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import pickle
import unittest
from paramiko.ssh_exception import NoValidConnectionsError
class NoValidConnectionsErrorTest(unittest.TestCase):
def test_pickling(self):
# Regression test for https://github.com/paramiko/paramiko/issues/617
exc = NoValidConnectionsError({("127.0.0.1", "22"): Exception()})
new_exc = pickle.loads(pickle.dumps(exc))
self.assertEqual(type(exc), type(new_exc))
self.assertEqual(str(exc), str(new_exc))
self.assertEqual(exc.args, new_exc.args)
def test_error_message_for_single_host(self):
exc = NoValidConnectionsError({("127.0.0.1", "22"): Exception()})
assert "Unable to connect to port 22 on 127.0.0.1" in str(exc)
def test_error_message_for_two_hosts(self):
exc = NoValidConnectionsError(
{("127.0.0.1", "22"): Exception(), ("::1", "22"): Exception()}
)
assert "Unable to connect to port 22 on 127.0.0.1 or ::1" in str(exc)
def test_error_message_for_multiple_hosts(self):
exc = NoValidConnectionsError(
{
("127.0.0.1", "22"): Exception(),
("::1", "22"): Exception(),
("10.0.0.42", "22"): Exception(),
}
)
exp = "Unable to connect to port 22 on 10.0.0.42, 127.0.0.1 or ::1"
assert exp in str(exc)
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