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docs: add testing workflows guide to foundations#1115

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johnlindquist wants to merge 5 commits intomainfrom
docs/testing-workflows
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docs: add testing workflows guide to foundations#1115
johnlindquist wants to merge 5 commits intomainfrom
docs/testing-workflows

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@johnlindquist johnlindquist commented Feb 18, 2026

Summary

  • Adds testing guide to Foundations section covering unit testing steps, integration testing workflows, hooks/webhooks testing, error handling tests, and stress testing
  • Motivated by usage data: 242K testing runs and need for developer experience guidance
  • All code samples pass TypeScript type-checking validation
  • Link validation passes with zero errors

Test plan

  • Verify link validation passes (bun run lint:links - 0 errors)
  • Verify TypeScript code samples compile (pnpm test:docs - all testing.mdx samples pass)
  • Verify MDX renders correctly in dev server
  • Verify meta.json and index.mdx navigation works

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⚠️ No Changeset found

Latest commit: 591af90

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

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vercel bot commented Feb 18, 2026 •
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🧪 E2E Test Results

❌ Some tests failed

Summary

Passed Failed Skipped Total
✅ ▲ Vercel Production 147 0 9 156
✅ 💻 Local Development 278 0 34 312
✅ 📦 Local Production 188 0 20 208
✅ 🐘 Local Postgres 188 0 20 208
✅ 🪟 Windows 49 0 3 52
❌ 🌍 Community Worlds 103 1 6 110
✅ 📋 Other 45 0 7 52
Total 998 1 99 1098

❌ Failed Tests

🌍 Community Worlds (1 failed)

mongodb (1 failed):

  • webhookWorkflow

Details by Category

✅ ▲ Vercel Production
App Passed Failed Skipped
✅ astro 48 0 4
✅ nextjs-turbopack 51 0 1
✅ sveltekit 48 0 4
✅ 💻 Local Development
App Passed Failed Skipped
✅ express-stable 45 0 7
✅ nextjs-turbopack-canary 49 0 3
✅ nextjs-webpack-canary 49 0 3
✅ nitro-stable 45 0 7
✅ sveltekit-stable 45 0 7
✅ vite-stable 45 0 7
✅ 📦 Local Production
App Passed Failed Skipped
✅ express-stable 45 0 7
✅ nextjs-turbopack-canary 49 0 3
✅ nextjs-webpack-canary 49 0 3
✅ nuxt-stable 45 0 7
✅ 🐘 Local Postgres
App Passed Failed Skipped
✅ fastify-stable 45 0 7
✅ nextjs-turbopack-stable 49 0 3
✅ nextjs-webpack-canary 49 0 3
✅ vite-stable 45 0 7
✅ 🪟 Windows
App Passed Failed Skipped
✅ nextjs-turbopack 49 0 3
❌ 🌍 Community Worlds
App Passed Failed Skipped
✅ mongodb-dev 3 0 0
❌ mongodb 48 1 3
✅ redis-dev 3 0 0
✅ redis 49 0 3
✅ 📋 Other
App Passed Failed Skipped
✅ e2e-local-prod-nest-stable 45 0 7

📋 View full workflow run

❌ Some E2E test jobs failed:

  • Vercel Prod: failure
  • Local Dev: failure
  • Local Prod: failure
  • Local Postgres: failure
  • Windows: success

Check the workflow run for details.

@johnlindquist
docs(testing): add Mux sidecar integration testing pattern
6a03e42 
Document the integration testing approach pioneered by Mux for testing
workflows end-to-end using a Vitest global setup that spawns a dev
server as a sidecar process.
@johnlindquist johnlindquist requested a review from a team as a code owner February 25, 2026 17:21
VaguelySerious
VaguelySerious approved these changes Feb 27, 2026
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LGTM. I was thinking it should be possible to eventually allow vitest to run a full workflow e2e on the local world, but we'd need to write an integration for it. For now, shipping these docs is a step in the right direction IMO

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