mirror of
https://github.com/c-cube/ocaml-containers.git
synced 2026-05-05 08:54:22 -04:00
142 lines
4.3 KiB
OCaml
142 lines
4.3 KiB
OCaml
include (val Containers_testlib.make ~__FILE__ ())
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module H = Containers_xxhash
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(* Gold tests: hash_string with seed=0 *)
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;;
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t @@ fun () ->
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assert_equal ~printer:Int64.to_string (-1205034819632174695L)
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(H.hash_string "" 0L);
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assert_equal ~printer:Int64.to_string (-7444071767201028348L)
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(H.hash_string "" 42L);
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assert_equal ~printer:Int64.to_string 2794345569481354659L
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(H.hash_string "hello" 0L);
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assert_equal ~printer:Int64.to_string (-4367754540140381902L)
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(H.hash_string "hello" 42L);
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assert_equal ~printer:Int64.to_string 1513236774081638803L
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(H.hash_string "the quick brown fox" 0L);
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assert_equal ~printer:Int64.to_string 6882318601984224800L
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(H.hash_string "the quick brown fox" 42L);
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true
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;;
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(* Gold tests: hash_int64 with seed=0 *)
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t @@ fun () ->
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assert_equal ~printer:Int64.to_string 3803688792395291579L (H.hash_int64 0L 0L);
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assert_equal ~printer:Int64.to_string (-6977822845260490347L)
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(H.hash_int64 1L 0L);
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assert_equal ~printer:Int64.to_string (-8804195676797548855L)
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(H.hash_int64 (-1L) 0L);
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assert_equal ~printer:Int64.to_string (-7296932117151183542L)
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(H.hash_int64 1234567890123456789L 0L);
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true
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;;
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(* Gold tests: hash_int32 with seed=0 *)
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t @@ fun () ->
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assert_equal ~printer:Int64.to_string 4246796580750024372L (H.hash_int32 0l 0L);
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assert_equal ~printer:Int64.to_string (-851299076295404719L)
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(H.hash_int32 1l 0L);
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assert_equal ~printer:Int64.to_string 9185342943168159635L
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(H.hash_int32 (-1l) 0L);
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assert_equal ~printer:Int64.to_string (-2929917330072466447L)
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(H.hash_int32 42l 0L);
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true
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;;
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(* Gold tests: hash_int with seed=0 *)
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t @@ fun () ->
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assert_equal ~printer:Int64.to_string 3803688792395291579L (H.hash_int 0 0L);
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assert_equal ~printer:Int64.to_string (-6977822845260490347L) (H.hash_int 1 0L);
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assert_equal ~printer:Int64.to_string (-8804195676797548855L)
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(H.hash_int (-1) 0L);
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assert_equal ~printer:Int64.to_string (-5379971487550586029L) (H.hash_int 42 0L);
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true
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;;
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(* Gold tests: hash_bool *)
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t @@ fun () ->
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assert_equal ~printer:Int64.to_string 3803688792395291579L
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(H.hash_bool false 0L);
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assert_equal ~printer:Int64.to_string (-6977822845260490347L)
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(H.hash_bool true 0L);
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true
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;;
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(* Gold tests: hash_char *)
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t @@ fun () ->
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(* 'a' = 97 *)
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assert_equal ~printer:Int64.to_string (H.hash_int 97 0L) (H.hash_char 'a' 0L);
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(* '0' = 48 *)
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assert_equal ~printer:Int64.to_string (H.hash_int 48 0L) (H.hash_char '0' 0L);
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true
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;;
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(* Property tests: determinism *)
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q ~count:10_000 Q.string @@ fun s ->
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Int64.equal (H.hash_string s 0L) (H.hash_string s 0L)
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;;
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q ~count:10_000 Q.int64 @@ fun v ->
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Int64.equal (H.hash_int64 v 0L) (H.hash_int64 v 0L)
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;;
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q ~count:10_000 Q.int @@ fun v ->
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Int64.equal (H.hash_int v 0L) (H.hash_int v 0L)
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;;
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q ~count:10_000 Q.bool @@ fun b ->
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Int64.equal (H.hash_bool b 0L) (H.hash_bool b 0L)
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;;
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q ~count:10_000 Q.char @@ fun c ->
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Int64.equal (H.hash_char c 0L) (H.hash_char c 0L)
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;;
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(* Different seeds give different results for the same input (seed nonzero) *)
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q ~count:10_000 (Q.pair Q.string Q.int64) @@ fun (s, seed) ->
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Q.assume (not (Int64.equal seed 0L));
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not (Int64.equal (H.hash_string s 0L) (H.hash_string s seed))
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;;
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q ~count:10_000 (Q.pair Q.int64 Q.int64) @@ fun (v, seed) ->
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Q.assume (not (Int64.equal seed 0L));
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not (Int64.equal (H.hash_int64 v 0L) (H.hash_int64 v seed))
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;;
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q ~count:10_000 (Q.pair Q.int Q.int64) @@ fun (v, seed) ->
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Q.assume (not (Int64.equal seed 0L));
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not (Int64.equal (H.hash_int v 0L) (H.hash_int v seed))
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;;
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(* Different inputs give different results for the same seed *)
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q ~count:10_000 (Q.pair Q.string Q.string) @@ fun (s1, s2) ->
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Q.assume (not (String.equal s1 s2));
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not (Int64.equal (H.hash_string s1 0L) (H.hash_string s2 0L))
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;;
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q ~count:10_000 (Q.pair Q.int64 Q.int64) @@ fun (a, b) ->
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Q.assume (not (Int64.equal a b));
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not (Int64.equal (H.hash_int64 a 0L) (H.hash_int64 b 0L))
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;;
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q ~count:10_000 (Q.pair Q.int Q.int) @@ fun (a, b) ->
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Q.assume (a <> b);
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not (Int64.equal (H.hash_int a 0L) (H.hash_int b 0L))
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;;
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(* Stress test: hash 100k strings of varying lengths, non-empty => non-zero *)
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t @@ fun () ->
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for len = 0 to 99 do
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for _ = 1 to 1000 do
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let s = String.make len 'x' in
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let h = H.hash_string s 0L in
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if len > 0 then
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if Int64.equal h 0L then
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failwith
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(Printf.sprintf "unexpected zero hash for string of len %d" len)
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done
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done;
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true
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let () = Containers_testlib.run_all ~descr:"test xxhash" [ get () ]
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