GH workflow to run unit tests.

.github/workflows/test.yml

@@ -0,0 +1,31 @@
+name: Run tests
+
+on:
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  run-tests:
+    name: Run tests on ${{ matrix.os }}, python ${{ matrix.python-version }}
+
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      matrix:
+        os: [ubuntu-latest]
+        python-version: [3.8]
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up Python
+      uses: actions/setup-python@v4
+      with:
+        python-version: '3.x'
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install -r requirements.txt
+        pip install -r requirements-dev.txt
+    - name: Test with pytest
+      run: |
+        pytest .