# -*- coding: utf-8 -*-

import unittest
import warnings
from s3pathlib.metadata import warn_upper_case_in_metadata_key


class TestWarnUpperCaseInMetadataKey(unittest.TestCase):

    def test_warn_upper_case_in_metadata_key(self):
        with self.assertRaises(Warning) as context:
            warn_upper_case_in_metadata_key(metadata={"Hello": "World"})
        self.assertTrue("Uppercase" in str(context.exception), "Expected warning not issued.")

if __name__ == "__main__":
    from s3pathlib.tests import run_cov_test

    run_cov_test(__file__, module="s3pathlib.metadata", preview=False)