M3 implementada e backlog atualizado

RI/tests/unit/test_agent_runtime_channels.py

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+"""Channel adapters (EP-12-T02, README.md §3.3/§6.13)."""
+
+from __future__ import annotations
+
+from datetime import datetime
+
+import pytest
+
+from emcp_bus.agent_runtime.channels.base import ChannelRegistry, UnsupportedChannelError
+from emcp_bus.agent_runtime.channels.conversational import ConversationalChannelAdapter
+from emcp_bus.agent_runtime.dispatcher import DispatchResult
+from emcp_bus.orchestrator.nba_model import NBADecision
+
+
+def _nba(channel: str = "app") -> NBADecision:
+    return NBADecision(
+        decision_id="dec-1",
+        action="sales.customer.get",
+        capability_version="1.0.0",
+        subject_ref="subject:abc123",
+        channel=channel,
+        agent="engagement-assistant",
+        reason_codes=["ELIGIBLE"],
+        policy_context={},
+        expires_at=datetime(2026, 1, 1),
+    )
+
+
+def test_channel_registry_routes_to_the_matching_adapter() -> None:
+    registry = ChannelRegistry([ConversationalChannelAdapter()])
+
+    adapter = registry.adapter_for("app")
+
+    assert adapter.channel == "app"
+
+
+def test_channel_registry_fails_explicitly_for_an_unsupported_channel() -> None:
+    registry = ChannelRegistry([ConversationalChannelAdapter()])
+
+    with pytest.raises(UnsupportedChannelError):
+        registry.adapter_for("sms")
+
+
+async def test_conversational_adapter_reports_success() -> None:
+    adapter = ConversationalChannelAdapter()
+    dispatch_result = DispatchResult(
+        decision_id="dec-1",
+        action="sales.customer.get",
+        status="allowed",
+        structured_content={"ok": True},
+    )
+
+    delivery = await adapter.deliver(_nba(), dispatch_result)
+
+    assert delivery["status"] == "allowed"
+    assert delivery["channel"] == "app"
+
+
+async def test_conversational_adapter_reports_denial() -> None:
+    adapter = ConversationalChannelAdapter()
+    dispatch_result = DispatchResult(
+        decision_id="dec-1", action="sales.customer.get", status="denied", structured_content=None
+    )
+
+    delivery = await adapter.deliver(_nba(), dispatch_result)
+
+    assert delivery["status"] == "denied"