# code-review-testing

> Claude/Codex skill by [@openai](https://omgskills.com/library/openai/index.md) · 103k stars · Updated 2026-08-02

Test authoring guidance

## Install

```sh
git clone https://github.com/openai/codex /tmp/codex && ln -s /tmp/codex/.codex/skills/code-review-testing ~/.claude/skills/code-review-testing
```

## From README

For agent changes prefer integration tests over unit tests. Integration tests are under core/suite and use testcodex to set up a test instance of codex. Features that change the agent logic MUST add an integration test: Provide a list of major logic changes and user-facing behaviors that need to be tested. If unit tests are needed, put them in a dedicated test file (tests.rs). Avoid test-only functions in the main implementation. Check whether there are existing helpers to make tests more streamlined and readable.

## Links

- HTML page: https://omgskills.com/skills/openai/codex/code-review-testing/
- GitHub: https://github.com/openai/codex
- Author: [@openai](https://omgskills.com/library/openai/index.md)

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