swh:1:snp:61dcfc0dd5674a0e65803e88039c122d9532074e
Tip revision: 6e3eb2355976c287ceb3235590fd29716bf5aaf0 authored by Peter Duchovni on 16 July 2021, 18:30:44 UTC
Counterexample: extend inline_phantom
Counterexample: extend inline_phantom
Tip revision: 6e3eb23
int31_int32.ml
(*****************************************************************************)
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open Data_encoding.Encoding
let test_too_big_fails i =
let exception Failed in
let encoder = int32 in
let encodable = i in
let encoded = Data_encoding.Binary.to_string_exn encoder encodable in
let decoder = int31 in
try
let _decoded = Data_encoding.Binary.of_string_exn decoder encoded in
raise Failed
with
| Failed as exc -> raise exc
| _ -> ()
let test_32_is_not_31 () =
test_too_big_fails Int32.max_int ;
test_too_big_fails Int32.(sub max_int 1l) ;
test_too_big_fails Int32.(sub max_int 3124l) ;
test_too_big_fails Int32.min_int ;
test_too_big_fails Int32.(add min_int 1l) ;
test_too_big_fails Int32.(add min_int 3124l) ;
()
let test_small_enough_succeeds i =
let encoder = int31 in
let encodable = i in
let encoded = Data_encoding.Binary.to_string_exn encoder encodable in
let decoder = int31 in
let decoded = Data_encoding.Binary.of_string_exn decoder encoded in
assert (encodable = decoded)
let test_31_is_31 () =
test_small_enough_succeeds 0 ;
test_small_enough_succeeds 0x23f4 ;
test_small_enough_succeeds Int32.(to_int (div max_int 2l)) ;
test_small_enough_succeeds Int32.(to_int (div min_int 2l)) ;
()
let test_small_enough_is_compatible i =
let encoder = int32 in
let encodable = i in
let encoded = Data_encoding.Binary.to_string_exn encoder encodable in
let decoder = int31 in
let decoded = Data_encoding.Binary.of_string_exn decoder encoded in
assert (encodable = Int32.of_int decoded)
let test_small_32_is_31 () =
test_small_enough_is_compatible 0l ;
test_small_enough_is_compatible 0x23f4l ;
test_small_enough_is_compatible Int32.(div max_int 2l) ;
test_small_enough_is_compatible Int32.(div min_int 2l) ;
()
let tests =
[
("int32-max-int-not-an-int31", `Quick, test_32_is_not_31);
("small-int32-is-int31", `Quick, test_small_32_is_31);
("int31-is-int31", `Quick, test_31_is_31);
]