def test_cache_corrupted(write_mock, read_mock):
instance = common.generate_instance_config(common.SUPPORTED_METRIC_TYPES)
instance.pop('ip_address')
instance['network_address'] = '192.168.0.0/24'
read_mock.return_value = '["192.168.0."]'
check = SnmpCheck('snmp', {}, [instance])
check._thread_factory = lambda **kwargs: mock.Mock()
check.check(instance)
assert not check._config.discovered_instances
write_mock.assert_called_once_with('', '[]')
def test_cache_discovered_host(read_mock):
instance = common.generate_instance_config(common.SUPPORTED_METRIC_TYPES)
instance.pop('ip_address')
instance['network_address'] = '192.168.0.0/24'
read_mock.return_value = '["192.168.0.1"]'
check = SnmpCheck('snmp', {}, [instance])
check._thread_factory = lambda **kwargs: mock.Mock()
check.check(instance)
assert '192.168.0.1' in check._config.discovered_instances
