import tempfile
import unittest
from pathlib import Path

from src.upload_limits import validate_upload


class UploadLimitTests(unittest.TestCase):
    def test_accepts_expected_suffix_under_limit(self):
        with tempfile.TemporaryDirectory() as tmp:
            path = Path(tmp) / "site.geojson"
            path.write_text("{}", encoding="utf-8")
            self.assertEqual(
                validate_upload(path, allowed_suffixes={".geojson"}, max_mb=1, label="GeoJSON"),
                path,
            )

    def test_rejects_wrong_suffix(self):
        with tempfile.TemporaryDirectory() as tmp:
            path = Path(tmp) / "site.txt"
            path.write_text("{}", encoding="utf-8")
            with self.assertRaisesRegex(ValueError, "GeoJSON must be"):
                validate_upload(path, allowed_suffixes={".geojson"}, max_mb=1, label="GeoJSON")

    def test_rejects_file_over_limit(self):
        with tempfile.TemporaryDirectory() as tmp:
            path = Path(tmp) / "site.geojson"
            path.write_bytes(b"x" * 2048)
            with self.assertRaisesRegex(ValueError, "Limit is 0 MB"):
                validate_upload(path, allowed_suffixes={".geojson"}, max_mb=0, label="GeoJSON")


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