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Generating PR Descriptions That Reviewers Love
Draft PR descriptions with Copilot — title, summary, test plan, screenshots, risk notes.
What You Will Learn
- Draft PR descriptions with Copilot.
- Include title, summary, test plan, risk notes.
- Use the GitHub Copilot PR helper.
- Avoid generic PR descriptions.
- Make reviewers' lives easier.
Why This Matters
A good PR description saves reviewers 15 minutes and prevents review cycles. Copilot can draft one in seconds — but you must add the parts Copilot can't infer: risk, test plan, screenshots.
Concept Explained
A great PR description has: clear title (Conventional Commits), summary of what and why, test plan, screenshots for UI changes, risk notes, breaking changes, related issues. Copilot drafts the summary; you add the rest.
How It Works
Open a PR on GitHub.com. The Copilot PR helper offers to summarize the changes. Or in VS Code, use the GitHub extension's PR view to generate a description from your commits and diff.
Step-by-Step Tutorial
1. Open PR
Push your branch. Open a PR on GitHub.com or in VS Code's PR view.2. Generate description
Click 'Copilot: Generate description' or use the equivalent button.3. Edit summary
Verify the 'what' and add the 'why' — Copilot infers 'what' from diff, not 'why'.4. Add test plan
Describe how you tested. List commands, manual steps, scenarios.5. Add risk and breaking changes
Note anything risky. Mark breaking changes explicitly.6. Add screenshots
For UI changes, paste before/after screenshots.Real-World Example
A team mandated test plans and risk notes in PRs. Copilot drafted the summary; devs added the test plan and risk. Review cycle time dropped 40% — reviewers had what they needed to evaluate confidently.
Example Prompts / Commands / Code
## Title
feat(auth): add JWT-based authentication
## Summary
Adds /login, /logout, /refresh endpoints using JWT (HS256, 1-hour expiry).
Adds dependency on jsonwebtoken.
## Test plan
- [x] Unit tests for token generation/validation
- [x] Integration tests for /login, /logout, /refresh
- [x] Manual test: expired token returns 401
- [x] Manual test: invalid signature returns 401
## Risk
- Medium: changes auth flow; existing sessions will be invalidated.
- Migration: run `node scripts/migrate-sessions.js` before deploy.
## Breaking changes
None — old session cookies still work for 7-day transition.
## Related
- Closes #142
- Depends on #145 (jsonwebtoken upgrade)
Common Mistakes
- Accepting Copilot's draft without adding the 'why' or test plan.
- Missing risk notes — reviewers want to know what could break.
- Skipping screenshots for UI changes.
- Forgetting to link related issues.
Best Practices
- Always add the 'why' — Copilot can't infer motivation.
- Include a test plan with checkboxes reviewers can verify.
- Note risk explicitly (low/medium/high) with mitigation.
- Mark breaking changes clearly with a migration plan.
- Link related issues and dependencies.
Troubleshooting
| Problem | How to Fix |
|---|---|
| Generated description is generic | Provide more context in commits — generic commits produce generic descriptions. |
| Missed breaking changes | Add a 'Breaking changes' section explicitly. Copilot may not detect them. |
Practical Exercise
Your Turn
Open a PR for a recent change. Generate the description with Copilot. Add a test plan and risk notes. Compare to a previous PR you wrote without Copilot — which would you rather review?
Key Takeaways
- Copilot drafts PR summaries from commits and diff.
- Always add the 'why' and test plan.
- Note risk explicitly with mitigation.
- Mark breaking changes with migration plan.
- Link related issues and dependencies.
Frequently Asked Questions
Can Copilot review PRs?
Does it work for draft PRs?
Further Reading
Official References
SEO Metadata
SEO title: Generating PR Descriptions That Reviewers Love
Meta description: Draft PR descriptions with Copilot — title, summary, test plan, screenshots, risk notes.
Primary keyword: generating pr descriptions that reviewers love
Secondary keywords: generating pr descriptions that reviewers love
Search intent: Informational
URL slug: /copilot-generating-pr-descriptions
Categories: AI Tools, GitHub Copilot
Tags: GitHub Copilot, Beginner, Pull Requests, PR Description, IMCSEIAN, Tutorial, IMCSEIAN
Featured image concept: IMCSEIAN lesson card for Generating PR Descriptions That Reviewers Love
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