1 files changed, 10 insertions, 0 deletions
diff --git a/tests/test_map.py b/tests/test_map.py
index 13c6cb1..bbf0a52 100644
--- a/tests/test_map.py
+++ b/tests/test_map.py
@@ -1,5 +1,6 @@
 import collections.abc
 import gc
+import pickle
 import random
 import unittest
 import weakref
@@ -1148,6 +1149,15 @@ class BaseMapTest:
             self.assertEqual(dict(h.items()), d)
             self.assertEqual(len(h), len(d))
 
+    def test_map_pickle(self):
+        h = self.Map(a=1, b=2)
+        for proto in range(pickle.HIGHEST_PROTOCOL):
+            p = pickle.dumps(h, proto)
+            uh = pickle.loads(p)
+
+            self.assertTrue(isinstance(uh, self.Map))
+            self.assertEqual(h, uh)
+
 
 class PyMapTest(BaseMapTest, unittest.TestCase):