y

scripts/history_binary_regression_audit.js

@@ -0,0 +1,46 @@
+"use strict";
+
+const path = require("path");
+global.window = global;
+
+const encoder = new TextEncoder();
+const decoder = new TextDecoder();
+global.TarinaiSaveCodec = {
+  encodeBinarySnapshot(snapshot) {
+    return encoder.encode(JSON.stringify(snapshot));
+  },
+  decodeBinarySnapshot(bytes) {
+    return JSON.parse(decoder.decode(bytes));
+  },
+};
+global.TarinaiSnapshot = {
+  createSnapshot(world) {
+    return { v: 1, a: "tj1", value: world.value, time: world.time };
+  },
+};
+global.TarinaiRestoreCoordinator = {
+  restoreSnapshot(snapshot, world) {
+    world.value = snapshot.value;
+    world.time = snapshot.time;
+  },
+};
+
+require(path.join(__dirname, "..", "js", "history_system.js"));
+
+const world = { value: 1, time: 10 };
+if (!global.TarinaiHistory.capture(world, "first")) throw new Error("initial history capture failed");
+if (!(world._undoStack[0].bytes instanceof Uint8Array)) throw new Error("history entry is not binary");
+if ("snapshot" in world._undoStack[0] || "patch" in world._undoStack[0]) throw new Error("legacy object history payload remains");
+if (global.TarinaiHistory.capture(world, "duplicate")) throw new Error("duplicate snapshot was not suppressed");
+
+world.value = 2;
+world.time = 20;
+if (!global.TarinaiHistory.capture(world, "second")) throw new Error("second history capture failed");
+world.value = 3;
+world.time = 30;
+let result = global.TarinaiHistory.undo(world);
+if (!result.ok || world.value !== 2 || world.time !== 20) throw new Error("undo did not restore the binary snapshot");
+result = global.TarinaiHistory.redo(world);
+if (!result.ok || world.value !== 3 || world.time !== 30) throw new Error("redo did not restore the captured current state");
+
+console.log("[OK] binary undo/redo history, duplicate suppression, and synchronous restore passed");