Use tox for testing and CI

Far simpler. Especially to quickly run tests locally.

Author: Hugo Osvaldo Barrera

.github/workflows/tests.yml

@@ -9,22 +9,20 @@ jobs:
       matrix:
         os: [ubuntu-18.04, macOS-10.14]
         python: [ '3.5', '3.6', '3.7' ]
-        extras: [ "", "[images]" ]
-    name: python${{ matrix.python }} on ${{ matrix.os }} ${{ matrix.extras }}
+        variant: [ "py", "py-images" ]
+    name: python${{ matrix.python }} on ${{ matrix.os }} ${{ matrix.variant }}
     steps:
-      - uses: actions/checkout@master
-      - uses: actions/setup-python@v1
+      - uses: actions/checkout@v2
+      - uses: actions/setup-python@v2
         with:
           python-version: ${{ matrix.python }}
-          architecture: x64
-      - name: Install test dependencies
-        run: |
-          pip install --upgrade --no-cache-dir pipenv
-          pipenv install --dev
-          pipenv install .${{ matrix.extras }}
+      - name: Install test dependency
+        run: pip install tox codecov
       - name: Run tests
-        run: pipenv run pytest
+        run: tox
+        env:
+          TOXENV: ${{ matrix.variant }}
       - name: Report coverage
-        run: pipenv run codecov
+        run: codecov
         env:
           CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}

Pipfile

@@ -26,6 +26,7 @@
         "Programming Language :: Python :: 3.5",
         "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
+        "Programming Language :: Python :: 3.8",
         "Topic :: Multimedia :: Graphics",
         "Topic :: Software Development :: Libraries :: Python Modules",
     ],

setup.py

@@ -0,0 +1,16 @@
+[tox]
+envlist = {py35,py36,py37,py38}{,-images}
+skip_missing_interpreters = True
+
+[testenv]
+deps =
+  pytest
+  pytest-cov
+  images: Pillow
+commands = pytest --cov barcode
+usedevelop = True
+
+[flake8]
+exclude=.tox,build,.eggs
+application-import-names=barcode,tests
+import-order-style=smarkets