xp-practices

# Extreme Programming (XP) Practices <default_to_action> When applying XP practices: 1. START with practices that give immediate value 2. BUILD supporting practices gradually 3. ADAPT to your context 4. MEASURE results **Core XP Practices (Prioritized):** | Practice | Start Here | Why First | |----------|------------|-----------| | TDD | ✅ Yes | Foundation for everything | | Continuous Integration | ✅ Yes | Fast feedback | | Pair Programming | ✅ Yes | Knowledge sharing | | Collective Ownership | After CI+TDD | Needs safety net | | Small Releases | After CI | Infrastructure dependent | **Pairing Quick Start:** ``` Driver-Navigator (Classic): - Driver: Writes code - Navigator: Reviews, thinks ahead - Rotate every 20-30 min Ping-Pong (with TDD): A: Write failing test B: Make test pass + refactor B: Write next failing test A: Make test pass + refactor ``` </default_to_action> ## Quick Reference Card ### When to Pair | Context | Pair? | Why | |---------|-------|-----| | Complex/risky code | ✅ Always | Needs multiple perspectives | | New technology | ✅ Always | Learning accelerator | | Onboarding | ✅ Always | Knowledge transfer | | Critical bugs | ✅ Always | Two heads better | | Simple tasks | ❌ Skip | Not worth overhead | | Research spikes | ❌ Skip | Pair to discuss findings | --- ## Agent Integration ```typescript // Agent-human pair testing const charter = "Test payment edge cases"; const tests = await Task("Generate Tests", { charter }, "qe-test-generator"); const reviewed = await human.review(tests); await Task("Implement", { tests: reviewed }, "qe-test-generator"); // Continuous integration with agents await Task("Risk Analysis", { prDiff }, "qe-regression-risk-analyzer"); await Task("Generate Tests", { changes: prDiff }, "qe-test-generator"); await Task("Execute Tests", { scope: 'affected' }, "qe-test-executor"); // Sustainable pace: agents handle grunt work const agentWork = ['regression', 'data-generation', 'coverage-analysis']; const humanWork = ['exploratory', 'risk-assessment', 'strategy']; ``` --- ## Agent Coordination Hints ### Memory Namespace ``` aqe/xp-practices/ ├── pairing-sessions/* - Pair/ensemble session logs ├── ci-metrics/* - CI health metrics ├── velocity/* - Team velocity data └── retrospectives/* - XP retrospective notes ``` ### Fleet Coordination ```typescript const xpFleet = await FleetManager.coordinate({ strategy: 'xp-workflow', agents: [ 'qe-test-generator', // TDD support 'qe-test-executor', // CI integration 'qe-code-reviewer' // Collective ownership ], topology: 'parallel' }); ``` --- ## Related Skills - [tdd-london-chicago](../tdd-london-chicago/) - TDD deep dive - [refactoring-patterns](../refactoring-patterns/) - Safe refactoring - [pair-programming](../pair-programming/) - AI-assisted pairing --- ## Remember **XP practices work as a system** - TDD enables collective ownership, CI enables small releases, pairing enables collective ownership. Don't cherry-pick randomly. **With Agents:** Pair humans with agents. Agents handle repetitive work (regression, data generation, coverage analysis), humans provide judgment and creativity.