GitHub Actions — Automated Testing

Dr. X wants to ensure changes don't break the pipeline. They set up GitHub Actions to automatically test every commit.

.github/workflows/test.yml:

name: Test Pipeline

on: [push, pull_request]

jobs:
  test:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - name: Set up Python
        uses: actions/setup-python@v4
        with:
          python-version: '3.9'
      - name: Install dependencies
        run: |
          pip install -r requirements.txt
      - name: Run tests
        run: |
          pytest tests/

Now, every push and PR triggers automated tests. If tests fail, the PR shows a ❌ and won't be merged until fixed.

flowchart LR
  A[Push to GitHub] --> B[GitHub Actions triggered]
  B --> C{Tests pass?}
  C -->|Yes ✓| D[Green checkmark]
  C -->|No ✗| E[Red X - Fix before merge]

  style D fill:#e6ffe6,stroke:#0a0
  style E fill:#ffe6e6,stroke:#f00