Claude Code setups for testing

Example prompts

Concrete things you can type into Claude Code for testing. Each example uses a real skill, agent, slash command, hook, or MCP server listed below.

1. Generate tests for an untested module

   Use the test-gen skill to write Vitest tests for src/lib/billing.ts and target 90% branch coverage.

2. Enforce TDD with a hook

   Enable the tdd-guard hook, then implement POST /api/invoices — tests must exist before the implementation file is edited.

3. End-to-end test a checkout flow

   Use the Playwright MCP server to walk through /checkout and assert the confirmation page renders with the right order ID.

4. Re-run failing tests automatically on save

   Add the auto-test hook so the last failing spec re-runs whenever I edit the file under test.