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test_server.py
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157 lines (119 loc) · 4.8 KB
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import unittest
import ctypes
import logging
import mock
import snap7.snap7types
import snap7.error
import snap7.server
logging.basicConfig(level=logging.WARNING)
class TestServer(unittest.TestCase):
def setUp(self):
self.server = snap7.server.Server()
self.server.start(tcpport=1102)
def tearDown(self):
self.server.stop()
self.server.destroy()
def test_register_area(self):
db1_type = ctypes.c_char * 1024
self.server.register_area(snap7.snap7types.srvAreaDB, 3, db1_type())
def test_error(self):
for error in snap7.error.server_errors:
snap7.common.error_text(error, context="client")
def test_event(self):
event = snap7.snap7types.SrvEvent()
self.server.event_text(event)
def test_get_status(self):
server, cpu, num_clients = self.server.get_status()
def test_get_mask(self):
self.server.get_mask(snap7.snap7types.mkEvent)
self.server.get_mask(snap7.snap7types.mkLog)
# invalid kind
self.assertRaises(Exception, self.server.get_mask, 3)
def test_lock_area(self):
area_code = snap7.snap7types.srvAreaDB
index = 1
db1_type = ctypes.c_char * 1024
# we need to register first
self.server.register_area(area_code, index, db1_type())
self.server.lock_area(code=area_code, index=index)
def test_set_cpu_status(self):
self.server.set_cpu_status(0)
self.server.set_cpu_status(4)
self.server.set_cpu_status(8)
self.assertRaises(AssertionError, self.server.set_cpu_status, -1)
def test_set_mask(self):
self.server.set_mask(kind=snap7.snap7types.mkEvent, mask=10)
def test_unlock_area(self):
area_code = snap7.snap7types.srvAreaDB
index = 1
db1_type = ctypes.c_char * 1024
# we need to register first
self.assertRaises(Exception, self.server.lock_area, area_code, index)
self.server.register_area(area_code, index, db1_type())
self.server.lock_area(area_code, index)
self.server.unlock_area(area_code, index)
def test_unregister_area(self):
area_code = snap7.snap7types.srvAreaDB
index = 1
db1_type = ctypes.c_char * 1024
self.server.register_area(area_code, index, db1_type())
self.server.unregister_area(area_code, index)
def test_events_callback(self):
def event_call_back(event):
logging.debug(event)
self.server.set_events_callback(event_call_back)
def test_read_events_callback(self):
def read_events_call_back(event):
logging.debug(event)
self.server.set_read_events_callback(read_events_call_back)
def test_pick_event(self):
event = self.server.pick_event()
self.assertEqual(type(event), snap7.snap7types.SrvEvent)
event = self.server.pick_event()
self.assertFalse(event)
def test_clear_events(self):
self.server.clear_events()
self.assertFalse(self.server.clear_events())
def test_start_to(self):
self.server.start_to('0.0.0.0')
self.assertRaises(AssertionError, self.server.start_to, 'bogus')
def test_get_param(self):
# check the defaults
self.assertEqual(self.server.get_param(snap7.snap7types.LocalPort), 1102)
self.assertEqual(self.server.get_param(snap7.snap7types.WorkInterval), 100)
self.assertEqual(self.server.get_param(snap7.snap7types.MaxClients), 1024)
# invalid param for server
self.assertRaises(Exception, self.server.get_param,
snap7.snap7types.RemotePort)
class TestServerBeforeStart(unittest.TestCase):
"""
Tests for server before it is started
"""
def setUp(self):
self.server = snap7.server.Server()
def test_set_param(self):
self.server.set_param(snap7.snap7types.LocalPort, 1102)
class TestLibraryIntegration(unittest.TestCase):
def setUp(self):
# replace the function load_library with a mock
self.loadlib_patch = mock.patch('snap7.server.load_library')
self.loadlib_func = self.loadlib_patch.start()
# have load_library return another mock
self.mocklib = mock.MagicMock()
self.loadlib_func.return_value = self.mocklib
# have the Srv_Create of the mock return None
self.mocklib.Srv_Create.return_value = None
def tearDown(self):
# restore load_library
self.loadlib_patch.stop()
def test_create(self):
server = snap7.server.Server(log=False)
self.mocklib.Srv_Create.assert_called_once()
def test_gc(self):
server = snap7.server.Server(log=False)
del server
self.mocklib.Srv_Destroy.assert_called_once()
if __name__ == '__main__':
import logging
logging.basicConfig()
unittest.main()