from __future__ import annotations

import unittest

from agent_harness.llm_localization import LocalizationError, parse_selection


class LocalizationParsingTests(unittest.TestCase):
    def test_parses_valid_selection(self) -> None:
        response = {
            "choices": [
                {
                    "message": {
                        "content": '{"files":["shells/abstract.go"],"reasoning":"checkout"}'
                    }
                }
            ]
        }
        value = parse_selection(response, {"shells/abstract.go"})
        self.assertEqual(value["files"], ["shells/abstract.go"])

    def test_rejects_path_outside_candidates(self) -> None:
        response = {
            "choices": [
                {"message": {"content": '{"files":["gold.go"],"reasoning":"guess"}'}}
            ]
        }
        with self.assertRaises(LocalizationError):
            parse_selection(response, {"candidate.go"})


if __name__ == "__main__":
    unittest.main()