Remove `python setup.py test` usage.

.github/workflows/test-package.yml

@@ -35,7 +35,7 @@ jobs:
 
     - name: Run tests
       run: |
-        coverage run --append --source=benedict setup.py test
+        coverage run --append --source=benedict -m unittest
         coverage xml -o ./coverage.xml
 
     - name: Upload coverage to Codecov

README.md

@@ -896,9 +896,6 @@ tox
 
 # or run tests using unittest
 python -m unittest
-
-# or run tests using setuptools
-python setup.py test
 ```
 
 ## License

setup.py

@@ -135,5 +135,4 @@ setup(
         "Topic :: Text Processing :: Markup :: XML",
         "Topic :: Utilities",
     ],
-    test_suite="tests",
 )

tox.ini

@@ -15,6 +15,6 @@ commands =
     pip install pip --upgrade
     pip install -r requirements.txt
     pip install -r requirements-test.txt
-    coverage run --append --source=benedict setup.py test
+    coverage run --append --source=benedict -m unittest
     coverage report -m
     codecov