How do I automate testing for Node affinity in GitHub Actions?

// Example GitHub Action to test Node Affinity

name: Node Affinity Test

on: [push]

jobs:
  test-node-affinity:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        node: [node1, node2, node3]  // Specify nodes for testing

    steps:
      - name: Checkout code
        uses: actions/checkout@v2

      - name: Set up Node.js
        uses: actions/setup-node@v2
        with:
          node-version: '14'

      - name: Run Tests
        run: |
          if [[ ${{ matrix.node }} == "node1" ]]; then
            echo "Running tests on Node 1";
            # Add your test commands here
          elif [[ ${{ matrix.node }} == "node2" ]]; then
            echo "Running tests on Node 2";
            # Add your test commands here
          else
            echo "Running tests on Node 3";
            # Add your test commands here
          fi