Add CI workflow to run tests

Author: hellerve

.github/workflows/ci.yml

@@ -0,0 +1,18 @@
+name: CI
+
+on:
+  push:
+    branches: [ main, master ]
+  pull_request:
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - uses: actions/setup-python@v4
+      with:
+        python-version: '3.x'
+    - name: Run tests
+      run: |
+        python -m unittest discover -v

.gitignore

@@ -0,0 +1,2 @@
+__pycache__/
+*.pyc