diff --git a/tests/dicts/test_get.py b/tests/dicts/test_get.py
index 54029dcf..84b0cdb0 100644
--- a/tests/dicts/test_get.py
+++ b/tests/dicts/test_get.py
@@ -14,9 +14,6 @@
 
 from . import common
 
-if typing.TYPE_CHECKING:
-    import pathlib
-
 
 DATASETS: list[tuple[typing.Any, dict[str, typing.Any]]] = [
     (obj, data) for _, obj, data in common.collect_data("get")
diff --git a/tests/dicts/test_merge.py b/tests/dicts/test_merge.py
index cb0d0151..e6d7723a 100644
--- a/tests/dicts/test_merge.py
+++ b/tests/dicts/test_merge.py
@@ -15,10 +15,6 @@
 from . import common
 
 
-if typing.TYPE_CHECKING:
-    import pathlib
-
-
 DATASETS: list[tuple[typing.Any, dict[str, typing.Any]]] = [
     (obj, data) for _, obj, data in common.collect_data("merge")
 ]
diff --git a/tests/parsers/test_utils.py b/tests/parsers/test_utils.py
index 9e460cbc..e80c8dee 100644
--- a/tests/parsers/test_utils.py
+++ b/tests/parsers/test_utils.py
@@ -19,7 +19,7 @@
 from anyconfig.backend.json import PARSERS as JSON_PSR_CLSS
 
 
-PSRS =anyconfig.parsers.parsers.Parsers().list()
+PSRS = anyconfig.parsers.parsers.Parsers().list()
 JSON_PSRS = sorted(
     (p() for p in JSON_PSR_CLSS),
     key=operator.methodcaller("priority"), reverse=True
diff --git a/tests/processors/test_utils.py b/tests/processors/test_utils.py
index 029487f4..8b0fa6e9 100644
--- a/tests/processors/test_utils.py
+++ b/tests/processors/test_utils.py
@@ -30,7 +30,7 @@
     (([], []),
      (((["a"], 1), ), [("a", [1])]),
      (((["a", "aaa"], 1), (["b", "bb"], 2), (["a"], 3)),
-       [("a", [1, 3]), ("aaa", [1]), ("b", [2]), ("bb", [2])])
+      [("a", [1, 3]), ("aaa", [1]), ("b", [2]), ("bb", [2])])
      ),
 )
 def test_select_by_key(
@@ -63,8 +63,10 @@ def sfn(itr):
      (([AI0], "type"), [(AI0.type(), [AI0])]),
      (([AI0], "extensions"), [(x, [AI0]) for x in AI0.extensions()]),
      (((AI0, AI2, AI3), "type"), [(AI0.type(), [AI3, AI2, AI0])]),
-     (([AI0, BI0, CI0], "type"), [(AI0.type(), [AI0]), (BI0.type(), [BI0, CI0])]),
-     ((PRS, "type"), [(AI0.type(), [AI3, AI2, AI0]), (BI0.type(), [BI0, CI0])]),
+     (([AI0, BI0, CI0], "type"),
+      [(AI0.type(), [AI0]), (BI0.type(), [BI0, CI0])]),
+     ((PRS, "type"),
+      [(AI0.type(), [AI3, AI2, AI0]), (BI0.type(), [BI0, CI0])]),
      ((PRS, "extensions"),
       [("js", [AI3, AI2, AI0]), ("json", [AI3, AI2, AI0]),
        ("jsn", [AI3, AI2, AI0]), ("yaml", [BI0, CI0]), ("yml", [BI0, CI0])]),
@@ -73,7 +75,7 @@ def sfn(itr):
 def test_list_by_x(
     items: collections.abc.Iterable, exp: collections.abc.Iterable
 ) -> None:
-    assert  sorted(TT.list_by_x(*items)) == sorted(exp)
+    assert sorted(TT.list_by_x(*items)) == sorted(exp)
 
 
 def test_list_by_x_ng_cases():
@@ -176,6 +178,7 @@ def test_find_by_fileext_ng_cases():
 def test_find_by_maybe_file(objs, exp):
     assert TT.find_by_maybe_file(*objs) == exp
 
+
 @pytest.mark.parametrize(
     ("obj", ),
     (("/tmp/x.xyz", ),
diff --git a/tests/test_singleton.py b/tests/test_singleton.py
index 36b1bca9..2088a5be 100644
--- a/tests/test_singleton.py
+++ b/tests/test_singleton.py
@@ -21,6 +21,7 @@ class B(TT.Singleton):
     assert b1 is b2
     assert a1 is not b1
 
+
 def test_descendants() -> None:
     class A(TT.Singleton):
         pass
@@ -31,6 +32,7 @@ class A2(A):
     (a1, a2) = (A(), A2())
     assert a1 is a2
 
+
 def test_mixins() -> None:
     class Base:
         pass