "hello invalid"
+            obj = self.base_klass(s)
+            for prop in kwargs.keys():
+                self.assertFalse(getattr(obj, prop))
+            s += c
+            with assertRaisesRegex(self, DecodeError, "non-printable"):
+                self.base_klass(s)
+            self.base_klass(s, **kwargs)
+            klass = self.base_klass(**kwargs)
+            obj = klass(s)
+            for prop in kwargs.keys():
+                self.assertTrue(getattr(obj, prop))
+            obj = copy(obj)
+            obj(s)
+            for prop in kwargs.keys():
+                self.assertTrue(getattr(obj, prop))
+
 
 class TestTeletexString(
         UnicodeDecodeErrorMixin,
@@ -3568,7 +3619,7 @@ class TestVisibleString(
         self.assertTrue(obj.ber_encoded)
         self.assertFalse(obj.lenindef)
         self.assertTrue(obj.bered)
-        obj = obj.copy()
+        obj = copy(obj)
         self.assertTrue(obj.ber_encoded)
         self.assertFalse(obj.lenindef)
         self.assertTrue(obj.bered)
@@ -3582,7 +3633,7 @@ class TestVisibleString(
         self.assertTrue(obj.ber_encoded)
         self.assertTrue(obj.lenindef)
         self.assertTrue(obj.bered)
-        obj = obj.copy()
+        obj = copy(obj)
         self.assertTrue(obj.ber_encoded)
         self.assertTrue(obj.lenindef)
         self.assertTrue(obj.bered)
@@ -3766,9 +3817,10 @@ class TimeMixin(object):
             max_datetime=self.max_datetime,
         ))
         obj = self.base_klass(*values)
-        obj_copied = obj.copy()
-        self.assert_copied_basic_fields(obj, obj_copied)
-        self.assertEqual(obj._value, obj_copied._value)
+        for copy_func in copy_funcs:
+            obj_copied = copy_func(obj)
+            self.assert_copied_basic_fields(obj, obj_copied)
+            self.assertEqual(obj._value, obj_copied._value)
 
     @given(data_strategy())
     def test_stripped(self, d):
@@ -4193,9 +4245,10 @@ class TestAny(CommonMixin, TestCase):
     def test_copy(self, values):
         for klass in (Any, AnyInherited):
             obj = klass(*values)
-            obj_copied = obj.copy()
-            self.assert_copied_basic_fields(obj, obj_copied)
-            self.assertEqual(obj._value, obj_copied._value)
+            for copy_func in copy_funcs:
+                obj_copied = copy_func(obj)
+                self.assert_copied_basic_fields(obj, obj_copied)
+                self.assertEqual(obj._value, obj_copied._value)
 
     @given(binary().map(OctetString))
     def test_stripped(self, value):
@@ -4337,7 +4390,7 @@ class TestAny(CommonMixin, TestCase):
         self.assertTrue(obj.lenindef)
         self.assertFalse(obj.ber_encoded)
         self.assertTrue(obj.bered)
-        obj = obj.copy()
+        obj = copy(obj)
         self.assertTrue(obj.lenindef)
         self.assertFalse(obj.ber_encoded)
         self.assertTrue(obj.bered)
@@ -4569,6 +4622,7 @@ class TestChoice(CommonMixin, TestCase):
 
         class Wahl(self.base_klass):
             schema = _schema
+        register_class(Wahl)
         obj = Wahl(
             value=value,
             expl=expl,
@@ -4576,15 +4630,17 @@ class TestChoice(CommonMixin, TestCase):
             optional=optional or False,
             _decoded=_decoded,
         )
-        obj_copied = obj.copy()
-        self.assertIsNone(obj.tag)
-        self.assertIsNone(obj_copied.tag)
-        # hack for assert_copied_basic_fields
-        obj.tag = "whatever"
-        obj_copied.tag = "whatever"
-        self.assert_copied_basic_fields(obj, obj_copied)
-        self.assertEqual(obj._value, obj_copied._value)
-        self.assertEqual(obj.specs, obj_copied.specs)
+        for copy_func in copy_funcs:
+            obj_copied = copy_func(obj)
+            self.assertIsNone(obj.tag)
+            self.assertIsNone(obj_copied.tag)
+            # hack for assert_copied_basic_fields
+            obj.tag = "whatever"
+            obj_copied.tag = "whatever"
+            self.assert_copied_basic_fields(obj, obj_copied)
+            obj.tag = None
+            self.assertEqual(obj._value, obj_copied._value)
+            self.assertEqual(obj.specs, obj_copied.specs)
 
     @given(booleans())
     def test_stripped(self, value):
@@ -5020,13 +5076,15 @@ class SeqMixing(object):
     def test_copy(self, d):
         class SeqInherited(self.base_klass):
             pass
+        register_class(SeqInherited)
         for klass in (self.base_klass, SeqInherited):
             values = d.draw(seq_values_strategy(seq_klass=klass))
             obj = klass(*values)
-            obj_copied = obj.copy()
-            self.assert_copied_basic_fields(obj, obj_copied)
-            self.assertEqual(obj.specs, obj_copied.specs)
-            self.assertEqual(obj._value, obj_copied._value)
+            for copy_func in copy_funcs:
+                obj_copied = copy_func(obj)
+                self.assert_copied_basic_fields(obj, obj_copied)
+                self.assertEqual(obj.specs, obj_copied.specs)
+                self.assertEqual(obj._value, obj_copied._value)
 
     @given(data_strategy())
     def test_stripped(self, d):
@@ -5155,7 +5213,7 @@ class SeqMixing(object):
         self.assertDictEqual(ctx_copied, ctx_dummy)
         self.assertTrue(seq_decoded_lenindef.lenindef)
         self.assertTrue(seq_decoded_lenindef.bered)
-        seq_decoded_lenindef = seq_decoded_lenindef.copy()
+        seq_decoded_lenindef = copy(seq_decoded_lenindef)
         self.assertTrue(seq_decoded_lenindef.lenindef)
         self.assertTrue(seq_decoded_lenindef.bered)
         with self.assertRaises(DecodeError):
@@ -5281,7 +5339,7 @@ class SeqMixing(object):
             seq_decoded, _ = seq_with_default.decode(seq_encoded, ctx=ctx)
             self.assertTrue(seq_decoded.ber_encoded)
             self.assertTrue(seq_decoded.bered)
-            seq_decoded = seq_decoded.copy()
+            seq_decoded = copy(seq_decoded)
             self.assertTrue(seq_decoded.ber_encoded)
             self.assertTrue(seq_decoded.bered)
             for name, value in _schema:
@@ -5321,7 +5379,7 @@ class SeqMixing(object):
         self.assertFalse(decoded.ber_encoded)
         self.assertFalse(decoded.lenindef)
         self.assertTrue(decoded.bered)
-        decoded = decoded.copy()
+        decoded = copy(decoded)
         self.assertFalse(decoded.ber_encoded)
         self.assertFalse(decoded.lenindef)
         self.assertTrue(decoded.bered)
@@ -5341,7 +5399,7 @@ class SeqMixing(object):
         self.assertFalse(decoded.ber_encoded)
         self.assertFalse(decoded.lenindef)
         self.assertTrue(decoded.bered)
-        decoded = decoded.copy()
+        decoded = copy(decoded)
         self.assertFalse(decoded.ber_encoded)
         self.assertFalse(decoded.lenindef)
         self.assertTrue(decoded.bered)
@@ -5441,7 +5499,7 @@ class TestSet(SeqMixing, CommonMixin, TestCase):
             seq_decoded, _ = Seq().decode(seq_encoded, ctx=ctx)
             self.assertTrue(seq_decoded.ber_encoded)
             self.assertTrue(seq_decoded.bered)
-            seq_decoded = seq_decoded.copy()
+            seq_decoded = copy(seq_decoded)
             self.assertTrue(seq_decoded.ber_encoded)
             self.assertTrue(seq_decoded.bered)
             self.assertSequenceEqual(
@@ -5719,6 +5777,7 @@ class SeqOfMixing(object):
 
         class SeqOf(self.base_klass):
             schema = _schema
+        register_class(SeqOf)
         obj = SeqOf(
             value=value,
             bounds=bounds,
@@ -5728,11 +5787,12 @@ class SeqOfMixing(object):
             optional=optional or False,
             _decoded=_decoded,
         )
-        obj_copied = obj.copy()
-        self.assert_copied_basic_fields(obj, obj_copied)
-        self.assertEqual(obj._bound_min, obj_copied._bound_min)
-        self.assertEqual(obj._bound_max, obj_copied._bound_max)
-        self.assertEqual(obj._value, obj_copied._value)
+        for copy_func in copy_funcs:
+            obj_copied = copy_func(obj)
+            self.assert_copied_basic_fields(obj, obj_copied)
+            self.assertEqual(obj._bound_min, obj_copied._bound_min)
+            self.assertEqual(obj._bound_max, obj_copied._bound_max)
+            self.assertEqual(obj._value, obj_copied._value)
 
     @given(
         lists(binary()),
@@ -5869,7 +5929,7 @@ class SeqOfMixing(object):
         )
         self.assertTrue(obj_decoded_lenindef.lenindef)
         self.assertTrue(obj_decoded_lenindef.bered)
-        obj_decoded_lenindef = obj_decoded_lenindef.copy()
+        obj_decoded_lenindef = copy(obj_decoded_lenindef)
         self.assertTrue(obj_decoded_lenindef.lenindef)
         self.assertTrue(obj_decoded_lenindef.bered)
         repr(obj_decoded_lenindef)
@@ -5900,7 +5960,7 @@ class SeqOfMixing(object):
         self.assertFalse(decoded.ber_encoded)
         self.assertFalse(decoded.lenindef)
         self.assertTrue(decoded.bered)
-        decoded = decoded.copy()
+        decoded = copy(decoded)
         self.assertFalse(decoded.ber_encoded)
         self.assertFalse(decoded.lenindef)
         self.assertTrue(decoded.bered)
@@ -5921,7 +5981,7 @@ class SeqOfMixing(object):
         self.assertFalse(decoded.ber_encoded)
         self.assertFalse(decoded.lenindef)
         self.assertTrue(decoded.bered)
-        decoded = decoded.copy()
+        decoded = copy(decoded)
         self.assertFalse(decoded.ber_encoded)
         self.assertFalse(decoded.lenindef)
         self.assertTrue(decoded.bered)
@@ -5990,7 +6050,7 @@ class TestSetOf(SeqOfMixing, CommonMixin, TestCase):
             seq_decoded, _ = Seq().decode(seq_encoded, ctx=ctx)
             self.assertTrue(seq_decoded.ber_encoded)
             self.assertTrue(seq_decoded.bered)
-            seq_decoded = seq_decoded.copy()
+            seq_decoded = copy(seq_decoded)
             self.assertTrue(seq_decoded.ber_encoded)
             self.assertTrue(seq_decoded.bered)
             self.assertSequenceEqual(
@@ -6501,13 +6561,13 @@ class TestStrictDefaultExistence(TestCase):
             decoded, _ = seq.decode(raw, ctx={"allow_default_values": True})
             self.assertTrue(decoded.ber_encoded)
             self.assertTrue(decoded.bered)
-            decoded = decoded.copy()
+            decoded = copy(decoded)
             self.assertTrue(decoded.ber_encoded)
             self.assertTrue(decoded.bered)
             decoded, _ = seq.decode(raw, ctx={"bered": True})
             self.assertTrue(decoded.ber_encoded)
             self.assertTrue(decoded.bered)
-            decoded = decoded.copy()
+            decoded = copy(decoded)
             self.assertTrue(decoded.ber_encoded)
             self.assertTrue(decoded.bered)
 
@@ -6559,3 +6619,15 @@ class TestExplOOB(TestCase):
         with assertRaisesRegex(self, DecodeError, "explicit tag out-of-bound"):
             Integer(expl=expl).decode(raw)
         Integer(expl=expl).decode(raw, ctx={"allow_expl_oob": True})
+
+
+class TestPickleDifferentVersion(TestCase):
+    def runTest(self):
+        pickled = pickle_dumps(Integer(123), pickle_proto)
+        import pyderasn
+        version_orig = pyderasn.__version__
+        pyderasn.__version__ += "different"
+        with assertRaisesRegex(self, ValueError, "different PyDERASN version"):
+            pickle_loads(pickled)
+        pyderasn.__version__ = version_orig
+        pickle_loads(pickled)