Use built-in unittest.mock instead of external mock

Python 3 has a builtin unittest.mock module that is equivalent
to the external mock (in fact, the latter has become a backport
of the former), so just use it instead of introducing unnecessary
dependency.

Closes: #186
Pull-request: https://github.com/sqlalchemy/dogpile.cache/pull/186
Pull-request-sha: 5beb8326183807598f568284e428928eed9b34e3

Change-Id: I86e8640b73c4b44c563efa8a80c7b005280aa020

4 files changed, 5 insertions, 7 deletions

diff --git a/tests/cache/plugins/test_mako_cache.py b/tests/cache/plugins/test_mako_cache.py
index 7bd5080..1837ff3 100644
--- a/tests/cache/plugins/test_mako_cache.py
+++ b/tests/cache/plugins/test_mako_cache.py
@@ -1,8 +1,8 @@
+from unittest import mock
 from unittest import TestCase
 
 from mako.cache import register_plugin
 from mako.template import Template
-import mock
 import pytest
 
 from .. import eq_
diff --git a/tests/cache/test_redis_backend.py b/tests/cache/test_redis_backend.py
index 1070b2a..94780c1 100644
--- a/tests/cache/test_redis_backend.py
+++ b/tests/cache/test_redis_backend.py
@@ -3,9 +3,9 @@ import os
 from threading import Event
 import time
 from unittest import TestCase
+from unittest.mock import Mock
+from unittest.mock import patch
 
-from mock import Mock
-from mock import patch
 import pytest
 
 from dogpile.cache.region import _backend_loader
diff --git a/tests/cache/test_region.py b/tests/cache/test_region.py
index 4272598..d778b52 100644
--- a/tests/cache/test_region.py
+++ b/tests/cache/test_region.py
@@ -4,10 +4,9 @@ import datetime
 import io
 import itertools
 import time
+from unittest import mock
 from unittest import TestCase
 
-import mock
-
 from dogpile.cache import CacheRegion
 from dogpile.cache import exception
 from dogpile.cache import make_region
diff --git a/tests/test_lock.py b/tests/test_lock.py
index dd7f058..4cec3cf 100644
--- a/tests/test_lock.py
+++ b/tests/test_lock.py
@@ -3,10 +3,9 @@ import logging
 import math
 import threading
 import time
+from unittest import mock
 from unittest import TestCase
 
-import mock
-
 from dogpile import Lock
 from dogpile import NeedRegenerationException
 from dogpile.util import ReadWriteMutex