"""Tests for acme.util."""
import unittest
class MapKeysTest(unittest.TestCase):
"""Tests for acme.util.map_keys."""
def test_it(self):
from acme.util import map_keys
self.assertEqual({'a': 'b', 'c': 'd'},
map_keys({'a': 'b', 'c': 'd'}, lambda key: key))
self.assertEqual({2: 2, 4: 4}, map_keys({1: 2, 3: 4}, lambda x: x + 1))
if __name__ == '__main__':
unittest.main() # pragma: no cover