src/Tools/quickcheck.ML
author bulwahn
Wed, 23 Mar 2011 08:50:31 +0100
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making quickcheck's result value more formal; allowing more result information to be returned after timeout; adding output of timing information in quickcheck
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(*  Title:      Tools/quickcheck.ML
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    Author:     Stefan Berghofer, Florian Haftmann, Lukas Bulwahn, TU Muenchen
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Generic counterexample search engine.
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*)
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signature QUICKCHECK =
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sig
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  val setup: theory -> theory
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  (* configuration *)
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  val auto: bool Unsynchronized.ref
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  val tester : string Config.T
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  val size : int Config.T
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  val iterations : int Config.T
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  val no_assms : bool Config.T
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  val report : bool Config.T
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  val timing : bool Config.T
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  val quiet : bool Config.T
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  val timeout : real Config.T
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  val finite_types : bool Config.T
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  val finite_type_size : int Config.T
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  datatype report = Report of
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    { iterations : int, raised_match_errors : int,
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      satisfied_assms : int list, positive_concl_tests : int }
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  datatype expectation = No_Expectation | No_Counterexample | Counterexample;
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  datatype test_params = Test_Params of {default_type: typ list, expect : expectation};
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  val test_params_of : Proof.context -> test_params
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  val map_test_params : (typ list * expectation -> typ list * expectation)
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    -> Context.generic -> Context.generic
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  val add_generator:
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    string * (Proof.context -> term * term list -> int -> term list option * report option)
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      -> Context.generic -> Context.generic
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  val add_batch_generator:
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    string * (Proof.context -> term list -> (int -> term list option) list)
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      -> Context.generic -> Context.generic
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  datatype result =
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    Result of
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     {counterexample : (string * term) list option,
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      evaluation_terms : (term * term) list option,
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      timings : (string * int) list,
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      reports : (int * report) list}
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  (* testing terms and proof states *)
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  val test_term: Proof.context -> bool * bool -> term * term list -> result
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  val test_goal_terms:
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    Proof.context -> bool * bool -> (string * typ) list -> (term * term list) list  
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      -> result list
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  val quickcheck: (string * string list) list -> int -> Proof.state -> (string * term) list option
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  (* testing a batch of terms *)
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  val test_terms: Proof.context -> term list -> (string * term) list option list option
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end;
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structure Quickcheck : QUICKCHECK =
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struct
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(* preferences *)
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val auto = Unsynchronized.ref false;
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val _ =
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  ProofGeneralPgip.add_preference Preferences.category_tracing
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  (Unsynchronized.setmp auto true (fn () =>
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    Preferences.bool_pref auto
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      "auto-quickcheck"
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      "Run Quickcheck automatically.") ());
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(* quickcheck report *)
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datatype report = Report of
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  { iterations : int, raised_match_errors : int,
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    satisfied_assms : int list, positive_concl_tests : int }
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(* Quickcheck Result *)
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datatype result = Result of
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  { counterexample : (string * term) list option, evaluation_terms : (term * term) list option,
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    timings : (string * int) list, reports : (int * report) list}
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val empty_result =
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  Result {counterexample = NONE, evaluation_terms = NONE, timings = [], reports = []}
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fun counterexample_of (Result r) = #counterexample r
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fun found_counterexample (Result r) = is_some (#counterexample r)
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fun response_of (Result r) = case (#counterexample r, #evaluation_terms r) of
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    (SOME ts, SOME evals) => SOME (ts, evals)
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  | (NONE, NONE) => NONE
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fun timings_of (Result r) = #timings r
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fun set_reponse names eval_terms (SOME ts) (Result r) =
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  let
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    val (ts1, ts2) = chop (length names) ts
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  in
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    Result {counterexample = SOME (names ~~ ts1), evaluation_terms = SOME (eval_terms ~~ ts2),
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      timings = #timings r, reports = #reports r}
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  end
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  | set_reponse _ _ NONE result = result
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fun cons_timing timing (Result r) =
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  Result {counterexample = #counterexample r, evaluation_terms = #evaluation_terms r,
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    timings = cons timing (#timings r), reports = #reports r}
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fun cons_report size (SOME report) (Result r) =
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  Result {counterexample = #counterexample r, evaluation_terms = #evaluation_terms r,
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    timings = #timings r, reports = cons (size, report) (#reports r)}
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  | cons_report _ NONE result = result
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fun add_timing timing result_ref = (result_ref := cons_timing timing (!result_ref))
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fun add_report size report result_ref = (result_ref := cons_report size report (!result_ref))
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fun add_response names eval_terms response result_ref =
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  (result_ref := set_reponse names eval_terms response (!result_ref))
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(* expectation *)
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datatype expectation = No_Expectation | No_Counterexample | Counterexample;
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fun merge_expectation (expect1, expect2) =
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  if expect1 = expect2 then expect1 else No_Expectation
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(* quickcheck configuration -- default parameters, test generators *)
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val (tester, setup_tester) = Attrib.config_string "quickcheck_tester" (K "")
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val (size, setup_size) = Attrib.config_int "quickcheck_size" (K 10)
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val (iterations, setup_iterations) = Attrib.config_int "quickcheck_iterations" (K 100)
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val (no_assms, setup_no_assms) = Attrib.config_bool "quickcheck_no_assms" (K false)
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val (report, setup_report) = Attrib.config_bool "quickcheck_report" (K true)
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val (timing, setup_timing) = Attrib.config_bool "quickcheck_timing" (K false)
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val (quiet, setup_quiet) = Attrib.config_bool "quickcheck_quiet" (K false)
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val (timeout, setup_timeout) = Attrib.config_real "quickcheck_timeout" (K 30.0)
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val (finite_types, setup_finite_types) = Attrib.config_bool "quickcheck_finite_types" (K true)
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val (finite_type_size, setup_finite_type_size) =
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  Attrib.config_int "quickcheck_finite_type_size" (K 3)
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val setup_config =
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  setup_tester #> setup_size #> setup_iterations #> setup_no_assms #> setup_report #> setup_timing
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    #> setup_quiet #> setup_timeout #> setup_finite_types #> setup_finite_type_size
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datatype test_params = Test_Params of
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  {default_type: typ list, expect : expectation};
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fun dest_test_params (Test_Params {default_type, expect}) = (default_type, expect);
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fun make_test_params (default_type, expect) =
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  Test_Params {default_type = default_type, expect = expect};
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fun map_test_params' f (Test_Params {default_type, expect}) =
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  make_test_params (f (default_type, expect));
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fun merge_test_params
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  (Test_Params {default_type = default_type1, expect = expect1},
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    Test_Params {default_type = default_type2, expect = expect2}) =
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  make_test_params
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    (merge (op =) (default_type1, default_type2), merge_expectation (expect1, expect2));
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structure Data = Generic_Data
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(
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  type T =
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    ((string * (Proof.context -> term * term list -> int -> term list option * report option)) list
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      * (string * (Proof.context -> term list -> (int -> term list option) list)) list)
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      * test_params;
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  val empty = (([], []), Test_Params {default_type = [], expect = No_Expectation});
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  val extend = I;
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  fun merge (((generators1, batch_generators1), params1), ((generators2, batch_generators2), params2)) : T =
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    ((AList.merge (op =) (K true) (generators1, generators2),
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    AList.merge (op =) (K true) (batch_generators1, batch_generators2)),
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      merge_test_params (params1, params2));
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);
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val test_params_of = snd o Data.get o Context.Proof;
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val default_type = fst o dest_test_params o test_params_of
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val expect = snd o dest_test_params o test_params_of
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val map_test_params = Data.map o apsnd o map_test_params'
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val add_generator = Data.map o apfst o apfst o AList.update (op =);
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val add_batch_generator = Data.map o apfst o apsnd o AList.update (op =);
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(* generating tests *)
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fun gen_mk_tester lookup ctxt v =
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  let
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    val name = Config.get ctxt tester
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    val tester = case lookup ctxt name
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      of NONE => error ("No such quickcheck tester: " ^ name)
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      | SOME tester => tester ctxt;
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  in
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    if Config.get ctxt quiet then
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      try tester v
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    else
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      let
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        val tester = Exn.interruptible_capture tester v
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      in case Exn.get_result tester of
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          NONE => SOME (Exn.release tester)
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        | SOME tester => SOME tester
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      end
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  end
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val mk_tester = gen_mk_tester (fn ctxt =>
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  AList.lookup (op =) ((fst o fst o Data.get o Context.Proof) ctxt))
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val mk_batch_tester = gen_mk_tester (fn ctxt => AList.lookup (op =) ((snd o fst o Data.get o Context.Proof) ctxt))
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(* testing propositions *)
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fun check_test_term t =
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  let
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    val _ = (null (Term.add_tvars t []) andalso null (Term.add_tfrees t [])) orelse
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      error "Term to be tested contains type variables";
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    val _ = null (Term.add_vars t []) orelse
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      error "Term to be tested contains schematic variables";
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  in () end
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fun cpu_time description e =
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  let val ({cpu, ...}, result) = Timing.timing e ()
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  in (result, (description, Time.toMilliseconds cpu)) end
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fun limit ctxt (limit_time, is_interactive) f exc () =
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  if limit_time then
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      TimeLimit.timeLimit (seconds (Config.get ctxt timeout)) f ()
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    handle TimeLimit.TimeOut =>
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      if is_interactive then exc () else raise TimeLimit.TimeOut
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  else
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    f ()
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fun test_term ctxt (limit_time, is_interactive) (t, eval_terms) =
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  let
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    fun message s = if Config.get ctxt quiet then () else Output.urgent_message s
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    val _ = check_test_term t
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    val names = Term.add_free_names t []
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    val current_size = Unsynchronized.ref 0
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    val current_result = Unsynchronized.ref empty_result 
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    fun excipit () =
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      "Quickcheck ran out of time while testing at size " ^ string_of_int (!current_size)
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    val (test_fun, comp_time) = cpu_time "quickcheck compilation"
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      (fn () => mk_tester ctxt (t, eval_terms));
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    val _ = add_timing comp_time current_result
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    fun with_size test_fun k =
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      if k > Config.get ctxt size then
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        NONE
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      else
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        let
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          val _ = message ("Test data size: " ^ string_of_int k)
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          val _ = current_size := k
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          val ((result, report), timing) =
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            cpu_time ("size " ^ string_of_int k) (fn () => test_fun (k - 1))
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          val _ = add_timing timing current_result
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          val _ = add_report k report current_result
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        in
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          case result of NONE => with_size test_fun (k + 1) | SOME q => SOME q
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        end;
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  in
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    case test_fun of NONE => !current_result
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      | SOME test_fun =>
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        limit ctxt (limit_time, is_interactive) (fn () =>
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          let
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            val (response, exec_time) =
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              cpu_time "quickcheck execution" (fn () => with_size test_fun 1)
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            val _ = add_response names eval_terms response current_result
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            val _ = add_timing exec_time current_result
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          in
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            !current_result
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          end) (fn () => (message (excipit ()); !current_result)) ()
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  end;
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fun test_terms ctxt ts =
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  let
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    val _ = map check_test_term ts
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    val namess = map (fn t => Term.add_free_names t []) ts
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    val test_funs = mk_batch_tester ctxt ts
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    fun with_size tester k =
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      if k > Config.get ctxt size then NONE
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      else case tester k of SOME ts => SOME ts | NONE => with_size tester (k + 1)
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    val results =
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      Option.map (map (fn test_fun => TimeLimit.timeLimit (seconds (Config.get ctxt timeout))
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            (fn () => with_size test_fun 1)  ()
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           handle TimeLimit.TimeOut => NONE)) test_funs
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  in
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    Option.map (map2 (fn names => Option.map (fn ts => names ~~ ts)) namess) results
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  end
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(* FIXME: this function shows that many assumptions are made upon the generation *)
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(* In the end there is probably no generic quickcheck interface left... *)
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fun test_term_with_increasing_cardinality ctxt (limit_time, is_interactive) ts =
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  let
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    val thy = ProofContext.theory_of ctxt
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    fun message s = if Config.get ctxt quiet then () else Output.urgent_message s
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    val (ts, eval_terms) = split_list ts
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    val _ = map check_test_term ts
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    val names = Term.add_free_names (hd ts) []
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    val Ts = map snd (Term.add_frees (hd ts) [])
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    val current_result = Unsynchronized.ref empty_result 
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    val (test_funs, comp_time) = cpu_time "quickcheck compilation"
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      (fn () => map (mk_tester ctxt) (ts ~~ eval_terms))
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    val _ = add_timing comp_time current_result
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    fun test_card_size (card, size) =
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      (* FIXME: why decrement size by one? *)
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      let
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        val (ts, timing) = cpu_time ("size " ^ string_of_int size ^ " and card " ^ string_of_int card)
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          (fn () => fst (the (nth test_funs (card - 1)) (size - 1)))
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        val _ = add_timing timing current_result
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      in
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        Option.map (pair card) ts
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      end
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    val enumeration_card_size =
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      if forall (fn T => Sign.of_sort thy (T,  ["Enum.enum"])) Ts then
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        (* size does not matter *)
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        map (rpair 0) (1 upto (length ts))
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      else
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        (* size does matter *)
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        map_product pair (1 upto (length ts)) (1 upto (Config.get ctxt size))
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        |> sort (fn ((c1, s1), (c2, s2)) => int_ord ((c1 + s1), (c2 + s2)))
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    in
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      if (forall is_none test_funs) then !current_result
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      else if (forall is_some test_funs) then
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        limit ctxt (limit_time, is_interactive) (fn () =>
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          let
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            val _ = case get_first test_card_size enumeration_card_size of
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              SOME (card, ts) => add_response names (nth eval_terms (card - 1)) (SOME ts) current_result
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            | NONE => ()
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          in !current_result end)
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          (fn () => (message "Quickcheck ran out of time"; !current_result)) ()
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      else
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        error "Unexpectedly, testers of some cardinalities are executable but others are not"
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    end
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fun get_finite_types ctxt =
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  fst (chop (Config.get ctxt finite_type_size)
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    (map (Type o rpair []) ["Enum.finite_1", "Enum.finite_2", "Enum.finite_3",
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     "Enum.finite_4", "Enum.finite_5"]))
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exception WELLSORTED of string
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fun monomorphic_term thy insts default_T =
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  let
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    fun subst (T as TFree (v, S)) =
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      let
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        val T' = AList.lookup (op =) insts v
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          |> the_default default_T
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      in if Sign.of_sort thy (T', S) then T'
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        else raise (WELLSORTED ("For instantiation with default_type " ^
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          Syntax.string_of_typ_global thy default_T ^
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          ":\n" ^ Syntax.string_of_typ_global thy T' ^
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          " to be substituted for variable " ^
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          Syntax.string_of_typ_global thy T ^ " does not have sort " ^
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          Syntax.string_of_sort_global thy S))
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      end
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      | subst T = T;
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  in (map_types o map_atyps) subst end;
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datatype wellsorted_error = Wellsorted_Error of string | Term of term * term list
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fun test_goal_terms lthy (limit_time, is_interactive) insts check_goals =
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  let
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    fun map_goal_and_eval_terms f (check_goal, eval_terms) = (f check_goal, map f eval_terms)
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    val thy = ProofContext.theory_of lthy
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    val default_insts =
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      if Config.get lthy finite_types then (get_finite_types lthy) else (default_type lthy)
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    val inst_goals =
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      map (fn (check_goal, eval_terms) =>
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        if not (null (Term.add_tfree_names check_goal [])) then
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          map (fn T =>
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            (pair (SOME T) o Term o apfst (Object_Logic.atomize_term thy))
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              (map_goal_and_eval_terms (monomorphic_term thy insts T) (check_goal, eval_terms))
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              handle WELLSORTED s => (SOME T, Wellsorted_Error s)) default_insts
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        else
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          [(NONE, Term (Object_Logic.atomize_term thy check_goal, eval_terms))]) check_goals
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    val error_msg =
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      cat_lines
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        (maps (map_filter (fn (_, Term t) => NONE | (_, Wellsorted_Error s) => SOME s)) inst_goals)
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    fun is_wellsorted_term (T, Term t) = SOME (T, t)
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      | is_wellsorted_term (_, Wellsorted_Error s) = NONE
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    val correct_inst_goals =
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      case map (map_filter is_wellsorted_term) inst_goals of
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        [[]] => error error_msg
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      | xs => xs
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    val _ = if Config.get lthy quiet then () else warning error_msg
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    fun collect_results f [] results = results
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      | collect_results f (t :: ts) results =
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        let
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          val result = f t
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        in
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          if found_counterexample result then
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            (result :: results)
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          else
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            collect_results f ts (result :: results)
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        end
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    fun test_term' goal =
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      case goal of
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   395
        [(NONE, t)] => test_term lthy (limit_time, is_interactive) t
aa94a003dcdf quickcheck can be invoked with its internal timelimit or without
bulwahn
parents: 41753
diff changeset
   396
      | ts => test_term_with_increasing_cardinality lthy (limit_time, is_interactive) (map snd ts)
41043
3750bdac1327 testing smartly in two dimensions (cardinality and size) in quickcheck
bulwahn
parents: 40931
diff changeset
   397
  in
3750bdac1327 testing smartly in two dimensions (cardinality and size) in quickcheck
bulwahn
parents: 40931
diff changeset
   398
    if Config.get lthy finite_types then
42088
8d00484551fe making quickcheck's result value more formal; allowing more result information to be returned after timeout; adding output of timing information in quickcheck
bulwahn
parents: 42087
diff changeset
   399
      collect_results test_term' correct_inst_goals []
41043
3750bdac1327 testing smartly in two dimensions (cardinality and size) in quickcheck
bulwahn
parents: 40931
diff changeset
   400
    else
42088
8d00484551fe making quickcheck's result value more formal; allowing more result information to be returned after timeout; adding output of timing information in quickcheck
bulwahn
parents: 42087
diff changeset
   401
      collect_results (test_term lthy (limit_time, is_interactive)) (maps (map snd) correct_inst_goals) []
41043
3750bdac1327 testing smartly in two dimensions (cardinality and size) in quickcheck
bulwahn
parents: 40931
diff changeset
   402
  end;
37912
247042107f93 using multiple default types in quickcheck
bulwahn
parents: 37911
diff changeset
   403
42026
da9b58f1db42 adding option of evaluating terms after invocation in quickcheck
bulwahn
parents: 42025
diff changeset
   404
fun test_goal (time_limit, is_interactive) (insts, eval_terms) i state =
40648
1598ec648b0d splitting test_goal function in two functions; exporting new configurations in quickcheck; iterations depend on generator_name in quickcheck
bulwahn
parents: 40647
diff changeset
   405
  let
1598ec648b0d splitting test_goal function in two functions; exporting new configurations in quickcheck; iterations depend on generator_name in quickcheck
bulwahn
parents: 40647
diff changeset
   406
    val lthy = Proof.context_of state;
1598ec648b0d splitting test_goal function in two functions; exporting new configurations in quickcheck; iterations depend on generator_name in quickcheck
bulwahn
parents: 40647
diff changeset
   407
    val thy = Proof.theory_of state;
1598ec648b0d splitting test_goal function in two functions; exporting new configurations in quickcheck; iterations depend on generator_name in quickcheck
bulwahn
parents: 40647
diff changeset
   408
    fun strip (Const ("all", _) $ Abs (_, _, t)) = strip t
1598ec648b0d splitting test_goal function in two functions; exporting new configurations in quickcheck; iterations depend on generator_name in quickcheck
bulwahn
parents: 40647
diff changeset
   409
      | strip t = t;
1598ec648b0d splitting test_goal function in two functions; exporting new configurations in quickcheck; iterations depend on generator_name in quickcheck
bulwahn
parents: 40647
diff changeset
   410
    val {goal = st, ...} = Proof.raw_goal state;
1598ec648b0d splitting test_goal function in two functions; exporting new configurations in quickcheck; iterations depend on generator_name in quickcheck
bulwahn
parents: 40647
diff changeset
   411
    val (gi, frees) = Logic.goal_params (prop_of st) i;
1598ec648b0d splitting test_goal function in two functions; exporting new configurations in quickcheck; iterations depend on generator_name in quickcheck
bulwahn
parents: 40647
diff changeset
   412
    val some_locale = case (Option.map #target o Named_Target.peek) lthy
1598ec648b0d splitting test_goal function in two functions; exporting new configurations in quickcheck; iterations depend on generator_name in quickcheck
bulwahn
parents: 40647
diff changeset
   413
     of NONE => NONE
1598ec648b0d splitting test_goal function in two functions; exporting new configurations in quickcheck; iterations depend on generator_name in quickcheck
bulwahn
parents: 40647
diff changeset
   414
      | SOME "" => NONE
1598ec648b0d splitting test_goal function in two functions; exporting new configurations in quickcheck; iterations depend on generator_name in quickcheck
bulwahn
parents: 40647
diff changeset
   415
      | SOME locale => SOME locale;
1598ec648b0d splitting test_goal function in two functions; exporting new configurations in quickcheck; iterations depend on generator_name in quickcheck
bulwahn
parents: 40647
diff changeset
   416
    val assms = if Config.get lthy no_assms then [] else case some_locale
1598ec648b0d splitting test_goal function in two functions; exporting new configurations in quickcheck; iterations depend on generator_name in quickcheck
bulwahn
parents: 40647
diff changeset
   417
     of NONE => Assumption.all_assms_of lthy
1598ec648b0d splitting test_goal function in two functions; exporting new configurations in quickcheck; iterations depend on generator_name in quickcheck
bulwahn
parents: 40647
diff changeset
   418
      | SOME locale => Assumption.local_assms_of lthy (Locale.init locale thy);
1598ec648b0d splitting test_goal function in two functions; exporting new configurations in quickcheck; iterations depend on generator_name in quickcheck
bulwahn
parents: 40647
diff changeset
   419
    val proto_goal = Logic.list_implies (map Thm.term_of assms, subst_bounds (frees, strip gi));
1598ec648b0d splitting test_goal function in two functions; exporting new configurations in quickcheck; iterations depend on generator_name in quickcheck
bulwahn
parents: 40647
diff changeset
   420
    val check_goals = case some_locale
42026
da9b58f1db42 adding option of evaluating terms after invocation in quickcheck
bulwahn
parents: 42025
diff changeset
   421
     of NONE => [(proto_goal, eval_terms)]
da9b58f1db42 adding option of evaluating terms after invocation in quickcheck
bulwahn
parents: 42025
diff changeset
   422
      | SOME locale =>
da9b58f1db42 adding option of evaluating terms after invocation in quickcheck
bulwahn
parents: 42025
diff changeset
   423
        map (fn (_, phi) => (Morphism.term phi proto_goal, map (Morphism.term phi) eval_terms))
da9b58f1db42 adding option of evaluating terms after invocation in quickcheck
bulwahn
parents: 42025
diff changeset
   424
          (Locale.registrations_of (Context.Theory thy) (*FIXME*) locale);
40648
1598ec648b0d splitting test_goal function in two functions; exporting new configurations in quickcheck; iterations depend on generator_name in quickcheck
bulwahn
parents: 40647
diff changeset
   425
  in
41754
aa94a003dcdf quickcheck can be invoked with its internal timelimit or without
bulwahn
parents: 41753
diff changeset
   426
    test_goal_terms lthy (time_limit, is_interactive) insts check_goals
40648
1598ec648b0d splitting test_goal function in two functions; exporting new configurations in quickcheck; iterations depend on generator_name in quickcheck
bulwahn
parents: 40647
diff changeset
   427
  end
1598ec648b0d splitting test_goal function in two functions; exporting new configurations in quickcheck; iterations depend on generator_name in quickcheck
bulwahn
parents: 40647
diff changeset
   428
37912
247042107f93 using multiple default types in quickcheck
bulwahn
parents: 37911
diff changeset
   429
(* pretty printing *)
28315
d3cf88fe77bc generic quickcheck framework
haftmann
parents: 28309
diff changeset
   430
40225
2de5dd0cd3a2 clear identification
blanchet
parents: 40148
diff changeset
   431
fun tool_name auto = (if auto then "Auto " else "") ^ "Quickcheck"
2de5dd0cd3a2 clear identification
blanchet
parents: 40148
diff changeset
   432
2de5dd0cd3a2 clear identification
blanchet
parents: 40148
diff changeset
   433
fun pretty_counterex ctxt auto NONE = Pretty.str (tool_name auto ^ " found no counterexample.")
42028
bd6515e113b2 passing a term with free variables to the quickcheck tester functions instead of an lambda expression because this is more natural with passing further evaluation terms; added output of evaluation terms; added evaluation of terms in the exhaustive testing
bulwahn
parents: 42026
diff changeset
   434
  | pretty_counterex ctxt auto (SOME (cex, eval_terms)) =
bd6515e113b2 passing a term with free variables to the quickcheck tester functions instead of an lambda expression because this is more natural with passing further evaluation terms; added output of evaluation terms; added evaluation of terms in the exhaustive testing
bulwahn
parents: 42026
diff changeset
   435
      Pretty.chunks ((Pretty.str (tool_name auto ^ " found a counterexample:\n") ::
28315
d3cf88fe77bc generic quickcheck framework
haftmann
parents: 28309
diff changeset
   436
        map (fn (s, t) =>
42028
bd6515e113b2 passing a term with free variables to the quickcheck tester functions instead of an lambda expression because this is more natural with passing further evaluation terms; added output of evaluation terms; added evaluation of terms in the exhaustive testing
bulwahn
parents: 42026
diff changeset
   437
          Pretty.block [Pretty.str (s ^ " ="), Pretty.brk 1, Syntax.pretty_term ctxt t]) (rev cex))
bd6515e113b2 passing a term with free variables to the quickcheck tester functions instead of an lambda expression because this is more natural with passing further evaluation terms; added output of evaluation terms; added evaluation of terms in the exhaustive testing
bulwahn
parents: 42026
diff changeset
   438
        @ (Pretty.str ("Evaluated terms:\n") ::
bd6515e113b2 passing a term with free variables to the quickcheck tester functions instead of an lambda expression because this is more natural with passing further evaluation terms; added output of evaluation terms; added evaluation of terms in the exhaustive testing
bulwahn
parents: 42026
diff changeset
   439
        map (fn (t, u) =>
bd6515e113b2 passing a term with free variables to the quickcheck tester functions instead of an lambda expression because this is more natural with passing further evaluation terms; added output of evaluation terms; added evaluation of terms in the exhaustive testing
bulwahn
parents: 42026
diff changeset
   440
          Pretty.block [Syntax.pretty_term ctxt t, Pretty.str " =", Pretty.brk 1, Syntax.pretty_term ctxt u])
bd6515e113b2 passing a term with free variables to the quickcheck tester functions instead of an lambda expression because this is more natural with passing further evaluation terms; added output of evaluation terms; added evaluation of terms in the exhaustive testing
bulwahn
parents: 42026
diff changeset
   441
          (rev eval_terms)));
28315
d3cf88fe77bc generic quickcheck framework
haftmann
parents: 28309
diff changeset
   442
35378
95d0e3adf38e added basic reporting of test cases to quickcheck
bulwahn
parents: 35324
diff changeset
   443
fun pretty_report (Report {iterations = iterations, raised_match_errors = raised_match_errors,
95d0e3adf38e added basic reporting of test cases to quickcheck
bulwahn
parents: 35324
diff changeset
   444
    satisfied_assms = satisfied_assms, positive_concl_tests = positive_concl_tests}) =
95d0e3adf38e added basic reporting of test cases to quickcheck
bulwahn
parents: 35324
diff changeset
   445
  let
95d0e3adf38e added basic reporting of test cases to quickcheck
bulwahn
parents: 35324
diff changeset
   446
    fun pretty_stat s i = Pretty.block ([Pretty.str (s ^ ": " ^ string_of_int i)])
95d0e3adf38e added basic reporting of test cases to quickcheck
bulwahn
parents: 35324
diff changeset
   447
  in
95d0e3adf38e added basic reporting of test cases to quickcheck
bulwahn
parents: 35324
diff changeset
   448
     ([pretty_stat "iterations" iterations,
95d0e3adf38e added basic reporting of test cases to quickcheck
bulwahn
parents: 35324
diff changeset
   449
     pretty_stat "match exceptions" raised_match_errors]
41517
7267fb5b724b observe line length limit;
wenzelm
parents: 41472
diff changeset
   450
     @ map_index
7267fb5b724b observe line length limit;
wenzelm
parents: 41472
diff changeset
   451
       (fn (i, n) => pretty_stat ("satisfied " ^ string_of_int (i + 1) ^ ". assumption") n)
35378
95d0e3adf38e added basic reporting of test cases to quickcheck
bulwahn
parents: 35324
diff changeset
   452
       satisfied_assms
95d0e3adf38e added basic reporting of test cases to quickcheck
bulwahn
parents: 35324
diff changeset
   453
     @ [pretty_stat "positive conclusion tests" positive_concl_tests])
95d0e3adf38e added basic reporting of test cases to quickcheck
bulwahn
parents: 35324
diff changeset
   454
  end
95d0e3adf38e added basic reporting of test cases to quickcheck
bulwahn
parents: 35324
diff changeset
   455
35380
6ac5b81a763d adopting Mutabelle to quickcheck reporting; improving quickcheck reporting
bulwahn
parents: 35379
diff changeset
   456
fun pretty_reports ctxt (SOME reports) =
40916
9928083506b6 improving presentation of quickcheck reports
bulwahn
parents: 40912
diff changeset
   457
  Pretty.chunks (Pretty.fbrk :: Pretty.str "Quickcheck report:" ::
40909
e006d1e06920 renamed parameter from generator to tester; quickcheck only applies one tester on invocation
bulwahn
parents: 40908
diff changeset
   458
    maps (fn (size, report) =>
e006d1e06920 renamed parameter from generator to tester; quickcheck only applies one tester on invocation
bulwahn
parents: 40908
diff changeset
   459
      Pretty.str ("size " ^ string_of_int size ^ ":") :: pretty_report report @ [Pretty.brk 1])
35378
95d0e3adf38e added basic reporting of test cases to quickcheck
bulwahn
parents: 35324
diff changeset
   460
      (rev reports))
35380
6ac5b81a763d adopting Mutabelle to quickcheck reporting; improving quickcheck reporting
bulwahn
parents: 35379
diff changeset
   461
  | pretty_reports ctxt NONE = Pretty.str ""
35378
95d0e3adf38e added basic reporting of test cases to quickcheck
bulwahn
parents: 35324
diff changeset
   462
42088
8d00484551fe making quickcheck's result value more formal; allowing more result information to be returned after timeout; adding output of timing information in quickcheck
bulwahn
parents: 42087
diff changeset
   463
fun pretty_timings timings =
8d00484551fe making quickcheck's result value more formal; allowing more result information to be returned after timeout; adding output of timing information in quickcheck
bulwahn
parents: 42087
diff changeset
   464
  Pretty.chunks (Pretty.fbrk :: Pretty.str "timings:" ::
8d00484551fe making quickcheck's result value more formal; allowing more result information to be returned after timeout; adding output of timing information in quickcheck
bulwahn
parents: 42087
diff changeset
   465
    maps (fn (label, time) =>
8d00484551fe making quickcheck's result value more formal; allowing more result information to be returned after timeout; adding output of timing information in quickcheck
bulwahn
parents: 42087
diff changeset
   466
      Pretty.str (label ^ ": " ^ string_of_int time ^ " ms") :: Pretty.brk 1 :: []) (rev timings))
8d00484551fe making quickcheck's result value more formal; allowing more result information to be returned after timeout; adding output of timing information in quickcheck
bulwahn
parents: 42087
diff changeset
   467
8d00484551fe making quickcheck's result value more formal; allowing more result information to be returned after timeout; adding output of timing information in quickcheck
bulwahn
parents: 42087
diff changeset
   468
fun pretty_counterex_and_reports ctxt auto (result :: _) =
8d00484551fe making quickcheck's result value more formal; allowing more result information to be returned after timeout; adding output of timing information in quickcheck
bulwahn
parents: 42087
diff changeset
   469
  Pretty.chunks (pretty_counterex ctxt auto (response_of result) ::
8d00484551fe making quickcheck's result value more formal; allowing more result information to be returned after timeout; adding output of timing information in quickcheck
bulwahn
parents: 42087
diff changeset
   470
    (* map (pretty_reports ctxt) (reports_of result) :: *)
8d00484551fe making quickcheck's result value more formal; allowing more result information to be returned after timeout; adding output of timing information in quickcheck
bulwahn
parents: 42087
diff changeset
   471
    (if Config.get ctxt timing then cons (pretty_timings (timings_of result)) else I) [])
28315
d3cf88fe77bc generic quickcheck framework
haftmann
parents: 28309
diff changeset
   472
d3cf88fe77bc generic quickcheck framework
haftmann
parents: 28309
diff changeset
   473
(* automatic testing *)
28309
c24bc53c815c some steps towards generic quickcheck framework
haftmann
parents: 28256
diff changeset
   474
33561
ab01b72715ef introduced Auto Nitpick in addition to Auto Quickcheck;
blanchet
parents: 33560
diff changeset
   475
fun auto_quickcheck state =
40931
061b8257ab9f run synchronous Auto Tools in parallel
blanchet
parents: 40926
diff changeset
   476
  let
061b8257ab9f run synchronous Auto Tools in parallel
blanchet
parents: 40926
diff changeset
   477
    val ctxt = Proof.context_of state;
061b8257ab9f run synchronous Auto Tools in parallel
blanchet
parents: 40926
diff changeset
   478
    val res =
061b8257ab9f run synchronous Auto Tools in parallel
blanchet
parents: 40926
diff changeset
   479
      state
061b8257ab9f run synchronous Auto Tools in parallel
blanchet
parents: 40926
diff changeset
   480
      |> Proof.map_context (Config.put report false #> Config.put quiet true)
42026
da9b58f1db42 adding option of evaluating terms after invocation in quickcheck
bulwahn
parents: 42025
diff changeset
   481
      |> try (test_goal (false, false) ([], []) 1);
40931
061b8257ab9f run synchronous Auto Tools in parallel
blanchet
parents: 40926
diff changeset
   482
  in
061b8257ab9f run synchronous Auto Tools in parallel
blanchet
parents: 40926
diff changeset
   483
    case res of
061b8257ab9f run synchronous Auto Tools in parallel
blanchet
parents: 40926
diff changeset
   484
      NONE => (false, state)
42088
8d00484551fe making quickcheck's result value more formal; allowing more result information to be returned after timeout; adding output of timing information in quickcheck
bulwahn
parents: 42087
diff changeset
   485
    | SOME (result :: _) => if found_counterexample result then
8d00484551fe making quickcheck's result value more formal; allowing more result information to be returned after timeout; adding output of timing information in quickcheck
bulwahn
parents: 42087
diff changeset
   486
        (true, Proof.goal_message (K (Pretty.chunks [Pretty.str "",
8d00484551fe making quickcheck's result value more formal; allowing more result information to be returned after timeout; adding output of timing information in quickcheck
bulwahn
parents: 42087
diff changeset
   487
          Pretty.mark Markup.hilite (pretty_counterex ctxt true (response_of result))])) state)
8d00484551fe making quickcheck's result value more formal; allowing more result information to be returned after timeout; adding output of timing information in quickcheck
bulwahn
parents: 42087
diff changeset
   488
      else
8d00484551fe making quickcheck's result value more formal; allowing more result information to be returned after timeout; adding output of timing information in quickcheck
bulwahn
parents: 42087
diff changeset
   489
        (false, state)
40931
061b8257ab9f run synchronous Auto Tools in parallel
blanchet
parents: 40926
diff changeset
   490
  end
33561
ab01b72715ef introduced Auto Nitpick in addition to Auto Quickcheck;
blanchet
parents: 33560
diff changeset
   491
40931
061b8257ab9f run synchronous Auto Tools in parallel
blanchet
parents: 40926
diff changeset
   492
val setup = Auto_Tools.register_tool (auto, auto_quickcheck)
40644
0850a2a16dce changed old-style quickcheck configurations to new Config.T configurations
bulwahn
parents: 40643
diff changeset
   493
  #> setup_config
28315
d3cf88fe77bc generic quickcheck framework
haftmann
parents: 28309
diff changeset
   494
30980
fe0855471964 misc cleanup of auto_solve and quickcheck:
wenzelm
parents: 30973
diff changeset
   495
(* Isar commands *)
28315
d3cf88fe77bc generic quickcheck framework
haftmann
parents: 28309
diff changeset
   496
28336
a8edf4c69a79 fixed quickcheck parameter syntax
haftmann
parents: 28315
diff changeset
   497
fun read_nat s = case (Library.read_int o Symbol.explode) s
a8edf4c69a79 fixed quickcheck parameter syntax
haftmann
parents: 28315
diff changeset
   498
 of (k, []) => if k >= 0 then k
a8edf4c69a79 fixed quickcheck parameter syntax
haftmann
parents: 28315
diff changeset
   499
      else error ("Not a natural number: " ^ s)
a8edf4c69a79 fixed quickcheck parameter syntax
haftmann
parents: 28315
diff changeset
   500
  | (_, _ :: _) => error ("Not a natural number: " ^ s);
37909
583543ad6ad1 changed default types to a list of types; extended quickcheck parameters to be a list of values to parse a list of default types
bulwahn
parents: 36960
diff changeset
   501
34128
8650a073dd9b made Quickcheck take structured proof assumptions into account (like Refute and Nitpick) by default;
blanchet
parents: 33583
diff changeset
   502
fun read_bool "false" = false
8650a073dd9b made Quickcheck take structured proof assumptions into account (like Refute and Nitpick) by default;
blanchet
parents: 33583
diff changeset
   503
  | read_bool "true" = true
8650a073dd9b made Quickcheck take structured proof assumptions into account (like Refute and Nitpick) by default;
blanchet
parents: 33583
diff changeset
   504
  | read_bool s = error ("Not a Boolean value: " ^ s)
28315
d3cf88fe77bc generic quickcheck framework
haftmann
parents: 28309
diff changeset
   505
40366
a2866dbfbe6b changing timeout to real value; handling Interrupt and Timeout more like nitpick does
bulwahn
parents: 40253
diff changeset
   506
fun read_real s =
a2866dbfbe6b changing timeout to real value; handling Interrupt and Timeout more like nitpick does
bulwahn
parents: 40253
diff changeset
   507
  case (Real.fromString s) of
a2866dbfbe6b changing timeout to real value; handling Interrupt and Timeout more like nitpick does
bulwahn
parents: 40253
diff changeset
   508
    SOME s => s
a2866dbfbe6b changing timeout to real value; handling Interrupt and Timeout more like nitpick does
bulwahn
parents: 40253
diff changeset
   509
  | NONE => error ("Not a real number: " ^ s)
a2866dbfbe6b changing timeout to real value; handling Interrupt and Timeout more like nitpick does
bulwahn
parents: 40253
diff changeset
   510
37929
22e0797857e6 adding checking of expected result for the tool quickcheck; annotated a few quickcheck examples
bulwahn
parents: 37913
diff changeset
   511
fun read_expectation "no_expectation" = No_Expectation
41517
7267fb5b724b observe line length limit;
wenzelm
parents: 41472
diff changeset
   512
  | read_expectation "no_counterexample" = No_Counterexample
37929
22e0797857e6 adding checking of expected result for the tool quickcheck; annotated a few quickcheck examples
bulwahn
parents: 37913
diff changeset
   513
  | read_expectation "counterexample" = Counterexample
41517
7267fb5b724b observe line length limit;
wenzelm
parents: 41472
diff changeset
   514
  | read_expectation s = error ("Not an expectation value: " ^ s)
37929
22e0797857e6 adding checking of expected result for the tool quickcheck; annotated a few quickcheck examples
bulwahn
parents: 37913
diff changeset
   515
41862
a38536bf2736 adding function Quickcheck.test_terms to provide checking a batch of terms
bulwahn
parents: 41754
diff changeset
   516
fun valid_tester_name genctxt = AList.defined (op =) (fst (fst (Data.get genctxt)))
40912
1108529100ce checking if parameter is name of a tester which allows e.g. quickcheck[random]
bulwahn
parents: 40911
diff changeset
   517
1108529100ce checking if parameter is name of a tester which allows e.g. quickcheck[random]
bulwahn
parents: 40911
diff changeset
   518
fun parse_tester name genctxt =
1108529100ce checking if parameter is name of a tester which allows e.g. quickcheck[random]
bulwahn
parents: 40911
diff changeset
   519
  if valid_tester_name genctxt name then
1108529100ce checking if parameter is name of a tester which allows e.g. quickcheck[random]
bulwahn
parents: 40911
diff changeset
   520
    Config.put_generic tester name genctxt
1108529100ce checking if parameter is name of a tester which allows e.g. quickcheck[random]
bulwahn
parents: 40911
diff changeset
   521
  else
1108529100ce checking if parameter is name of a tester which allows e.g. quickcheck[random]
bulwahn
parents: 40911
diff changeset
   522
    error ("Unknown tester: " ^ name)
1108529100ce checking if parameter is name of a tester which allows e.g. quickcheck[random]
bulwahn
parents: 40911
diff changeset
   523
1108529100ce checking if parameter is name of a tester which allows e.g. quickcheck[random]
bulwahn
parents: 40911
diff changeset
   524
fun parse_test_param ("tester", [arg]) = parse_tester arg
40909
e006d1e06920 renamed parameter from generator to tester; quickcheck only applies one tester on invocation
bulwahn
parents: 40908
diff changeset
   525
  | parse_test_param ("size", [arg]) = Config.put_generic size (read_nat arg)
40644
0850a2a16dce changed old-style quickcheck configurations to new Config.T configurations
bulwahn
parents: 40643
diff changeset
   526
  | parse_test_param ("iterations", [arg]) = Config.put_generic iterations (read_nat arg)
0850a2a16dce changed old-style quickcheck configurations to new Config.T configurations
bulwahn
parents: 40643
diff changeset
   527
  | parse_test_param ("default_type", arg) = (fn gen_ctxt =>
41517
7267fb5b724b observe line length limit;
wenzelm
parents: 41472
diff changeset
   528
    map_test_params
7267fb5b724b observe line length limit;
wenzelm
parents: 41472
diff changeset
   529
      ((apfst o K) (map (ProofContext.read_typ (Context.proof_of gen_ctxt)) arg)) gen_ctxt)
40644
0850a2a16dce changed old-style quickcheck configurations to new Config.T configurations
bulwahn
parents: 40643
diff changeset
   530
  | parse_test_param ("no_assms", [arg]) = Config.put_generic no_assms (read_bool arg)
0850a2a16dce changed old-style quickcheck configurations to new Config.T configurations
bulwahn
parents: 40643
diff changeset
   531
  | parse_test_param ("expect", [arg]) = map_test_params ((apsnd o K) (read_expectation arg))
0850a2a16dce changed old-style quickcheck configurations to new Config.T configurations
bulwahn
parents: 40643
diff changeset
   532
  | parse_test_param ("report", [arg]) = Config.put_generic report (read_bool arg)
0850a2a16dce changed old-style quickcheck configurations to new Config.T configurations
bulwahn
parents: 40643
diff changeset
   533
  | parse_test_param ("quiet", [arg]) = Config.put_generic quiet (read_bool arg)
0850a2a16dce changed old-style quickcheck configurations to new Config.T configurations
bulwahn
parents: 40643
diff changeset
   534
  | parse_test_param ("timeout", [arg]) = Config.put_generic timeout (read_real arg)
40646
3dfa41e89738 adding option finite_types to quickcheck
bulwahn
parents: 40644
diff changeset
   535
  | parse_test_param ("finite_types", [arg]) = Config.put_generic finite_types (read_bool arg)
41517
7267fb5b724b observe line length limit;
wenzelm
parents: 41472
diff changeset
   536
  | parse_test_param ("finite_type_size", [arg]) =
7267fb5b724b observe line length limit;
wenzelm
parents: 41472
diff changeset
   537
    Config.put_generic finite_type_size (read_nat arg)
40912
1108529100ce checking if parameter is name of a tester which allows e.g. quickcheck[random]
bulwahn
parents: 40911
diff changeset
   538
  | parse_test_param (name, _) = fn genctxt =>
1108529100ce checking if parameter is name of a tester which allows e.g. quickcheck[random]
bulwahn
parents: 40911
diff changeset
   539
    if valid_tester_name genctxt name then
1108529100ce checking if parameter is name of a tester which allows e.g. quickcheck[random]
bulwahn
parents: 40911
diff changeset
   540
      Config.put_generic tester name genctxt
1108529100ce checking if parameter is name of a tester which allows e.g. quickcheck[random]
bulwahn
parents: 40911
diff changeset
   541
    else error ("Unknown tester or test parameter: " ^ name);
28315
d3cf88fe77bc generic quickcheck framework
haftmann
parents: 28309
diff changeset
   542
42025
cb5b1e85b32e adding eval option to quickcheck
bulwahn
parents: 41862
diff changeset
   543
fun parse_test_param_inst (name, arg) ((insts, eval_terms), ctxt) =
28336
a8edf4c69a79 fixed quickcheck parameter syntax
haftmann
parents: 28315
diff changeset
   544
      case try (ProofContext.read_typ ctxt) name
42025
cb5b1e85b32e adding eval option to quickcheck
bulwahn
parents: 41862
diff changeset
   545
       of SOME (TFree (v, _)) =>
cb5b1e85b32e adding eval option to quickcheck
bulwahn
parents: 41862
diff changeset
   546
         ((AList.update (op =) (v, ProofContext.read_typ ctxt (the_single arg)) insts, eval_terms), ctxt)
cb5b1e85b32e adding eval option to quickcheck
bulwahn
parents: 41862
diff changeset
   547
        | NONE => (case name of
cb5b1e85b32e adding eval option to quickcheck
bulwahn
parents: 41862
diff changeset
   548
            "eval" => ((insts, eval_terms @ map (Syntax.read_term ctxt) arg), ctxt)
cb5b1e85b32e adding eval option to quickcheck
bulwahn
parents: 41862
diff changeset
   549
          | _ => ((insts, eval_terms), Context.proof_map (parse_test_param (name, arg)) ctxt));
28309
c24bc53c815c some steps towards generic quickcheck framework
haftmann
parents: 28256
diff changeset
   550
40644
0850a2a16dce changed old-style quickcheck configurations to new Config.T configurations
bulwahn
parents: 40643
diff changeset
   551
fun quickcheck_params_cmd args = Context.theory_map (fold parse_test_param args);
41517
7267fb5b724b observe line length limit;
wenzelm
parents: 41472
diff changeset
   552
42088
8d00484551fe making quickcheck's result value more formal; allowing more result information to be returned after timeout; adding output of timing information in quickcheck
bulwahn
parents: 42087
diff changeset
   553
fun check_expectation state results =
8d00484551fe making quickcheck's result value more formal; allowing more result information to be returned after timeout; adding output of timing information in quickcheck
bulwahn
parents: 42087
diff changeset
   554
  (if found_counterexample (hd results) andalso expect (Proof.context_of state) = No_Counterexample
8d00484551fe making quickcheck's result value more formal; allowing more result information to be returned after timeout; adding output of timing information in quickcheck
bulwahn
parents: 42087
diff changeset
   555
  then
8d00484551fe making quickcheck's result value more formal; allowing more result information to be returned after timeout; adding output of timing information in quickcheck
bulwahn
parents: 42087
diff changeset
   556
    error ("quickcheck expected to find no counterexample but found one")
8d00484551fe making quickcheck's result value more formal; allowing more result information to be returned after timeout; adding output of timing information in quickcheck
bulwahn
parents: 42087
diff changeset
   557
  else
8d00484551fe making quickcheck's result value more formal; allowing more result information to be returned after timeout; adding output of timing information in quickcheck
bulwahn
parents: 42087
diff changeset
   558
    (if not (found_counterexample (hd results)) andalso expect (Proof.context_of state) = Counterexample
8d00484551fe making quickcheck's result value more formal; allowing more result information to be returned after timeout; adding output of timing information in quickcheck
bulwahn
parents: 42087
diff changeset
   559
    then
8d00484551fe making quickcheck's result value more formal; allowing more result information to be returned after timeout; adding output of timing information in quickcheck
bulwahn
parents: 42087
diff changeset
   560
      error ("quickcheck expected to find a counterexample but did not find one")
8d00484551fe making quickcheck's result value more formal; allowing more result information to be returned after timeout; adding output of timing information in quickcheck
bulwahn
parents: 42087
diff changeset
   561
    else ()))
8d00484551fe making quickcheck's result value more formal; allowing more result information to be returned after timeout; adding output of timing information in quickcheck
bulwahn
parents: 42087
diff changeset
   562
35378
95d0e3adf38e added basic reporting of test cases to quickcheck
bulwahn
parents: 35324
diff changeset
   563
fun gen_quickcheck args i state =
40644
0850a2a16dce changed old-style quickcheck configurations to new Config.T configurations
bulwahn
parents: 40643
diff changeset
   564
  state
42025
cb5b1e85b32e adding eval option to quickcheck
bulwahn
parents: 41862
diff changeset
   565
  |> Proof.map_context_result (fn ctxt => fold parse_test_param_inst args (([], []), ctxt))
42026
da9b58f1db42 adding option of evaluating terms after invocation in quickcheck
bulwahn
parents: 42025
diff changeset
   566
  |> (fn ((insts, eval_terms), state') => test_goal (true, true) (insts, eval_terms) i state'
42088
8d00484551fe making quickcheck's result value more formal; allowing more result information to be returned after timeout; adding output of timing information in quickcheck
bulwahn
parents: 42087
diff changeset
   567
  |> tap (check_expectation state'))
32297
3a4081abb3f7 Quickcheck callable from ML
boehmes
parents: 31599
diff changeset
   568
42088
8d00484551fe making quickcheck's result value more formal; allowing more result information to be returned after timeout; adding output of timing information in quickcheck
bulwahn
parents: 42087
diff changeset
   569
fun quickcheck args i state = counterexample_of (hd (gen_quickcheck args i state))
35378
95d0e3adf38e added basic reporting of test cases to quickcheck
bulwahn
parents: 35324
diff changeset
   570
32297
3a4081abb3f7 Quickcheck callable from ML
boehmes
parents: 31599
diff changeset
   571
fun quickcheck_cmd args i state =
35378
95d0e3adf38e added basic reporting of test cases to quickcheck
bulwahn
parents: 35324
diff changeset
   572
  gen_quickcheck args i (Toplevel.proof_of state)
40225
2de5dd0cd3a2 clear identification
blanchet
parents: 40148
diff changeset
   573
  |> Pretty.writeln o pretty_counterex_and_reports (Toplevel.context_of state) false;
28309
c24bc53c815c some steps towards generic quickcheck framework
haftmann
parents: 28256
diff changeset
   574
41517
7267fb5b724b observe line length limit;
wenzelm
parents: 41472
diff changeset
   575
val parse_arg =
7267fb5b724b observe line length limit;
wenzelm
parents: 41472
diff changeset
   576
  Parse.name --
7267fb5b724b observe line length limit;
wenzelm
parents: 41472
diff changeset
   577
    (Scan.optional (Parse.$$$ "=" |--
7267fb5b724b observe line length limit;
wenzelm
parents: 41472
diff changeset
   578
      (((Parse.name || Parse.float_number) >> single) ||
7267fb5b724b observe line length limit;
wenzelm
parents: 41472
diff changeset
   579
        (Parse.$$$ "[" |-- Parse.list1 Parse.name --| Parse.$$$ "]"))) ["true"]);
28309
c24bc53c815c some steps towards generic quickcheck framework
haftmann
parents: 28256
diff changeset
   580
41517
7267fb5b724b observe line length limit;
wenzelm
parents: 41472
diff changeset
   581
val parse_args =
7267fb5b724b observe line length limit;
wenzelm
parents: 41472
diff changeset
   582
  Parse.$$$ "[" |-- Parse.list1 parse_arg --| Parse.$$$ "]" || Scan.succeed [];
28336
a8edf4c69a79 fixed quickcheck parameter syntax
haftmann
parents: 28315
diff changeset
   583
36960
01594f816e3a prefer structure Keyword, Parse, Parse_Spec, Outer_Syntax;
wenzelm
parents: 36610
diff changeset
   584
val _ =
01594f816e3a prefer structure Keyword, Parse, Parse_Spec, Outer_Syntax;
wenzelm
parents: 36610
diff changeset
   585
  Outer_Syntax.command "quickcheck_params" "set parameters for random testing" Keyword.thy_decl
01594f816e3a prefer structure Keyword, Parse, Parse_Spec, Outer_Syntax;
wenzelm
parents: 36610
diff changeset
   586
    (parse_args >> (fn args => Toplevel.theory (quickcheck_params_cmd args)));
28309
c24bc53c815c some steps towards generic quickcheck framework
haftmann
parents: 28256
diff changeset
   587
36960
01594f816e3a prefer structure Keyword, Parse, Parse_Spec, Outer_Syntax;
wenzelm
parents: 36610
diff changeset
   588
val _ =
01594f816e3a prefer structure Keyword, Parse, Parse_Spec, Outer_Syntax;
wenzelm
parents: 36610
diff changeset
   589
  Outer_Syntax.improper_command "quickcheck" "try to find counterexample for subgoal" Keyword.diag
01594f816e3a prefer structure Keyword, Parse, Parse_Spec, Outer_Syntax;
wenzelm
parents: 36610
diff changeset
   590
    (parse_args -- Scan.optional Parse.nat 1
01594f816e3a prefer structure Keyword, Parse, Parse_Spec, Outer_Syntax;
wenzelm
parents: 36610
diff changeset
   591
      >> (fn (args, i) => Toplevel.no_timing o Toplevel.keep (quickcheck_cmd args i)));
28309
c24bc53c815c some steps towards generic quickcheck framework
haftmann
parents: 28256
diff changeset
   592
28315
d3cf88fe77bc generic quickcheck framework
haftmann
parents: 28309
diff changeset
   593
end;
28309
c24bc53c815c some steps towards generic quickcheck framework
haftmann
parents: 28256
diff changeset
   594
c24bc53c815c some steps towards generic quickcheck framework
haftmann
parents: 28256
diff changeset
   595
28315
d3cf88fe77bc generic quickcheck framework
haftmann
parents: 28309
diff changeset
   596
val auto_quickcheck = Quickcheck.auto;