GitHub Copilot Train-the-Trainer

End-to-end capstone for one endpoint

Session M6-02 | 3 hours

Session M6-02: Bounded End-to-End Capstone
GitHub Copilot Train-the-Trainer

One slice

Implement and review:

POST /api/bookmarks

Everything else is deferred.

Session M6-02: Bounded End-to-End Capstone
GitHub Copilot Train-the-Trainer

The result is a handoff

  • implementation-ready issue;
  • implemented patch;
  • executable test results;
  • review decision;
  • deferred scope and next action.
Session M6-02: Bounded End-to-End Capstone
GitHub Copilot Train-the-Trainer

Keep the boundary in the issue

Keep every scope decision in the accepted GitHub issue. Implement only
POST /api/bookmarks, use synthetic data, and keep the existing dependencies.

Stop if the work requires another endpoint, live data, deployment, tool
configuration, or a new dependency.

Session M6-02: Bounded End-to-End Capstone
GitHub Copilot Train-the-Trainer

Session M5-02 is an input

The accepted specification must separate:

Behavior Implementation constraint
Observable request and response rules Node.js, Express, in-memory storage
Validation and duplicate behavior Existing dependencies only
Acceptance scenarios Exact files and test command
Session M6-02: Bounded End-to-End Capstone
GitHub Copilot Train-the-Trainer

Issue trace

Every acceptance criterion maps to:

specification ID -> planned file -> executable test

If the issue adds behavior missing from the specification, revise the issue before
implementation.

Session M6-02: Bounded End-to-End Capstone
GitHub Copilot Train-the-Trainer

Scope guard

In scope:

  • create one bookmark;
  • validate the accepted fields;
  • reject a duplicate URL;
  • return the documented envelope and status.

Out of scope: authentication, persistence, other endpoints, deployment, and new
packages.

Session M6-02: Bounded End-to-End Capstone
GitHub Copilot Train-the-Trainer

When work is blocked

Use GitHub Copilot for the implementation.

Record the blocker and a request-changes or pause decision in the handoff.
Resume the work before claiming completion.

Session M6-02: Bounded End-to-End Capstone
GitHub Copilot Train-the-Trainer

Run the tests

npm test

The suite checks success, defaults, field validation, and duplicate URLs.

Session M6-02: Bounded End-to-End Capstone
GitHub Copilot Train-the-Trainer

Review and handover

Trace the change back to the specification. Review the diff, test output,
dependency change, and scope decisions in the issue. Record any deviation in the
handoff.

Record one decision: approve, request changes, or pause.

Session M6-02: Bounded End-to-End Capstone
GitHub Copilot Train-the-Trainer

Lab time plan

Phase Time
Accept the specification and scope 25 min
Write the issue and establish the baseline 25 min
Implement the accepted slice 35 min
Test, review, and hand off 35 min
Session M6-02: Bounded End-to-End Capstone