some basic dns tests

--HG--
extra : transplant_source : %876%5Dg%BE%D6%1E5%3C2%BF%2A%D8a%0B%D5%FAU%0A-

greentest/test__socket_dns.py

+#!/usr/bin/python
+from gevent import monkey; monkey.patch_all()
+from gevent import socket
+
+import unittest
+
+class GetAddrInfoTest(unittest.TestCase):
+
+    def test_localhost(self):
+        socket.getaddrinfo('localhost', 0)
+        socket.getaddrinfo('127.0.0.1', 0)
+
+    def test_google(self):
+        socket.getaddrinfo('www.google.com', 80)
+
+class GetNameInfoTest(unittest.TestCase):
+
+    def test_localhost(self):
+        socket.getnameinfo(('127.0.0.1', 0), 0)
+
+    def test_google(self):
+        socket.getnameinfo(('74.125.19.105', 80), 0)
+
+class GetHostByNameTest(unittest.TestCase):
+
+    def test_localhost(self):
+        socket.gethostbyname('localhost')
+        socket.gethostbyname('127.0.0.1')
+
+    def test_google(self):
+        socket.gethostbyname('www.google.com')
+
+if __name__ == "__main__":
+    unittest.main()
+