printpdf 0.12.2

Rust library for reading and writing PDF files
Documentation 
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# HEADLESS END-TO-END TESTS FOR THE WASM DEMO.
#
# Builds the same artifact the GitHub Pages deploy ships (scripts/build-demo.sh),
# serves it, and drives the real UI in headless Chrome: boot the wasm module,
# render the HTML examples (fonts + images), download the produced PDF, re-upload
# it through the Parse & Edit tab (the exact flow that used to die with a font
# deserialization error on stale deploys), stamp a signature image, save again —
# failing on any scenario error or any browser console error. The downloaded
# PDFs are then validated with poppler, which shares no code with printpdf.
#
# tests/e2e/driver.mjs + scenarios.mjs are the same files you can run locally:
#   bash scripts/build-demo.sh
#   cd tests/e2e && npm i puppeteer-core && node driver.mjs \
#     --root ../.. --chrome "$(command -v google-chrome)" \
#     --scenarios ./scenarios.mjs --out /tmp/e2e-artifacts
name: Demo e2e (headless chrome)

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

permissions:
  contents: read

concurrency:
  group: demo-e2e-${{ github.ref }}
  cancel-in-progress: true

jobs:
  e2e:
    runs-on: ubuntu-latest
    timeout-minutes: 45
    steps:
      - uses: actions/checkout@v4
      - uses: dtolnay/rust-toolchain@stable
        with:
          targets: wasm32-unknown-unknown
      - name: Install wasm-pack (prebuilt)
        run: |
          set -euo pipefail
          curl -sL https://github.com/rustwasm/wasm-pack/releases/download/v0.13.1/wasm-pack-v0.13.1-x86_64-unknown-linux-musl.tar.gz \
            | tar xz --strip-components=1 -C /usr/local/bin --wildcards '*/wasm-pack'
          wasm-pack --version
      - name: Build the demo (wasm + default fonts)
        run: bash scripts/build-demo.sh
      - name: Install poppler + node deps
        run: |
          sudo apt-get update && sudo apt-get install -y poppler-utils
          cd tests/e2e && npm init -y >/dev/null && npm install --no-audit --no-fund puppeteer-core@24
      - name: Run e2e scenarios in headless Chrome
        run: |
          set -euo pipefail
          CHROME="$(command -v google-chrome || command -v google-chrome-stable || command -v chromium-browser)"
          echo "using chrome: $CHROME ($($CHROME --version))"
          cd tests/e2e
          node driver.mjs --root ../.. --chrome "$CHROME" \
            --scenarios ./scenarios.mjs --out "$RUNNER_TEMP/e2e-artifacts"
      - name: Validate downloaded PDFs with poppler
        run: |
          set -euo pipefail
          shopt -s nullglob
          found=0
          for f in "$RUNNER_TEMP"/e2e-artifacts/*; do
            file "$f" | grep -q "PDF document" || continue
            found=1
            echo "== $f"
            pdffonts "$f"
            pdftoppm -png -r 40 "$f" "$RUNNER_TEMP/e2e-artifacts/render-$(basename "$f")"
            pdftotext "$f" - | head -5
          done
          [ "$found" -eq 1 ] || { echo "::error::e2e produced no PDF downloads"; exit 1; }
      - name: Upload artifacts (screenshots, PDFs, console log)
        if: always()
        uses: actions/upload-artifact@v4
        with:
          name: demo-e2e-${{ github.sha }}
          path: ${{ runner.temp }}/e2e-artifacts/
          retention-days: 14