tests: move to pytest

Author: azmeuk

setup.cfg

@@ -36,8 +36,6 @@ python_requires = >= 3.6
 install_requires =
   WTForms>=1.0.5,<3.1
   SQLAlchemy>=0.7.10,<2
-tests_require = coverage
-test_suite = tests.tests
 
 [flake8]
 # B = bugbear

tests/requirements.txt

@@ -2,9 +2,12 @@
 envlist = py36, py37, py38, py39, py310, style, docs
 
 [testenv]
+deps =
+  coverage
+  pytest
 setenv =
   PYTHONPATH = {toxinidir}:{toxinidir}/
-commands = python setup.py test
+commands = pytest
 
 [testenv:style]
 deps = pre-commit