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110 lines
2.6 KiB
OCaml
110 lines
2.6 KiB
OCaml
include (val Containers_testlib.make ~__FILE__ ())
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module Cbor = Containers_cbor
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let gen_c : Cbor.t Q.Gen.t =
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let open Q.Gen in
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sized @@ fix
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@@ fun self size ->
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let recurse = self (size - 1) in
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let base =
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[
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1, return `Null;
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1, return `Undefined;
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( 3,
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let+ x = int >|= Int64.of_int in
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`Int x );
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( 1,
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let+ b = bool in
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`Bool b );
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( 1,
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let+ x = 0 -- 19 in
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`Simple x );
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( 1,
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let+ x = 26 -- 127 in
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`Simple x );
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( 1,
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let+ f = float in
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`Float f );
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( 2,
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let* n = frequency [ 20, 0 -- 150; 1, 151 -- 100_000 ] in
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let+ s = string_size ~gen:printable (return n) in
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`Text s );
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( 2,
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let* n = frequency [ 20, 0 -- 150; 1, 151 -- 100_000 ] in
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let+ s = string_size ~gen:char (return n) in
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`Bytes s );
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]
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in
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let g_base = frequency base in
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let rec_ =
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[
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( 2,
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let+ l =
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if size > 10 then
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list_size (0 -- 1024) g_base
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else
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list_size (0 -- 10) recurse
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in
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`Array l );
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( 2,
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let+ l =
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if size > 10 then
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list_size (0 -- 1024) (pair g_base g_base)
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else
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list_size (0 -- 5) (pair g_base recurse)
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in
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`Map l );
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( 1,
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let+ i = 0 -- 1024 and+ sub = self (size - 1) in
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`Tag (i, sub) );
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]
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in
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frequency
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(if size > 0 then
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base @ rec_
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else
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base)
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let rec shrink (c : Cbor.t) : Cbor.t Q.Iter.t =
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let open Q.Iter in
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match c with
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| `Null | `Undefined | `Bool false -> empty
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| `Bool true -> return (`Bool false)
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| `Simple i ->
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let+ i = Q.Shrink.int i in
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`Simple i
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| `Int i ->
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let+ i = Q.Shrink.int (Int64.to_int i) in
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`Int (Int64.of_int i)
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| `Tag (t, i) ->
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let+ i = shrink i in
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`Tag (t, i)
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| `Float _ -> empty
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| `Array l ->
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let+ l = Q.Shrink.list ~shrink l in
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`Array l
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| `Map l ->
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let shrink_pair (a, b) =
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(let+ a = shrink a in
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a, b)
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<+> let+ b = shrink b in
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a, b
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in
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let+ l = Q.Shrink.list ~shrink:shrink_pair l in
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`Map l
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| `Text s ->
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let+ s = Q.Shrink.string s in
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`Text s
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| `Bytes s ->
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let+ s = Q.Shrink.string s in
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`Bytes s
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let arb = Q.make ~shrink ~print:Cbor.to_string_diagnostic gen_c;;
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q ~count:1_000 ~long_factor:10 arb @@ fun c ->
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let s = Cbor.encode c in
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let c' = Cbor.decode_exn s in
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if not (c = c') then
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Q.Test.fail_reportf "@[<hv2>roundtrip failed:@ from %a@ to %a@]"
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Cbor.pp_diagnostic c Cbor.pp_diagnostic c';
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true
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