add fischer test

pta2maude/src/Parser.py

@@ -1003,8 +1003,9 @@ class InterpreterParser(Parser):
             ]
         )
 
-        agents = ", ".join([automaton.name.title() for automaton in model.automata])
-        init_eq_str = f"eq {label} = {{ {agents} }}\n{tab}< {config} >\n{tab}."
+        agents = sorted([automaton.name.title() for automaton in model.automata])
+        agents_str = ", ".join(agents)
+        init_eq_str = f"eq {label} = {{ {agents_str} }}\n{tab}< {config} >\n{tab}."
 
         eq = f"""
             {init_op}

pta2maude/tests/examples/fischer-intrpr.maude

@@ -4,9 +4,9 @@ mod MODEL is
   extending ANALYSIS .
 
  ops active1 active2 check1 check2 cs1 cs2 idle1 idle2 locaccess1 locaccess2 obs1 obs2 obsviolation obswaiting : -> Location [ctor] .
- ops access_1 access_2 enter_1 enter_2 exit_1 exit_2 no_access_1 no_access_2 try_1 try_2 update_1 update_2 : Action [ctor] .
- op observer proc1 proc2 : -> Agent [ctor] .
- ops x1 x2 : Clock [ctor] .
+ ops access_1 access_2 enter_1 enter_2 exit_1 exit_2 no_access_1 no_access_2 try_1 try_2 update_1 update_2 : -> Action [ctor] .
+ ops observer proc1 proc2 : -> Agent [ctor] .
+ ops x1 x2 : -> Clock [ctor] .
  op turn : -> DVariable [ctor] .
  ops delta gamma : -> Parameter [ctor] .
 
@@ -26,7 +26,7 @@ mod MODEL is
                          (when true sync exit_1 do { turn := -1 } goto idle1)) > .
 
  op Observer : -> Automaton .
- eq Observer = < observer  |
+ eq Observer = < observer |
         (@ obswaiting inv true :
           ( (when true sync enter_1 do {nothing} goto obs1) ,
             (when true sync enter_2 do {nothing} goto obs2))) ,
@@ -40,7 +40,7 @@ mod MODEL is
         .
 
    op init : -> State .
-   eq init = { Observer,  Proc1, Proc2 }
+   eq init = { Observer, Proc1, Proc2 }
               < tick: tickOk
                 locs: (proc1 @ idle1, proc2 @ idle2, observer @ obswaiting)
                 clocks: (x1 : 0, x2 : 0)

pta2maude/tests/test_parser.py

@@ -19,6 +19,7 @@ def remove_spaces(output_str):
         ("ex1xy.imi", "ex1xy-nc.maude", "no-collapsing"),
         ("coffee.imi", "coffee-nc.maude", "no-collapsing"),
         ("coffee.imi", "coffee-intrpr.maude", "interpreter"),
+        ("fischer.imi", "fischer-intrpr.maude", "interpreter"),
     ],
 )
 def test_parser(examples_dir, imitator_file, maude_file, version):