Make keys pickleable

tests/test_s3/test_s3.py

@@ -8,6 +8,7 @@ from functools import wraps
 from gzip import GzipFile
 from io import BytesIO
 import zlib
+import pickle
 
 import json
 import boto
@@ -65,6 +66,16 @@ class MyModel(object):
         s3.put_object(Bucket='mybucket', Key=self.name, Body=self.value)
 
 
+@mock_s3
+def test_keys_are_pickleable():
+    """Keys must be pickleable due to boto3 implementation details."""
+    key = s3model.FakeKey('name', b'data!')
+    pickled = pickle.dumps(key)
+    loaded = pickle.loads(pickled)
+
+    assert loaded.value == key.value
+
+
 @mock_s3
 def test_my_model_save():
     # Create Bucket so that test can run