diff --git a/tests/test_autoscaling/test_elbv2.py b/tests/test_autoscaling/test_elbv2.py
index 89ec4a39..9aff981f 100644
--- a/tests/test_autoscaling/test_elbv2.py
+++ b/tests/test_autoscaling/test_elbv2.py
@@ -1,6 +1,7 @@
 from __future__ import unicode_literals
 import boto3
 
+import sure  # noqa
 from moto import mock_autoscaling, mock_ec2,  mock_elbv2
 
 @mock_elbv2
diff --git a/tests/test_cloudformation/test_cloudformation_stack_crud_boto3.py b/tests/test_cloudformation/test_cloudformation_stack_crud_boto3.py
index 1f3bfdec..4e85453b 100644
--- a/tests/test_cloudformation/test_cloudformation_stack_crud_boto3.py
+++ b/tests/test_cloudformation/test_cloudformation_stack_crud_boto3.py
@@ -4,6 +4,7 @@ import json
 
 import boto3
 from botocore.exceptions import ClientError
+import sure  # noqa
 # Ensure 'assert_raises' context manager support for Python 2.6
 from nose.tools import assert_raises
 
diff --git a/tests/test_swf/models/test_activity_task.py b/tests/test_swf/models/test_activity_task.py
index 5dddab97..41c88caf 100644
--- a/tests/test_swf/models/test_activity_task.py
+++ b/tests/test_swf/models/test_activity_task.py
@@ -1,4 +1,5 @@
 from freezegun import freeze_time
+import sure  # noqa
 
 from moto.swf.exceptions import SWFWorkflowExecutionClosedError
 from moto.swf.models import (
diff --git a/tests/test_swf/models/test_domain.py b/tests/test_swf/models/test_domain.py
index 57f66c83..1a8a1268 100644
--- a/tests/test_swf/models/test_domain.py
+++ b/tests/test_swf/models/test_domain.py
@@ -1,4 +1,5 @@
 from collections import namedtuple
+import sure  # noqa
 
 from moto.swf.exceptions import SWFUnknownResourceFault
 from moto.swf.models import Domain
diff --git a/tests/test_swf/models/test_generic_type.py b/tests/test_swf/models/test_generic_type.py
index d7410f39..294df9f8 100644
--- a/tests/test_swf/models/test_generic_type.py
+++ b/tests/test_swf/models/test_generic_type.py
@@ -1,4 +1,5 @@
 from moto.swf.models import GenericType
+import sure  # noqa
 
 
 # Tests for GenericType (ActivityType, WorkflowType)
diff --git a/tests/test_swf/models/test_history_event.py b/tests/test_swf/models/test_history_event.py
index 43592aa6..b869408c 100644
--- a/tests/test_swf/models/test_history_event.py
+++ b/tests/test_swf/models/test_history_event.py
@@ -1,4 +1,5 @@
 from freezegun import freeze_time
+import sure  # noqa
 
 from moto.swf.models import HistoryEvent
 
diff --git a/tests/test_swf/models/test_timeout.py b/tests/test_swf/models/test_timeout.py
index d685bca8..fb52652f 100644
--- a/tests/test_swf/models/test_timeout.py
+++ b/tests/test_swf/models/test_timeout.py
@@ -1,4 +1,5 @@
 from freezegun import freeze_time
+import sure  # noqa
 
 from moto.swf.models import Timeout
 
diff --git a/tests/test_swf/responses/test_activity_tasks.py b/tests/test_swf/responses/test_activity_tasks.py
index 3511d4e5..c0b8897b 100644
--- a/tests/test_swf/responses/test_activity_tasks.py
+++ b/tests/test_swf/responses/test_activity_tasks.py
@@ -1,5 +1,6 @@
 from boto.swf.exceptions import SWFResponseError
 from freezegun import freeze_time
+import sure  # noqa
 
 from moto import mock_swf_deprecated
 from moto.swf import swf_backend
diff --git a/tests/test_swf/responses/test_activity_types.py b/tests/test_swf/responses/test_activity_types.py
index b283d344..95d8a373 100644
--- a/tests/test_swf/responses/test_activity_types.py
+++ b/tests/test_swf/responses/test_activity_types.py
@@ -1,5 +1,6 @@
 import boto
 from boto.swf.exceptions import SWFResponseError
+import sure  # noqa
 
 from moto import mock_swf_deprecated
 
diff --git a/tests/test_swf/responses/test_decision_tasks.py b/tests/test_swf/responses/test_decision_tasks.py
index 466e1a2a..972b1053 100644
--- a/tests/test_swf/responses/test_decision_tasks.py
+++ b/tests/test_swf/responses/test_decision_tasks.py
@@ -1,5 +1,6 @@
 from boto.swf.exceptions import SWFResponseError
 from freezegun import freeze_time
+import sure  # noqa
 
 from moto import mock_swf_deprecated
 from moto.swf import swf_backend
diff --git a/tests/test_swf/responses/test_domains.py b/tests/test_swf/responses/test_domains.py
index 3fa12d66..8edc7643 100644
--- a/tests/test_swf/responses/test_domains.py
+++ b/tests/test_swf/responses/test_domains.py
@@ -1,5 +1,6 @@
 import boto
 from boto.swf.exceptions import SWFResponseError
+import sure  # noqa
 
 from moto import mock_swf_deprecated
 
diff --git a/tests/test_swf/responses/test_timeouts.py b/tests/test_swf/responses/test_timeouts.py
index 5bd0ead9..f49c597a 100644
--- a/tests/test_swf/responses/test_timeouts.py
+++ b/tests/test_swf/responses/test_timeouts.py
@@ -1,4 +1,5 @@
 from freezegun import freeze_time
+import sure  # noqa
 
 from moto import mock_swf_deprecated
 
diff --git a/tests/test_swf/test_exceptions.py b/tests/test_swf/test_exceptions.py
index a23a14e6..8617242b 100644
--- a/tests/test_swf/test_exceptions.py
+++ b/tests/test_swf/test_exceptions.py
@@ -1,4 +1,5 @@
 from __future__ import unicode_literals
+import sure  # noqa
 
 import json