Simple GitHub Actions setup

Modelled on https://github.com/peterjc/flake8-rst-docstrings

Closes #34.

.github/workflows/test.yml

@@ -0,0 +1,25 @@
+name: test
+
+on: [push, pull_request]
+
+jobs:
+  run-tests:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["3.6", "3.7", "3.8", "3.9", "3.10"]
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v2
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Install package
+      run: |
+        python setup.py install
+        flake8 --version
+    - name: Run tests
+      run: |
+        cd tests/
+        bash ./run_tests.sh

README.rst

@@ -10,6 +10,9 @@ flake8-black
 .. image:: https://results.pre-commit.ci/badge/github/peterjc/flake8-black/master.svg
    :target: https://results.pre-commit.ci/latest/github/peterjc/flake8-black/master
    :alt: pre-commit.ci status
+.. image:: https://img.shields.io/github/workflow/status/peterjc/flake8-black/test?logo=github-actions
+   :alt: GitHub workflow status
+   :target: https://github.com/peterjc/flake8-black/actions
 .. image:: https://img.shields.io/pypi/dm/flake8-black.svg
    :alt: PyPI downloads
    :target: https://pypistats.org/packages/flake8-black