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# Test that the socket module performs DNS resolutions on bind and connect.
# Currenty only the esp32 port does this, so the test is restricted to that port.
import sys
if sys.implementation.name == "micropython" and sys.platform != "esp32":
print("SKIP")
raise SystemExit
import socket
import unittest
class Test(unittest.TestCase):
def test_bind_resolves_0_0_0_0(self):
s = socket.socket()
self.assertEqual(s.bind(("0.0.0.0", 31245)), None)
s.close()
def test_bind_resolves_localhost(self):
s = socket.socket()
self.assertEqual(s.bind(("localhost", 31245)), None)
s.close()
def test_connect_resolves(self):
s = socket.socket()
self.assertEqual(s.connect(("micropython.org", 80)), None)
s.close()
def test_connect_non_existent(self):
s = socket.socket()
with self.assertRaises(OSError):
s.connect(("nonexistent.example.com", 80))
s.close()
if __name__ == "__main__":
unittest.main()
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