lambdaTests.ml 22.8 KB
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open OUnit2
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open Camlp4.PreCast 

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(* Typed -> Lambda *)
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let run_test_compile msg expected totest =
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  let aux str =
    try
      let expr = Parse.ExprParser.of_string_no_file str in
      let env, texpr = Compute.to_typed expr in
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      Format.printf "Computed Typed -> %s%!@." (Printer.typed_to_string texpr);
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      let lambdaexpr = Compile.compile env texpr in
      Printer.lambda_to_string lambdaexpr
    with
      | Compute.Error -> exit 3
      | Loc.Exc_located (loc, exn) ->
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	let l = Loc.start_line loc in
	let cbegin = Loc.start_off loc - Loc.start_bol loc in
	let cend = Loc.stop_off loc - Loc.start_bol loc in
	Printf.eprintf "File %s, line %d, characters %d-%d:\n" (Loc.file_name loc) l
	  cbegin cend; raise exn
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      | e -> Printf.eprintf "Runtime error.\n"; raise e
  in
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  fun _ -> assert_equal ~msg:msg ~printer:(fun x -> x) expected (aux totest)
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let tests_poly_abstr = [
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  "Test CDuce.lambda.const_abstr failed",
  "Abstraction(Dummy,,,,Sel(,(Int -> Int),{}))",
  "fun f x : Int : Int -> 2";
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  "Test CDuce.lambda.poly.identity failed",
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  "Abstraction(Dummy,,,,Sel(,([ Char* ] | Int -> [ Char* ] | Int),Comp({},{ { `$A = 
Int } ,{ `$A = [ Char* ]
 } })))",
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  "(fun f x : 'A : 'A -> x) [{A/Int},{A/String}]";
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  "Test CDuce.runtime.poly.tail failed",
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  "Abstraction(Dummy,,,,Sel(,([ (`$A & Int | Char | Atom | (Any,Any) |
                             <(Any) (Any)>Any | Arrow)* ] -> [ (`$A & Int |
                                                               Char | 
                                                               Atom |
                                                               (Any,Any) |
                                                               <(Any) (Any)>Any |
                                                               Arrow)* ]),{}))",
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  "fun tail x : ['A] : ['A] -> match x : ['A] with | (el : 'A) :: (rest : ['A]) -> rest";
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  "Test CDuce.runtime.poly.pair failed", "Abstraction(Dummy,,,,Sel(,((`$A & Int | Char | Atom | (Any,Any) |
                           <(Any) (Any)>Any | Arrow,`$B & Int | Char | 
                           Atom | (Any,Any) | <(Any) (Any)>Any | Arrow) -> 
`$A & Int | Char | Atom | (Any,Any) | <(Any) (Any)>Any | Arrow),{}))",
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  "fun pair x : ('A * 'B) : 'A -> match x : ('A * 'B) with | (z : 'A, y : 'B) -> z";
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  "Test CDuce.runtime.poly.match_abstr failed", "Apply(Match(Abstraction(Dummy,,,,Sel(,(`$A & Int | Char | Atom | (Any,Any) |
                                       <(Any) (Any)>Any | Arrow -> `$A & Int |
                                                                   Char |
                                                                   Atom |
                                                                   (Any,Any) |
                                                                   <(Any) (Any)>Any |
                                                                   Arrow),{})), {accept_chars=false; brs_disp=<disp>; brs_rhs=[| (2, TVar(Local(0),Comp({},{ { `$A = 
Int
 } }))) |]; brs_stack_pos=0}),Const(3))",
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  "(match (fun f x : 'A : 'A -> x) : ('A -> 'A) with | y : ('A -> 'A) -> y[{A/Int}]).3";
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]

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let tests_poly_abstr = [
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  (*
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  "Test CDuce.lambda.const_abstr failed",
  "Abstraction(Dummy,,,,Sel((Int -> Int),{}))",
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  "fun f x : 'A : 'A -> 2";
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  *)
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  "Test CDuce.lambda.identity_applied failed",
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  "Apply(PolyAbstraction(Dummy,Dummy,,,,Sel(Env(1),(`$A -> `$A),{ { `$A = 
Int
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 } }),Env(1)),Const(2))",
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  "(fun f x : 'A : 'A -> x)[{A/Int}].2";
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];;

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let tests_compile = "CDuce compile tests (Typed -> Lambda )" >:::
  List.map (fun (m,e,f) -> f >:: run_test_compile m e f) tests_poly_abstr
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(* Typed -> Lambda -> Value *)
let run_test_eval str =
  try
    let expr = Parse.ExprParser.of_string_no_file str in
    let env, texpr = Compute.to_typed expr in
    let evalexpr = Compile.compile_eval_expr env texpr in
    Printer.value_to_string evalexpr
  with
    | Compute.Error -> exit 3
    | Loc.Exc_located (loc, exn) ->
      let l = Loc.start_line loc in
      let cbegin = Loc.start_off loc - Loc.start_bol loc in
      let cend = Loc.stop_off loc - Loc.start_bol loc in
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      Printf.eprintf "File %s, line %d, characters %d-%d:\n" (Loc.file_name loc)
	l cbegin cend; raise exn
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    | e -> Printf.eprintf "Runtime error.\n"; raise e
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let tests_eval = "CDuce runtime tests (Typed -> Lambda -> Value)" >:::
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  [
    "abstr" >:: ( fun test_ctxt ->
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      assert_equal ~msg:"Test CDuce.runtime.abstr.let_simple failed"
	~printer:(fun x -> x) "3"
	(run_test_eval "let x : Int = 3 in x : Int");
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      assert_equal ~msg:"Test CDuce.runtime.abstr.let_medium failed"
	~printer:(fun x -> x) "2"
	(run_test_eval "let f : (Int -> Int) = (fun (Int -> Int) | x : Int -> x)
                        in (f.f.2) : Int");
      assert_equal ~msg:"Test CDuce.runtime.abstr.let_nested_simple failed"
	~printer:(fun x -> x) "3"
	(run_test_eval "let f : (Int -> Int) = (fun (Int -> Int) | x : Int -> x + 1)
                        in (let x : Int = f.2
                            in x : Int) : Int");
      assert_equal ~msg:"Test CDuce.runtime.abstr.let_nested_medium failed"
	~printer:(fun x -> x) "4"
	(run_test_eval "let f : (Int -> Int) = (fun (Int -> Int) | x : Int -> x + 1)
                        in (let x : Int = f.2
                            in f.x : Int) : Int");
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      assert_equal ~msg:"Test CDuce.runtime.abstr.simple failed"
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	~printer:(fun x -> x) "Abstraction((Int,Int),Id)"
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	(run_test_eval "fun f x : Int : Int -> 2");
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      assert_equal ~msg:"Test CDuce.runtime.abstr.medium failed"
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	~printer:(fun x -> x)
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	"Abstraction((Int,[ Char* ] -> [ Int Char* ]),Id)"
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	(run_test_eval "fun f x : Int y : String : (Int*String) -> x,y");
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    );

    "apply" >:: ( fun test_ctxt ->
      assert_equal ~msg:"Test CDuce.runtime.apply.simple failed"
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	~printer:(fun x -> x) "2"
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	(run_test_eval "(fun f x : Int : Int -> x).2");
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      assert_equal ~msg:"Test CDuce.runtime.apply.simple_pair failed"
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	~printer:(fun x -> x) "(3,2,Id)"
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	(run_test_eval "(fun f x : (Int*Int) : (Int*Int) -> x).(3,2)");
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      assert_equal ~msg:"Test CDuce.runtime.apply.medium failed"
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	~printer:(fun x -> x) "(2,3,Id)"
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	(run_test_eval "((fun f x : Int y : Int : (Int*Int) -> x,y).2).3");
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    );

    "misc" >:: ( fun test_ctxt ->
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      assert_equal ~msg:"Test CDuce.runtime.misc.even failed"
	~printer:(fun x -> x)
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	"Abstraction((Int,Bool),(Any \\ (Int),Any \\ (Int)),Id)"
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	(run_test_eval "fun ((Int -> Bool) & ((!Int) -> (!Int)))
                          | x : Int -> (match (x % 2) : Int with
                                          | 0 -> `true
                                          | 1 -> `false)
                          | x : (!Int) -> x");
      assert_equal ~msg:"Test CDuce.runtime.misc.even_applied1 failed"
	~printer:(fun x -> x)
	"Atom(false)"
	(run_test_eval "(fun ((Int -> Bool) & ((!Int) -> (!Int)))
                          | x : Int -> (match (x % 2) : Int with
                                          | 0 -> `true
                                          | 1 -> `false)
                          | x : (!Int) -> x).5");
      assert_equal ~msg:"Test CDuce.runtime.misc.even_applied2 failed"
	~printer:(fun x -> x)
	"Atom(true)"
	(run_test_eval "(fun ((Int -> Bool) & ((!Int) -> (!Int)))
                          | x : Int -> (match (x % 2) : Int with
                                          | 0 -> `true
                                          | 1 -> `false)
                          | x : (!Int) -> x).8");
      assert_equal ~msg:"Test CDuce.runtime.misc.even_applied3 failed"
	~printer:(fun x -> x)
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	"(2,(3,Atom(nil),Id),Id)"
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	(run_test_eval "(fun ((Int -> Bool) & ((!Int) -> (!Int)))
                          | x : Int -> (match (x % 2) : Int with
                                          | 0 -> `true
                                          | 1 -> `false)
                          | x : (!Int) -> x).[2; 3]");
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      assert_equal ~msg:"Test CDuce.runtime.misc.is_int failed"
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	~printer:(fun x -> x)
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	"Abstraction((Int,Bool),(Bool,Bool),(Any \\ (Int | Bool),Any \\ (Int | Bool)),Id)"
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	(run_test_eval "fun ((Int -> Bool) & (Bool -> Bool) & ((!(Int|Bool)) -> (!(Int|Bool))))
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                          | x : Int -> `true
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                          | x : Bool -> `false
                          | x : (!(Int|Bool)) -> x");
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      assert_equal ~msg:"Test CDuce.runtime.misc.is_int_applied1 failed"
	~printer:(fun x -> x)
	"Atom(true)"
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	(run_test_eval "(fun ((Int -> Bool) & (Bool -> Bool) & ((!(Int|Bool)) -> (!(Int|Bool))))
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                           | x : Int -> `true
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                           | x : Bool -> `false
                           | x : (!(Int|Bool)) -> x).2");
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      assert_equal ~msg:"Test CDuce.runtime.misc.is_int_applied2 failed"
	~printer:(fun x -> x)
	"Atom(false)"
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	(run_test_eval "(fun ((Int -> Bool) & (Bool -> Bool) & ((!(Int|Bool)) -> (!(Int|Bool))))
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                           | x : Int -> `true
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                           | x : Bool -> `false
                           | x : (!(Int|Bool)) -> x).`true");
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      assert_equal ~msg:"Test CDuce.runtime.misc.is_int_applied3 failed"
	~printer:(fun x -> x)
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	"(2,(3,Atom(nil),Id),Id)"
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	(run_test_eval "(fun ((Int -> Bool) & (Bool -> Bool) & ((!(Int|Bool)) -> (!(Int|Bool))))
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                           | x : Int -> `true
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                           | x : Bool -> `false
                           | x : (!(Int|Bool)) -> x).[2; 3]");
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      assert_equal ~msg:"Test CDuce.runtime.misc.map failed"
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	~printer:(fun x -> x)
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	"Abstraction((`$A -> `$B,[ `$A* ] -> [ `$B* ]),Id)"
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	(run_test_eval "fun map f : ('A -> 'B) x : ['A] : ['B] ->
                          match x : ['A] with
                            | (el : 'A) :: [] -> f.el
                            | (el : 'A) :: (rest : ['A]) -> ((f.el), ((map.f).rest))");
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      assert_equal ~msg:"Test CDuce.runtime.misc.map_even_simple failed"
	~printer:(fun x -> x)
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	"(\"hey\",(Atom(false),Atom(nil),Id),Id)"
	(run_test_eval "(fun map f : ('A->'B) x : ['A] : ['B] ->
                          match x : ['A] with
                            | (el : 'A) :: (rest : ['A]) -> ((f.el), ((map.f).rest))
                            | [] -> [])[{A/Int},{A/Bool}].(fun ((Int -> Bool) & ((!Int) -> (!Int)))
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                          | x : Int -> (match (x % 2) : Int with
                                          | 0 -> `true
                                          | 1 -> `false)
                          | x : (!Int) -> x).[\"hey\"; 3]");
      assert_equal ~msg:"Test CDuce.runtime.misc.map_even_medium failed"
	~printer:(fun x -> x)
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	"(Atom(true),(\"hey\",(Atom(false),(Atom(true),Atom(nil),Id),Id),Id),Id)"
	(run_test_eval "(fun map f : ('A->'B) x : ['A] : ['B] ->
                          match x : ['A] with
                            | (el : 'A) :: (rest : ['A]) -> ((f.el), ((map.f).rest))
                            | [] -> [])[{A/Int},{A/Bool}].(fun ((Int -> Bool) & ((!Int) -> (!Int)))
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                          | x : Int -> (match (x % 2) : Int with
                                          | 0 -> `true
                                          | 1 -> `false)
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                          | x : (!Int) -> x).[4; \"hey\"; 3; 2]");
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      assert_equal ~msg:"Test CDuce.runtime.misc.map_even_hard failed"
	~printer:(fun x -> x)
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	"(Atom(true),(\"hey\",((3,(5,Atom(nil),Id),{ { `$A = Int } ,{ `$A = Bool
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 } }),(Atom(true),(Abstraction((`$C,`$C),{ { `$A = Int } ,{ `$A = Bool
 } }),(Atom(false),Atom(nil),Id),Id),Id),Id),Id),Id)"
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	(run_test_eval "(fun map f : ('A->'B) x : ['A] : ['B] ->
                          match x : ['A] with
                            | (el : 'A) :: (rest : ['A]) -> ((f.el), ((map.f).rest))
                            | [] -> [])[{A/Int},{A/Bool}].(fun ((Int -> Bool) & ((!Int) -> (!Int)))
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                          | x : Int -> (match (x % 2) : Int with
                                          | 0 -> `true
                                          | 1 -> `false)
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                          | x : (!Int) -> x).[4; \"hey\"; [3; 5]; 2; (fun ('C -> 'C) | x : 'C -> x); 3+4]");
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      assert_equal ~msg:"Test CDuce.runtime.misc.map_is_int_simple failed"
	~printer:(fun x -> x)
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	"(Atom(false),(Atom(true),Atom(nil),Id),Id)"
	(run_test_eval "(fun map f : ('A->'B) x : ['A] : ['B] ->
                          match x : ['A] with
                            | (el : 'A) :: (rest : ['A]) -> ((f.el), ((map.f).rest))
                            | [] -> [])[{A/Int},{A/Bool}].(fun ((Int -> Bool) & (Bool -> Bool) & ((!(Int|Bool)) -> (!(Int|Bool))))
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                          | x : Int -> `true
                          | x : Bool -> `false
                          | x : (!(Int|Bool)) -> x).[`true; 3]");
      assert_equal ~msg:"Test CDuce.runtime.misc.map_is_int_medium failed"
	~printer:(fun x -> x)
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	"(Atom(false),(Atom(true),(Atom(false),Atom(nil),Id),Id),Id)"
	(run_test_eval "(fun map f : ('A->'B) x : ['A] : ['B] ->
                          match x : ['A] with
                            | (el : 'A) :: (rest : ['A]) -> ((f.el), ((map.f).rest))
                            | [] -> [])[{A/Int},{A/Bool}].(fun ((Int -> Bool) & (Bool -> Bool) & ((!(Int|Bool)) -> (!(Int|Bool))))
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                          | x : Int -> `true
                          | x : Bool -> `false
                          | x : (!(Int|Bool)) -> x).[`true; 3; `true]");
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      assert_equal ~msg:"Test CDuce.runtime.misc.firsts failed"
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	~printer:(fun x -> x)
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	"Abstraction(((Int,Int),X1 -> X1 where X1 = (Int,Int)),Id)"
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	(run_test_eval "fun firsts x : (Int*Int) y : (Int*Int) : (Int*Int) ->
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                     match x,y : ((Int*Int)*(Int*Int)) with
                       | (a : Int,_ : Int),(b : Int,_ : Int) -> a,b");
      assert_equal ~msg:"Test CDuce.runtime.misc.firsts_applied failed"
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	~printer:(fun x -> x) "(5,1,Id)"
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	(run_test_eval "((fun firsts x : (Int*Int) y : (Int*Int) : (Int*Int) ->
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                       match x,y : ((Int*Int)*(Int*Int)) with
                         | (a : Int,_ : Int),(b : Int,_ : Int) -> a,b)
                   .(5, 3)).(1, 4)");
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      assert_equal ~msg:"Test CDuce.runtime.misc.applier failed"
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	~printer:(fun x -> x) "Abstraction((Int,Int -> Int -> Int),Id)"
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	(run_test_eval "fun applier x : Int f : (Int->Int) : Int -> f.x");
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      assert_equal ~msg:"Test CDuce.runtime.misc.applier_applied failed"
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	~printer:(fun x -> x) "2"
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	(run_test_eval "((fun applier x : Int f : (Int->Int) : Int ->
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                       f.x).2).(fun g x : Int : Int -> x)");
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    );

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    "arith" >:: ( fun test_ctxt ->
      assert_equal ~msg:"Test CDuce.runtime.arith.simple failed"
	~printer:(fun x -> x) "5"
	(run_test_eval "2+3");
      assert_equal ~msg:"Test CDuce.runtime.arith.complete failed"
	~printer:(fun x -> x) "1"
	(run_test_eval "2+5*7%2-8/4");
    );

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    "match" >:: ( fun test_ctxt ->
      assert_equal ~msg:"Test CDuce.runtime.match.simple failed"
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	~printer:(fun x -> x) "1"
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	(run_test_eval "match 1 : Int with | 1 -> 1");
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      assert_equal ~msg:"Test CDuce.runtime.match.simple_var failed"
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	~printer:(fun x -> x) "2"
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	(run_test_eval "(fun f x : Int : Int ->
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                      match x : Int with | _ : Int -> x).2");
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      assert_equal ~msg:"Test CDuce.runtime.match.medium failed"
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	~printer:(fun x -> x) "2"
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	(run_test_eval "(fun f x : Int : Int ->
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                      match x : Int with | 1 -> 3 | _ : Int -> x).2");
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      assert_equal ~msg:"Test CDuce.runtime.match.rec failed"
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	~printer:(fun x -> x) "3"
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	(run_test_eval "(fun f x : Int : Int ->
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                      match x : Int with | 1 -> 3 | _ : Int -> f.1).2");
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      assert_equal ~msg:"Test CDuce.runtime.match.desugar_if failed"
	~printer:(fun x -> x) "0"
	(run_test_eval "((fun f x : Int y : Int : Int ->
                           match (x = y) : Bool with | `true -> 0 | `false -> 1).2).2");
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    );

    "string" >:: ( fun test_ctxt ->
      assert_equal ~msg:"Test CDuce.runtime.string.simple failed"
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	~printer:(fun x -> x) "\"The cake is a lie\""
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	(run_test_eval "\"The cake is a lie\"");
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    );

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    "list" >:: ( fun test_ctxt ->
      assert_equal ~msg:"Test CDuce.runtime.list.simple failed"
	~printer:(fun x -> x) "1"
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	(run_test_eval "match [1; 2] : [Int] with
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                     | (el : Int) :: (_ : [Int]) -> el
                     | [] -> 3");
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      assert_equal ~msg:"Test CDuce.runtime.list.simple2 failed"
	~printer:(fun x -> x) "3"
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	(run_test_eval "match [] : [Int] with
                     | (el : Int) :: (_ : [Int]) -> el
                     | [] -> 3");
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      assert_equal ~msg:"Test CDuce.runtime.list.tail failed"
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	~printer:(fun x -> x) "Abstraction(([ Int* ],[ Int* ]),Id)"
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	(run_test_eval "fun tail x : [Int] : [Int] -> match x : [Int] with
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                     | (_ : Int) :: (rest : [Int]) -> rest");
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      assert_equal ~msg:"Test CDuce.runtime.list.tail.eval failed"
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	~printer:(fun x -> x) "(2,(5,Atom(nil),Id),Id)"
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	(run_test_eval "(fun tail x : [Int] : [Int] -> match x : [Int] with
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                     | (_ : Int) :: (rest : [Int]) -> rest).[1; 2; 5]");
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      assert_equal ~msg:"Test CDuce.runtime.list.last failed"
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	~printer:(fun x -> x) "7"
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	(run_test_eval "(fun f x : [Int] : [Int] -> match x : [Int] with
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                     | (el : Int) :: [] -> el
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                     | (_ : Int) :: (rest : [Int]) -> f.rest).[1; 2; 5; 4; 8; 7]");
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      assert_equal ~msg:"Test CDuce.runtime.list.plusone failed"
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	~printer:(fun x -> x) "(2,(3,(6,(5,(9,8,Id),Id),Id),Id),Id)"
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	(run_test_eval "(fun f x : [Int] : [Int] -> match x : [Int] with
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                     | (el : Int) :: [] -> el+1
                     | (el : Int) :: (rest : [Int]) -> ((el+1), (f.rest))).[1; 2; 5; 4; 8; 7]");
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      assert_equal ~msg:"Test CDuce.runtime.list.concat failed"
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	~printer:(fun x -> x) "(1,(2,(5,(4,(8,(7,(2,(3,(4,Atom(nil),Id),Id),Id),Id),Id),Id),Id),Id),Id)"
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	(run_test_eval "(fun concat x : [[Int]] : [Int] -> match x : [[Int]] with
                     | (el : [Int]) :: [] -> el
                     | (el : [Int]) :: (rest : [[Int]]) -> (el@(concat.rest))).[[1; 2; 5; 4; 8; 7]; [2; 3; 4]]");
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      assert_equal ~msg:"Test CDuce.runtime.list.length_easy failed"
	~printer:(fun x -> x) "6"
	(run_test_eval "(fun length x : [Int] : Int -> match x : [Int] with
                     | [] -> 0
                     | (el : Int) :: (rest : [Int]) -> length.rest + 1).[1; 2; 5; 4; 8; 7]");
      assert_equal ~msg:"Test CDuce.runtime.list.length_hard failed"
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	~printer:(fun x -> x) "((6,0,Id),2,Id)"
	(run_test_eval "let length : (['A] -> Int) =
                          (fun f l : ['A] : Int -> match l : ['A] with
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                             | [] -> 0
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                             | (el : 'A) :: (rest : ['A]) -> f.rest + 1)[{A/Int},{A/Bool}]
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                        in
                        (length.[1; 2; 5; 4; 8; 7], length.[], length.[`true; 2]) : (Int*Int*Int)");
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      assert_equal ~msg:"Test CDuce.runtime.list.nth failed"
	~printer:(fun x -> x) "5"
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	(run_test_eval "(fun nth l : ['A] n : Int : 'A ->
                           match l : ['A] with
                             | (el : 'A) :: [] -> el
                             | (el : 'A) :: (rest : ['A]) ->
                               (if n = 0 then el else nth.rest.(n-1)))[{A/(Int|Bool)}].[1; 2; 5; `true; 2].2");
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      assert_equal ~msg:"Test CDuce.runtime.list.rev failed"
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	~printer:(fun x -> x) "(2,(Atom(true),(5,(2,(1,Atom(nil),Id),Id),Id),Id),Id)"
	(run_test_eval "(fun rev l : ['A] : ['A] ->
                           match l : ['A] with
                             | (el : 'A) :: [] -> [el]
                             | (el : 'A) :: (rest : ['A]) ->
                               (rev.rest) @ [el])[{A/(Int|Bool)}].[1; 2; 5; `true; 2]");
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    );

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    "union" >:: ( fun test_ctxt ->
      assert_equal ~msg:"Test CDuce.runtime.union.identity failed"
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	~printer:(fun x -> x) "Abstraction(([ Char* ] | Int,[ Char* ] | Int),Id)"
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	(run_test_eval "fun f x : (Int | String) : (Int | String) -> x");
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      assert_equal ~msg:"Test CDuce.runtime.union.match failed"
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	~printer:(fun x -> x) "Abstraction(([ Char* ] | Int,[ Char* ] | Int),Id)"
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	(run_test_eval "fun f x : (Int | String) : (Int | String) ->
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                     match x : (Int | String) with
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                       | _ : Int -> 2
                       | _ : String -> \"Piece of cake\"");
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      assert_equal ~msg:"Test CDuce.runtime.union.match_applied failed"
	~printer:(fun x -> x) "2"
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	(run_test_eval "(fun f x : (Int | String) : (Int | String) ->
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                      match x : (Int | String) with
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                        | _ : Int -> 2
                        | _ : String -> \"Piece of cake\").5");
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      assert_equal ~msg:"Test CDuce.runtime.union.match_applied2 failed"
	~printer:(fun x -> x) "\"Piece of cake\""
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	(run_test_eval "(fun f x : (Int | String) : (Int | String) ->
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                      match x : (Int | String) with
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                        | _ : Int -> 2
                        | _ : String -> \"Piece of cake\").\"test\"");
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    );

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    "union_precise" >:: ( fun test_ctxt ->
      assert_equal ~msg:"Test CDuce.runtime.union_precise.identity failed"
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	~printer:(fun x -> x) "Abstraction((Int,Int),([ Char* ],[ Char* ]),Id)"
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	(run_test_eval "fun ((Int -> Int) & (String -> String))
                          | x : (Int | String) -> x");
      assert_equal ~msg:"Test CDuce.runtime.union_precise.match failed"
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	~printer:(fun x -> x) "Abstraction((Int,Int),([ Char* ],[ Char* ]),Id)"
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	(run_test_eval "fun ((Int -> Int) & (String -> String))
                          | x : Int -> 2
                          | x : String -> \"Piece of cake\"");
      assert_equal ~msg:"Test CDuce.runtime.union_precise.match_applied failed"
	~printer:(fun x -> x) "2"
	(run_test_eval "(fun ((Int -> Int) & (String -> String))
                           | x : Int -> 2
                           | x : String -> \"Piece of cake\").5");
      assert_equal ~msg:"Test CDuce.runtime.union_precise.match_applied2 failed"
	~printer:(fun x -> x) "\"Piece of cake\""
	(run_test_eval "(fun ((Int -> Int) & (String -> String))
                           | x : Int -> 2
                           | x : String -> \"Piece of cake\").\"test\"");
    );

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    "poly" >:: ( fun test_ctxt ->
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      assert_equal ~msg:"Test CDuce.runtime.poly.identity_pure failed"
	~printer:(fun x -> x)
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	"Abstraction((`$A,`$A),Id)"
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	(run_test_eval "fun f x : 'A : 'A -> x");
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      assert_equal ~msg:"Test CDuce.runtime.poly.identity failed"
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	~printer:(fun x -> x)
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	"Abstraction((`$A,`$A),Sel(1,(`$A -> `$A),{ { `$A = Int } ,{ `$A = [ Char* ]
 } }))"
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	(run_test_eval "(fun f x : 'A : 'A -> x)[{A/Int},{A/String}]");
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      assert_equal ~msg:"Test CDuce.runtime.poly.identity_applied failed"
	~printer:(fun x -> x) "2"
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	(run_test_eval "((fun f x : 'A : 'A -> x)[{A/Int},{A/String}]).2");
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      assert_equal ~msg:"Test CDuce.runtime.poly.identity_applied2 failed"
	~printer:(fun x -> x) "2"
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	(run_test_eval "((fun f x : 'A : 'A -> x)[{A/Int}]).2");
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      assert_equal ~msg:"Test CDuce.runtime.poly.tail failed"
	~printer:(fun x -> x)
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	"Abstraction(([ `$A* ],[ `$A* ]),Id)"
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	(run_test_eval "fun tail x : ['A] : ['A] -> match x : ['A] with
                     | (_ : 'A) :: (rest : ['A]) -> rest");
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      assert_equal ~msg:"Test CDuce.runtime.poly.tail_applied failed"
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	~printer:(fun x -> x) "(7,(8,(5,Atom(nil),Id),Id),Id)"
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	(run_test_eval "(fun tail x : ['A] : ['A] -> match x : ['A] with
                     | (_ : 'A) :: (rest : ['A]) -> rest).[3; 7; 8; 5]");
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    );

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  ]

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let _ =
  run_test_tt_main (
    test_list
      [ tests_compile;
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        tests_eval
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      ]
  )
;;