run tests in gha

Author: jkittner

.github/workflows/build.yml

@@ -50,6 +50,10 @@ jobs:
     - name: Pre-commit hooks
       run: |
         pre-commit run --all-files
+    - name: run tests
+      run: |
+        pip install --upgrade tox
+        tox -e py
     - name: Build assets
       run: circuitpython-build-bundles --filename_prefix ${{ steps.repo-name.outputs.repo-name }} --library_location .
     - name: Archive bundles

tox.ini

@@ -0,0 +1,13 @@
+# SPDX-FileCopyrightText: 2021 Jonas Kittner
+#
+# SPDX-License-Identifier: Unlicense
+[tox]
+envlist = py37
+
+[testenv]
+deps = -rrequirements-dev.txt
+
+commands =
+    coverage erase
+    coverage run -m pytest tests/
+    coverage report