code: def test_driver_marked_as_silently_converts_to_str_converts_silently_to_str(
      tmpdir, driver, field_type, monkeypatch
  ):
      """Test if a driver and field_type is marked in fiona.drvsupport.driver_converts_to_str to convert to str really
      silently converts to str
  
      If this test fails, it should be considered to replace the respective None value in
      fiona.drvsupport.driver_converts_to_str with a GDALVersion(major, minor) value.
      """
  
      monkeypatch.delitem(
          fiona.drvsupport._driver_converts_to_str[field_type], driver
      )
  
      schema = get_schema(driver, field_type)
      path = str(tmpdir.join(get_temp_filename(driver)))
      values_in, values_out = zip(
          *generate_testdata(field_type, driver)
      )
      records = get_records(driver, values_in)
  
      with fiona.open(path, "w", driver=driver, schema=schema) as c:
          c.writerecords(records)
  
      with fiona.open(path, "r") as c:
          assert get_schema_field(driver, c.schema) == "str"
  
imports: import fiona
  from fiona._env import get_gdal_version_num, calc_gdal_version_num
  import pytest
  from fiona.errors import DriverSupportError
  from fiona.rfc3339 import parse_time, parse_datetime
  from .conftest import get_temp_filename
  from fiona.env import GDALVersion
  from fiona.model import Feature
  import datetime
  from fiona.drvsupport import supported_drivers, driver_mode_mingdal, _driver_converts_field_type_silently_to_str, _driver_supports_field, _driver_converts_to_str, _driver_supports_timezones, _driver_supports_milliseconds, _driver_supports_mode
  import pytz
  from pytz import timezone
label_desc: Use image node_id 20 for calling a global function with example usage: test_driver_marked_as_silently_converts_to_str_converts_silently_to_str(tmpdir, driver, field_type, monkeypatch) without return types