Consistently use unittest.mock in tests

 - Some tests used unittest.mock from the standard library
 - Some tests used mock from PyPI
 - Some tests tried to import unittest.mock with a fallback to mock
   (the import never fails on Python 3.7+, older Pythons are not supported)

10 files changed, 10 insertions, 18 deletions

diff --git a/changelog.d/3638.misc.rst b/changelog.d/3638.misc.rst
new file mode 100644
index 00000000..54481ec0
--- /dev/null
+++ b/changelog.d/3638.misc.rst
@@ -0,0 +1 @@
+Drop a test dependency on the ``mock`` package, always use :external+python:py:mod:`unittest.mock` -- by :user:`hroncok`
diff --git a/pkg_resources/tests/test_markers.py b/pkg_resources/tests/test_markers.py
index 15a3b499..9306d5b3 100644
--- a/pkg_resources/tests/test_markers.py
+++ b/pkg_resources/tests/test_markers.py
@@ -1,4 +1,4 @@
-import mock
+from unittest import mock
 
 from pkg_resources import evaluate_marker
 
diff --git a/pkg_resources/tests/test_pkg_resources.py b/pkg_resources/tests/test_pkg_resources.py
index 6518820e..684c9777 100644
--- a/pkg_resources/tests/test_pkg_resources.py
+++ b/pkg_resources/tests/test_pkg_resources.py
@@ -9,10 +9,7 @@ import stat
 import distutils.dist
 import distutils.command.install_egg_info
 
-try:
-    from unittest import mock
-except ImportError:
-    import mock
+from unittest import mock
 
 from pkg_resources import (
     DistInfoDistribution, Distribution, EggInfoDistribution,
diff --git a/setup.cfg b/setup.cfg
index 201c2602..6921de86 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -59,7 +59,6 @@ testing =
 	pytest-perf
 
 	# local
-	mock
 	flake8-2020
 	virtualenv>=13.0.0
 	wheel
diff --git a/setuptools/tests/test_bdist_deprecations.py b/setuptools/tests/test_bdist_deprecations.py
index 1a900c67..1b69c418 100644
--- a/setuptools/tests/test_bdist_deprecations.py
+++ b/setuptools/tests/test_bdist_deprecations.py
@@ -1,7 +1,7 @@
 """develop tests
 """
-import mock
 import sys
+from unittest import mock
 
 import pytest
 
diff --git a/setuptools/tests/test_build_clib.py b/setuptools/tests/test_build_clib.py
index 48bea2b4..af9e7c6d 100644
--- a/setuptools/tests/test_build_clib.py
+++ b/setuptools/tests/test_build_clib.py
@@ -1,6 +1,7 @@
+from unittest import mock
+
 import pytest
 
-import mock
 from distutils.errors import DistutilsSetupError
 from setuptools.command.build_clib import build_clib
 from setuptools.dist import Distribution
diff --git a/setuptools/tests/test_easy_install.py b/setuptools/tests/test_easy_install.py
index d102e586..bca86066 100644
--- a/setuptools/tests/test_easy_install.py
+++ b/setuptools/tests/test_easy_install.py
@@ -12,7 +12,6 @@ import itertools
 import distutils.errors
 import io
 import zipfile
-import mock
 import time
 import re
 import subprocess
@@ -20,6 +19,7 @@ import pathlib
 import warnings
 from collections import namedtuple
 from pathlib import Path
+from unittest import mock
 
 import pytest
 from jaraco import path
diff --git a/setuptools/tests/test_packageindex.py b/setuptools/tests/test_packageindex.py
index 8e9435ef..73324aa2 100644
--- a/setuptools/tests/test_packageindex.py
+++ b/setuptools/tests/test_packageindex.py
@@ -5,8 +5,8 @@ import platform
 import urllib.request
 import urllib.error
 import http.client
+from unittest import mock
 
-import mock
 import pytest
 
 import setuptools.package_index
diff --git a/setuptools/tests/test_register.py b/setuptools/tests/test_register.py
index 98605806..ed85e9bb 100644
--- a/setuptools/tests/test_register.py
+++ b/setuptools/tests/test_register.py
@@ -2,10 +2,7 @@ from setuptools.command.register import register
 from setuptools.dist import Distribution
 from setuptools.errors import RemovedCommandError
 
-try:
-    from unittest import mock
-except ImportError:
-    import mock
+from unittest import mock
 
 import pytest
 
diff --git a/setuptools/tests/test_upload.py b/setuptools/tests/test_upload.py
index 7586cb26..4ed59bc2 100644
--- a/setuptools/tests/test_upload.py
+++ b/setuptools/tests/test_upload.py
@@ -2,10 +2,7 @@ from setuptools.command.upload import upload
 from setuptools.dist import Distribution
 from setuptools.errors import RemovedCommandError
 
-try:
-    from unittest import mock
-except ImportError:
-    import mock
+from unittest import mock
 
 import pytest