Tests: pretest/posttest workflow (enzymejs/enzyme)

The Tests: pretest/posttest workflow from enzymejs/enzyme, explained and optimized by Latchkey.

CI health: C - fair

Point runs-on at Latchkey and get run de-duplication, job timeouts, SHA-pinned actions, self-healing for flaky steps, and up to 58% lower cost, applied automatically.

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Source: enzymejs/enzyme.github/workflows/node-pretest.ymlLicense MITView source

What it does

This is the Tests: pretest/posttest workflow from the enzymejs/enzyme 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: pretest/posttest'

on: [pull_request, push]

jobs:
  pretest:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v3
      - uses: ljharb/actions/node/install@main
        with:
          skip-ls-check: true
      - run: sh install-relevant-react.sh
      - run: npx lerna bootstrap
      - run: npm run build
      - run: npm run pretest

  # posttest:
  #   runs-on: ubuntu-latest

  #   steps:
  #     - uses: actions/checkout@v3
  #     - uses: ljharb/actions/node/install@main
  #     - run: npm run build
  #     - run: npm run posttest

The same workflow, on Latchkey

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

name: 'Tests: pretest/posttest'
 
on: [pull_request, push]
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  pretest:
    timeout-minutes: 30
    runs-on: latchkey-small
 
    steps:
      - uses: actions/checkout@v3
      - uses: ljharb/actions/node/install@main
        with:
          skip-ls-check: true
      - run: sh install-relevant-react.sh
      - run: npx lerna bootstrap
      - run: npm run build
      - run: npm run pretest
 
  # posttest:
  #   runs-on: latchkey-small
 
  #   steps:
  #     - uses: actions/checkout@v3
  #     - uses: ljharb/actions/node/install@main
  #     - run: npm run build
  #     - run: npm run posttest

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Cancel superseded runs when a branch or PR gets a newer push.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.

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 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