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""" |
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Test an OPC-UA server with freeopcua python client |
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""" |
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import sys |
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import pytest |
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import asyncio |
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import logging |
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from datetime import datetime |
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from asyncua import ua |
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from asyncua import Client |
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class MySubHandler: |
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""" |
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More advanced subscription client using Future, so we can wait for events in tests |
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""" |
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def __init__(self): |
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self.future = asyncio.Future() |
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def reset(self): |
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self.future = asyncio.Future() |
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def datachange_notification(self, node, val, data): |
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self.future.set_result((node, val, data)) |
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def event_notification(self, event): |
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self.future.set_result(event) |
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class MySubHandler2(object): |
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def __init__(self): |
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self.results = [] |
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def datachange_notification(self, node, val, data): |
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self.results.append((node, val)) |
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def event_notification(self, event): |
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self.results.append(event) |
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def connect(func): |
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def wrapper(self): |
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try: |
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client = Client(URL) |
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client.connect() |
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func(self, client) |
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finally: |
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client.disconnect() |
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return wrapper |
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def test_connect_anonymous(self): |
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c = Client(URL) |
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c.connect() |
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c.disconnect() |
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def FINISH_test_connect_basic256(self): |
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c = Client(URL) |
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c.set_security_string("basic256,sign,XXXX") |
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c.connect() |
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c.disconnect() |
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def test_find_servers(self): |
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c = Client(URL) |
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res = c.connect_and_find_servers() |
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assert len(res) > 0 |
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def test_find_endpoints(self): |
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c = Client(URL) |
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res = c.connect_and_get_server_endpoints() |
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assert len(res) > 0 |
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# @connect |
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def test_get_root(self, client): |
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root = client.get_root_node() |
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self.assertEqual(root.get_browse_name(), ua.QualifiedName("Root", 0)) |
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# @connect |
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def test_get_root_children(self, client): |
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root = client.get_root_node() |
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childs = root.get_children() |
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assert len(childs) > 2 |
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87
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# @connect |
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async def test_get_namespace_array(self, client): |
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array = await client.get_namespace_array() |
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assert len(array) > 0 |
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# @connect |
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def test_get_server_node(self, client): |
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srv = client.get_server_node() |
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self.assertEqual(srv.get_browse_name(), ua.QualifiedName("Server", 0)) |
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#childs = srv.get_children() |
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#assert len(childs) > 4) |
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# @connect |
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def test_browsepathtonodeid(self, client): |
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root = client.get_root_node() |
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node = root.get_child(["0:Objects", "0:Server" , "0:ServerArray"]) |
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self.assertEqual(node.get_browse_name(), ua.QualifiedName("ServerArray", 0)) |
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105
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# @connect |
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def test_subscribe_server_time(self, client): |
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msclt = MySubHandler() |
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server_time_node = client.get_node(ua.NodeId(ua.ObjectIds.Server_ServerStatus_CurrentTime)) |
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sub = client.create_subscription(200, msclt) |
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handle = sub.subscribe_data_change(server_time_node) |
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node, val, data = msclt.future.result() |
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self.assertEqual(node, server_time_node) |
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delta = datetime.utcnow() - val |
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print("Timedelta is ", delta) |
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#assert delta < timedelta(seconds=2)) |
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sub.unsubscribe(handle) |
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sub.delete() |
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122
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123
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if __name__ == "__main__": |
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logging.basicConfig(level=logging.WARN) |
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125
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# FIXME add better arguments parsing with possibility to specify |
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126
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# username and password and encryption |
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127
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if len(sys.argv) < 2: |
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128
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print("This script is meant to test compatibilty to a server with freeopcua python client library") |
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print("Usage: test_server.py url") |
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130
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sys.exit(1) |
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131
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else: |
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132
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URL = sys.argv[1] |
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133
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134
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unittest.main(verbosity=30, argv=sys.argv[:1]) |
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136
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FreeOpcUa /
opcua-asyncio
