在日常开发中，Storybook 7 迁移完整指南 is being used more and more frequently. This article systematically explains its usage, principles, and optimization strategies.

Quick Start

We can improve it in the following ways:

import { test, expect } from '@playwright/test'

test.describe('用户登录流程', () => {
  test('成功登录跳转到首页', async ({ page }) => {
    await page.goto('/login')
    await page.fill('[data-testid="email"]', 'admin@example.com')
    await page.fill('[data-testid="password"]', 'admin123')
    await page.click('[data-testid="submit-btn"]')
    await expect(page).toHaveURL('/dashboard')
    await expect(page.locator('.welcome')).toContainText('欢迎回来')
  })
})

This approach has been running stably in production for over six months and has been practically validated.

Internal Principles

Let's start with the basic implementation:

import { render, screen, waitFor } from '@testing-library/react'
import userEvent from '@testing-library/user-event'
import { LoginForm } from './LoginForm'

describe('LoginForm', () => {
  it('提交有效的登录表单', async () => {
    const onSubmit = jest.fn()
    render(<LoginForm onSubmit={onSubmit} />)
    await userEvent.type(screen.getByLabelText(/邮箱/), 'user@example.com')
    await userEvent.type(screen.getByLabelText(/密码/), 'password123')
    await userEvent.click(screen.getByRole('button', { name: /登录/ }))
    await waitFor(() => {
      expect(onSubmit).toHaveBeenCalledWith({
        email: 'user@example.com', password: 'password123'
      })
    })
  })
})

This code demonstrates the basic usage. In real projects, you also need to consider error handling and edge cases.

Business Practice

Building on this foundation, we can further optimize:

import { test, expect } from '@playwright/test'

test.describe('用户登录流程', () => {
  test('成功登录跳转到首页', async ({ page }) => {
    await page.goto('/login')
    await page.fill('[data-testid="email"]', 'admin@example.com')
    await page.fill('[data-testid="password"]', 'admin123')
    await page.click('[data-testid="submit-btn"]')
    await expect(page).toHaveURL('/dashboard')
    await expect(page.locator('.welcome')).toContainText('欢迎回来')
  })
})

This pattern is very practical in large projects and can significantly reduce maintenance costs.

Performance Comparison

Usage in real projects tends to be more complex:

import { render, screen, waitFor } from '@testing-library/react'
import userEvent from '@testing-library/user-event'
import { LoginForm } from './LoginForm'

describe('LoginForm', () => {
  it('提交有效的登录表单', async () => {
    const onSubmit = jest.fn()
    render(<LoginForm onSubmit={onSubmit} />)
    await userEvent.type(screen.getByLabelText(/邮箱/), 'user@example.com')
    await userEvent.type(screen.getByLabelText(/密码/), 'password123')
    await userEvent.click(screen.getByRole('button', { name: /登录/ }))
    await waitFor(() => {
      expect(onSubmit).toHaveBeenCalledWith({
        email: 'user@example.com', password: 'password123'
      })
    })
  })
})

Through this approach, both the testability and scalability of the code are improved.

Troubleshooting

Here is a complete example:

import { test, expect } from '@playwright/test'

test.describe('用户登录流程', () => {
  test('成功登录跳转到首页', async ({ page }) => {
    await page.goto('/login')
    await page.fill('[data-testid="email"]', 'admin@example.com')
    await page.fill('[data-testid="password"]', 'admin123')
    await page.click('[data-testid="submit-btn"]')
    await expect(page).toHaveURL('/dashboard')
    await expect(page.locator('.welcome')).toContainText('欢迎回来')
  })
})

Pay attention to boundary condition handling, which is critical in production.

Summary

• Always verify compatibility before using in production
• In team collaboration, conventions and documentation are more important than the technology itself
• Stay updated with the community; technical solutions need continuous iteration
• Don't adopt new technology just for the sake of it
• Code examples are for reference only and need to be adjusted according to your business scenario