import unittest

from app.services.settings_service import _normalize_thread_count, resolve_thread_count


class SettingsServiceTests(unittest.TestCase):
    def test_normalize_thread_count_allows_values_above_256(self) -> None:
        self.assertEqual(512, _normalize_thread_count(512))

    def test_normalize_thread_count_rejects_non_positive_values(self) -> None:
        with self.assertRaises(ValueError):
            _normalize_thread_count(0)

    def test_resolve_thread_count_uses_large_node_override(self) -> None:
        payload = {
            "thread_count": 8,
            "node_thread_counts": {
                "mainland-controller-01": 512,
            },
        }

        resolved = resolve_thread_count(node_code="mainland-controller-01", settings_payload=payload)

        self.assertEqual(8, resolved["default_thread_count"])
        self.assertEqual(512, resolved["override_thread_count"])
        self.assertEqual(512, resolved["effective_thread_count"])
        self.assertEqual("node_override", resolved["source"])


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