import pytest
from pytest_mock import MockerFixture

from src.index import handler


def test_handler_executes_transfer_and_preserves_event(mocker: MockerFixture) -> None:
    mock_execute = mocker.patch("src.index.execute_content_transfer")
    mock_execute.return_value = {
        "project_updated": 1,
        "releases_updated": 2,
        "video_rows_updated": 0,
    }

    result = handler(
        {
            "job_id": 42,
            "source_vendor_id": 10,
            "destination_vendor_id": 99,
        },
        object(),
    )

    assert result == {
        "job_id": 42,
        "source_vendor_id": 10,
        "destination_vendor_id": 99,
        "execute_content_transfer_result": {
            "project_updated": 1,
            "releases_updated": 2,
            "video_rows_updated": 0,
        },
    }
    mock_execute.assert_called_once_with(42)


def test_handler_raises_on_missing_job_id() -> None:
    with pytest.raises(KeyError):
        handler({}, object())


def test_handler_raises_on_invalid_job_id() -> None:
    with pytest.raises(ValueError, match="must be an integer"):
        handler({"job_id": "not-an-int"}, object())