text: #!/usr/bin/env python
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  import time
  import unittest
  
  import config
  import node
  
  LEADER = 1
  ROUTER = 2
  ED2 = 3
  SED2 = 4
  
  MTDS = [ED2, SED2]
  
  class Cert_7_1_2_BorderRouterAsRouter(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, (i in MTDS), simulator=self.simulator)
  
          self.nodes[LEADER].set_panid(0xface)
          self.nodes[LEADER].set_mode('rsdn')
          self.nodes[LEADER].add_whitelist(self.nodes[ROUTER].get_addr64())
          self.nodes[LEADER].enable_whitelist()
  
          self.nodes[ROUTER].set_panid(0xface)
          self.nodes[ROUTER].set_mode('rsdn')
          self.nodes[ROUTER].add_whitelist(self.nodes[LEADER].get_addr64())
          self.nodes[ROUTER].add_whitelist(self.nodes[ED2].get_addr64())
          self.nodes[ROUTER].add_whitelist(self.nodes[SED2].get_addr64())
          self.nodes[ROUTER].enable_whitelist()
          self.nodes[ROUTER].set_router_selection_jitter(1)
  
          self.nodes[ED2].set_panid(0xface)
          self.nodes[ED2].set_mode('rsn')
          self.nodes[ED2].add_whitelist(self.nodes[ROUTER].get_addr64())
          self.nodes[ED2].enable_whitelist()
  
          self.nodes[SED2].set_panid(0xface)
          self.nodes[SED2].set_mode('s')
          self.nodes[SED2].add_whitelist(self.nodes[ROUTER].get_addr64())
          self.nodes[SED2].enable_whitelist()
          self.nodes[SED2].set_timeout(config.DEFAULT_CHILD_TIMEOUT)
  
      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[ROUTER].start()
          self.simulator.go(5)
          self.assertEqual(self.nodes[ROUTER].get_state(), 'router')
  
          self.nodes[ROUTER].add_prefix('2001:2:0:1::/64', 'paros')
          self.nodes[ROUTER].add_prefix('2001:2:0:2::/64', 'paro')
          self.nodes[ROUTER].register_netdata()
  
          # Set lowpan context of sniffer
          self.simulator.set_lowpan_context(1, '2001:2:0:1::/64')
          self.simulator.set_lowpan_context(2, '2001:2:0:2::/64')
  
          self.nodes[ED2].start()
          self.simulator.go(5)
          self.assertEqual(self.nodes[ED2].get_state(), 'child')
  
          self.nodes[SED2].start()
          self.simulator.go(5)
          self.assertEqual(self.nodes[SED2].get_state(), 'child')
  
          addrs = self.nodes[ED2].get_addrs()
          self.assertTrue(any('2001:2:0:1' in addr[0:10] for addr in addrs))
          self.assertTrue(any('2001:2:0:2' in addr[0:10] for addr in addrs))
          for addr in addrs:
              if addr[0:10] == '2001:2:0:1' or addr[0:10] == '2001:2:0:2':
                  self.assertTrue(self.nodes[LEADER].ping(addr))
  
          addrs = self.nodes[SED2].get_addrs()
          self.assertTrue(any('2001:2:0:1' in addr[0:10] for addr in addrs))
          self.assertFalse(any('2001:2:0:2' in addr[0:10] for addr in addrs))
          for addr in addrs:
              if addr[0:10] == '2001:2:0:1' or addr[0:10] == '2001:2:0:2':
                  self.assertTrue(self.nodes[LEADER].ping(addr))
  
  if __name__ == '__main__':
      unittest.main()
  