Use unittest.mock instead of mock.

pyproject.toml

@@ -38,7 +38,6 @@ pcsc = ["pyscard"]
 
 [tool.poetry.dev-dependencies]
 pytest = "^6.0"
-mock = "^4.0.3"
 
 [build-system]
 requires = ["poetry-core>=1.0.0"]

tests/test_client.py

@@ -27,9 +27,9 @@
 # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 # POSSIBILITY OF SUCH DAMAGE.
 
-import mock
 import unittest
 import json
+from unittest import mock
 from threading import Event, Timer
 from fido2 import cbor
 from fido2.utils import sha256, websafe_decode

tests/test_ctap1.py

@@ -25,9 +25,9 @@
 # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 # POSSIBILITY OF SUCH DAMAGE.
 
-from fido2.ctap1 import Ctap1, ApduError
 import unittest
-import mock
+from unittest import mock
+from fido2.ctap1 import Ctap1, ApduError
 
 
 class TestCtap1(unittest.TestCase):

tests/test_ctap2.py

@@ -25,6 +25,8 @@
 # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 # POSSIBILITY OF SUCH DAMAGE.
 
+import unittest
+from unittest import mock
 from fido2.ctap1 import RegistrationData
 from fido2.ctap2 import (
     Ctap2,
@@ -40,8 +42,6 @@ from fido2 import cbor
 from cryptography.hazmat.backends import default_backend
 from cryptography.hazmat.primitives.asymmetric import ec
 
-import unittest
-import mock
 
 _AAGUID = bytes.fromhex("F8A011F38C0A4D15800617111F9EDC7D")
 _INFO = bytes.fromhex(

tests/test_pcsc.py

@@ -26,8 +26,8 @@
 # POSSIBILITY OF SUCH DAMAGE.
 
 import unittest
-import mock
 import sys
+from unittest import mock
 from fido2.hid import CTAPHID
 
 sys.modules["smartcard"] = mock.Mock()