feat: add messaging transport rollout

tests/application/test_messaging_snapshot_consumer.py

@@ -0,0 +1,74 @@
+"""Snapshot RPC handler tests (REQ-021 AC-2, BAT-007 stub-shape)."""
+from __future__ import annotations
+
+from datetime import date
+
+from trex_core.adapters.persistence.in_memory_intent_store import InMemoryIntentStore
+from trex_core.application.intents import BuyIntent, IntentService
+from trex_core.application.messaging import RpcRequest
+from trex_core.application.messaging_handlers import make_snapshot_rpc_handler
+from trex_core.domain.slot import SlotService
+from trex_core.domain.slot.in_memory_repository import InMemorySlotRepository
+
+DAY = date(2026, 6, 5)
+
+
+def _wire():
+    repo = InMemorySlotRepository()
+    svc = SlotService(repo)
+    intents = IntentService(svc, repo, InMemoryIntentStore())
+    svc.preallocate_daily_slots(DAY, 3)
+    return repo, svc, intents
+
+
+def _req(view="all", strategy_id=None):
+    return RpcRequest(
+        payload={
+            "view": view,
+            "strategy_id": strategy_id,
+            "trading_date": DAY.isoformat(),
+        },
+        correlation_id="snap-cid",
+    )
+
+
+def test_snapshot_returns_all_slots_and_capacity():
+    repo, svc, intents = _wire()
+    intents.submit_buy(BuyIntent(
+        intent_id="b1", trading_date=DAY, symbol="005930", qty=10,
+        strategy_id="A",
+    ))
+    handler = make_snapshot_rpc_handler(repo, svc)
+    resp = handler(_req())
+    assert resp.payload["trading_date"] == DAY.isoformat()
+    assert resp.payload["view"] == "all"
+    assert len(resp.payload["slots"]) == 3  # all 3 slots returned
+    cap = resp.payload["capacity"]
+    assert cap["pending_count"] == 1 and cap["idle_count"] == 2
+
+
+def test_snapshot_open_view_filters_to_active_slots():
+    repo, svc, intents = _wire()
+    intents.submit_buy(BuyIntent(
+        intent_id="b1", trading_date=DAY, symbol="005930", qty=10, strategy_id="A",
+    ))
+    handler = make_snapshot_rpc_handler(repo, svc)
+    resp = handler(_req(view="open"))
+    statuses = {s["status"] for s in resp.payload["slots"]}
+    assert "idle" not in statuses
+    assert statuses == {"pending_buy"}
+
+
+def test_snapshot_strategy_id_filter():
+    repo, svc, intents = _wire()
+    intents.submit_buy(BuyIntent(
+        intent_id="b1", trading_date=DAY, symbol="005930", qty=10, strategy_id="A",
+    ))
+    intents.submit_buy(BuyIntent(
+        intent_id="b2", trading_date=DAY, symbol="000660", qty=5, strategy_id="B",
+    ))
+    handler = make_snapshot_rpc_handler(repo, svc)
+    resp = handler(_req(view="open", strategy_id="A"))
+    assert len(resp.payload["slots"]) == 1
+    assert resp.payload["slots"][0]["strategy_id"] == "A"
+    assert resp.payload["slots"][0]["symbol"] == "005930"