From b489bb3b980ac05a57e2b902de9dfe022014dddc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=D0=9A=D0=B8=D1=80=D0=B8=D0=BB=D0=BB=20=D0=92=D0=B5=D1=82?=
 =?UTF-8?q?=D1=80=D0=BE=D0=B2?= <vetrovk@gmail.com>
Date: Fri, 26 Jun 2026 13:46:41 +0300
Subject: [PATCH] fix: validate wrap line width

---
 src/core/operations/Wrap.mjs    | 16 ++++++++++++++++
 tests/operations/tests/Wrap.mjs | 33 +++++++++++++++++++++++++++++++++
 2 files changed, 49 insertions(+)

diff --git a/src/core/operations/Wrap.mjs b/src/core/operations/Wrap.mjs
index c6e57f88..303ea9e2 100644
--- a/src/core/operations/Wrap.mjs
+++ b/src/core/operations/Wrap.mjs
@@ -5,6 +5,9 @@
  */
 
 import Operation from "../Operation.mjs";
+import OperationError from "../errors/OperationError.mjs";
+
+const MAX_LINE_WIDTH = 65536;
 
 /**
  * Wrap operation
@@ -27,6 +30,9 @@ class Wrap extends Operation {
                 "name": "Line Width",
                 "type": "number",
                 "value": 64,
+                "min": 1,
+                "max": MAX_LINE_WIDTH,
+                "integer": true,
             },
         ];
     }
@@ -39,6 +45,16 @@ class Wrap extends Operation {
     run(input, args) {
         if (!input) return "";  // Handle empty input
         const lineWidth = args[0];
+
+        if (!Number.isInteger(lineWidth))
+            throw new OperationError("Line Width must be an integer.");
+
+        if (lineWidth < 1)
+            throw new OperationError("Line Width must be greater than or equal to 1.");
+
+        if (lineWidth > MAX_LINE_WIDTH)
+            throw new OperationError(`Line Width must be less than or equal to ${MAX_LINE_WIDTH}.`);
+
         const regex = new RegExp(`.{1,${lineWidth}}`, "g");
         return input.match(regex).join("\n");
     }
diff --git a/tests/operations/tests/Wrap.mjs b/tests/operations/tests/Wrap.mjs
index 8d7c9a51..2373d070 100644
--- a/tests/operations/tests/Wrap.mjs
+++ b/tests/operations/tests/Wrap.mjs
@@ -40,5 +40,38 @@ TestRegister.addTests([
                 "args": [10]
             },
         ],
+    },
+    {
+        name: "Wrap rejects negative line width",
+        input: "hi, how about you",
+        expectedOutput: "Line Width must be greater than or equal to 1.",
+        recipeConfig: [
+            {
+                "op": "Wrap",
+                "args": [-1]
+            },
+        ],
+    },
+    {
+        name: "Wrap rejects floating-point line width",
+        input: "hi, how about you",
+        expectedOutput: "Line Width must be an integer.",
+        recipeConfig: [
+            {
+                "op": "Wrap",
+                "args": [1.1]
+            },
+        ],
+    },
+    {
+        name: "Wrap rejects excessively large line width",
+        input: "hi, how about you",
+        expectedOutput: "Line Width must be less than or equal to 65536.",
+        recipeConfig: [
+            {
+                "op": "Wrap",
+                "args": [1.1761717177171882e+23]
+            },
+        ],
     }
 ]);