wordpress/.github/workflows/reusable-test-gutenberg-build-process.yml

##
# A reusable workflow that tests the Gutenberg plugin build process when run within a wordpress-develop checkout.
##
name: Test the Gutenberg plugin Build Process

on:
  workflow_call:
    inputs:
      os:
        description: 'Operating system to run tests on'
        required: false
        type: 'string'
        default: 'ubuntu-latest'
      directory:
        description: 'Directory to run WordPress from. Valid values are `src` or `build`'
        required: false
        type: 'string'
        default: 'src'

env:
  GUTENBERG_DIRECTORY: ${{ inputs.directory == 'build' && 'build' || 'src' }}/wp-content/plugins/gutenberg
  PUPPETEER_SKIP_DOWNLOAD: ${{ true }}
  NODE_OPTIONS: '--max-old-space-size=8192'

jobs:
  # Verifies that installing npm dependencies and building the Gutenberg plugin works as expected.
  #
  # Performs the following steps:
  # - Checks out the repository.
  # - Checks out the Gutenberg plugin into the plugins directory.
  # - Sets up Node.js.
  # - Logs debug information about the GitHub Action runner.
  # - Installs Core npm dependencies.
  # - Installs Gutenberg npm dependencies.
  # - Runs the Gutenberg build process.
  # - Builds WordPress to run from the relevant location (src or build).
  # - Builds Gutenberg.
  # - Ensures version-controlled files are not modified or deleted.
  build-process-tests:
    name: Gutenberg running from ${{ inputs.directory }} / ${{ contains( inputs.os, 'macos-' ) && 'MacOS' || contains( inputs.os, 'windows-' ) && 'Windows' || 'Linux' }}
    runs-on: ${{ inputs.os }}
    timeout-minutes: 30

    steps:
      - name: Checkout repository
        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
        with:
          show-progress: ${{ runner.debug == '1' && 'true' || 'false' }}

      - name: Checkout Gutenberg plugin
        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
        with:
          repository: 'WordPress/gutenberg'
          path: ${{ env.GUTENBERG_DIRECTORY }}
          show-progress: ${{ runner.debug == '1' && 'true' || 'false' }}

      - name: Set up Node.js
        uses: actions/setup-node@39370e3970a6d050c480ffad4ff0ed4d3fdee5af # v4.1.0
        with:
          node-version-file: '.nvmrc'
          cache: npm
          cache-dependency-path: |
            package-lock.json
            ${{ env.GUTENBERG_DIRECTORY }}/package-lock.json

      - name: Log debug information
        run: |
          npm --version
          node --version
          curl --version
          git --version

      - name: Install Core Dependencies
        run: npm ci

      - name: Install Gutenberg Dependencies
        run: npm ci
        working-directory: ${{ env.GUTENBERG_DIRECTORY }}

      - name: Build Gutenberg
        run: npm run build
        working-directory: ${{ env.GUTENBERG_DIRECTORY }}

      - name: Build WordPress to run from ${{ inputs.directory }}
        run: npm run build${{ inputs.directory == 'src' && ':dev' || '' }}

      - name: Run Gutenberg build script after building Core to run from ${{ inputs.directory }}
        run: npm run build
        working-directory: ${{ env.GUTENBERG_DIRECTORY }}

      - name: Ensure version-controlled files are not modified or deleted during building
        run: git diff --exit-code