From 396acf3bbbe00a192cb0ea0a9ccf91b1d8d2850b Mon Sep 17 00:00:00 2001
From: Fuwn <50817549+Fuwn@users.noreply.github.com>
Date: Sat, 24 Jan 2026 13:09:50 +0000
Subject: Initial commit

Created from https://vercel.com/new
---
 src/lib/__tests__/detect.test.ts | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 src/lib/__tests__/detect.test.ts

(limited to 'src/lib/__tests__/detect.test.ts')

diff --git a/src/lib/__tests__/detect.test.ts b/src/lib/__tests__/detect.test.ts
new file mode 100644
index 0000000..0395aef
--- /dev/null
+++ b/src/lib/__tests__/detect.test.ts
@@ -0,0 +1,22 @@
+import { getIpAddress } from '../ip';
+
+const IP = '127.0.0.1';
+const BAD_IP = '127.127.127.127';
+
+test('getIpAddress: Custom header', () => {
+  process.env.CLIENT_IP_HEADER = 'x-custom-ip-header';
+
+  expect(getIpAddress(new Headers({ 'x-custom-ip-header': IP }))).toEqual(IP);
+});
+
+test('getIpAddress: CloudFlare header', () => {
+  expect(getIpAddress(new Headers({ 'cf-connecting-ip': IP }))).toEqual(IP);
+});
+
+test('getIpAddress: Standard header', () => {
+  expect(getIpAddress(new Headers({ 'x-forwarded-for': IP }))).toEqual(IP);
+});
+
+test('getIpAddress: No header', () => {
+  expect(getIpAddress(new Headers())).toEqual(null);
+});
-- 
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