Add GitHub Workflow: pytest.

Author: samsrabin

.github/workflows/pytest.yml

@@ -0,0 +1,51 @@
+name: Run Tests
+
+on:
+  pull_request:
+    branches:
+      - main
+  push:
+    branches:
+      - main
+
+jobs:
+  test:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+        python-version: ['3.9', '3.10', '3.11', '3.12']
+      fail-fast: false
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v5
+      with:
+        python-version: ${{ matrix.python-version }}
+        cache: 'pip'
+
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install pytest
+
+    - name: Run tests
+      run: |
+        pytest tests/ -v
+
+    - name: Run tests with coverage
+      if: matrix.python-version == '3.11' && matrix.os == 'ubuntu-latest'
+      run: |
+        pip install pytest-cov
+        pytest tests/ --cov=. --cov-report=xml --cov-report=term
+
+    - name: Upload coverage reports
+      if: success() && matrix.python-version == '3.11' && matrix.os == 'ubuntu-latest'
+      uses: codecov/codecov-action@v4
+      with:
+        file: ./coverage.xml
+        fail_ci_if_error: false
+      continue-on-error: true