Intermittently failing test

Bắt đầu với tests/test_autosave.py::test_context_manager_thread_safety và tái hiện lỗi Windows CI từ lần chạy được liên kết. So sánh hành vi liên quan đến Autosave với epicsdbbuilder issue #32 và PR #177; được xem là hoàn tất khi xác định được nguyên nhân xảy ra không liên tục, kiểm thử vượt qua ổn định trong CI và xác nhận rằng lỗi không còn xảy ra.

There seems to be an intermittent failing test, introduced in the Autosave feature. Here's the failure stack from the last failed run:

   _____________________ test_context_manager_thread_safety ______________________
  Traceback (most recent call last):
    ...
    ...
    File "C:\Users\runneradmin\AppData\Local\Temp\cibw-run-4d5mbdhg\cp39-win_amd64\venv-test\lib\site-packages\_pytest\python.py", line 159, in pytest_pyfunc_call
      result = testfunction(**testargs)
    File "D:\a\pythonSoftIOC\pythonSoftIOC\tests\test_autosave.py", line 443, in test_context_manager_thread_safety
      builder.aOut("PV-FROM-CM")
    File "C:\Users\runneradmin\AppData\Local\Temp\cibw-run-4d5mbdhg\cp39-win_amd64\venv-test\lib\site-packages\softioc\builder.py", line 59, in aOut
      return PythonDevice.ao(name, EGU = EGU, PREC = PREC, **fields)
    File "C:\Users\runneradmin\AppData\Local\Temp\cibw-run-4d5mbdhg\cp39-win_amd64\venv-test\lib\site-packages\softioc\pythonSoftIoc.py", line 117, in __call__
      return RecordWrapper(
    File "C:\Users\runneradmin\AppData\Local\Temp\cibw-run-4d5mbdhg\cp39-win_amd64\venv-test\lib\site-packages\softioc\pythonSoftIoc.py", line 36, in __init__
      record.address = '@' + record.name
    File "C:\Users\runneradmin\AppData\Local\Temp\cibw-run-4d5mbdhg\cp39-win_amd64\venv-test\lib\site-packages\epicsdbbuilder\recordbase.py", line 216, in __setattr__
      self.__ValidateField(fieldname, value)
    File "C:\Users\runneradmin\AppData\Local\Temp\cibw-run-4d5mbdhg\cp39-win_amd64\venv-test\lib\site-packages\epicsdbbuilder\recordbase.py", line 227, in __ValidateField
      self._validate.ValidFieldValue(fieldname, str(value))
    File "C:\Users\runneradmin\AppData\Local\Temp\cibw-run-4d5mbdhg\cp39-win_amd64\venv-test\lib\site-packages\epicsdbbuilder\dbd.py", line 91, in ValidFieldValue
      assert message is None, \
  AssertionError: Can't write "@PV-FROM-CM" to field OUT: fldDes not found

The issue appears to be coming from epicsdbbuilder, which is why I've raised this issue there.

I've attempted to investigate this issue in CI in PR #177 , but have been unable to recreate it so far.