Implement first test.

software/end-to-end-testing/buildout.hash.cfg

@@ -12,4 +12,4 @@ md5sum = cbaa8e36097f36caf1a377fa71341a09
 
 [test_beremiz.py]
 filename = test_beremiz.py
-md5sum =184920492fc7e1a812e659d91a95a121
+md5sum =4e3263e01dc00e867ed70144219a3551

software/end-to-end-testing/test_beremiz.py

@@ -6,7 +6,6 @@ import unittest
 from opcua import Client
 import slapos.client
 
-
 class EndToEndTestCase(unittest.TestCase):
   @classmethod
   def setUpClass(cls):
@@ -125,5 +124,36 @@ class BeremizTest(EndToEndTestCase):
     cls.waitUntilGreen(instance_name)
     connection_dict = cls.getInstanceInfos(instance_name).connection_dict
 
-  def test_fail(self):
-    self.assertEqual(0, 1)
+  def test_plc_increment_run(self):
+    NUMBER_OF_CHECKS = 100
+    TIMEOUT  = 2
+    OPC_UA_ADDRESS = "opc.tcp://0.0.0.0:4840/"
+    OPC_UA_IDENTIFIER = "ns=1;s=i2c0.relay0"
+
+    # connect to a session at OPC-UA server
+    client = Client(OPC_UA_ADDRESS)
+
+    # for now this is the only test thus we start it without a wrapper
+    test_count = 1
+    test_failures = 0
+    expected_failures = 0
+    try:
+      client.connect()
+      root = client.get_root_node()
+      children_list = root.get_children()
+      var = client.get_node(OPC_UA_IDENTIFIER)
+      for i in range (0, NUMBER_OF_CHECKS):
+        i2c0_relay0_before = var.get_value()
+        print("\ni2c0_relay0 (before) = ", i2c0_relay0_before)
+        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
+        if (i2c0_relay0_after <= i2c0_relay0_before):
+          # counter should have been increased, mark failure
+          test_failures += 1
+    finally:
+      client.disconnect()
+    # no failures
+    self.asserEqual(test_failures, 0)