def test_resolve(self):
dns_client_mock = Mock()
service_name = "test_service.example.com"
host_name = "example.com"
answer_srv = dns.RRHeader(
type=dns.SRV,
payload=dns.Record_SRV(
target=host_name,
)
)
dns_client_mock.lookupService.return_value = defer.succeed(
([answer_srv], None, None),
)
cache = {}
servers = yield resolve_service(
service_name, dns_client=dns_client_mock, cache=cache
)
dns_client_mock.lookupService.assert_called_once_with(service_name)
self.assertEquals(len(servers), 1)
self.assertEquals(servers, cache[service_name])
self.assertEquals(servers[0].host, host_name)
def test_resolve(self):
dns_client_mock = Mock()
service_name = "test_service.examle.com"
host_name = "example.com"
ip_address = "127.0.0.1"
answer_srv = dns.RRHeader(type=dns.SRV,
payload=dns.Record_SRV(target=host_name, ))
answer_a = dns.RRHeader(type=dns.A,
payload=dns.Record_A(address=ip_address, ))
dns_client_mock.lookupService.return_value = ([answer_srv], None, None)
dns_client_mock.lookupAddress.return_value = ([answer_a], None, None)
cache = {}
servers = yield resolve_service(service_name,
dns_client=dns_client_mock,
cache=cache)
dns_client_mock.lookupService.assert_called_once_with(service_name)
dns_client_mock.lookupAddress.assert_called_once_with(host_name)
self.assertEquals(len(servers), 1)
self.assertEquals(servers, cache[service_name])
self.assertEquals(servers[0].host, ip_address)
def test_empty_cache(self):
dns_client_mock = Mock()
dns_client_mock.lookupService.return_value = defer.fail(error.DNSServerError())
service_name = "test_service.example.com"
cache = {}
with self.assertRaises(error.DNSServerError):
yield resolve_service(service_name, dns_client=dns_client_mock, cache=cache)
def test_empty_cache(self):
dns_client_mock = Mock()
dns_client_mock.lookupService.return_value = defer.fail(error.DNSServerError())
service_name = "test_service.examle.com"
cache = {}
with self.assertRaises(error.DNSServerError):
yield resolve_service(
service_name, dns_client=dns_client_mock, cache=cache
)
def test_name_error(self):
dns_client_mock = Mock()
dns_client_mock.lookupService.return_value = defer.fail(error.DNSNameError())
service_name = "test_service.examle.com"
cache = {}
servers = yield resolve_service(
service_name, dns_client=dns_client_mock, cache=cache
)
self.assertEquals(len(servers), 0)
self.assertEquals(len(cache), 0)
def test_name_error(self):
dns_client_mock = Mock()
dns_client_mock.lookupService.return_value = defer.fail(error.DNSNameError())
service_name = "test_service.examle.com"
cache = {}
servers = yield resolve_service(
service_name, dns_client=dns_client_mock, cache=cache
)
self.assertEquals(len(servers), 0)
self.assertEquals(len(cache), 0)
def test_from_cache(self):
dns_client_mock = Mock()
dns_client_mock.lookupService.return_value = defer.fail(
error.DNSServerError())
service_name = "test_service.examle.com"
cache = {service_name: [object()]}
servers = yield resolve_service(service_name,
dns_client=dns_client_mock,
cache=cache)
dns_client_mock.lookupService.assert_called_once_with(service_name)
self.assertEquals(len(servers), 1)
self.assertEquals(servers, cache[service_name])
def test_from_cache(self):
dns_client_mock = Mock()
dns_client_mock.lookupService.return_value = defer.fail(error.DNSServerError())
service_name = "test_service.examle.com"
cache = {
service_name: [object()]
}
servers = yield resolve_service(
service_name, dns_client=dns_client_mock, cache=cache
)
dns_client_mock.lookupService.assert_called_once_with(service_name)
self.assertEquals(len(servers), 1)
self.assertEquals(servers, cache[service_name])
def test_from_cache_expired_and_dns_fail(self):
dns_client_mock = Mock()
dns_client_mock.lookupService.return_value = defer.fail(error.DNSServerError())
service_name = "test_service.example.com"
entry = Mock(spec_set=["expires"])
entry.expires = 0
cache = {service_name: [entry]}
servers = yield resolve_service(
service_name, dns_client=dns_client_mock, cache=cache
)
dns_client_mock.lookupService.assert_called_once_with(service_name)
self.assertEquals(len(servers), 1)
self.assertEquals(servers, cache[service_name])
def test_from_cache_expired_and_dns_fail(self):
dns_client_mock = Mock()
dns_client_mock.lookupService.return_value = defer.fail(
error.DNSServerError())
service_name = "test_service.examle.com"
entry = Mock(spec_set=["expires"])
entry.expires = 0
cache = {service_name: [entry]}
servers = yield resolve_service(service_name,
dns_client=dns_client_mock,
cache=cache)
dns_client_mock.lookupService.assert_called_once_with(service_name)
self.assertEquals(len(servers), 1)
self.assertEquals(servers, cache[service_name])
def test_from_cache(self):
clock = MockClock()
dns_client_mock = Mock(spec_set=['lookupService'])
dns_client_mock.lookupService = Mock(spec_set=[])
service_name = "test_service.example.com"
entry = Mock(spec_set=["expires"])
entry.expires = 999999999
cache = {service_name: [entry]}
servers = yield resolve_service(
service_name, dns_client=dns_client_mock, cache=cache, clock=clock
)
self.assertFalse(dns_client_mock.lookupService.called)
self.assertEquals(len(servers), 1)
self.assertEquals(servers, cache[service_name])
def test_from_cache(self):
clock = MockClock()
dns_client_mock = Mock(spec_set=['lookupService'])
dns_client_mock.lookupService = Mock(spec_set=[])
service_name = "test_service.example.com"
entry = Mock(spec_set=["expires"])
entry.expires = 999999999
cache = {service_name: [entry]}
servers = yield resolve_service(service_name,
dns_client=dns_client_mock,
cache=cache,
clock=clock)
self.assertFalse(dns_client_mock.lookupService.called)
self.assertEquals(len(servers), 1)
self.assertEquals(servers, cache[service_name])
def test_resolve(self):
dns_client_mock = Mock()
service_name = "test_service.examle.com"
host_name = "example.com"
ip_address = "127.0.0.1"
answer_srv = dns.RRHeader(
type=dns.SRV,
payload=dns.Record_SRV(
target=host_name,
)
)
answer_a = dns.RRHeader(
type=dns.A,
payload=dns.Record_A(
address=ip_address,
)
)
dns_client_mock.lookupService.return_value = ([answer_srv], None, None)
dns_client_mock.lookupAddress.return_value = ([answer_a], None, None)
cache = {}
servers = yield resolve_service(
service_name, dns_client=dns_client_mock, cache=cache
)
dns_client_mock.lookupService.assert_called_once_with(service_name)
dns_client_mock.lookupAddress.assert_called_once_with(host_name)
self.assertEquals(len(servers), 1)
self.assertEquals(servers, cache[service_name])
self.assertEquals(servers[0].host, ip_address)