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import time |
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from datetime import datetime, timedelta |
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import unittest |
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from opcua import Client |
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from opcua import Server |
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from opcua import ua |
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from opcua.server.history_sql import HistorySQLite |
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from tests_common import CommonTests, add_server_methods |
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port_num1 = 48530 |
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port_num2 = 48530 |
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class HistoryCommon(object): |
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srv = Server |
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clt = Client |
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def start_server_and_client(self): |
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self.srv = Server() |
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self.srv.set_endpoint('opc.tcp://localhost:%d' % port_num1) |
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self.srv.start() |
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self.clt = Client('opc.tcp://localhost:%d' % port_num1) |
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self.clt.connect() |
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def stop_server_and_client(self): |
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self.clt.disconnect() |
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self.srv.stop() |
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def create_var(self): |
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o = self.srv.get_objects_node() |
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self.values = [i for i in range(20)] |
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self.var = o.add_variable(3, "history_var", 0) |
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self.srv.iserver.enable_history(self.var, period=None, count=10) |
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for i in self.values: |
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self.var.set_value(i) |
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time.sleep(1) |
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def test_history_read_one(self): |
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res = self.var.read_raw_history(None, None, 1) |
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self.assertEqual(len(res), 1) |
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self.assertEqual(res[0].Value.Value, self.values[-1]) |
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# no start and no end is not defined by spec, return reverse order |
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def test_history_read_none(self): |
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# FIXME not sure this once is supported by spec |
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res = self.var.read_raw_history(None, None, 0) |
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self.assertEqual(len(res), 20) |
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self.assertEqual(res[0].Value.Value, self.values[-1]) # self.values was 0 |
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self.assertEqual(res[-1].Value.Value, self.values[0]) # self.values was -1 |
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# no start and no end is not defined by spec, return reverse order |
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def test_history_read_last_3(self): |
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res = self.var.read_raw_history(None, None, 3) |
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self.assertEqual(len(res), 3) |
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self.assertEqual(res[-1].Value.Value, self.values[-3]) # self.values was -1 |
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self.assertEqual(res[0].Value.Value, self.values[-1]) # self.values was -3 |
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# no start and no end is not defined by spec, return reverse order |
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def test_history_read_all2(self): |
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res = self.var.read_raw_history(None, None, 9999) |
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self.assertEqual(len(res), 20) |
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self.assertEqual(res[-1].Value.Value, self.values[0]) # self.values was -1 |
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self.assertEqual(res[0].Value.Value, self.values[-1]) # self.values was 0 |
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# only has end time, should return reverse order |
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def test_history_read_2_with_end(self): |
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now = datetime.utcnow() |
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old = now - timedelta(days=6) |
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res = self.var.read_raw_history(None, now, 2) |
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self.assertEqual(len(res), 2) |
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self.assertEqual(res[-1].Value.Value, self.values[-2]) # self.values was -1 |
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View Code Duplication |
def test_history_read_all(self): |
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now = datetime.utcnow() |
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old = now - timedelta(days=6) |
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res = self.var.read_raw_history(old, now, 0) |
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self.assertEqual(len(res), 20) |
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self.assertEqual(res[-1].Value.Value, self.values[-1]) |
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self.assertEqual(res[0].Value.Value, self.values[0]) |
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View Code Duplication |
def test_history_read_5_in_timeframe(self): |
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now = datetime.utcnow() |
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old = now - timedelta(days=6) |
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res = self.var.read_raw_history(old, now, 5) |
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self.assertEqual(len(res), 5) |
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self.assertEqual(res[-1].Value.Value, self.values[4]) |
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self.assertEqual(res[0].Value.Value, self.values[0]) |
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# start time greater than end time, should return reverse order |
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View Code Duplication |
def test_history_read_5_in_timeframe_start_greater_than_end(self): |
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now = datetime.utcnow() |
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old = now - timedelta(days=6) |
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res = self.var.read_raw_history(now, old, 5) |
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self.assertEqual(len(res), 5) |
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self.assertEqual(res[-1].Value.Value, self.values[-5]) |
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self.assertEqual(res[0].Value.Value, self.values[-1]) |
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class TestHistory(unittest.TestCase, HistoryCommon): |
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@classmethod |
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def setUpClass(self): |
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self.start_server_and_client(self) |
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self.create_var(self) |
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@classmethod |
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def tearDownClass(self): |
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self.stop_server_and_client(self) |
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class TestHistorySQL(unittest.TestCase, HistoryCommon): |
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@classmethod |
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def setUpClass(self): |
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self.start_server_and_client(self) |
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self.srv.iserver.history_manager.set_storage(HistorySQLite(":memory:")) |
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self.create_var(self) |
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@classmethod |
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def tearDownClass(self): |
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self.stop_server_and_client(self) |
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FreeOpcUa /
python-opcua
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