Use tox to run linters too

Author: oschwald

.github/workflows/lint.yml

@@ -9,17 +9,40 @@ max-line-length = 88
 universal = 1
 
 [tox:tox]
-envlist = py36, py37, py38, py39, py310, mypy
+envlist = {py37,py38,py39,py310}-test,py310-{black,lint,flake8,mypy}
 
 [gh-actions]
 python =
     3.7: py37
     3.8: py38
     3.9: py39
-    "3.10": py310, mypy
+    "3.10": py310,black,lint,flake8,mypy
 
-[testenv]
+[testenv:{py37,py38,py39,py310}-test]
 deps =
-    pytest
     mocket
+    pytest
+
+    # explicitly require indirect dependency to fix build failure.
+    # This can be removed when aiohttp 3.9 is released.
+    charset-normalizer==2.1.1
 commands = pytest tests
+
+[testenv:py310-black]
+deps = black
+commands =  black --check --diff .
+
+[testenv:py310-lint]
+deps = pylint
+commands = pylint minfraud
+
+[testenv:py310-flake8]
+deps = flake8
+commands = flake8 minfraud
+
+[testenv:py310-mypy]
+deps =
+    mypy
+    types-requests
+    voluptuous-stubs
+commands = mypy minfraud tests