From 1e564190fb75c2083dffaaef3576364f13b4d984 Mon Sep 17 00:00:00 2001
From: marko1olo <barsukdana@gmail.com>
Date: Sat, 6 Jun 2026 05:30:49 +0400
Subject: [PATCH] Fix Whirlpool rounds validation

---
 src/core/operations/Whirlpool.mjs | 10 ++++++++--
 tests/operations/tests/Hash.mjs   | 22 ++++++++++++++++++++++
 2 files changed, 30 insertions(+), 2 deletions(-)

diff --git a/src/core/operations/Whirlpool.mjs b/src/core/operations/Whirlpool.mjs
index c2364912..d7d69621 100644
--- a/src/core/operations/Whirlpool.mjs
+++ b/src/core/operations/Whirlpool.mjs
@@ -5,6 +5,7 @@
  */
 
 import Operation from "../Operation.mjs";
+import OperationError from "../errors/OperationError.mjs";
 import {runHash} from "../lib/Hash.mjs";
 
 /**
@@ -46,8 +47,13 @@ class Whirlpool extends Operation {
      * @returns {string}
      */
     run(input, args) {
-        const variant = args[0].toLowerCase();
-        return runHash(variant, input, {rounds: args[1]});
+        const variant = args[0].toLowerCase(),
+            rounds = args[1] ?? 10;
+
+        if (!Number.isInteger(rounds) || rounds < 1 || rounds > 10)
+            throw new OperationError("Rounds must be an integer between 1 and 10");
+
+        return runHash(variant, input, {rounds});
     }
 
 }
diff --git a/tests/operations/tests/Hash.mjs b/tests/operations/tests/Hash.mjs
index ba502934..536da734 100644
--- a/tests/operations/tests/Hash.mjs
+++ b/tests/operations/tests/Hash.mjs
@@ -338,6 +338,28 @@ TestRegister.addTests([
             }
         ]
     },
+    {
+        name: "Whirlpool rejects negative rounds",
+        input: "Hello, World!",
+        expectedOutput: "Rounds must be an integer between 1 and 10",
+        recipeConfig: [
+            {
+                "op": "Whirlpool",
+                "args": ["Whirlpool", -1]
+            }
+        ]
+    },
+    {
+        name: "Whirlpool rejects fractional rounds",
+        input: "Hello, World!",
+        expectedOutput: "Rounds must be an integer between 1 and 10",
+        recipeConfig: [
+            {
+                "op": "Whirlpool",
+                "args": ["Whirlpool", 1.2]
+            }
+        ]
+    },
     {
         name: "Snefru 2 128",
         input: "Hello, World!",