From 9f4769a4c9badecdc3b8f86d6b6b2af00f179d67 Mon Sep 17 00:00:00 2001 From: LOG1997 <2694233102@qq.com> Date: Mon, 8 Dec 2025 22:42:20 +0800 Subject: [PATCH] =?UTF-8?q?test(random):=20=E6=B7=BB=E5=8A=A0=E9=9A=8F?= =?UTF-8?q?=E6=9C=BA=E5=85=83=E7=B4=A0=E6=8A=BD=E5=8F=96=E5=87=BD=E6=95=B0?= =?UTF-8?q?=E7=9A=84=E5=85=A8=E9=9D=A2=E6=B5=8B=E8=AF=95=E7=94=A8=E4=BE=8B?= =?UTF-8?q?=20Test=20#91?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit - 新增 Random.test.ts 文件，对 getRandomElements 函数进行详尽测试 - 包括基础功能、边界情况（count 为 0、负数、超出数组长度） - 支持空数组、单元素数组、字符串数组、对象数组等多种数据类型 - 增加概率性测试，验证多次调用结果不完全一致 - 20万次循环验证各元素被抽中概率接近理论值，确保算法公平性 --- __test__/Button.test.ts | 41 ------------- __test__/Lottery.test.ts | 41 ------------- __test__/Random.test.ts | 124 +++++++++++++++++++++++++++++++++++++++ __test__/Request.test.ts | 31 ---------- 4 files changed, 124 insertions(+), 113 deletions(-) delete mode 100644 __test__/Button.test.ts delete mode 100644 __test__/Lottery.test.ts create mode 100644 __test__/Random.test.ts delete mode 100644 __test__/Request.test.ts diff --git a/__test__/Button.test.ts b/__test__/Button.test.ts deleted file mode 100644 index e08d2ce..0000000 --- a/__test__/Button.test.ts +++ /dev/null @@ -1,41 +0,0 @@ -import Button from '@/components/Button/index.vue' - -import { shallowMount } from '@vue/test-utils' -import { describe, expect, test } from 'vitest' -// 测试分组 -describe('Button', () => { - // mount - test('Buttons slot text', () => { - // @vue/test-utils - const wrapper = shallowMount(Button, { - slots: { - default: 'Button', - }, - }) - // 断言 - expect(wrapper.text()).toBe('Button') - }) - test('Button click', () => { - const wrapper = shallowMount(Button) - wrapper.trigger('click') - expect(wrapper.emitted('click')).toBeTruthy() - }) - test('Button disabled', () => { - const wrapper = shallowMount(Button, { - props: { - disabled: true, - }, - }) - wrapper.trigger('click') - expect(wrapper.emitted('click')).toBeFalsy() - }) - test('Button not disabled', () => { - const wrapper = shallowMount(Button, { - props: { - disabled: false, - }, - }) - wrapper.trigger('click') - expect(wrapper.emitted('click')).toBeTruthy() - }) -}) diff --git a/__test__/Lottery.test.ts b/__test__/Lottery.test.ts deleted file mode 100644 index e08d2ce..0000000 --- a/__test__/Lottery.test.ts +++ /dev/null @@ -1,41 +0,0 @@ -import Button from '@/components/Button/index.vue' - -import { shallowMount } from '@vue/test-utils' -import { describe, expect, test } from 'vitest' -// 测试分组 -describe('Button', () => { - // mount - test('Buttons slot text', () => { - // @vue/test-utils - const wrapper = shallowMount(Button, { - slots: { - default: 'Button', - }, - }) - // 断言 - expect(wrapper.text()).toBe('Button') - }) - test('Button click', () => { - const wrapper = shallowMount(Button) - wrapper.trigger('click') - expect(wrapper.emitted('click')).toBeTruthy() - }) - test('Button disabled', () => { - const wrapper = shallowMount(Button, { - props: { - disabled: true, - }, - }) - wrapper.trigger('click') - expect(wrapper.emitted('click')).toBeFalsy() - }) - test('Button not disabled', () => { - const wrapper = shallowMount(Button, { - props: { - disabled: false, - }, - }) - wrapper.trigger('click') - expect(wrapper.emitted('click')).toBeTruthy() - }) -}) diff --git a/__test__/Random.test.ts b/__test__/Random.test.ts new file mode 100644 index 0000000..6741433 --- /dev/null +++ b/__test__/Random.test.ts @@ -0,0 +1,124 @@ +import { describe, expect, it } from 'vitest' +import { getRandomElements } from '@/views/Home/utils/random' + +describe('getRandomElements', () => { + // 测试基本功能：从数组中获取指定数量的元素 + it('should return specified number of elements', () => { + const sourceArray = [1, 2, 3, 4, 5] + const result = getRandomElements(sourceArray, 3) + + expect(result).toHaveLength(3) + result.forEach((element) => { + expect(sourceArray).toContain(element) + }) + }) + + // 测试边界情况：count为0 + it('should return empty array when count is 0', () => { + const sourceArray = [1, 2, 3] + const result = getRandomElements(sourceArray, 0) + + expect(result).toEqual([]) + }) + + // 测试边界情况：count为负数 + it('should return empty array when count is negative', () => { + const sourceArray = [1, 2, 3] + const result = getRandomElements(sourceArray, -1) + + expect(result).toEqual([]) + }) + + // 测试边界情况：count大于等于数组长度 + it('should return shuffled array when count equals or exceeds array length', () => { + const sourceArray = [1, 2, 3] + const result1 = getRandomElements(sourceArray, 3) + const result2 = getRandomElements(sourceArray, 5) + + expect(result1).toHaveLength(3) + expect(result2).toHaveLength(3) + + // 验证返回的元素与原数组相同 + expect(result1.sort()).toEqual(sourceArray.sort()) + expect(result2.sort()).toEqual(sourceArray.sort()) + }) + + // 测试空数组情况 + it('should return empty array when source array is empty', () => { + const sourceArray: number[] = [] + const result = getRandomElements(sourceArray, 3) + + expect(result).toEqual([]) + }) + + // 测试单元素数组 + it('should handle single element array', () => { + const sourceArray = [42] + const result = getRandomElements(sourceArray, 1) + + expect(result).toEqual([42]) + }) + + // 测试字符串数组 + it('should work with string arrays', () => { + const sourceArray = ['a', 'b', 'c', 'd', 'e'] + const result = getRandomElements(sourceArray, 2) + + expect(result).toHaveLength(2) + result.forEach((element) => { + expect(sourceArray).toContain(element) + }) + }) + + // 测试对象数组 + it('should work with object arrays', () => { + const sourceArray = [ + { id: 1, name: 'Alice' }, + { id: 2, name: 'Bob' }, + { id: 3, name: 'Charlie' }, + ] + const result = getRandomElements(sourceArray, 2) + + expect(result).toHaveLength(2) + result.forEach((element) => { + expect(sourceArray).toContain(element) + }) + }) + + // 测试多次调用应产生不同结果（概率性测试） + it('should produce different results on multiple calls', () => { + const sourceArray = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20] + const results = new Set() + + // 多次调用并收集结果 + for (let i = 0; i < 10; i++) { + const result = getRandomElements(sourceArray, 5).sort().join(',') + results.add(result) + } + + // 虽然有极小概率会相同，但大多数情况下应该有不同的结果 + expect(results.size).toBeGreaterThan(1) + }) + // 多次调用，每个元素抽中的概率基本上相等 + it('should have approximately equal probabilities for each element', () => { + const sourceArray = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20] + const times = 200000 // 次数 + const count = 5 // 抽奖个数 + const expectedProbability = count / sourceArray.length + const elementCounts = new Map() + + // 多次调用并统计元素出现的次数 + for (let i = 0; i < times; i++) { + const result = getRandomElements(sourceArray, count) + result.forEach((element) => { + const count = elementCounts.get(element) || 0 + elementCounts.set(element, count + 1) + }) + } + elementCounts.forEach((value) => { + // 验证每个元素出现的概率接近相等 + const probability = value / times + expect(probability).toBeCloseTo(expectedProbability, 2) + }) + }) +}) diff --git a/__test__/Request.test.ts b/__test__/Request.test.ts deleted file mode 100644 index 497f810..0000000 --- a/__test__/Request.test.ts +++ /dev/null @@ -1,31 +0,0 @@ -// test axios request -import Request from '@/api/request'; -import { describe, it, expect, vi } from 'vitest'; -import { mount, flushPromises } from '@vue/test-utils'; -import axios from 'axios'; - -const fn = vi.fn(); -const mockRes = { - data: { - code: 200, - success: true, - message: 'success', - data: { - name: 'test', - age: 18, - }, - }, -}; -fn(mockRes); -fn.mock.calls[0] === [mockRes]; - -describe('Request', () => { - it('should return data when request success', async () => { - const request = new Request(); - const res = await request({ - url: '/test', - method: 'GET', - }); - expect(res).toEqual(mockRes.data); - }); -});