test: cover chat core and session storage

tests/unit/test_chat_service.py

@@ -0,0 +1,57 @@
+import tempfile
+import unittest
+from pathlib import Path
+
+from javis.core.chat_service import ChatService
+from javis.memory.sqlite_store import SQLiteSessionStore
+from javis.providers.base import ChatMessage, LocalModelProvider
+
+
+class RecordingProvider:
+    name = "ollama"
+    model = "test-model"
+
+    def __init__(self) -> None:
+        self.calls: list[list[ChatMessage]] = []
+
+    def chat(self, messages: list[ChatMessage]) -> str:
+        self.calls.append(messages)
+        return f"Antwort {len(self.calls)}"
+
+
+class ChatServiceTests(unittest.TestCase):
+    def setUp(self) -> None:
+        self.temporary_directory = tempfile.TemporaryDirectory()
+        database = Path(self.temporary_directory.name) / "sessions.sqlite3"
+        self.provider = RecordingProvider()
+        self.service = ChatService(SQLiteSessionStore(database), self.provider)
+
+    def tearDown(self) -> None:
+        self.temporary_directory.cleanup()
+
+    def test_test_double_implements_provider_contract(self) -> None:
+        self.assertIsInstance(self.provider, LocalModelProvider)
+
+    def test_send_passes_and_persists_conversation_history(self) -> None:
+        session = self.service.new_session()
+
+        first = self.service.send(session.id, "Hallo")
+        second = self.service.send(session.id, "Und jetzt?")
+
+        self.assertEqual(first, "Antwort 1")
+        self.assertEqual(second, "Antwort 2")
+        self.assertEqual(len(self.provider.calls[1]), 3)
+        loaded = self.service.load_session(session.id)
+        self.assertEqual(
+            [message.content for message in loaded.messages],
+            [
+                "Hallo",
+                "Antwort 1",
+                "Und jetzt?",
+                "Antwort 2",
+            ],
+        )
+
+
+if __name__ == "__main__":
+    unittest.main()