Tests workflow (uncss/uncss)

The Tests workflow from uncss/uncss, explained and optimized by Latchkey.

CI health: C - fair

Run this on Latchkey for self-healing, caching, and up to 58% lower cost.

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Source: uncss/uncss.github/workflows/test.ymlLicense MITView source

What it does

This is the Tests workflow from the uncss/uncss 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

workflow (.yml)

name: Tests

on:
  push:
    branches:
      - master
      - "!dependabot/**"
  pull_request:
  workflow_dispatch:

env:
  FORCE_COLOR: 2
  NODE_COV: 18 # The Node.js version to run coveralls on

jobs:
  run:
    name: Node ${{ matrix.node }} on ${{ matrix.os }}
    runs-on: ${{ matrix.os }}

    strategy:
      fail-fast: false
      matrix:
        node: [12, 14, 16, 18]
        os: [ubuntu-latest, windows-latest]

    steps:
      - name: Clone repository
        uses: actions/checkout@v3
        with:
          persist-credentials: false

      - name: Set up Node.js
        uses: actions/setup-node@v3
        with:
          node-version: ${{ matrix.node }}
          cache: npm

      - name: Install npm dependencies
        run: npm ci

      - name: Run tests with coverage
        run: npm run cover
        if: "!startsWith(matrix.os, 'windows')"

      - name: Run tests
        run: npm run mocha
        if: startsWith(matrix.os, 'windows')

      - name: Run Coveralls
        uses: coverallsapp/github-action@v2
        if: startsWith(matrix.os, 'ubuntu') && matrix.node == env.NODE_COV
        with:
          github-token: "${{ secrets.GITHUB_TOKEN }}"

The same workflow, on Latchkey

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

name: Tests
 
on:
  push:
    branches:
      - master
      - "!dependabot/**"
  pull_request:
  workflow_dispatch:
 
env:
  FORCE_COLOR: 2
  NODE_COV: 18 # The Node.js version to run coveralls on
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  run:
    timeout-minutes: 30
    name: Node ${{ matrix.node }} on ${{ matrix.os }}
    runs-on: ${{ matrix.os }}
 
    strategy:
      fail-fast: false
      matrix:
        node: [12, 14, 16, 18]
        os: [ubuntu-latest, windows-latest]
 
    steps:
      - name: Clone repository
        uses: actions/checkout@v3
        with:
          persist-credentials: false
 
      - name: Set up Node.js
        uses: actions/setup-node@v3
        with:
          node-version: ${{ matrix.node }}
          cache: npm
 
      - name: Install npm dependencies
        run: npm ci
 
      - name: Run tests with coverage
        run: npm run cover
        if: "!startsWith(matrix.os, 'windows')"
 
      - name: Run tests
        run: npm run mocha
        if: startsWith(matrix.os, 'windows')
 
      - name: Run Coveralls
        uses: coverallsapp/github-action@v2
        if: startsWith(matrix.os, 'ubuntu') && matrix.node == env.NODE_COV
        with:
          github-token: "${{ secrets.GITHUB_TOKEN }}"

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.

What Latchkey heals here

This workflow has steps that commonly fail on transient issues (network, registries, flaky browsers). On Latchkey managed runners they are detected, retried, and self-healed instead of failing your build:

Dependency installs

This workflow runs 1 job (8 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

actions/checkout actions/setup-node