Unit Tests workflow (PyLabRobot/pylabrobot)

The Unit Tests workflow from PyLabRobot/pylabrobot, explained and optimized by Latchkey.

CI health: C - fair

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Source: PyLabRobot/pylabrobot.github/workflows/test.ymlLicense MITView source

What it does

This is the Unit Tests workflow from the PyLabRobot/pylabrobot 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: Unit Tests

on:
  push:
    branches:
     - main
  pull_request:
  workflow_dispatch:

jobs:
  test-all:
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-latest]
        version: [3.9, "3.10", 3.11, 3.12, 3.13, 3.14]

    name: Tests (all, py${{ matrix.version }})
    runs-on: ${{ matrix.os }}

    steps:
      - name: Checkout Code
        uses: actions/checkout@v6
      - name: Run Tests
        uses: ./.github/actions/run-tests
        with:
          version: ${{ matrix.version }}
          extra: all

  test-extras:
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-latest]
        extra: ["<none>", serial, usb, ftdi, hid, modbus, opentrons, sila, microscopy, pico]

    name: Tests (${{ matrix.extra }}, py3.12)
    runs-on: ${{ matrix.os }}

    steps:
      - name: Checkout Code
        uses: actions/checkout@v6
      - name: Run Tests
        uses: ./.github/actions/run-tests
        with:
          version: "3.12"
          extra: ${{ matrix.extra }}

The same workflow, on Latchkey

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

name: Unit Tests
 
on:
  push:
    branches:
     - main
  pull_request:
  workflow_dispatch:
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  test-all:
    timeout-minutes: 30
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-latest]
        version: [3.9, "3.10", 3.11, 3.12, 3.13, 3.14]
 
    name: Tests (all, py${{ matrix.version }})
    runs-on: ${{ matrix.os }}
 
    steps:
      - name: Checkout Code
        uses: actions/checkout@v6
      - name: Run Tests
        uses: ./.github/actions/run-tests
        with:
          version: ${{ matrix.version }}
          extra: all
 
  test-extras:
    timeout-minutes: 30
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-latest]
        extra: ["<none>", serial, usb, ftdi, hid, modbus, opentrons, sila, microscopy, pico]
 
    name: Tests (${{ matrix.extra }}, py3.12)
    runs-on: ${{ matrix.os }}
 
    steps:
      - name: Checkout Code
        uses: actions/checkout@v6
      - name: Run Tests
        uses: ./.github/actions/run-tests
        with:
          version: "3.12"
          extra: ${{ matrix.extra }}

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.

This workflow runs 2 jobs (16 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