From 2cc21194aa290af338917702bde416ca149bf847 Mon Sep 17 00:00:00 2001
From: Asher Gomez <ashersaupingomez@gmail.com>
Date: Mon, 20 May 2024 17:16:27 +1000
Subject: [PATCH] test(bytes): add test for negative `start` index for
 `indexOfNeedle()` (#4768)

tests(bytes): add test for negative `start` index for `indexOfNeedle()`
---
 bytes/index_of_needle_test.ts | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/bytes/index_of_needle_test.ts b/bytes/index_of_needle_test.ts
index 7d369b1e5..5a2b92960 100644
--- a/bytes/index_of_needle_test.ts
+++ b/bytes/index_of_needle_test.ts
@@ -62,3 +62,22 @@ Deno.test("indexOfNeedle() handles start index less than 0", () => {
     -1,
   );
 });
+
+Deno.test("indexOfNeedle() handles negative start index", () => {
+  assertEquals(
+    indexOfNeedle(
+      new Uint8Array([0, 1, 2, 0, 1, 2]),
+      new Uint8Array([0, 1]),
+      -3,
+    ),
+    3,
+  );
+  assertEquals(
+    indexOfNeedle(
+      new Uint8Array([0, 1, 2, 1, 1, 2]),
+      new Uint8Array([0, 1]),
+      -3,
+    ),
+    -1,
+  );
+});