add missing file

tests/tests_history.py

+import time
+from datetime import datetime, timedelta
+import unittest
+
+from opcua import Client
+from opcua import Server
+from opcua import ua
+from opcua.server.history_sql import HistorySQLite
+
+from tests_common import CommonTests, add_server_methods
+
+port_num1 = 48530
+port_num2 = 48530
+
+
+
+class HistoryCommon(object):
+    srv = Server
+    clt = Client
+
+
+    def test_history_read(self):
+        o = self.srv.get_objects_node()
+        vals = [i for i in range(20)]
+        var = o.add_variable(3, "history_var", 0)
+        self.srv.iserver.enable_history(var, period=None, count=10)
+        for i in vals:
+            var.set_value(i)
+        time.sleep(1)
+
+        now = datetime.now()
+        old = now - timedelta(days=6)
+
+        res = var.read_raw_history(None, now, 2)
+        self.assertEqual(len(res), 2)
+        self.assertEqual(res[-1].Value.Value, vals[-1])
+
+        res = var.read_raw_history(old, now, 0)
+        self.assertEqual(len(res), 20)
+        self.assertEqual(res[-1].Value.Value, vals[-1])
+        self.assertEqual(res[0].Value.Value, vals[0])
+
+        res = var.read_raw_history(old, now, 5)
+        self.assertEqual(len(res), 5)
+        self.assertEqual(res[-1].Value.Value, vals[4])
+        self.assertEqual(res[0].Value.Value, vals[0])
+
+
+
+class TestHistory(unittest.TestCase, HistoryCommon):
+
+    '''
+    '''
+    @classmethod
+    def setUpClass(self):
+        # start our own server
+        self.srv = Server()
+        self.srv.set_endpoint('opc.tcp://localhost:%d' % port_num1)
+        self.srv.start()
+
+        # start anonymous client
+        self.clt = Client('opc.tcp://localhost:%d' % port_num1)
+        self.clt.connect()
+
+    @classmethod
+    def tearDownClass(self):
+        self.clt.disconnect()
+        self.srv.stop()
+
+
+class TestHistorySQL(unittest.TestCase, HistoryCommon):
+
+    '''
+    '''
+    @classmethod
+    def setUpClass(self):
+        # start our own server
+        self.srv = Server()
+        self.srv.set_endpoint('opc.tcp://localhost:%d' % port_num1)
+        self.srv.iserver.history_manager.set_storage(HistorySQLite())
+        self.srv.start()
+
+        # start anonymous client
+        self.clt = Client('opc.tcp://localhost:%d' % port_num1)
+        self.clt.connect()
+
+    @classmethod
+    def tearDownClass(self):
+        self.clt.disconnect()
+        self.srv.stop()
+
+
+
+
+
+
+
+