1 files changed, 165 insertions, 0 deletions
diff --git a/ocaml/test/old/test_state.ml b/ocaml/test/old/test_state.ml
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+++ b/ocaml/test/old/test_state.ml
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+(* State Management Tests - Domain-safe state with Eio
+ *
+ * Tests:
+ * 1. Basic state creation and access
+ * 2. Atomic event counter
+ * 3. Save/load snapshots
+ * 4. Concurrent access across domains (future)
+ *)
+
+open Nock_lib
+
+let test_basic_state _env =
+  Printf.printf "Test: Basic state creation and access...\n";
+
+  let state = State.create () in
+
+  (* Check initial values *)
+  let eve = State.event_num state in
+  Printf.printf "  Initial event number: %Ld\n" eve;
+  assert (eve = 0L);
+
+  (* Create a simple kernel state *)
+  let kernel = Noun.cell (Noun.atom 1) (Noun.atom 2) in
+  State.boot state kernel;
+
+  let arvo = State.get_arvo state in
+  Printf.printf "  Kernel state loaded\n";
+  assert (arvo = kernel);
+
+  Printf.printf "  ✓ Basic state operations work!\n\n"
+
+let test_atomic_counter _env =
+  Printf.printf "Test: Atomic event counter...\n";
+
+  let state = State.create () in
+
+  (* Initial counter *)
+  assert (State.event_num state = 0L);
+
+  (* Increment a few times *)
+  for _i = 1 to 10 do
+    let _old = State.inc_event state in
+    ()
+  done;
+
+  let final = State.event_num state in
+  Printf.printf "  After 10 increments: %Ld\n" final;
+  assert (final = 10L);
+
+  Printf.printf "  ✓ Atomic counter works!\n\n"
+
+let test_snapshot_save_load env =
+  Printf.printf "Test: Snapshot save/load...\n";
+  Eio.Switch.run @@ fun _sw ->
+  let fs = Eio.Stdenv.fs env in
+
+  (* Create state with some data *)
+  let state1 = State.create () in
+  let kernel = Noun.cell
+    (Noun.cell (Noun.atom 42) (Noun.atom 99))
+    (Noun.atom 1000000) in
+  State.boot state1 kernel;
+
+  (* Increment event counter *)
+  for _i = 1 to 5 do
+    let _ = State.inc_event state1 in
+    ()
+  done;
+
+  Printf.printf "  State before save: %s\n" (State.summary state1);
+
+  (* Save snapshot *)
+  State.save_snapshot state1 ~fs "tmp/test_state.snapshot";
+  Printf.printf "  Snapshot saved\n";
+
+  (* Create new state and load snapshot *)
+  let state2 = State.create () in
+  let result = State.load_snapshot state2 ~fs "tmp/test_state.snapshot" in
+
+  match result with
+  | Ok eve ->
+      Printf.printf "  Snapshot loaded, event: %Ld\n" eve;
+      Printf.printf "  State after load: %s\n" (State.summary state2);
+
+      (* Verify event number *)
+      assert (State.event_num state2 = 5L);
+
+      (* Verify kernel state *)
+      let loaded_kernel = State.get_arvo state2 in
+      assert (loaded_kernel = kernel);
+
+      Printf.printf "  ✓ Snapshot save/load works!\n\n"
+  | Error msg ->
+      failwith ("Snapshot load failed: " ^ msg)
+
+let test_poke env =
+  Printf.printf "Test: Poke (event processing)...\n";
+  Eio.Switch.run @@ fun _sw ->
+  let _fs = Eio.Stdenv.fs env in
+
+  let state = State.create () in
+
+  (* Boot with a simple kernel *)
+  State.boot state (Noun.atom 0);
+  assert (State.event_num state = 0L);
+
+  (* Poke with an event *)
+  let event = Noun.cell (Noun.atom 1) (Noun.atom 2) in
+  let _effects = State.poke state event in
+
+  (* Event number should have incremented *)
+  assert (State.event_num state = 1L);
+  Printf.printf "  Event processed, new event number: %Ld\n" (State.event_num state);
+
+  (* Poke again *)
+  let _effects = State.poke state event in
+  assert (State.event_num state = 2L);
+
+  Printf.printf "  ✓ Poke increments event counter!\n\n"
+
+let test_peek _env =
+  Printf.printf "Test: Peek (read-only queries)...\n";
+
+  let state = State.create () in
+  let kernel = Noun.atom 42 in
+  State.boot state kernel;
+
+  (* Peek should return something (formula returns [path kernel]) *)
+  let result = State.peek state (Noun.atom 0) in
+  match result with
+  | Some _noun ->
+      (* Peek succeeded *)
+      Printf.printf "  ✓ Peek works!\n\n"
+  | None ->
+      failwith "Peek returned None"
+
+let test_cache _env =
+  Printf.printf "Test: Wish cache...\n";
+
+  let state = State.create () in
+
+  (* Check initial cache is empty *)
+  assert (String.contains (State.summary state) '0');
+
+  (* Clear cache (should be safe to call) *)
+  State.clear_cache state;
+
+  Printf.printf "  ✓ Cache operations work!\n\n"
+
+let () =
+  Eio_main.run @@ fun env ->
+  Printf.printf "\n=== State Management Tests (Domain-safe with Eio) ===\n\n";
+
+  (* Clean up old test files *)
+  (try Unix.system "rm -rf tmp/test_state*" |> ignore with _ -> ());
+
+  test_basic_state env;
+  test_atomic_counter env;
+  test_snapshot_save_load env;
+  test_poke env;
+  test_peek env;
+  test_cache env;
+
+  Printf.printf "=== All state tests passed! ✓ ===\n";
+  Printf.printf "\nNext: Test concurrent access across domains...\n"