Codewalkers/.planning/phases/01.1-hexagonal-architecture/01.1-05-SUMMARY.md

phase, plan, subsystem, tags, requires, provides, affects, tech-stack, key-files, key-decisions, patterns-established, duration, completed

phase	plan	subsystem	tags	requires	provides	affects	tech-stack	key-files	key-decisions	patterns-established	duration	completed
01.1-hexagonal-architecture	05	server	vitest events eventbus server shutdown lifecycle testing	phase provides 01.1-01 EventBus port interface and domain events (ServerStartedEvent, ServerStoppedEvent)	Comprehensive CoordinationServer test coverage Server lifecycle event emission GracefulShutdown test coverage	01.1-06	added patterns event-driven-lifecycle optional-dependency-injection	created modified src/server/index.test.ts src/server/shutdown.test.ts src/server/index.ts	EventBus is optional parameter for backwards compatibility Events emitted before console.log in start(), before close in stop() Signal handler tests verify listener count increase rather than triggering signals	Optional eventBus injection pattern for lifecycle events Mock creation helper functions for consistent test setup	2min	2026-01-30

Phase 1.1 Plan 05: Server Tests and Events Summary

Comprehensive server test coverage with lifecycle event emission through EventBus for reactive coordination patterns

Performance

• Duration: 2 min
• Started: 2026-01-30T13:01:10Z
• Completed: 2026-01-30T13:03:38Z
• Tasks: 2
• Files modified: 3

Accomplishments

• Comprehensive unit tests for CoordinationServer (lifecycle, HTTP endpoints, PID file management)
• Server emits ServerStarted and ServerStopped events through optional EventBus
• GracefulShutdown test coverage for shutdown() method and signal handler installation
• 16 new server tests + 6 shutdown tests = 22 new tests total

Task Commits

Each task was committed atomically:

1. Task 1: Write unit tests for CoordinationServer - ea79b3b (test)
2. Task 2: Add event emission to server and shutdown handler - 1f255ee (feat)

Files Created/Modified

• src/server/index.test.ts - CoordinationServer lifecycle, HTTP endpoint, PID file, and event emission tests
• src/server/shutdown.test.ts - GracefulShutdown shutdown() and install() tests
• src/server/index.ts - Added optional eventBus parameter, emit ServerStarted/ServerStopped events

Decisions Made

1. EventBus as optional parameter - Maintains backwards compatibility while enabling event-driven patterns
2. Events emitted at specific lifecycle points - ServerStarted after PID file written, ServerStopped before closing connections
3. Signal handler tests use listener count - Safer than triggering actual signals which could affect test runner

Deviations from Plan

None - plan executed exactly as written.

Issues Encountered

None

User Setup Required

None - no external service configuration required.

Next Phase Readiness

• Server module fully tested with event emission
• Event-driven lifecycle enables reactive patterns (dashboard updates, coordination)
• Ready for 01.1-06: Final integration and phase completion

---

Phase: 01.1-hexagonal-architecture Completed: 2026-01-30