Added db_utils tests

CHANGELOG.md

@@ -13,6 +13,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Tool implementations without langchain or langgraph dependencies
 - CRUDs.
 - BlueNaas CRUD tools
+- Unit tests for database
 
 ### Fixed
 - Migrate LLM Evaluation logic to scripts and add tests

swarm_copy_tests/app/database/__init__.py

@@ -0,0 +1 @@
+"""Unit tests for database."""

swarm_copy_tests/app/database/test_db_utils.py

@@ -0,0 +1,97 @@
+import json
+from unittest.mock import AsyncMock, Mock, patch
+
+import pytest
+from fastapi import HTTPException
+
+from swarm_copy.app.database.db_utils import get_thread, save_history, get_history
+from swarm_copy.app.database.sql_schemas import Entity, Messages, Threads
+
+
+@pytest.mark.asyncio
+async def test_get_thread():
+    user_id = "0"
+    thread_id = "0"
+    mock_thread_result = Mock()
+    mock_scalars_return = Mock()
+    mock_thread = Mock()
+    mock_scalars_return.one_or_none.return_value = mock_thread
+    mock_thread_result.scalars.return_value = mock_scalars_return
+    mock_session = AsyncMock()
+    mock_session.execute.return_value = mock_thread_result
+    result = await get_thread(user_id=user_id, thread_id=thread_id, session=mock_session)
+    assert result == mock_thread
+
+
+@pytest.mark.asyncio
+async def test_get_thread_exception():
+    user_id = "0"
+    thread_id = "0"
+    mock_thread_result = Mock()
+    mock_scalars_return = Mock()
+    mock_scalars_return.one_or_none.return_value = None
+    mock_thread_result.scalars.return_value = mock_scalars_return
+    mock_session = AsyncMock()
+    mock_session.execute.return_value = mock_thread_result
+    with pytest.raises(HTTPException):
+        await get_thread(user_id=user_id, thread_id=thread_id, session=mock_session)
+
+
+@pytest.mark.parametrize("message_role,expected_entity,content", [
+    ('user', Entity.USER, False),
+    ('tool', Entity.TOOL, False),
+    ('assistant', Entity.AI_MESSAGE, True),
+    ('assistant', Entity.AI_TOOL, False)
+])
+@pytest.mark.asyncio
+async def test_save_history(message_role, expected_entity, content):
+    history = [{"role": message_role, "content": content}]
+    user_id, thread_id, offset = "test_user", "test_thread", 0
+
+    mock_session = AsyncMock()
+    mock_thread = AsyncMock()
+
+    async def mock_get_thread(**kwargs):
+        return mock_thread
+
+    with patch("swarm_copy.app.database.db_utils.get_thread", mock_get_thread):
+        await save_history(history, user_id, thread_id, offset, mock_session)
+
+    assert mock_session.add.called
+
+    called_with_param = mock_session.add.call_args[0][0]
+    assert isinstance(called_with_param, Messages)
+    assert called_with_param.order == 0
+    assert called_with_param.thread_id == thread_id
+    assert called_with_param.entity == expected_entity
+    assert called_with_param.content == json.dumps(history[0])
+
+    assert mock_session.commit.called
+
+
+@pytest.mark.asyncio
+async def test_save_history_exception():
+    history = [{"role": "bad role", "content": None}]
+    user_id, thread_id, offset = "test_user", "test_thread", 0
+
+    mock_session = AsyncMock()
+
+    with pytest.raises(HTTPException):
+        await save_history(history, user_id, thread_id, offset, mock_session)
+
+
+@pytest.mark.asyncio
+async def test_get_history():
+    msg1 = Mock()
+    msg1.content = json.dumps("message1")
+    msg2 = Mock()
+    msg2.content = json.dumps("message2")
+    mock_thread = AsyncMock()
+    messages = [msg1, msg2]
+
+    async def mock_messages():
+        return messages
+
+    mock_thread.awaitable_attrs.messages = mock_messages()
+    results = await get_history(mock_thread)
+    assert results == [json.loads(msg.content) for msg in messages]