Tests workflow (TorchIO-project/torchio)

The Tests workflow from TorchIO-project/torchio, explained and optimized by Latchkey.

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Source: TorchIO-project/torchio.github/workflows/tests.ymlLicense Apache-2.0View source

What it does

This is the Tests workflow from the TorchIO-project/torchio repository, a real project running GitHub Actions. It is shown here with attribution under its Apache-2.0 license.

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

The workflow

workflow (.yml)

name: Tests

on:
  push:
    branches:
      - main
  pull_request:
  workflow_dispatch:
  schedule:
    - cron: "0 4 * * *"

permissions:
  contents: read

env:
  FORCE_COLOR: 1

jobs:
  pytest:
    name: Unit tests
    strategy:
      matrix:
        os: [ubuntu-latest, macos-latest, windows-latest]
        python: ["3.10", "3.11", "3.12", "3.13", "3.14"]
      fail-fast: false

    runs-on: ${{ matrix.os }}
    env:
      OS: ${{ matrix.os }}

    steps:
      - name: Checkout repository
        uses: actions/checkout@v7
        with:
          fetch-depth: 0

      - name: Install the latest version of uv
        uses: astral-sh/setup-uv@v7

      - name: Install tox
        run: uv tool install --python ${{ matrix.python }} --with tox-uv tox

      - name: Add local bin to path on Windows
        if: runner.os == 'Windows'
        run: echo "C:/Users/runneradmin/.local/bin" >> $GITHUB_PATH
        shell: bash

      - name: Install ffmpeg for video tests
        if: runner.os == 'Linux'
        run: sudo apt-get update && sudo apt-get install -y ffmpeg

      - name: Setup test suite
        run: tox run -v --notest --skip-missing-interpreters false -e test

      # Run all tests on schedule, but only non-slow tests on push
      - name: Run pytest
        run: |
          if [ "${{ github.event_name }}" == "schedule" ]; then
            tox -e test
          else
            tox -e test -- -m "not slow"
          fi
        shell: bash # this wouldn't work on Powershell

      - name: Upload coverage reports to Codecov
        if: ${{ matrix.os == 'ubuntu-latest' && matrix.python == '3.14' }}
        uses: codecov/codecov-action@v7.0.0
        env:
          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}

  cli:
    name: CLI smoke tests
    runs-on: ubuntu-latest

    steps:
      - name: Checkout repository
        uses: actions/checkout@v7
        with:
          fetch-depth: 0

      - name: Install uv
        uses: astral-sh/setup-uv@v7

      - name: Test transforms CLI tool
        run: uv run -- torchio transform --help

      - name: Test info CLI tool
        run: uv run -- torchio info --help

  docs:
    name: Documentation snippet tests
    runs-on: ubuntu-latest
    if: github.event_name == 'schedule' || github.event_name == 'workflow_dispatch'

    steps:
      - name: Checkout repository
        uses: actions/checkout@v7
        with:
          fetch-depth: 0

      - name: Install uv
        uses: astral-sh/setup-uv@v7

      - name: Install tox
        run: uv tool install --with tox-uv tox

      - name: Run doc snippet tests
        run: tox -e docs-test

The same workflow, on Latchkey

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

name: Tests
 
on:
  push:
    branches:
      - main
  pull_request:
  workflow_dispatch:
  schedule:
    - cron: "0 4 * * *"
 
permissions:
  contents: read
 
env:
  FORCE_COLOR: 1
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  pytest:
    timeout-minutes: 30
    name: Unit tests
    strategy:
      matrix:
        os: [ubuntu-latest, macos-latest, windows-latest]
        python: ["3.10", "3.11", "3.12", "3.13", "3.14"]
      fail-fast: false
 
    runs-on: ${{ matrix.os }}
    env:
      OS: ${{ matrix.os }}
 
    steps:
      - name: Checkout repository
        uses: actions/checkout@v7
        with:
          fetch-depth: 0
 
      - name: Install the latest version of uv
        uses: astral-sh/setup-uv@v7
 
      - name: Install tox
        run: uv tool install --python ${{ matrix.python }} --with tox-uv tox
 
      - name: Add local bin to path on Windows
        if: runner.os == 'Windows'
        run: echo "C:/Users/runneradmin/.local/bin" >> $GITHUB_PATH
        shell: bash
 
      - name: Install ffmpeg for video tests
        if: runner.os == 'Linux'
        run: sudo apt-get update && sudo apt-get install -y ffmpeg
 
      - name: Setup test suite
        run: tox run -v --notest --skip-missing-interpreters false -e test
 
      # Run all tests on schedule, but only non-slow tests on push
      - name: Run pytest
        run: |
          if [ "${{ github.event_name }}" == "schedule" ]; then
            tox -e test
          else
            tox -e test -- -m "not slow"
          fi
        shell: bash # this wouldn't work on Powershell
 
      - name: Upload coverage reports to Codecov
        if: ${{ matrix.os == 'ubuntu-latest' && matrix.python == '3.14' }}
        uses: codecov/codecov-action@v7.0.0
        env:
          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
 
  cli:
    timeout-minutes: 30
    name: CLI smoke tests
    runs-on: latchkey-small
 
    steps:
      - name: Checkout repository
        uses: actions/checkout@v7
        with:
          fetch-depth: 0
 
      - name: Install uv
        uses: astral-sh/setup-uv@v7
 
      - name: Test transforms CLI tool
        run: uv run -- torchio transform --help
 
      - name: Test info CLI tool
        run: uv run -- torchio info --help
 
  docs:
    timeout-minutes: 30
    name: Documentation snippet tests
    runs-on: latchkey-small
    if: github.event_name == 'schedule' || github.event_name == 'workflow_dispatch'
 
    steps:
      - name: Checkout repository
        uses: actions/checkout@v7
        with:
          fetch-depth: 0
 
      - name: Install uv
        uses: astral-sh/setup-uv@v7
 
      - name: Install tox
        run: uv tool install --with tox-uv tox
 
      - name: Run doc snippet tests
        run: tox -e docs-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.

2 third-party actions are referenced by a movable tag. Pin them 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 3 jobs (17 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 astral-sh/setup-uv codecov/codecov-action