fix: unit test refactoring with conftest and more mocks

ref: N25B-205

test/integration/conftest.py

@@ -0,0 +1,57 @@
+import sys
+from unittest.mock import MagicMock, AsyncMock
+
+class DummyCyclicBehaviour:
+    async def run(self):
+        pass
+
+    def kill(self):
+        self.is_killed = True
+        return None
+
+class DummyAgent:
+    def __init__(self, jid=None, password=None, *_, **__):
+        self.jid = jid
+        self.password = password
+        self.behaviours = []
+
+    async def start(self):
+        return AsyncMock()
+
+    def add_behaviour(self, behaviour):
+        behaviour.agent = self
+        self.behaviours.append(behaviour)
+
+    async def stop(self):
+        pass
+
+
+def pytest_configure(config):
+    """
+    This hook runs at the start of the pytest session, before any tests are
+    collected. It mocks heavy or unavailable modules to prevent ImportErrors.
+    """
+    # --- Mock spade and spade-bdi ---
+    mock_spade = MagicMock()
+    mock_spade.agent = MagicMock(Agent=DummyAgent)
+    mock_spade.behaviour = MagicMock(CyclicBehaviour=DummyCyclicBehaviour)
+    mock_spade_bdi = MagicMock()
+    mock_spade_bdi.bdi = MagicMock()
+
+    mock_spade.agent.Message = MagicMock()
+    
+    sys.modules["spade"] = mock_spade
+    sys.modules["spade.agent"] = mock_spade.agent
+    sys.modules["spade.behaviour"] = mock_spade.behaviour
+    sys.modules["spade_bdi"] = mock_spade_bdi
+    sys.modules["spade_bdi.bdi"] = mock_spade_bdi.bdi
+
+    # --- Mock the config module to prevent Pydantic ImportError ---
+    mock_config_module = MagicMock()
+
+    # The code under test does `from ... import settings`, so our mock module
+    # must have a `settings` attribute. We'll make it a MagicMock so we can
+    # configure it later in our tests using mocker.patch.
+    mock_config_module.settings = MagicMock()
+
+    sys.modules["control_backend.core.config"] = mock_config_module