test: Fix using unittest.mock whenever available

test-requirements.txt

@@ -1,5 +1,5 @@
 pip  # always use newest pip
-mock # for testing under python < 3.3
+mock ; python_version<'3.3'
 pytest<7
 pytest-cov==2.8.1
 pytest-forked<=1.4.0

tests/integrations/cloud_resource_context/test_cloud_resource_context.py

@@ -1,8 +1,13 @@
 import json
 
 import pytest
-import mock
-from mock import MagicMock
+
+try:
+    from unittest import mock  # python 3.3 and above
+    from unittest.mock import MagicMock
+except ImportError:
+    import mock  # python < 3.3
+    from mock import MagicMock
 
 from sentry_sdk.integrations.cloud_resource_context import (
     CLOUD_PLATFORM,

tests/integrations/opentelemetry/test_propagator.py

@@ -1,5 +1,9 @@
-from mock import MagicMock
-import mock
+try:
+    from unittest import mock  # python 3.3 and above
+    from unittest.mock import MagicMock
+except ImportError:
+    import mock  # python < 3.3
+    from mock import MagicMock
 
 from opentelemetry.context import get_current
 from opentelemetry.trace.propagation import get_current_span

tests/integrations/opentelemetry/test_span_processor.py

@@ -1,7 +1,13 @@
 from datetime import datetime
-from mock import MagicMock
-import mock
 import time
+
+try:
+    from unittest import mock  # python 3.3 and above
+    from unittest.mock import MagicMock
+except ImportError:
+    import mock
+    from mock import MagicMock  # python < 3.3
+
 from sentry_sdk.integrations.opentelemetry.span_processor import (
     SentrySpanProcessor,
     link_trace_context_to_error_event,

tests/tracing/test_misc.py

@@ -1,4 +1,3 @@
-from mock import MagicMock
 import pytest
 import gc
 import uuid
@@ -12,8 +11,10 @@
 
 try:
     from unittest import mock  # python 3.3 and above
+    from unittest.mock import MagicMock
 except ImportError:
     import mock  # python < 3.3
+    from mock import MagicMock
 
 
 def test_span_trimming(sentry_init, capture_events):