next.js

7777dadc - docs: add deploy tests documentation to contributing guide (#92388)

docs: add deploy tests documentation to contributing guide (#92388) <!-- CURSOR_AGENT_PR_BODY_BEGIN --> ## What? Adds documentation to the contributing guide explaining how deploy tests work and how to run them. ## Why? Deploy tests are an important part of the Next.js CI pipeline that verify the framework works correctly when deployed to Vercel. However, there was no documentation explaining: - How deploy tests are triggered on PRs - How to run deploy tests locally This came up in a Slack discussion where team members were debugging deploy test failures and sharing knowledge about how to trigger and run these tests. ## How? Added a new "Deploy Tests" section to `contributing/core/testing.md` that explains: 1. **Triggering Deploy Tests on PRs**: Deploy tests don't run on every PR by default. To trigger them, you can modify a test file in the deploy test suite, which causes CI to run deploy tests for that file. 2. **Running Deploy Tests Locally**: You can run deploy tests locally using: - `NEXT_TEST_VERSION` to test against a specific commit's pre-built tarball - `NEXT_TEST_DEPLOY_URL` to skip the deploy step and test against an existing deployment <!-- NEXT_JS_LLM_PR --> <!-- CURSOR_AGENT_PR_BODY_END --> [Slack Thread](https://vercel.slack.com/archives/C04KC8A53T7/p1775265710012189?thread_ts=1775265710.012189&cid=C04KC8A53T7) <div><a href="https://cursor.com/agents/bc-014a1052-4dfe-5db4-931d-86efa411016e"><picture><source media="(prefers-color-scheme: dark)" srcset="https://cursor.com/assets/images/open-in-web-dark.png"><source media="(prefers-color-scheme: light)" srcset="https://cursor.com/assets/images/open-in-web-light.png"><img alt="Open in Web" width="114" height="28" src="https://cursor.com/assets/images/open-in-web-dark.png"></picture></a>&nbsp;<a href="https://cursor.com/background-agent?bcId=bc-014a1052-4dfe-5db4-931d-86efa411016e"><picture><source media="(prefers-color-scheme: dark)" srcset="https://cursor.com/assets/images/open-in-cursor-dark.png"><source media="(prefers-color-scheme: light)" srcset="https://cursor.com/assets/images/open-in-cursor-light.png"><img alt="Open in Cursor" width="131" height="28" src="https://cursor.com/assets/images/open-in-cursor-dark.png"></picture></a>&nbsp;</div> --------- Co-authored-by: Cursor Agent <cursoragent@cursor.com>