First post of the year! I’ve been spending quite some time on my Advent of Code repository in December and decided I wanted to run the tests in a GitHub workflow. A short and sweet post about it.
The test suite is pretty slow though, since Advent of Code involves some brute-forcing exercises which take a long time to run. So the idea is to parallelize the tests so they don’t take as long.
I have 8 different folders: one folder per year since 2015. We can use a matrix to create multiple job runs in parallel.
strategy:
fail-fast: false
matrix:
year: [2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022]Then in our step, we can access the name of the job (and the name of our folder) and pass it to our npm test command (which uses Jest, or Mocha or Ava or whatever under the hood).
- name: Run tests
run: npm test -- ${{ matrix.year }}
That’s it, happy new year! ✨ You can check the code for the whole GitHub Workflow if you want.
name: Tests
on: [push]
jobs:
tests:
runs-on: ubuntu-latest
strategy:
fail-fast: false
matrix:
year: [2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022]
steps:
- name: Check out repository
uses: actions/checkout@v2
- name: Unlock input files
uses: sliteteam/github-action-git-crypt-unlock@1.2.0
env:
GIT_CRYPT_KEY: $
- name: Set up Node.js
uses: actions/setup-node@v2
with:
node-version: 18
cache: npm
- name: Install dependencies
run: npm ci
- name: Run tests
run: npm test -- $