from unittest.mock import MagicMock

from backend.SQL_Agent import agent


def test_record_tenant_billing_updates_redis_hash(monkeypatch):
    mock_redis = MagicMock()
    monkeypatch.setattr(agent, "_get_billing_redis", lambda: mock_redis)

    agent.record_tenant_billing("tenant_ledger", input_tokens=1200, output_tokens=800)

    mock_redis.hincrby.assert_any_call("tenant_billing:tenant_ledger", "input_tokens", 1200)
    mock_redis.hincrby.assert_any_call("tenant_billing:tenant_ledger", "output_tokens", 800)
    mock_redis.hincrby.assert_any_call("tenant_billing:tenant_ledger", "total_tokens", 2000)
    assert mock_redis.hincrbyfloat.called