From 3aa2120bc5bfe3546566d090ed15d2a7e4879196 Mon Sep 17 00:00:00 2001
From: "google-labs-jules[bot]"
 <161369871+google-labs-jules[bot]@users.noreply.github.com>
Date: Tue, 5 May 2026 04:39:08 +0000
Subject: [PATCH] =?UTF-8?q?=F0=9F=A7=AA=20[testing=20improvement]=20Add=20?=
 =?UTF-8?q?unit=20tests=20for=20cn=20utility=20function?=
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🎯 What: Added unit tests for the previously untested `cn` function in `src/utils/helper.ts`.
📊 Coverage: Tested multiple valid strings, ignoring undefined/falsy values, ignoring empty strings, and handling an empty input list.
✨ Result: `cn` is now thoroughly tested and regressions in it can be easily caught.

Co-authored-by: sunnylqm <615282+sunnylqm@users.noreply.github.com>
---
 src/utils/helper.test.ts | 24 +++++++++++++++++++++++-
 1 file changed, 23 insertions(+), 1 deletion(-)

diff --git a/src/utils/helper.test.ts b/src/utils/helper.test.ts
index 24a366a..e21e9b7 100644
--- a/src/utils/helper.test.ts
+++ b/src/utils/helper.test.ts
@@ -1,5 +1,5 @@
 import { describe, expect, test } from 'bun:test';
-import { isExpVersion, isPasswordValid } from './helper';
+import { cn, isExpVersion, isPasswordValid } from './helper';
 
 describe('isPasswordValid', () => {
   test('should return true for valid passwords', () => {
@@ -65,3 +65,25 @@ describe('isExpVersion', () => {
     expect(isExpVersion({ rollout: { '1.0.0': 110 } }, '1.0.0')).toBe(false);
   });
 });
+
+describe('cn', () => {
+  test('should combine multiple valid strings', () => {
+    expect(cn('class1', 'class2', 'class3')).toBe('class1 class2 class3');
+  });
+
+  test('should ignore undefined values', () => {
+    expect(cn('class1', undefined, 'class2')).toBe('class1 class2');
+  });
+
+  test('should ignore empty strings', () => {
+    expect(cn('class1', '', 'class2')).toBe('class1 class2');
+  });
+
+  test('should return empty string when handling an empty input list', () => {
+    expect(cn()).toBe('');
+  });
+
+  test('should return empty string when all inputs are falsy', () => {
+    expect(cn('', undefined)).toBe('');
+  });
+});