/**
 * 前端单元测试套件
 * 
 * 使用 Vitest + Vue Test Utils 进行测试
 */

import { describe, it, expect, vi, beforeEach } from 'vitest'
import { mount, flushPromises } from '@vue/test-utils'
import { createPinia, setActivePinia } from 'pinia'

// ==================== 用户 Store 测试 ====================

describe('User Store', () => {
  let pinia

  beforeEach(() => {
    pinia = createPinia()
    setActivePinia(pinia)
    localStorage.clear()
  })

  it('should initialize with empty token', async () => {
    const { useUserStore } = await import('@/stores/user.js')
    const userStore = useUserStore(pinia)
    
    expect(userStore.token).toBe('')
    expect(userStore.isLoggedIn).toBe(false)
  })

  it('should initialize with token from localStorage', async () => {
    localStorage.setItem('access_token', 'test_token_123')
    
    const { useUserStore } = await import('@/stores/user.js')
    const store = useUserStore(pinia)
    
    expect(store.token).toBe('test_token_123')
  })

  it('should logout and clear tokens', async () => {
    localStorage.setItem('access_token', 'test_token')
    localStorage.setItem('refresh_token', 'test_refresh')
    
    const { useUserStore } = await import('@/stores/user.js')
    const store = useUserStore(pinia)
    
    store.logout()
    
    expect(store.token).toBe('')
    expect(localStorage.getItem('access_token')).toBeNull()
  })
})

// ==================== 工具函数测试 ====================

describe('Utility Functions', () => {
  it('should format volume correctly', () => {
    const formatVolume = (volume) => {
      if (volume >= 100000000) {
        return (volume / 100000000).toFixed(2) + '亿'
      } else if (volume >= 10000) {
        return (volume / 10000).toFixed(2) + '万'
      }
      return volume.toString()
    }
    
    expect(formatVolume(150000000)).toBe('1.50 亿')
    expect(formatVolume(150000)).toBe('15.00 万')
    expect(formatVolume(1500)).toBe('1500')
  })

  it('should format price correctly', () => {
    const formatPrice = (price) => {
      return price.toFixed(2)
    }
    
    expect(formatPrice(4000.5)).toBe('4000.50')
    expect(formatPrice(4000)).toBe('4000.00')
  })

  it('should calculate price change correctly', () => {
    const calculateChange = (current, previous) => {
      return ((current - previous) / previous * 100).toFixed(2)
    }
    
    expect(calculateChange(4100, 4000)).toBe('2.50')
    expect(calculateChange(3900, 4000)).toBe('-2.50')
  })
})

// ==================== API 客户端测试 ====================

describe('API Client', () => {
  it('should include auth token in requests', () => {
    localStorage.setItem('access_token', 'test_token_123')
    expect(localStorage.getItem('access_token')).toBe('test_token_123')
  })

  it('should handle 401 errors', () => {
    localStorage.removeItem('access_token')
    localStorage.removeItem('refresh_token')
    expect(localStorage.getItem('access_token')).toBeNull()
  })
})