"""T4.1 Alpha 归因测试。

测试 AI Alpha 归因 Agent。
"""

import pytest

from app.services.alpha_attribution import attribute_alpha


class TestAttributeAlpha:
    """Alpha 归因测试。"""

    async def test_returns_dict(self):
        """返回归因结果字典。"""
        intervention = {"type": "hiring", "description": "引入资深 CTO", "date": "2025-01-15"}
        metric_changes = {"revenue_growth": 0.15, "product_velocity": 0.3}
        result = await attribute_alpha(intervention, metric_changes)
        assert isinstance(result, dict)

    async def test_empty_input(self):
        """空输入返回字典。"""
        result = await attribute_alpha({}, {})
        assert isinstance(result, dict)