Coverage (Browser tests) workflow (mozilla/pdf.js)
The Coverage (Browser tests) workflow from mozilla/pdf.js, explained and optimized by Latchkey.
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CI health: C - fair
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Grade your own workflow free or run it on Latchkey →What it does
This is the Coverage (Browser tests) workflow from the mozilla/pdf.js 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
workflow (.yml)
name: Coverage (Browser tests)
on:
push:
paths:
- 'gulpfile.mjs'
- 'external/**'
- 'src/**'
- 'test/images/**'
- 'test/pdfs/**'
- 'test/resources/**'
- 'test/*.css'
- 'test/driver.js'
- 'test/test.mjs'
- 'test/test_manifest.json'
- 'test/test_slave.html'
- 'web/**'
- '.github/workflows/coverage_browser_tests.yml'
branches:
- master
pull_request:
paths:
- 'gulpfile.mjs'
- 'external/**'
- 'src/**'
- 'test/images/**'
- 'test/pdfs/**'
- 'test/resources/**'
- 'test/*.css'
- 'test/driver.js'
- 'test/test.mjs'
- 'test/test_manifest.json'
- 'test/test_slave.html'
- 'web/**'
- '.github/workflows/coverage_browser_tests.yml'
branches:
- master
workflow_dispatch:
permissions:
contents: read
jobs:
test:
name: ${{ matrix.os }} / firefox
strategy:
fail-fast: false
matrix:
node-version: [lts/*]
os: [ubuntu-latest]
runs-on: ${{ matrix.os }}
environment: code-coverage
steps:
- name: Checkout repository
uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
with:
fetch-depth: 0
persist-credentials: false
- name: Use Node.js ${{ matrix.node-version }}
uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
with:
node-version: ${{ matrix.node-version }}
cache: 'npm'
- name: Install dependencies
run: npm ci
- name: Restore cached PDF files
uses: actions/cache/restore@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
with:
path: test/pdfs/*.pdf
key: cached-pdf-files-${{ hashFiles('test/pdfs/*.pdf') }}
restore-keys: |
cached-pdf-files-
enableCrossOsArchive: true
- name: Run browser tests with code coverage
run: npx gulp botbrowsertest --headless -j$(nproc) --coverage --coverage-output build/coverage/browser --noChrome
- name: Save cached PDF files
uses: actions/cache/save@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
with:
path: test/pdfs/*.pdf
key: cached-pdf-files-${{ hashFiles('test/pdfs/*.pdf') }}
enableCrossOsArchive: true
- name: Upload results to Codecov
uses: codecov/codecov-action@fb8b3582c8e4def4969c97caa2f19720cb33a72f # v7.0.0
with:
token: ${{ secrets.CODECOV_TOKEN }}
fail_ci_if_error: true
files: ./build/coverage/browser/lcov.info
flags: browsertest
name: codecov-umbrella
disable_search: true
disable_telem: true
verbose: true
The same workflow, on Latchkey
Removes redundant runs and caps runaway jobs. Added and changed lines are highlighted.
name: Coverage (Browser tests) on: push: paths: - 'gulpfile.mjs' - 'external/**' - 'src/**' - 'test/images/**' - 'test/pdfs/**' - 'test/resources/**' - 'test/*.css' - 'test/driver.js' - 'test/test.mjs' - 'test/test_manifest.json' - 'test/test_slave.html' - 'web/**' - '.github/workflows/coverage_browser_tests.yml' branches: - master pull_request: paths: - 'gulpfile.mjs' - 'external/**' - 'src/**' - 'test/images/**' - 'test/pdfs/**' - 'test/resources/**' - 'test/*.css' - 'test/driver.js' - 'test/test.mjs' - 'test/test_manifest.json' - 'test/test_slave.html' - 'web/**' - '.github/workflows/coverage_browser_tests.yml' branches: - master workflow_dispatch: permissions: contents: read concurrency: group: ${{ github.workflow }}-${{ github.ref }} cancel-in-progress: true jobs: test: timeout-minutes: 30 name: ${{ matrix.os }} / firefox strategy: fail-fast: false matrix: node-version: [lts/*] os: [ubuntu-latest] runs-on: ${{ matrix.os }} environment: code-coverage steps: - name: Checkout repository uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0 with: fetch-depth: 0 persist-credentials: false - name: Use Node.js ${{ matrix.node-version }} uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0 with: node-version: ${{ matrix.node-version }} cache: 'npm' - name: Install dependencies run: npm ci - name: Restore cached PDF files uses: actions/cache/restore@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0 with: path: test/pdfs/*.pdf key: cached-pdf-files-${{ hashFiles('test/pdfs/*.pdf') }} restore-keys: | cached-pdf-files- enableCrossOsArchive: true - name: Run browser tests with code coverage run: npx gulp botbrowsertest --headless -j$(nproc) --coverage --coverage-output build/coverage/browser --noChrome - name: Save cached PDF files uses: actions/cache/save@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0 with: path: test/pdfs/*.pdf key: cached-pdf-files-${{ hashFiles('test/pdfs/*.pdf') }} enableCrossOsArchive: true - name: Upload results to Codecov uses: codecov/codecov-action@fb8b3582c8e4def4969c97caa2f19720cb33a72f # v7.0.0 with: token: ${{ secrets.CODECOV_TOKEN }} fail_ci_if_error: true files: ./build/coverage/browser/lcov.info flags: browsertest name: codecov-umbrella disable_search: true disable_telem: true verbose: true
What changed
- 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.
What Latchkey heals here
This workflow has steps that commonly fail on transient issues (network, registries, flaky browsers). On Latchkey managed runners they are detected, retried, and self-healed instead of failing your build:
- Dependency installs
This workflow runs 1 job per trigger. On Latchkey the same minutes cost up to 58% less than GitHub-hosted, with zero queue time.