🧪 test: 新增链表单元测试

Author: Hedwig-Fang

test/listNode.spec.ts

@@ -0,0 +1,26 @@
+import { test, expect, describe } from 'vitest';
+const ListNode = require('../common/structures/ListNode');
+
+test('toArray 正常数组', () => {
+  // 创建链表
+  const head = new ListNode(1);
+  const node1 = new ListNode(2);
+  const node2 = new ListNode(3);
+  head.next = node1;
+  node1.next = node2;
+
+ const arr = ListNode.toArray(head)
+ expect(arr).toEqual([1, 2, 3])
+})
+test('toArray undefined', () => {
+  const arr = ListNode.toArray(undefined)
+  expect(arr).toEqual([])
+})
+test('toArray false', () => {
+  const arr = ListNode.toArray(false)
+  expect(arr).toEqual([undefined])
+})
+test('toArray 1', () => {
+  const arr = ListNode.toArray(1)
+  expect(arr).toEqual([undefined])
+})