"""Tests for handle-error handler."""

import pytest
from pytest_mock import MockerFixture

from src.index import handler


def test_handler_patches_job_failed(mocker: MockerFixture) -> None:
    mock_patch = mocker.patch("src.index.patch_transfer_job")
    result = handler({"job_id": 42, "error": {"Cause": "boom"}}, object())
    assert result == {"statusCode": 200}
    mock_patch.assert_called_once_with(42, {"status": "FAILED", "failure_reason": "boom"})


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


def test_handler_raises_on_missing_error() -> None:
    with pytest.raises(ValueError, match="event\\['error'\\] must be an object"):
        handler({"job_id": 42}, object())


def test_handler_uses_error_name_when_cause_missing(mocker: MockerFixture) -> None:
    mock_patch = mocker.patch("src.index.patch_transfer_job")

    handler({"job_id": 42, "error": {"Error": "States.TaskFailed"}}, object())

    mock_patch.assert_called_once_with(
        42,
        {"status": "FAILED", "failure_reason": "States.TaskFailed"},
    )


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