According to what I said on getmoto#1026 Add a unittest and attempt a…

… fix.

moto/core/models.py

@@ -130,7 +130,8 @@ def reset(self):
         responses.reset()
 
     def enable_patching(self):
-        responses.start()
+        if BaseMockAWS.nested_count == 1:
+            responses.start()
         for method in RESPONSES_METHODS:
             for backend in self.backends_for_urls.values():
                 for key, value in backend.urls.items():

tests/test_core/test_nested.py

@@ -4,8 +4,10 @@
 from boto.sqs.connection import SQSConnection
 from boto.sqs.message import Message
 from boto.ec2 import EC2Connection
+import requests
 
-from moto import mock_sqs_deprecated, mock_ec2_deprecated
+from moto import mock_sqs_deprecated, mock_ec2_deprecated, mock_sqs, mock_sns
+from moto.packages import httpretty
 
 
 class TestNestedDecorators(unittest.TestCase):
@@ -24,6 +26,17 @@ def setup_sqs_queue(self):
     @mock_ec2_deprecated
     def test_nested(self):
         self.setup_sqs_queue()
-
         conn = EC2Connection()
         conn.run_instances('ami-123456')
+
+    @mock_sqs
+    @mock_sns
+    def test_multiple_mocks_part1(self):
+        pass
+
+    @httpretty.activate
+    def test_multiple_mocks_part2(self):
+        httpretty.register_uri(httpretty.GET, 'http://www.google.com')
+        response = requests.get('http://www.google.com')
+        assert(response.status_code == 200)
+        assert(response.text == 'HTTPretty :)')