Use stdlib unittest mock.

requirements/dev.in

@@ -1,4 +1,3 @@
-mock
 pytest
 pytest-cov
 pip-tools

requirements/dev.txt

@@ -10,7 +10,6 @@ click==7.1.2              # via pip-tools
 colorama==0.4.4           # via pytest
 coverage==5.3             # via pytest-cov
 iniconfig==1.1.1          # via pytest
-mock==4.0.3               # via -r requirements/dev.in
 packaging==20.8           # via pytest
 pip-tools==5.4.0          # via -r requirements/dev.in
 pluggy==0.13.1            # via pytest

src/wheezy/core/tests/test_benchmark.py

@@ -2,15 +2,14 @@
 """
 
 import unittest
+from unittest.mock import Mock, PropertyMock
 
-from mock import Mock
+from wheezy.core.benchmark import Benchmark, Timer
 
 
 class BenchmarkTestCase(unittest.TestCase):
     def test_run(self):
         """Ensure targets are called."""
-        from wheezy.core.benchmark import Benchmark
-
         t1 = Mock()
         t1.__name__ = "t1"
         t2 = Mock()
@@ -29,10 +28,6 @@ def test_run(self):
 
     def test_run_timer(self):
         """Ensure timer is used."""
-        from mock import PropertyMock
-
-        from wheezy.core.benchmark import Benchmark
-
         t1 = Mock()
         t1.__name__ = "t1"
         mock_timer = Mock()
@@ -51,8 +46,6 @@ def test_run_timer(self):
 
     def test_zero_division_error(self):
         """ZeroDivisionError is not raised when timing is 0."""
-        from wheezy.core.benchmark import Benchmark
-
         t1 = Mock()
         t1.__name__ = "t1"
         mock_timer = Mock()
@@ -62,8 +55,6 @@ def test_zero_division_error(self):
 
     def test_report(self):
         """Ensure report is printed."""
-        from wheezy.core.benchmark import Benchmark
-
         t1 = Mock()
         t1.__name__ = "t1"
         mock_timer = Mock()
@@ -75,8 +66,6 @@ def test_report(self):
 class TimerTestCase(unittest.TestCase):
     def test_start_stop(self):
         """Ensure a call is intercepted."""
-        from wheezy.core.benchmark import Timer
-
         mock_target = Mock()
         mock_name = Mock()
         mock_target.name = mock_name

src/wheezy/core/tests/test_db.py

@@ -2,14 +2,20 @@
 """
 
 import unittest
+import warnings
+from unittest.mock import Mock
 
-from mock import Mock
+from wheezy.core.db import (  # isort:skip
+    NullSession,
+    NullTPCSession,
+    SESSION_STATUS_ACTIVE,
+    Session,
+    TPCSession,
+)
 
 
 class SessionTestCase(unittest.TestCase):
     def setUp(self):
-        from wheezy.core.db import Session
-
         self.mock_pool = Mock()
         self.session = Session(self.mock_pool)
 
@@ -32,7 +38,6 @@ def test_connection(self):
 
     def test_on_active(self):
         """Ensure on_active is called once."""
-        from wheezy.core.db import Session
 
         class MockSession(Session):
             pass
@@ -121,8 +126,6 @@ def test_exit_connection_error(self):
 
 class TPCSessionTestCase(unittest.TestCase):
     def setUp(self):
-        from wheezy.core.db import TPCSession
-
         self.mock_pool = Mock()
         self.session = TPCSession(self.mock_pool)
 
@@ -170,8 +173,6 @@ def test_commit_no_enlisted(self):
 
     def test_commit_prepare_error(self):
         """An error is raised while working with connection."""
-        from wheezy.core.db import SESSION_STATUS_ACTIVE
-
         self.session.__enter__()
         session = Mock()
         session.__enter__ = Mock()
@@ -186,8 +187,6 @@ def test_commit_prepare_error(self):
 
     def test_commit_error(self):
         """An error is raised while working with connection."""
-        from wheezy.core.db import SESSION_STATUS_ACTIVE
-
         self.session.__enter__()
         session = Mock()
         session.__enter__ = Mock()
@@ -202,8 +201,6 @@ def test_commit_error(self):
 
     def test_commit(self):
         """Enlisted sessions are exited."""
-        from wheezy.core.db import SESSION_STATUS_ACTIVE
-
         self.session.__enter__()
         session = Mock()
         session.__enter__ = Mock()
@@ -234,8 +231,6 @@ def test_exit_no_active(self):
 
     def test_exit_active(self):
         """There are active sessions enlisted."""
-        from wheezy.core.db import SESSION_STATUS_ACTIVE
-
         self.session.__enter__()
         session = Mock()
         session.__enter__ = Mock()
@@ -250,10 +245,6 @@ def test_exit_active_on_error(self):
         """There are active sessions enlisted and error is raised
         while working with connection.
         """
-        import warnings
-
-        from wheezy.core.db import SESSION_STATUS_ACTIVE
-
         self.session.__enter__()
         session = Mock()
         session.__enter__ = Mock()
@@ -270,8 +261,6 @@ def test_exit_active_on_error(self):
 
 class NullSessionTestCase(unittest.TestCase):
     def setUp(self):
-        from wheezy.core.db import NullSession
-
         self.session = NullSession()
 
     def test_enter(self):
@@ -314,8 +303,6 @@ def test_exit(self):
 
 class NullTPCSessionTestCase(unittest.TestCase):
     def setUp(self):
-        from wheezy.core.db import NullTPCSession
-
         self.session = NullTPCSession()
 
     def test_enter(self):

src/wheezy/core/tests/test_gzip.py

@@ -3,11 +3,11 @@
 
 import unittest
 
+from wheezy.core.gzip import compress, decompress
+
 
 class GzipTestCase(unittest.TestCase):
     def test_compress_decompress(self):
         """Ensure decompress is a reverse function of compress."""
-        from wheezy.core.gzip import compress, decompress
-
         c = compress("test".encode("utf-8"))
         assert "test" == decompress(c).decode("utf-8")

src/wheezy/core/tests/test_httpclient.py

@@ -2,14 +2,14 @@
 """
 
 import unittest
+from unittest.mock import Mock, patch
 
-from mock import Mock, patch
+from wheezy.core import __version__, httpclient
+from wheezy.core.gzip import compress
 
 
 class HTTPClientTestCase(unittest.TestCase):
     def setUp(self):
-        from wheezy.core import __version__, httpclient
-
         self.patcher = patch.object(httpclient, "HTTPConnection")
         self.mock_c_class = self.patcher.start()
         self.headers = [("date", "Sat, 12 Oct 2013 18:29:13 GMT")]
@@ -117,8 +117,6 @@ def test_assert_json(self):
 
     def test_json(self):
         """json response."""
-        from wheezy.core import httpclient
-
         patcher = patch.object(httpclient, "json_loads")
         mock_json_loads = patcher.start()
         mock_json_loads.return_value = {}
@@ -132,8 +130,6 @@ def test_json(self):
 
     def test_gzip(self):
         """Ensure gzip decompression."""
-        from wheezy.core.gzip import compress
-
         self.headers.append(("content-encoding", "gzip"))
         self.mock_response.read.return_value = compress("test".encode("utf-8"))
         self.client.get("auth/token")

src/wheezy/core/tests/test_introspection.py

@@ -3,6 +3,9 @@
 
 import unittest
 
+from wheezy.core.descriptors import attribute
+from wheezy.core.introspection import looks
+
 
 class LooksLike(object):
     def assert_warning(self, msg):
@@ -12,7 +15,6 @@ def assert_warning(self, msg):
 
     def test_func(self):
         """Tests if there is any function missing."""
-        from wheezy.core.introspection import looks
 
         class IFoo(object):
             def foo(self):
@@ -27,7 +29,6 @@ def bar(self):
 
     def test_ignore_func(self):
         """Tests if function is ignored."""
-        from wheezy.core.introspection import looks
 
         class IFoo(object):
             def foo(self):
@@ -41,7 +42,6 @@ def bar(self):
 
     def test_redundant_ignore(self):
         """Tests function is set to be ignored but it is not found."""
-        from wheezy.core.introspection import looks
 
         class IFoo(object):
             def bar(self):
@@ -56,7 +56,6 @@ def bar(self):
 
     def test_args(self):
         """Tests if there any function args corresponds."""
-        from wheezy.core.introspection import looks
 
         class IFoo(object):
             def foo(self, a, b=1):
@@ -73,7 +72,6 @@ def foo(self, a, b):
 
     def test_ignore_args(self):
         """Tests if function args ignored."""
-        from wheezy.core.introspection import looks
 
         class IFoo(object):
             def foo(self, a, b=1):
@@ -87,7 +85,6 @@ def foo(self, a, b):
 
     def test_property(self):
         """Tests if there any @property corresponds."""
-        from wheezy.core.introspection import looks
 
         class IFoo(object):
             @property
@@ -103,7 +100,6 @@ def foo(self):
 
     def test_inheritance(self):
         """Test inheritance use case."""
-        from wheezy.core.introspection import looks
 
         class IFoo(object):
             def foo(self):
@@ -125,7 +121,6 @@ def bar(self):
 
     def test_special_method(self):
         """Test if __?__ are checked"""
-        from wheezy.core.introspection import looks
 
         class IFoo(object):
             def __len__(self):
@@ -147,7 +142,6 @@ def __len__(self):
 
     def test_decorator(self):
         """Decorator argspec doesn't match."""
-        from wheezy.core.introspection import looks
 
         def bar():
             def decorate(m):
@@ -174,8 +168,6 @@ def foo(self, a):
 
     def test_type(self):
         """Test if decorator types do not match."""
-        from wheezy.core.descriptors import attribute
-        from wheezy.core.introspection import looks
 
         class IFoo(object):
             @attribute
@@ -192,7 +184,6 @@ def foo(self):
 
     def test_various(self):
         """Tests if there are no errors."""
-        from wheezy.core.introspection import looks
 
         class IFoo(object):
             def foo(self, a, b=1):