fix: process pending Cumulocity IoT operations after network disconnections

tests/RobotFramework/tests/cumulocity/pending_operations/request_pending_operations.robot

@@ -0,0 +1,37 @@
+*** Settings ***
+Resource            ../../../../resources/common.resource
+Library             Cumulocity
+Library             ThinEdgeIO
+
+Test Setup          Custom Setup
+Test Teardown       Get Logs
+
+Test Tags           theme:c8y    theme:operation
+
+
+*** Test Cases ***
+Process any pending operations after connection disruptions
+    ThinEdgeIO.Bridge Should Be Up    c8y
+
+    # Disconnect (wait 2.5 times the MQTT keepalive interval which defaults to 60s)
+    ThinEdgeIO.Disconnect From Network
+    ThinEdgeIO.Bridge Should Be Down    c8y    timeout=180
+
+    # Create cloud operation whilst the device is disconnected
+    ${operation}=    Cumulocity.Get Configuration    tedge-configuration-plugin
+
+    # Restore connection
+    ThinEdgeIO.Connect To Network
+    ThinEdgeIO.Bridge Should Be Up    c8y
+
+    # WORKAROUND: Request pending operations via SmartREST 2.0
+    # Execute Command    tedge mqtt pub -q 1 c8y/s/us 500
+
+    Operation Should Be SUCCESSFUL    ${operation}
+
+
+*** Keywords ***
+Custom Setup
+    ${DEVICE_SN}=    Setup
+    Set Suite Variable    $DEVICE_SN
+    Device Should Exist    ${DEVICE_SN}