wx-cli/.gsd/milestones/M001/slices/S03/S03-SUMMARY.md

id	parent	milestone	provides	requires	affects	key_files	key_decisions	patterns_established	observability_surfaces	drill_down_paths	duration	verification_result	completed_at	blocker_discovered
S03	M001	M001	TCP client tested and verified with integration tests, ready for S04 side-by-side comparison	slice provides S01 slice provides S02	S04	src/cli/transport.rs src/cli/mod.rs src/daemon/mod.rs src/transport/mod.rs	(none)	multi_thread tokio test for blocking + async interop mock TCP server with stream.into_split() for independent read/write	none	.gsd/milestones/M001/slices/S03/tasks/T01-SUMMARY.md .gsd/milestones/M001/slices/S03/tasks/T02-SUMMARY.md		passed	2026-05-13T06:27:54.985Z	false

S03: TCP client + global --tcp flag

Integration tests verify TCP client send_tcp() and is_alive_tcp() with mock server; full test suite (35/35) and cross-platform compilation pass; --tcp flag confirmed in CLI help for both client and daemon commands

What Happened

T01 added a #[cfg(test)] integration_tests module to src/cli/transport.rs with three self-contained tests: (1) test_send_tcp_round_trip — spawns a tokio mock TCP server that echoes a JSON-line response, calls send_tcp() and asserts success; (2) test_send_tcp_connection_refused — asserts send_tcp() returns Err when no listener is on the target port; (3) test_is_alive_tcp_false — asserts is_alive_tcp() returns false for an unused port. All tests use #[tokio::test(flavor = "multi_thread")] to bridge blocking send_tcp() with async mock server. Mock server uses stream.into_split() for independent read/write halves.

T02 verified the full suite: cargo check passed (native), cargo test ran 35/35 tests (32 existing + 3 new), cargo check --target x86_64-pc-windows-msvc passed. CLI help confirmed --tcp flag visible for both wx (client) and wx daemon start (server) commands. No blockers discovered; no deviations from plan.

Verification

cargo test integration_tests -- --test-threads=1: all 3 tests passed (exit 0, 4120ms). cargo test: 35/35 passed (exit 0, 2070ms). cargo check: passed (exit 0). cargo check --target x86_64-pc-windows-msvc: passed (exit 0). wx --help and wx daemon start --help both show --tcp flag.

Requirements Advanced

None.

Requirements Validated

• R002 — send_tcp() and is_alive_tcp() validated by 3 integration tests (round-trip, connection refused, liveness) + 35/35 full suite pass + cross-platform compilation

New Requirements Surfaced

None.

Requirements Invalidated or Re-scoped

None.

Operational Readiness

None.

Deviations

None.

Known Limitations

None.

Follow-ups

None.

Files Created/Modified

None.