Annotation

Introduction
Browser Mode Goes Stable
Visual Regression Testing
Playwright Integration Enhancements
Extended Testing Capabilities
Pros and Cons
Conclusion
常见问题

科技新闻

Vitest 4.0 发布：浏览器测试、视觉回归与 Playwright 支持

Vitest 4.0 引入了稳定的浏览器测试、视觉回归功能和无缝的 Playwright 集成，以增强 JavaScript 开发测试流程。

Vitest 4.0 testing framework with browser mode and visual regression testing capabilities

科技新闻1 min read

Introduction

Vitest 4.0 achieves a major milestone with stable Browser Mode and visual testing features. It removes experimental tags and enhances Playwright integration for better workflows.

Browser Mode Goes Stable

Browser Mode is now stable, enabling confident integration into CI/CD pipelines. Despite API changes, it signals maturity for real-world testing scenarios.

Visual Regression Testing

Visual regression testing captures UI screenshots to detect visual changes, addressing gaps in automated workflows and providing visual validation.

Playwright Integration Enhancements

Enhanced Playwright integration generates trace files and simplifies iframe testing with frameLocator API, streamlining IDE debugging.

Extended Testing Capabilities

New features include test lifecycle hooks, schema validation, and Chai assert methods, while the basic reporter is removed.

Pros and Cons

Advantages

Stable Browser Mode for production use
Built-in visual regression testing
Enhanced Playwright trace support
Improved iframe testing
Direct VSCode debugging
Extended test hooks
Schema validation

Disadvantages

Breaking API changes
Basic reporter removed
Increased complexity
Browser mode setup overhead

Conclusion

Vitest 4.0 evolves with key features now production-ready, combining browser mode, visual testing, and Playwright for modern web apps. Breaking changes require attention but solidify its position.

常见问题

Vitest 4.0 的主要功能有哪些？

Vitest 4.0 引入了稳定的浏览器模式、视觉回归测试、Playwright 跟踪生成、用于 iframe 的 frameLocator API、VSCode 调试以及通过模式验证功能增强的测试生命周期管理。

Vitest 4.0 是否已准备好用于生产环境？

是的，浏览器模式已稳定用于生产工作流程，但开发人员在从先前版本升级前应检查可能需要进行代码调整的重大 API 变更。

Vitest 中的视觉回归测试是如何工作的？

Vitest 的视觉回归测试在浏览器测试期间捕获 UI 截图，并将其与参考图像进行比较，以自动检测组件和页面中意外的视觉变化。

Vitest 4.0 的主要优势是什么？

主要优势包括用于生产测试的稳定浏览器模式、内置的视觉回归功能、增强的 Playwright 集成以进行跟踪生成和调试，以及改进的测试生命周期管理。

如何处理 Vitest 4.0 中的重大变更？

开发人员应仔细查看发布说明，并更新其测试代码以适应 API 变更，例如对报告器和生命周期钩子的修改，以确保兼容性。