Fix the CI and bump linters

Signed-off-by: Bernát Gábor <bgabor8@bloomberg.net>

.pre-commit-config.yaml

@@ -5,17 +5,17 @@ repos:
     -   id: black
         args: [--safe]
 -   repo: https://github.com/asottile/blacken-docs
-    rev: v1.8.0
+    rev: v1.9.2
     hooks:
     -   id: blacken-docs
         args: [--skip-errors]
-        additional_dependencies: [black==19.3b0]
+        additional_dependencies: [black==20.8b1]
 -   repo: https://github.com/PyCQA/isort
-    rev: 5.6.3
+    rev: 5.7.0
     hooks:
     -   id: isort
 -   repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v3.2.0
+    rev: v3.4.0
     hooks:
     -   id: trailing-whitespace
     -   id: end-of-file-fixer
@@ -25,18 +25,17 @@ repos:
   rev: 3.8.4
   hooks:
   - id: flake8
-    additional_dependencies: ["flake8-bugbear == 20.1.4"]
-    language_version: python3.8
+    additional_dependencies: ["flake8-bugbear == 20.11.1"]
 - repo: https://github.com/asottile/setup-cfg-fmt
-  rev: v1.15.0
+  rev: v1.16.0
   hooks:
   - id: setup-cfg-fmt
 -   repo: https://github.com/asottile/pyupgrade
-    rev: v2.7.2
+    rev: v2.9.0
     hooks:
     -   id: pyupgrade
 -   repo: https://github.com/pre-commit/pygrep-hooks
-    rev: v1.6.0
+    rev: v1.7.0
     hooks:
     -   id: rst-backticks
 - repo: https://github.com/tox-dev/tox-ini-fmt

setup.cfg

@@ -49,7 +49,6 @@ test =
     pytest>=4
     pytest-cov>=2.6
     mock;python_version<'3.3'
-    typing;python_version<'3.4'
 
 [options.package_data]
 * = *.pyi

src/attrs_strict/__init__.pyi

@@ -1,8 +1,6 @@
-from ._error import (
-    AttributeTypeError as AttributeTypeError,
-    BadTypeError as BadTypeError,
-    TupleError as TupleError,
-    TypeValidationError as TypeValidationError,
-    UnionError as UnionError,
-)
+from ._error import AttributeTypeError as AttributeTypeError
+from ._error import BadTypeError as BadTypeError
+from ._error import TupleError as TupleError
+from ._error import TypeValidationError as TypeValidationError
+from ._error import UnionError as UnionError
 from ._type_validation import type_validator as type_validator

src/attrs_strict/_error.pyi

@@ -1,6 +1,7 @@
+import inspect
 import typing
+
 import attr
-import inspect
 
 class TypeValidationError(Exception):
     def __repr__(self) -> str: ...

src/attrs_strict/_type_validation.pyi

@@ -1,4 +1,5 @@
 import typing
+
 import attr
 
 def resolve_types(

tests/test_container.py

@@ -76,8 +76,8 @@ def test_raises_when_container_is_empty_and_empty_ok_is_false():
         validator(None, attr, items)
 
     # THEN
-    assert "Smth can not be empty and must be str"
-    "(got None)" == str(error.value)
+    msg = "Smth can not be empty and must be {} (got [])".format(str)
+    assert msg == str(error.value)
 
 
 def test_no_type_specified_is_fine():