Vitest 5 vs Jest 对比

// Vitest 5 - 购物车合计计算函数的测试
// vitest.config.ts 与 vite.config.ts 共享；无需额外 transform
import { describe, it, expect, vi } from 'vitest'
import { calculateCartTotal } from './cart'
import { fetchDiscount } from './discount-api'

vi.mock('./discount-api')

describe('calculateCartTotal', () => {
  // Vitest 5：clearMocks 默认值为 true，无需额外的清理调用
  it('indirim kodu olmadan ara toplami dogru hesaplar', () => {
    const items = [
      { price: 129.9, qty: 2 },
      { price: 49.5, qty: 1 },
    ]
    expect(calculateCartTotal(items)).toBeCloseTo(309.3, 2)
  })

  it('gecerli indirim kodunda vi.when ile kosullu mock kullanir', async () => {
    // Vitest 5 新 API：根据参数返回不同的 mock 行为
    vi.when(fetchDiscount).calledWith('SEPET10').thenResolve({ percent: 10 })
    vi.when(fetchDiscount).calledWith('GECERSIZ').thenReject(new Error('invalid code'))

    const items = [{ price: 100, qty: 1 }]
    const total = await calculateCartTotal(items, 'SEPET10')

    expect(total).toBeCloseTo(90, 2)
    expect(fetchDiscount).toHaveBeenCalledWith('SEPET10')
  })

  it('gecersiz kod hata firlatir', async () => {
    vi.when(fetchDiscount).calledWith('GECERSIZ').thenReject(new Error('invalid code'))
    const items = [{ price: 100, qty: 1 }]

    await expect(calculateCartTotal(items, 'GECERSIZ')).rejects.toThrow('invalid code')
  })
})

// Monorepo：vitest -p web --coverage（仅运行 'web' 项目 + 生成覆盖率报告）

// Jest 30 - 购物车合计计算函数的测试
// 需要另外配置 babel.config.js 或 ts-jest transform 链
const { calculateCartTotal } = require('./cart')
const { fetchDiscount } = require('./discount-api')

jest.mock('./discount-api')

describe('calculateCartTotal', () => {
  afterEach(() => {
    jest.clearAllMocks() // 在 Jest 中不是默认行为，需要手动调用
  })

  it('indirim kodu olmadan ara toplami dogru hesaplar', () => {
    const items = [
      { price: 129.9, qty: 2 },
      { price: 49.5, qty: 1 },
    ]
    expect(calculateCartTotal(items)).toBeCloseTo(309.3, 2)
  })

  it('gecerli indirim kodunda mockResolvedValue kullanir', async () => {
    fetchDiscount.mockImplementation((code) => {
      if (code === 'SEPET10') return Promise.resolve({ percent: 10 })
      return Promise.reject(new Error('invalid code'))
    })

    const items = [{ price: 100, qty: 1 }]
    const total = await calculateCartTotal(items, 'SEPET10')

    expect(total).toBeCloseTo(90, 2)
    expect(fetchDiscount).toHaveBeenCalledWith('SEPET10')
  })

  it('gecersiz kod hata firlatir', async () => {
    fetchDiscount.mockRejectedValue(new Error('invalid code'))
    const items = [{ price: 100, qty: 1 }]

    await expect(calculateCartTotal(items, 'GECERSIZ')).rejects.toThrow('invalid code')
  })
})

// 使用 jest --projects packages/web --coverage 在 monorepo 中仅运行 'web' 包