test workflow (d5/tengo)

The test workflow from d5/tengo, explained and optimized by Latchkey.

What it does

This is the test workflow from the d5/tengo 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 ]
  pull_request:
    branches: [ master ]
jobs:
  build:
    name: build
    runs-on: ubuntu-latest
    steps:
    - name: check out code
      uses: actions/checkout@v4
    - name: set up Go
      uses: actions/setup-go@v4
      with:
        go-version: 1.18
    - name: set up Go module cache
      uses: actions/cache@v4
      with:
        path: ~/go/pkg/mod
        key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
        restore-keys: |
          ${{ runner.os }}-go-
    - name: install golint
      run: go install golang.org/x/lint/golint@latest
    - name: run tests
      run: make test

The same workflow, on Latchkey

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

name: test
on:
  push:
    branches: [ master ]
  pull_request:
    branches: [ master ]
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  build:
    timeout-minutes: 30
    name: build
    runs-on: latchkey-small
    steps:
    - name: check out code
      uses: actions/checkout@v4
    - name: set up Go
      uses: actions/setup-go@v4
      with:
        go-version: 1.18
    - name: set up Go module cache
      uses: actions/cache@v4
      with:
        path: ~/go/pkg/mod
        key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
        restore-keys: |
          ${{ runner.os }}-go-
    - name: install golint
      run: go install golang.org/x/lint/golint@latest
    - name: run tests
      run: make test
 

What changed

• Run on Latchkey managed runners with one line (runs-on), which apply the fixes below automatically and self-heal transient failures. This example uses latchkey-small; pick the runner size that fits the job.
• Cancel superseded runs when a branch or PR gets a newer push.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.

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

Actions used in this workflow