type hint fixes for adaptive/tests/test_cquad.py

Author: basnijholt

adaptive/tests/test_cquad.py

@@ -1,6 +1,6 @@
 from functools import partial
 from operator import attrgetter
-from typing import Callable, List, Set, Union
+from typing import Callable, List, Set
 
 import numpy as np
 import pytest
@@ -19,7 +19,7 @@
 
 
 def run_integrator_learner(
-    f: Union[partial, Callable], a: int, b: int, tol: float, n: int
+    f: Callable, a: int, b: int, tol: float, n: int
 ) -> IntegratorLearner:
     learner = IntegratorLearner(f, bounds=(a, b), tol=tol)
     for _ in range(n):