text: from eth.chains.ropsten import ROPSTEN_GENESIS_HEADER
  
  from p2p import discovery
  
  from trinity.protocol.les.proto import LESProtocolV1, LESProtocolV2
  
  
  def test_get_v5_topic():
      les_topic = discovery.get_v5_topic(LESProtocolV1, ROPSTEN_GENESIS_HEADER.hash)
      assert les_topic == b'LES@41941023680923e0'
      les2_topic = discovery.get_v5_topic(LESProtocolV2, ROPSTEN_GENESIS_HEADER.hash)
      assert les2_topic == b'LES2@41941023680923e0'
  