Pass paramaters from CLI.

tests/test_runtime_coupler_increment.py

@@ -4,16 +4,41 @@
 """
 from opcua import Client
 import time
+import argparse
+import configparser
 
-TIMEOUT = 5 # seconds to wait between checks
-NUMBER_OF_CHECKS = 10 # number of times we check the server
-OPC_UA_ADDRESS = "opc.tcp://k2-osie:4840/"
-OPC_UA_IDENTIFIER = "ns=1;s=i2c0.relay0"
+def main():
 
-# connect to a session at OPC-UA server
-client = Client(OPC_UA_ADDRESS)
+  # handle CLI arguments
+  parser = argparse.ArgumentParser()
+  parser.add_argument('--iterations', \
+                      type = int, \
+                      default = 10, \
+                      help='number of iterations to check')
+  parser.add_argument('--timeout', \
+                      type = int, \
+                      default = 5, \
+                      help='seconds to wait between checks')
+  parser.add_argument('--opc-ua-server', \
+                      type = str, \
+                      default = 'opc.tcp://k2-osie:4840/', \
+                      help='Address of OPC-UA server')
+  parser.add_argument('--opc-ua-node-identifier', \
+                      type = str, \
+                      default = 'ns=1;s=i2c0.relay0', \
+                      help='Address of OPC-UA server')
 
-try:
+  args = parser.parse_args()
+  NUMBER_OF_CHECKS = args.iterations
+  TIMEOUT  = args.timeout
+  OPC_UA_ADDRESS = args.opc_ua_server
+  OPC_UA_IDENTIFIER = args.opc_ua_node_identifier
+
+
+  # connect to a session at OPC-UA server
+  client = Client(OPC_UA_ADDRESS)
+
+  try:
     client.connect()
 
     # Client has a few methods to get proxy to UA nodes that should always be in address space such as Root or Objects
@@ -24,12 +49,15 @@ try:
     for i in range (0, NUMBER_OF_CHECKS):
       i2c0_relay0_before = var.get_value()
       print("\ni2c0_relay0 (before) = ", i2c0_relay0_before)
-    print("sleep ...")
+      print("Sleep for %s seconds ..." %TIMEOUT)
       time.sleep(TIMEOUT)
       i2c0_relay0_after = var.get_value()
       print("i2c0_relay0 (after) = ", i2c0_relay0_after)
       # for the wait timeout runtime should have increased the value
       assert i2c0_relay0_after > i2c0_relay0_before
 
-finally:
+  finally:
     client.disconnect()
+
+if __name__ == "__main__":
+  main()