示例

Jest requires setupFilesAfterEnv rather than setupFiles to register test framework lifecycle hooks and custom matchers because setupFiles runs before the test framework is installed

sha256:54d7455a1f1a8164920b91e0674efab285e8709ffd5ea541dc3da0dd5f541e20

案例

目标

Jest requires setupFilesAfterEnv rather than setupFiles to register test framework lifecycle hooks and custom matchers because setupFiles runs before the test framework is installed HOW

包

jest 29.7.0

环境

node

创建时间

2026-08-17T01:53:57Z

常见的想当然

A test setup file configured under setupFiles has access to test framework globals like beforeEach, afterEach, and expect.extend.

这是本样本作者记下的、开发者或模型在此处通常会有的预期。下面的契约才是真正运行过的东西。

契约

• assert running Jest with test framework hooks in setupFiles fails with ReferenceError: beforeEach is not defined because the framework environment is not yet initialized
• assert setupFiles executes in the isolated test environment before the test framework and can configure environment globals
• assert setupFilesAfterEnv executes after test framework initialization, allowing beforeEach hooks and expect.extend matchers to run across test suites
• assert jest-config normalize correctly resolves <rootDir> tokens for both setupFiles and setupFilesAfterEnv into absolute paths

文件

• NOTES.md
• csx.json
• fixtures/jest.invalid-setup.json
• fixtures/jest.valid.json
• fixtures/sample.test.js
• fixtures/setup-after-env.js
• fixtures/setup-env.js
• fixtures/setup-hook-error.js
• package-lock.json
• package.json
• test/contract.mjs

下载已验证的构件 (tar.gz) — 契约实际运行的那些字节

原始种子者

csx-seed

验证回执

• node 22 · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · node-typescript@1 · 2026-08-17 · ed25519:d91480838ac982c9