MeasurementLink Python tests raise DeprecationWarning with Python 3.12

[bkeryan]

Bug Report

The MeasurementLink Python tests raise DeprecationWarning with Python 3.12. Most of these are due to dependencies but the pathlib one is not.

Repro or Code Sample

Install Python 3.12 and run tests.

Expected Behavior

No warnings.

Current Behavior

================================================== warnings summary ===================================================
<frozen importlib._bootstrap>:488
  <frozen importlib._bootstrap>:488: DeprecationWarning: Type google._upb._message.MessageMapContainer uses PyType_Spec with a metaclass that has custom tp_new. This is deprecated and will no longer be allowed in Python 3.14.

<frozen importlib._bootstrap>:488
  <frozen importlib._bootstrap>:488: DeprecationWarning: Type google._upb._message.ScalarMapContainer uses PyType_Spec with a metaclass that has custom tp_new. This is deprecated and will no longer be allowed in Python 3.14.

.venv\Lib\site-packages\google\protobuf\internal\well_known_types.py:93
  D:\dev\measurementlink-python\.venv\Lib\site-packages\google\protobuf\internal\well_known_types.py:93: DeprecationWarning: datetime.datetime.utcfromtimestamp() is deprecated and scheduled for removal in a future version. Use timezone-aware objects to represent datetimes in UTC: datetime.datetime.fromtimestamp(timestamp, datetime.UTC).
    _EPOCH_DATETIME_NAIVE = datetime.datetime.utcfromtimestamp(0)

tests/acceptance/test_logging.py: 8 warnings
tests/acceptance/test_measurement_service.py: 9 warnings
tests/acceptance/test_session_management.py: 151 warnings
tests/acceptance/test_streaming_data_measurement.py: 2 warnings
tests/acceptance/test_yield_vs_return.py: 2 warnings
tests/integration/test_service_manager.py: 5 warnings
  D:\dev\measurementlink-python\.venv\Lib\site-packages\grpc\_channel.py:1125: DeprecationWarning: datetime.datetime.utcnow() is deprecated and scheduled for removal in a future version. Use timezone-aware objects to represent datetimes in UTC: datetime.datetime.now(datetime.UTC).
    state.rpc_start_time = datetime.utcnow()

tests/acceptance/test_session_management.py: 188 warnings
tests/acceptance/test_streaming_data_measurement.py: 14 warnings
tests/acceptance/test_yield_vs_return.py: 3 warnings
tests/integration/test_service_manager.py: 5 warnings
  D:\dev\measurementlink-python\.venv\Lib\site-packages\grpc\_channel.py:226: DeprecationWarning: datetime.datetime.utcnow() is deprecated and scheduled for removal in a future version. Use timezone-aware objects to represent datetimes in UTC: datetime.datetime.now(datetime.UTC).
    state.rpc_end_time = datetime.utcnow()
tests/acceptance/test_measurement_service.py: 5 warnings
tests/acceptance/test_session_management.py: 37 warnings
tests/acceptance/test_streaming_data_measurement.py: 12 warnings
tests/acceptance/test_yield_vs_return.py: 1 warning
  D:\dev\measurementlink-python\.venv\Lib\site-packages\grpc\_channel.py:1356: DeprecationWarning: datetime.datetime.utcnow() is deprecated and scheduled for removal in a future version. Use timezone-aware objects to represent datetimes in UTC: datetime.datetime.now(datetime.UTC).
    state.rpc_start_time = datetime.utcnow()

tests/unit/test_discovery_client.py::test___key_file_exist_after_poll___start_discovery_service___discovery_service_started
  D:\dev\measurementlink-python\ni_measurementlink_service\_internal\discovery_client.py:328: DeprecationWarning: pathlib.Path.__enter__() is deprecated and scheduled for removal in Python 3.13; Path objects as a context manager is a no-op
    with _open_key_file(str(key_file_path)) as _:

-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html
========================================= 303 passed, 470 warnings in 55.18s ==========================================

Your Environment

• OS & Device: Windows
• ni-measurementlink-service version: 1.3 main
• MeasurementLink version: N/A
• Python version: 3.12.0

AB#2540750

[bkeryan]

tests/unit/test_discovery_client.py::test___key_file_exist_after_poll___start_discovery_service___discovery_service_started
  D:\dev\measurementlink-python\ni_measurementlink_service\_internal\discovery_client.py:328: DeprecationWarning: pathlib.Path.__enter__() is deprecated and scheduled for removal in Python 3.13; Path objects as a context manager is a no-op
    with _open_key_file(str(key_file_path)) as _:

I'm not sure why this warns about pathlib. This code uses os.fdopen, so it should be calling __enter__ on a TextIO or similar file object.

[jayaseelan-james]

tests/unit/test_discovery_client.py::test___key_file_exist_after_poll___start_discovery_service___discovery_service_started
  D:\dev\measurementlink-python\ni_measurementlink_service\_internal\discovery_client.py:328: DeprecationWarning: pathlib.Path.__enter__() is deprecated and scheduled for removal in Python 3.13; Path objects as a context manager is a no-op
    with _open_key_file(str(key_file_path)) as _:

I'm not sure why this warns about pathlib. This code uses os.fdopen, so it should be calling __enter__ on a TextIO or similar file object.

That's right, #514 fixes this issue.

[jayaseelan-james]

Attaching the issues of the other DeprecationWarnings reported by their respective dependencies below for the purpose of completion:

• DeprecationWarning: datetime.datetime.utcnow() is deprecated and scheduled for removal in a future version. Use timezone-aware objects to represent datetimes in UTC: datetime.datetime.now(datetime.UTC).
• Type google._upb._message.MessageMapContainer uses PyType_Spec with a metaclass that has custom tp_new. This is deprecated and will no longer be allowed in Python 3.14.
• DeprecationWarning: Type google._upb._message.ScalarMapContainer uses PyType_Spec with a metaclass that has custom tp_new. This is deprecated and will no longer be allowed in Python 3.14.