Adds github workflow "runTests.yml" (#3)

Author: DrPaulSharp

.github/runTests.yml

@@ -0,0 +1,36 @@
+name: Run Unit Tests
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+concurrency:
+  group: ${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+jobs:
+  test:
+
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        version: ["3.9", "3.x"]
+
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - uses: actions/checkout@v3
+      - name: Set up Python version ${{ matrix.version }}
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.version }}
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -r requirements.txt
+      - name: Test with pytest
+        run: |
+          pip install pytest pytest-cov
+          pytest tests/ --cov=${{ github.event.repository.name }} --cov-report=html:htmlcov