Jest
Jest是由Meta（原Facebook）开源的JavaScript测试框架，适用于前端和Node.js项目的单元测试、集成测试及端到端测试。其主要特征包括：开箱即用、无需复杂配置；内置代码覆盖率报告、快照测试（Snapshot Testing）和模拟（Mock）功能；支持并行测试执行以提升效率。Jest与React、Vue、Angular等主流前端框架兼容良好，是JavaScript生态中最广泛使用的测试工具之一。
Timeline (last 90 days)
The author's choice of Enzyme rather than Jest as the analogy implies that Catalyst is positioned as an inspection tool that goes deep into the Agent execution chain, rather than merely end-to-end evaluation.
All Facts (4)
Happy DOM是一个用TypeScript实现的无头浏览器环境，已被Vitest、Jest、Bun等测试框架作为默认或可选的DOM环境
90%Unverified自动化验证层通常依赖CI/CD管道理念，包括静态分析、类型检查、单元测试执行、集成测试和安全扫描等步骤
85%UnverifiedJest由Facebook于2014年发布，Mocha于2011年发布，这些主流测试框架都依赖Node运行时
85%UnverifiedThe author's choice of Enzyme rather than Jest as the analogy implies that Catalyst is positioned as an inspection tool that goes deep into the Agent execution chain, rather than merely end-to-end evaluation.
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