text: #!/usr/bin/env python
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  import time
  import unittest
  
  import config
  import mle
  import node
  
  LEADER = 1
  REED = 2
  ROUTER2 = 3
  ROUTER1 = 4
  
  
  class Cert_5_1_11_REEDAttachLinkQuality(unittest.TestCase):
  
      def setUp(self):
          self.simulator = config.create_default_simulator()
  
          self.nodes = {}
          for i in range(1, 5):
              self.nodes[i] = node.Node(i, simulator=self.simulator)
  
          self.nodes[LEADER].set_panid(0xface)
          self.nodes[LEADER].set_mode('rsdn')
          self.nodes[LEADER].add_whitelist(self.nodes[REED].get_addr64())
          self.nodes[LEADER].add_whitelist(self.nodes[ROUTER2].get_addr64())
          self.nodes[LEADER].enable_whitelist()
  
          self.nodes[REED].set_panid(0xface)
          self.nodes[REED].set_mode('rsdn')
          self.nodes[REED].add_whitelist(self.nodes[LEADER].get_addr64())
          self.nodes[REED].add_whitelist(self.nodes[ROUTER1].get_addr64())
          self.nodes[REED].set_router_upgrade_threshold(0)
          self.nodes[REED].enable_whitelist()
  
          self.nodes[ROUTER2].set_panid(0xface)
          self.nodes[ROUTER2].set_mode('rsdn')
          self.nodes[ROUTER2].add_whitelist(self.nodes[LEADER].get_addr64())
          self.nodes[ROUTER2].add_whitelist(self.nodes[ROUTER1].get_addr64(), rssi=-85)
          self.nodes[ROUTER2].enable_whitelist()
          self.nodes[ROUTER2].set_router_selection_jitter(1)
  
          self.nodes[ROUTER1].set_panid(0xface)
          self.nodes[ROUTER1].set_mode('rsdn')
          self.nodes[ROUTER1].add_whitelist(self.nodes[REED].get_addr64())
          self.nodes[ROUTER1].add_whitelist(self.nodes[ROUTER2].get_addr64())
          self.nodes[ROUTER1].enable_whitelist()
          self.nodes[ROUTER1].set_router_selection_jitter(1)
  
      def tearDown(self):
          for node in list(self.nodes.values()):
              node.stop()
              node.destroy()
          self.simulator.stop()
  
      def test(self):
          self.nodes[LEADER].start()
          self.simulator.go(5)
          self.assertEqual(self.nodes[LEADER].get_state(), 'leader')
  
          self.nodes[REED].start()
          self.simulator.go(5)
          self.assertEqual(self.nodes[REED].get_state(), 'child')
  
          self.nodes[ROUTER2].start()
          self.simulator.go(5)
          self.assertEqual(self.nodes[ROUTER2].get_state(), 'router')
  
          self.nodes[ROUTER1].start()
          self.simulator.go(10)
          self.assertEqual(self.nodes[ROUTER1].get_state(), 'router')
          self.assertEqual(self.nodes[REED].get_state(), 'router')
  
          leader_messages = self.simulator.get_messages_sent_by(LEADER)
          reed_messages = self.simulator.get_messages_sent_by(REED)
          router1_messages = self.simulator.get_messages_sent_by(ROUTER1)
          router2_messages = self.simulator.get_messages_sent_by(ROUTER2)
  
          # 1 - Leader. REED1, Router2
          leader_messages.next_mle_message(mle.CommandType.ADVERTISEMENT)
  
          reed_messages.next_mle_message(mle.CommandType.PARENT_REQUEST)
          leader_messages.next_mle_message(mle.CommandType.PARENT_RESPONSE)
  
          reed_messages.next_mle_message(mle.CommandType.CHILD_ID_REQUEST)
          leader_messages.next_mle_message(mle.CommandType.CHILD_ID_RESPONSE)
  
          router2_messages.next_mle_message(mle.CommandType.PARENT_REQUEST)
          leader_messages.next_mle_message(mle.CommandType.PARENT_RESPONSE)
  
          router2_messages.next_mle_message(mle.CommandType.CHILD_ID_REQUEST)
          leader_messages.next_mle_message(mle.CommandType.CHILD_ID_RESPONSE)
  
          msg = router2_messages.next_coap_message("0.02")
          msg.assertCoapMessageRequestUriPath("/a/as")
  
          msg = leader_messages.next_coap_message("2.04")
  
          router2_messages.next_mle_message(mle.CommandType.ADVERTISEMENT)
  
          # 3 - Router1
          msg = router1_messages.next_mle_message(mle.CommandType.PARENT_REQUEST)
          msg.assertSentWithHopLimit(255)
          msg.assertSentToDestinationAddress("ff02::2")
          msg.assertMleMessageContainsTlv(mle.Mode)
          msg.assertMleMessageContainsTlv(mle.Challenge)
          msg.assertMleMessageContainsTlv(mle.ScanMask)
          msg.assertMleMessageContainsTlv(mle.Version)
  
          scan_mask_tlv = msg.get_mle_message_tlv(mle.ScanMask)
          self.assertEqual(1, scan_mask_tlv.router)
          self.assertEqual(0, scan_mask_tlv.end_device)
  
          # 4 - Router2
          msg = router2_messages.next_mle_message(mle.CommandType.PARENT_RESPONSE)
          msg.assertSentToNode(self.nodes[ROUTER1])
  
          # 5 - Router1
          msg = router1_messages.next_mle_message(mle.CommandType.PARENT_REQUEST)
          msg.assertSentWithHopLimit(255)
          msg.assertSentToDestinationAddress("ff02::2")
          msg.assertMleMessageContainsTlv(mle.Mode)
          msg.assertMleMessageContainsTlv(mle.Challenge)
          msg.assertMleMessageContainsTlv(mle.ScanMask)
          msg.assertMleMessageContainsTlv(mle.Version)
  
          scan_mask_tlv = msg.get_mle_message_tlv(mle.ScanMask)
          self.assertEqual(1, scan_mask_tlv.router)
          self.assertEqual(1, scan_mask_tlv.end_device)
  
          # 6 - Router1
          msg = router1_messages.next_mle_message(mle.CommandType.CHILD_ID_REQUEST)
          msg.assertMleMessageContainsTlv(mle.LinkLayerFrameCounter)
          msg.assertMleMessageContainsTlv(mle.Mode)
          msg.assertMleMessageContainsTlv(mle.Response)
          msg.assertMleMessageContainsTlv(mle.Timeout)
          msg.assertMleMessageContainsTlv(mle.TlvRequest)
          msg.assertMleMessageContainsTlv(mle.Version)
          msg.assertMleMessageContainsOptionalTlv(mle.MleFrameCounter)
          msg.assertMleMessageDoesNotContainTlv(mle.AddressRegistration)
          msg.assertSentToNode(self.nodes[REED])
  
          msg = reed_messages.next_mle_message(mle.CommandType.CHILD_ID_RESPONSE)
          msg.assertSentToNode(self.nodes[ROUTER1])
  
  if __name__ == '__main__':
      unittest.main()
  