build 059.9: add websocket runtime protocols

app/tests/unit/market_data/acquisition/runtime/test_websocket_protocol.py

@@ -0,0 +1,66 @@
+# app/tests/unit/market_data/acquisition/runtime/test_websocket_protocol.py
+
+from __future__ import annotations
+
+from src.market_data.acquisition.runtime.websocket_protocol import (
+    WebSocketSessionProtocol,
+    WebSocketSubscriptionManagerProtocol,
+    WebSocketTransportProtocol,
+)
+
+
+class FakeWebSocketTransport:
+    async def connect(self) -> None:
+        return None
+
+    async def disconnect(self) -> None:
+        return None
+
+    async def send(self, message: str | bytes) -> None:
+        return None
+
+    async def receive(self) -> str | bytes:
+        return "{}"
+
+
+class FakeWebSocketSession:
+    @property
+    def is_connected(self) -> bool:
+        return True
+
+    async def start(self) -> None:
+        return None
+
+    async def stop(self) -> None:
+        return None
+
+
+class FakeWebSocketSubscriptionManager:
+    async def restore_subscriptions(self) -> None:
+        return None
+
+    async def clear_subscriptions(self) -> None:
+        return None
+
+
+def test_transport_implementation_satisfies_protocol() -> None:
+    assert isinstance(FakeWebSocketTransport(), WebSocketTransportProtocol)
+
+
+def test_session_implementation_satisfies_protocol() -> None:
+    assert isinstance(FakeWebSocketSession(), WebSocketSessionProtocol)
+
+
+def test_subscription_manager_implementation_satisfies_protocol() -> None:
+    assert isinstance(
+        FakeWebSocketSubscriptionManager(),
+        WebSocketSubscriptionManagerProtocol,
+    )
+
+
+def test_incomplete_transport_does_not_satisfy_protocol() -> None:
+    class IncompleteTransport:
+        async def connect(self) -> None:
+            return None
+
+    assert not isinstance(IncompleteTransport(), WebSocketTransportProtocol)