wrolpi/.github/workflows/jest-tests.yml
Roland fb4677bcd6
ci: a named check for fixture drift, and run jest on pull requests again
Two gaps, one of them wide.

The contract tests added in c349e15c already ran inside `pytest -nauto`, but
fixture drift is silent by nature -- the frontend suite passes against a body the
API stopped sending -- so it deserves a check whose name says what broke.
`api-contract-tests` restores the same dependency cache as the other Python jobs,
skips the ffmpeg/catdoc install it does not need (verified), and runs the one
file, so it answers in under a minute instead of somewhere inside seventeen
hundred results.

The wide one: jest-tests.yml triggered on `pull_request: branches: [master]`, so
a pull request into anything else ran neither jest nor the webpack build.  The
entire Semantic UI to Mantine migration went in that way -- seventy-five files
across nine pull requests into feature/custom-theme, not one of which ran either.
The build step is the one that matters most: jest and tsc both pass on a named
import that does not exist and only webpack rejects it, which is exactly how a
broken Archive.js survived a "clean" run earlier in this migration.  The suite
did run on the branch after each merge, which is the wrong side of the merge to
learn about it.

`pull_request` is now unfiltered rather than listing branches, so the next
long-lived branch does not have to remember to add itself.  It stays
`pull_request`, not `pull_request_target`: a fork's run gets a read-only token
and no secrets, and this workflow interpolates no event data, so widening the
trigger adds no injection or exfiltration path.

Worth knowing separately: none of this gates anything.  master has no branch
protection and the only ruleset covers `release` (deletion, non-fast-forward), so
every check here is advisory.  That is a repository setting, and Roland's to make.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-08 18:05:08 -06:00

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YAML

name: Jest Tests
# `pull_request` is deliberately unfiltered. It was `branches: [master]`, which meant a pull
# request into anything else ran no jest and no webpack build -- so the entire Semantic UI to
# Mantine migration, seventy-five files of it, was reviewed and merged across nine pull requests
# into `feature/custom-theme` without either ever running on a single one of them. The build
# step matters most of all here: jest and tsc both pass on a named import that does not exist,
# and only webpack rejects it. The suite did run on the branch afterwards, which is the wrong
# side of the merge to find out.
on:
push:
branches: [master, feature/*]
pull_request:
jobs:
jest-tests:
runs-on: ubuntu-latest
defaults:
run:
working-directory: app
steps:
- name: Checkout repository
uses: actions/checkout@v4
- name: Setup Node.js
uses: actions/setup-node@v4
with:
node-version: '20.19'
cache: 'npm'
cache-dependency-path: app/package-lock.json
- name: Install dependencies
run: npm install
- name: Run Jest tests
run: CI=true npm test -- --watchAll=false --coverage --coverageReporters=text --coverageReporters=lcov
# Webpack build catches errors that Jest+Babel don't, e.g. named imports
# that resolve to `undefined` because the source module doesn't actually
# export that name (Babel turns these into runtime undefined; webpack
# rejects them at build time). GitHub Actions sets CI=true in every
# step's environment by default, which makes react-scripts treat any
# lint warning as a fatal error — so we override it here. The webpack
# build still fails on real errors (the goal of this step); only
# pre-existing lint warnings stop being blocking.
- name: Build app (catches missing imports etc.)
env:
CI: ''
run: npm run build
- name: Upload coverage report
uses: actions/upload-artifact@v4
with:
name: coverage-report
path: app/coverage
retention-days: 30