Files
delta/test/test_harness.ml
T

109 lines
2.9 KiB
OCaml

type case = string * (unit -> unit)
let failures = ref 0
let cases = ref 0
let check name condition =
incr cases;
if condition then Printf.printf "ok %s\n" name
else (
incr failures;
Printf.printf "FAIL %s\n" name)
let fail name message =
incr cases;
incr failures;
Printf.printf "FAIL %s: %s\n" name message
let check_equal_int name expected actual =
incr cases;
if expected = actual then Printf.printf "ok %s\n" name
else (
incr failures;
Printf.printf "FAIL %s: expected %d, got %d\n" name expected actual)
let check_equal_string name expected actual =
incr cases;
if expected = actual then Printf.printf "ok %s\n" name
else (
incr failures;
Printf.printf "FAIL %s: expected %S, got %S\n" name expected actual)
let check_true name message condition =
if condition then (incr cases; Printf.printf "ok %s\n" name)
else fail name message
let expect_diagnostic name thunk =
incr cases;
try
thunk ();
incr failures;
Printf.printf "FAIL %s: expected a diagnostic error\n" name
with
| Diagnostic.Error diagnostic ->
if diagnostic.Diagnostic.message = "" then (
incr failures;
Printf.printf "FAIL %s: empty diagnostic message\n" name)
else Printf.printf "ok %s\n" name
| error ->
incr failures;
Printf.printf "FAIL %s: unexpected exception %s\n" name (Printexc.to_string error)
let run_case (name, thunk) =
try thunk () with
| exception_ ->
incr failures;
Printf.printf "FAIL %s: raised %s\n" name (Printexc.to_string exception_)
let run_suite suite cases =
print_endline ("--- " ^ suite ^ " ---");
List.iter run_case cases
let failure_count () = !failures
let case_count () = !cases
let root () = try Sys.getenv "DELTA_ROOT" with Not_found -> "."
let fixture name = Filename.concat (root ()) (Filename.concat "test/fixture" name)
let read_fixture name = Native.read_file (fixture name)
let error_of thunk =
try
ignore (thunk ());
None
with Diagnostic.Error diagnostic -> Some diagnostic
let parse text = Parse.program text
let resolve text = Resolve.program (parse text)
let infer text = Infer.program (resolve text)
let parse_error text = error_of (fun () -> parse text)
let resolve_error text = error_of (fun () -> resolve text)
let infer_error text = error_of (fun () -> infer text)
let check_message name expected thunk =
match error_of thunk with
| None -> fail name "expected a diagnostic"
| Some diagnostic -> check_equal_string name expected diagnostic.Diagnostic.message
type rng = { mutable state : int }
let rng seed = { state = seed land 0x3FFFFFFF }
let next rng =
rng.state <- (rng.state * 1103515245 + 12345) land 0x3FFFFFFF;
rng.state
let range rng bound = if bound <= 0 then 0 else next rng mod bound
let pick rng items = List.nth items (range rng (List.length items))
let string_of_int_list items = Util.join "," (List.map string_of_int items)