test workflow (nakabonne/ali)

The test workflow from nakabonne/ali, explained and optimized by Latchkey.

What it does

This is the test workflow from the nakabonne/ali repository, a real project running GitHub Actions. It is shown here with attribution under its MIT license.

Below, Latchkey shows a faster, safer version produced by its optimization engine.

The workflow

name: test
on:
  push:
    branches:
    - master
    paths-ignore:
    - 'README.md'
    - '.github/'
    - 'images/'
  pull_request:
    branches:
    - master
    paths-ignore:
    - 'README.md'
    - '.github/'
    - 'images/'
jobs:
  test:
    strategy:
      matrix:
        platform: [ubuntu-latest, macos-latest]
    runs-on: ${{ matrix.platform }}
    steps:
    - name: Install Go
      uses: actions/setup-go@v4
      with:
        go-version: '1.24'
    - name: Checkout code
      uses: actions/checkout@v2
    - name: Build
      run: go build
    - name: Test
      run: make test
    - name: Upload coverage to Codecov
      uses: codecov/codecov-action@v2
      with:
        token: ${{ secrets.CODECOV_TOKEN }}
        file: ./coverage.txt

The same workflow, on Latchkey

Removes redundant runs and caps runaway jobs. Added and changed lines are highlighted.

name: test
on:
  push:
    branches:
    - master
    paths-ignore:
    - 'README.md'
    - '.github/'
    - 'images/'
  pull_request:
    branches:
    - master
    paths-ignore:
    - 'README.md'
    - '.github/'
    - 'images/'
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  test:
    timeout-minutes: 30
    strategy:
      matrix:
        platform: [ubuntu-latest, macos-latest]
    runs-on: ${{ matrix.platform }}
    steps:
    - name: Install Go
      uses: actions/setup-go@v4
      with:
        go-version: '1.24'
    - name: Checkout code
      uses: actions/checkout@v2
    - name: Build
      run: go build
    - name: Test
      run: make test
    - name: Upload coverage to Codecov
      uses: codecov/codecov-action@v2
      with:
        token: ${{ secrets.CODECOV_TOKEN }}
        file: ./coverage.txt
 

What changed

• Cancel superseded runs when a branch or PR gets a newer push.
• Add a job timeout so a hung step cannot burn hours of runner time.

1 third-party action is referenced by a movable tag. Pin it to the commit SHA (Latchkey resolves and applies this automatically) so a repointed tag cannot change what runs.

This workflow runs 1 job (2 with the matrix expanded) per trigger. On Latchkey the same minutes cost up to 58% less than GitHub-hosted, with zero queue time.

Actions used in this workflow