Run Tests workflow (SearchSavior/OpenArc)

The Run Tests workflow from SearchSavior/OpenArc, explained and optimized by Latchkey.

What it does

This is the Run Tests workflow from the SearchSavior/OpenArc 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

name: Run Tests

on:
  pull_request:
    branches: [ main ]
  push:
    branches: [ main ]
  workflow_dispatch: {}

jobs:
  unit-tests:
    name: Run Unit Tests
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Install uv and Python
        uses: astral-sh/setup-uv@v5
        with:
          # Automatically installs the Python version specified in your pyproject.toml
          enable-cache: true

      - name: Sync dependencies
        run: |
          uv sync --frozen
          uv sync --group test --frozen

      
      - name: Run Unit Tests
        # run unit tests, ignore / silence python warnings
        run: uv run pytest -W ignore tests/unit

The same workflow, on Latchkey

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

name: Run Tests
 
on:
  pull_request:
    branches: [ main ]
  push:
    branches: [ main ]
  workflow_dispatch: {}
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  unit-tests:
    timeout-minutes: 30
    name: Run Unit Tests
    runs-on: latchkey-small
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
 
      - name: Install uv and Python
        uses: astral-sh/setup-uv@v5
        with:
          # Automatically installs the Python version specified in your pyproject.toml
          enable-cache: true
 
      - name: Sync dependencies
        run: |
          uv sync --frozen
          uv sync --group test --frozen
 
      
      - name: Run Unit Tests
        # run unit tests, ignore / silence python warnings
        run: uv run pytest -W ignore tests/unit
 
 

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• Cancel superseded runs when a branch or PR gets a newer push.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