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trex-core/tests/application/test_messaging_event_publisher.py
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Python

"""Slot transition event emission tests (REQ-021 + REQ-023 + REQ-018 hook)."""
from __future__ import annotations
import threading
import time
from datetime import date
from trex_core.adapters.broker.paper import PaperBroker
from trex_core.adapters.ledger.in_memory import InMemoryLedger
from trex_core.adapters.messaging import topology
from trex_core.adapters.messaging.in_memory import InMemoryTransport
from trex_core.adapters.persistence.in_memory_intent_store import InMemoryIntentStore
from trex_core.application.execution import ExecutionService
from trex_core.application.intents import BuyIntent, IntentService
from trex_core.application.ledger_outbox import InMemoryLedgerOutbox, LedgerWriter
from trex_core.application.messaging_handlers import slot_transition_event_payload
from trex_core.domain.slot import SlotService, SlotState
from trex_core.domain.slot.in_memory_repository import InMemorySlotRepository
DAY = date(2026, 6, 5)
def _wire(transport):
repo = InMemorySlotRepository()
svc = SlotService(repo)
intents = IntentService(svc, repo, InMemoryIntentStore())
outbox = InMemoryLedgerOutbox()
ledger = InMemoryLedger()
writer = LedgerWriter(outbox, ledger)
svc.preallocate_daily_slots(DAY, 3)
def emitter(event_type: str, slot) -> None:
rk = topology.event_routing_key(event_type, slot.strategy_id or "_", slot.symbol or "_")
payload = slot_transition_event_payload(slot, event_type=event_type)
try:
transport.publish_event(rk, payload)
except Exception: # noqa: BLE001
pass
execution = ExecutionService(svc, repo, PaperBroker(fill_after_polls=0),
ledger_outbox=outbox, event_emitter=emitter)
return repo, svc, intents, execution, writer
def test_fill_emits_slot_filled_event_with_routing_key_and_state():
transport = InMemoryTransport()
received: list[tuple[str, dict]] = []
stop = threading.Event()
th = threading.Thread(
target=transport.consume_events_forever,
args=("trex.events.strategy.A", topology.strategy_event_binding_pattern("A"),
lambda rk, p: received.append((rk, p)), stop),
daemon=True,
)
th.start()
time.sleep(0.05)
repo, _, intents, execution, _ = _wire(transport)
intents.submit_buy(BuyIntent(
intent_id="b1", trading_date=DAY, symbol="005930", qty=10,
strategy_id="A", portfolio_id="PF-1",
))
execution.run_once()
time.sleep(0.05)
stop.set()
th.join(timeout=1.0)
assert len(received) == 1
rk, payload = received[0]
assert rk == "slot_filled_buy.A.005930"
# payload carries current state + monotonic sequence (REQ-023 AC-5)
assert payload["event_type"] == "slot_filled_buy"
assert payload["status"] == SlotState.HOLDING.value
assert payload["strategy_id"] == "A"
assert payload["symbol"] == "005930"
assert "sequence_at" in payload # last-wins ordering token
def test_event_for_strategy_a_does_not_reach_strategy_b_queue():
"""REQ-021 AC-4: per-strategy routing key binding filters at the broker."""
transport = InMemoryTransport()
received_a: list[tuple[str, dict]] = []
received_b: list[tuple[str, dict]] = []
stop = threading.Event()
th_a = threading.Thread(
target=transport.consume_events_forever,
args=("q.A", topology.strategy_event_binding_pattern("A"),
lambda rk, p: received_a.append((rk, p)), stop),
daemon=True,
)
th_b = threading.Thread(
target=transport.consume_events_forever,
args=("q.B", topology.strategy_event_binding_pattern("B"),
lambda rk, p: received_b.append((rk, p)), stop),
daemon=True,
)
th_a.start()
th_b.start()
time.sleep(0.05)
_, _, intents, execution, _ = _wire(transport)
intents.submit_buy(BuyIntent(
intent_id="b1", trading_date=DAY, symbol="005930", qty=10,
strategy_id="A", portfolio_id="PF-1",
))
execution.run_once()
time.sleep(0.05)
stop.set()
th_a.join(timeout=1.0)
th_b.join(timeout=1.0)
assert any(rk == "slot_filled_buy.A.005930" for rk, _ in received_a)
assert received_b == []
def test_publish_failure_does_not_break_execution_loop():
"""Publish errors must NOT roll back slot transitions or ledger enqueue."""
transport = InMemoryTransport()
transport.set_available(False) # all publishes will raise TransportUnavailableError
repo, _, intents, execution, _ = _wire(transport)
intents.submit_buy(BuyIntent(
intent_id="b1", trading_date=DAY, symbol="005930", qty=10,
strategy_id="A", portfolio_id="PF-1",
))
r = execution.run_once()
# Slot still transitioned; ledger still enqueued.
assert r.filled == 1
assert r.ledger_enqueued == 1
pending = [s for s in repo.list_slots(DAY) if s.status is SlotState.HOLDING]
assert len(pending) == 1