Run Python unit tests workflow (bitkeks/python-netflow-v9-softflowd)

The Run Python unit tests workflow from bitkeks/python-netflow-v9-softflowd, explained and optimized by Latchkey.

CI health: C - fair

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Source: bitkeks/python-netflow-v9-softflowd.github/workflows/run_tests.ymlLicense MITView source

What it does

This is the Run Python unit tests workflow from the bitkeks/python-netflow-v9-softflowd 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: Run Python unit tests

on:
  push:
    branches: [ master, release ]
  pull_request:
  workflow_dispatch:

jobs:
  test-netflow:
    runs-on: ubuntu-20.04
    strategy:
      matrix:
        python:
          - "3.5.3"  # Debian Stretch
          - "3.7.3"  # Debian Buster
          - "3.9.2"  # Debian Bullseye
          - "3.11"   # Debian Bookworm uses 3.11.1, but it's in a newer pyenv release
    steps:
      - uses: actions/checkout@v3

      - name: Set up Python with pyenv
        uses: gabrielfalcao/pyenv-action@v11
        with:
          default: "${{ matrix.python }}"

      - name: Run Python unittests
        run: python3 -m unittest

The same workflow, on Latchkey

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

name: Run Python unit tests
 
on:
  push:
    branches: [ master, release ]
  pull_request:
  workflow_dispatch:
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  test-netflow:
    timeout-minutes: 30
    runs-on: latchkey-small
    strategy:
      matrix:
        python:
          - "3.5.3"  # Debian Stretch
          - "3.7.3"  # Debian Buster
          - "3.9.2"  # Debian Bullseye
          - "3.11"   # Debian Bookworm uses 3.11.1, but it's in a newer pyenv release
    steps:
      - uses: actions/checkout@v3
 
      - name: Set up Python with pyenv
        uses: gabrielfalcao/pyenv-action@v11
        with:
          default: "${{ matrix.python }}"
 
      - name: Run Python unittests
        run: python3 -m unittest

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Cancel superseded runs when a branch or PR gets a newer push.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 (4 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