fix config in util tests

Author: ImogenBits

tests/test_util.py

@@ -4,7 +4,7 @@
 from pathlib import Path
 
 from algobattle.match import BaseConfig
-from algobattle.problem import Problem
+from algobattle.problem import MatchConfig, Problem
 from algobattle.battle import Battle, Iterated, Averaged
 from . import testsproblem
 
@@ -15,7 +15,7 @@ class Utiltests(unittest.TestCase):
     @classmethod
     def setUpClass(cls) -> None:
         """Set up a problem, default config, fight handler and get a file name not existing on the file system."""
-        cls.config = BaseConfig()
+        cls.config = BaseConfig(match=MatchConfig(problem="Test Problem"))
         cls.problem_path = Path(testsproblem.__file__).parent / "problem.py"
         cls.rand_file_name = str(random.randint(0, 2**80))
         while Path(cls.rand_file_name).exists():