Run Unit Test via Pytest workflow (giacomoferretti/whatsapp-backup-downloader-decryptor)

The Run Unit Test via Pytest workflow from giacomoferretti/whatsapp-backup-downloader-decryptor, explained and optimized by Latchkey.

What it does

This is the Run Unit Test via Pytest workflow from the giacomoferretti/whatsapp-backup-downloader-decryptor 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 Unit Test via Pytest

on: [push]

jobs:
  build:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        python-version: 
          - "3.9"
          - "3.10"
          - "3.11"
          - "3.12"
          - "3.13"

    steps:
      - uses: actions/checkout@v4

      - name: Install uv and set the python version
        uses: astral-sh/setup-uv@v5
        with:
          python-version: ${{ matrix.python-version }}

      - name: Install the project
        run: uv sync --locked --all-extras --dev

      - name: Run tests
        run: uv run pytest tests

The same workflow, on Latchkey

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

name: Run Unit Test via Pytest
 
on: [push]
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  build:
    timeout-minutes: 30
    runs-on: latchkey-small
    strategy:
      matrix:
        python-version: 
          - "3.9"
          - "3.10"
          - "3.11"
          - "3.12"
          - "3.13"
 
    steps:
      - uses: actions/checkout@v4
 
      - name: Install uv and set the python version
        uses: astral-sh/setup-uv@v5
        with:
          python-version: ${{ matrix.python-version }}
 
      - name: Install the project
        run: uv sync --locked --all-extras --dev
 
      - name: Run tests
        run: uv run pytest tests

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• Cancel superseded runs when a branch or PR gets a newer push.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 (5 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