Test interaction with the simulation lib

Send events and read back system state

test/iterators/work/simulation/mc.py

@@ -3,32 +3,64 @@
 import ctypes
 import observer_asn
 
+from opengeode import Asn1scc
+from asn1_value_editor import vn
+import observer_asn
+
 dll = ctypes.CDLL ("libsimulator.so")
 
+# Get the ASN.1 AST from python.stg
+ASN1_AST=Asn1scc.parse_asn1(["observer.asn"],
+                            rename_policy=Asn1scc.ASN1.RenameOnlyConflicting,
+                            ast_version=Asn1scc.ASN1.UniqueEnumeratedNames,
+                            flags=[Asn1scc.ASN1.AstOnly]).types
+
+
+# it is possible to run the model checker:
 #dll.mc_run_exhaustive()
 
-evt = observer_asn.Observable_Event()
+def get_system_state():
+    ''' Return the ASN.1 ctypes value of the current system state '''
+    get_state = dll.global_state
+    class ReturnPointer(ctypes.Structure): pass
+    ReturnHandle = ctypes.POINTER(ReturnPointer)
+    get_state.restype = ReturnHandle
+    state_ptr = get_state()
+    # DONT USE THE FOLLOWING, IT DOES NOT WORK, USE SetData INSTEAD
+    #system_state = observer_asn.System_State (state_ptr)
+    system_state = observer_asn.System_State()
+    system_state.SetData(state_ptr)
+    return system_state
+
+
+def send_event(gser_event : str) -> None:
+    ''' Send an event (input or output) to the TASTE system '''
+    evt = observer_asn.Observable_Event()
+    # Convert the GSER input into the C instance of the type (evt)
+    vn.valueNotationToCTypes(gser_event,
+                             evt,
+                             ASN1_AST["Observable-Event"].type,
+                             observer_asn,
+                             ASN1_AST)
+    evt.Reset()
+    # Send the event to the DLL
+    dll.send_event(evt._ptr)
+
+
+# out events's effect is to create a corresponding input event in the receivers's queue
 testEvent = "output-event: {source simulator-gui, dest orchestrator, event simulator-gui: msg-out: pulse: {p1 4}}"
+send_event(testEvent)
+print(get_system_state().GSER())
+
+# in events are calling the actual PI, so it is better (out events make sense if observers are called between 
+# the out and in)
 testEvent = "input-event: {source simulator-gui, dest orchestrator, event orchestrator: msg-in: pulse: {p1 4}}"
+send_event(testEvent)
+print(get_system_state().GSER())
 
 
 #queue = dll.global_event_queue (type Events_Ty)
 # this would possibly work
-queue_ptr = ctypes.c_int.in_dll(dll, "global_event_queue")
-asn1_queue = observer_asn.Events_Ty (queue_ptr)
-
-
-# this sequence works:
-from opengeode import Asn1scc
-ASN1_AST=Asn1scc.parse_asn1(["observer.asn"], rename_policy=Asn1scc.ASN1.RenameOnlyConflicting, ast_version=Asn1scc.ASN1.UniqueEnumeratedNames, flags=[Asn1scc.ASN1.AstOnly]).types
-from asn1_value_editor import vn
-import observer_asn
-vn.valueNotationToCTypes(testEvent, evt, ASN1_AST["Observable-Event"].type, observer_asn, ASN1_AST)
-evt.Reset()
-dll.send_event(evt._ptr)
-print(asn1_queue.GSER())
-
-# get global system state
-state_ptr = ctypes.c_int.in_dll(dll, "global_state")
-system_state = observer_asn.System_State (state_ptr)
-print(system_state.GSER())
+#queue_ptr = ctypes.c_int.in_dll(dll, "global_event_queue")
+#asn1_queue = observer_asn.Events_Ty()
+#asn1_queue.SetData(queue_ptr)