import pytest
import sys
import os

# Ensure project root is in path
sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), "..")))

import ai_client

def test_token_usage_tracking():
    ai_client.reset_session()
    # Mock an API response with token usage
    usage = {"prompt_tokens": 100, "candidates_tokens": 50, "total_tokens": 150}
    # This would test the internal accumulator in ai_client
    pass