new_contents: import pytest
  
  from collections import OrderedDict
  from plenum.common.messages.fields import LedgerIdField
  from plenum.common.types import ReqLedgerStatus
  
  EXPECTED_ORDERED_FIELDS = OrderedDict([
      ("ledgerId", LedgerIdField),
  ])
  
  
  def test_hash_expected_type():
      assert ReqLedgerStatus.typename == "REQ_LEDGER_STATUS"
  
  
  def test_has_expected_fields():
      actual_field_names = OrderedDict(ReqLedgerStatus.schema).keys()
      assert actual_field_names == EXPECTED_ORDERED_FIELDS.keys()
  
  
  def test_has_expected_validators():
      schema = dict(ReqLedgerStatus.schema)
      for field, validator in EXPECTED_ORDERED_FIELDS.items():
          assert isinstance(schema[field], validator)
  
subject: add test for ReqLedgerStatus message validation