Add a test to avoid working on empty model

biocham_jupyter/guinbextension/src/config/workflows/commands.py

@@ -30,6 +30,7 @@ commands = [
     "check_conservations",
     "check_ctl",
     "check_ltl",
+    "check_model",
     "check_multistability",
     "check_oscillations",
     "cleanup_ctl",

models.pl

@@ -315,23 +315,29 @@ check_model :-
     identifier_kind(ModelId, Molecule, object),
     List_Molecule
   ),
-  reactions_with_species(List_Molecule, List_Reaction),
   (
-    forall(
-      member(Reaction, List_Reaction),
-      test_wellformed(List_Molecule, Reaction)
-    )
-  ->
-    format("The model is wellformed.~n", [])
-  ;
-    format("The model is NOT wellformed.~n", [])
-  ),
-  (
-    maplist(test_all_reactions(catalyst, test_strictness), List_Molecule)
+    List_Molecule = []
   ->
-    format("The model is strict.~n", [])
+    format("There is currently no model to work on!~n", [])
   ;
-    format("The model is NOT strict.~n", [])
+    reactions_with_species(List_Molecule, List_Reaction),
+    (
+      forall(
+        member(Reaction, List_Reaction),
+        test_wellformed(List_Molecule, Reaction)
+      )
+    ->
+      format("The model is wellformed.~n", [])
+    ;
+      format("The model is NOT wellformed.~n", [])
+    ),
+    (
+      maplist(test_all_reactions(catalyst, test_strictness), List_Molecule)
+    ->
+      format("The model is strict.~n", [])
+    ;
+      format("The model is NOT strict.~n", [])
+    )
   ).
 
 :- devdoc('\\section{Public API}').