refactor(代码重复): 抽取共享工具函数与 UI 组件，消除多处重复实现

Co-authored-by: Cursor <cursoragent@cursor.com>

src/lib/generators/__tests__/random.test.ts

@@ -0,0 +1,22 @@
+import { randomInt, randomPick } from '@/lib/generators/random';
+
+describe('generators/random', () => {
+  it('randomInt 应返回闭区间内的整数', () => {
+    vi.spyOn(Math, 'random').mockReturnValue(0.5);
+
+    expect(randomInt(1, 10)).toBe(6);
+    expect(randomInt(5, 5)).toBe(5);
+  });
+
+  it('randomPick 应对单元素数组返回该元素', () => {
+    vi.spyOn(Math, 'random').mockReturnValue(0);
+
+    expect(randomPick(['only'])).toBe('only');
+  });
+
+  it('randomPick 应返回数组中的元素', () => {
+    vi.spyOn(Math, 'random').mockReturnValue(0.99);
+
+    expect(randomPick(['a', 'b', 'c'])).toBe('c');
+  });
+});

src/lib/generators/basic.ts

@@ -4,20 +4,7 @@
  */
 
 import type { GeneratorDefinition } from '@/types/testDataGenerator';
-
-/**
- * 生成随机整数
- */
-function randomInt(min: number, max: number): number {
-  return Math.floor(Math.random() * (max - min + 1)) + min;
-}
-
-/**
- * 从数组中随机选择
- */
-function randomPick<T>(arr: T[]): T {
-  return arr[Math.floor(Math.random() * arr.length)];
-}
+import { randomInt, randomPick } from './random';
 
 /**
  * 随机整数生成器

src/lib/generators/business.ts

@@ -4,20 +4,7 @@
  */
 
 import type { GeneratorDefinition } from '@/types/testDataGenerator';
-
-/**
- * 生成随机整数
- */
-function randomInt(min: number, max: number): number {
-  return Math.floor(Math.random() * (max - min + 1)) + min;
-}
-
-/**
- * 从数组中随机选择
- */
-function randomPick<T>(arr: T[]): T {
-  return arr[Math.floor(Math.random() * arr.length)];
-}
+import { randomInt, randomPick } from './random';
 
 /**
  * 格式化日期

src/lib/generators/personal.ts

@@ -4,6 +4,7 @@
  */
 
 import type { GeneratorDefinition } from '@/types/testDataGenerator';
+import { randomInt, randomPick } from './random';
 
 // 中文姓氏
 const SURNAMES = [
@@ -162,20 +163,6 @@ const CITIES: Record<string, string[]> = {
   四川省: ['成都市', '绵阳市', '德阳市', '宜宾市'],
 };
 
-/**
- * 生成随机整数
- */
-function randomInt(min: number, max: number): number {
-  return Math.floor(Math.random() * (max - min + 1)) + min;
-}
-
-/**
- * 从数组中随机选择
- */
-function randomPick<T>(arr: T[]): T {
-  return arr[Math.floor(Math.random() * arr.length)];
-}
-
 /**
  * 中文姓名生成器
  */

src/lib/generators/random.ts

@@ -0,0 +1,7 @@
+export function randomInt(min: number, max: number): number {
+  return Math.floor(Math.random() * (max - min + 1)) + min;
+}
+
+export function randomPick<T>(arr: readonly T[]): T {
+  return arr[Math.floor(Math.random() * arr.length)];
+}

src/lib/generators/technical.ts

@@ -4,20 +4,7 @@
  */
 
 import type { GeneratorDefinition } from '@/types/testDataGenerator';
-
-/**
- * 生成随机整数
- */
-function randomInt(min: number, max: number): number {
-  return Math.floor(Math.random() * (max - min + 1)) + min;
-}
-
-/**
- * 从数组中随机选择
- */
-function randomPick<T>(arr: T[]): T {
-  return arr[Math.floor(Math.random() * arr.length)];
-}
+import { randomInt, randomPick } from './random';
 
 /**
  * UUID 生成器