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%%% Copyright 2010-2011 Manolis Papadakis <manopapad@gmail.com>,
%%% Eirini Arvaniti <eirinibob@gmail.com>
%%% and Kostis Sagonas <kostis@cs.ntua.gr>
%%%
%%% This file is part of PropEr.
%%%
%%% PropEr is free software: you can redistribute it and/or modify
%%% it under the terms of the GNU General Public License as published by
%%% the Free Software Foundation, either version 3 of the License, or
%%% (at your option) any later version.
%%%
%%% PropEr is distributed in the hope that it will be useful,
%%% but WITHOUT ANY WARRANTY; without even the implied warranty of
%%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
%%% GNU General Public License for more details.
%%%
%%% You should have received a copy of the GNU General Public License
%%% along with PropEr. If not, see <http://www.gnu.org/licenses/>.
%%% @copyright 2010-2011 Manolis Papadakis, Eirini Arvaniti and Kostis Sagonas
%%% @version {@version}
%%% @author Eirini Arvaniti
-module(symb_statem).
-compile(export_all).
-include_lib("proper/include/proper.hrl").
-record(state, {foo = [],
bar = []}).
initial_state() ->
#state{}.
command(_S) ->
oneof([{call,?MODULE,foo,[integer()]},
{call,?MODULE,bar,[integer()]}]).
precondition(_, _) ->
true.
next_state(S = #state{foo=Foo}, V, {call,_,foo,[_Arg]}) ->
V1 = {call,erlang,element,[1,V]},
S#state{foo = [V1|Foo]};
next_state(S = #state{bar=Bar}, V, {call,_,bar,[_Arg]}) ->
V1 = {call,erlang,hd,[V]},
S#state{foo = [V1|Bar]}.
postcondition(S, {call,_,foo,[_Arg]}, Res) when is_tuple(Res) ->
lists:all(fun is_integer/1, S#state.foo);
postcondition(S, {call,_,bar,[_Arg]}, Res) when is_list(Res) ->
lists:all(fun is_integer/1, S#state.bar);
postcondition(_, _, _) ->
false.
foo(I) when is_integer(I) ->
erlang:make_tuple(3, I).
bar(I) when is_integer(I) ->
lists:duplicate(3, I).
prop_simple() ->
?FORALL(Cmds, commands(?MODULE),
begin
{H,S,Res} = run_commands(?MODULE, Cmds),
?WHENFAIL(
io:format("H: ~w\nState: ~w\n:Res: ~w\n", [H,S,Res]),
Res =:= ok)
end).
prop_parallel_simple() ->
?FORALL(Cmds, parallel_commands(?MODULE),
begin
{S,P,Res} = run_parallel_commands(?MODULE, Cmds),
?WHENFAIL(
io:format("Seq: ~w\nParallel: ~w\n:Res: ~w\n", [S,P,Res]),
Res =:= ok)
end).
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