add a 2 node test

re6st/tests/test_network/network_build.py

+from sys import prefix
 import nemu
 import weakref
 import ipaddress
@@ -30,7 +31,7 @@ class Node(nemu.Node):
                     return addr
 
     def connect_network(self, internet):
-        """ create a p2p interface with internet, and assaing ipaddress for
+        """ create a p2p interface with internet, and asgin ipaddress for
         interface
 
         internet: Internet object
@@ -145,9 +146,34 @@ def network_demo():
 
 
     for node in [m0, m1, m2, m3, m4, m5]:
-        app0 = m1.Popen(["ping", "-c", "1", registry.ip], stdout=PIPE)
+        app0 = node.Popen(["ping", "-c", "1", registry.ip], stdout=PIPE)
         ret = app0.wait()
         assert ret == 0, "network construct failed"
 
 
     return nm
+
+
+def network_direct():
+    """one server and one client connect direct"""
+    registry = Node()
+    m0 = Node()
+    nm = NetManager()
+    nm.registrys = {registry: [m0]}
+
+    re_if_0, m_if_0 = nemu.P2PInterface.create_pair(registry, m0)
+    
+    registry._ip = u"10.1.2.1"
+    re_if_0.add_v4_address(u"10.1.2.1", prefix_len=24)
+    
+    m_if_0.add_v4_address(u"10.1.2.2", prefix_len=24)
+    re_if_0.up = m_if_0.up = True
+
+    for node in [m0]:
+        app0 = node.Popen(["ping", "-c", "1", "10.1.2.1"], stdout=PIPE)
+        ret = app0.wait()
+        assert ret == 0, "network construct failed"
+    return nm
+        
+if __name__ == "__main__":
+    network_direct()

re6st/tests/test_network/test_ping.py

@@ -78,7 +78,7 @@ class TestPing(unittest.TestCase):
         """create a network demo, test the connectivity by ping
         wait the network stable then ping 3 times
         """
-        nm = network_demo()
+        nm = network_direct()
         net = nm.registrys
         nodes = []
         registrys = []