.github/workflows/test.yml

name: Test

on:
  push:
    branches:
      - main
  pull_request:

permissions:
  contents: read

env:
  FORCE_COLOR: 3

jobs:
  format:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          persist-credentials: false

      - name: Setup Node
        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
        with:
          node-version-file: ".nvmrc"
          cache: npm
          package-manager-cache: true

      - run: npm ci

      - run: npx eslint .

      - run: npx prettier --check .

      - run: npx tsc --noEmit

  lint:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          persist-credentials: false

      - name: Setup Node
        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
        with:
          node-version-file: ".nvmrc"
          cache: npm
          package-manager-cache: true

      - run: npm ci

      - run: npm run lint -- --fail-on-warnings

  test:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          persist-credentials: false

      - name: Setup Node
        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
        with:
          node-version-file: ".nvmrc"
          cache: npm
          package-manager-cache: true

      - run: npm ci

      - run: npm run unittest

  diff-build:
    if: github.event_name == 'pull_request'
    runs-on: ubuntu-latest

    concurrency:
      group: ${{ github.workflow }}-${{ github.event.pull_request.number }}-diff-build
      cancel-in-progress: true

    steps:
      - name: Determine base ref
        id: base
        run: |
          if [[ "$GITHUB_HEAD_REF" == "release" ]]; then
            VERSION=$(npm view @mdn/browser-compat-data version)
            echo "ref=v$VERSION" >> "$GITHUB_OUTPUT"
            echo "Comparing release branch against published v$VERSION"
          else
            echo "ref=$GITHUB_BASE_REF" >> "$GITHUB_OUTPUT"
            echo "Comparing against base branch: $GITHUB_BASE_REF"
          fi

      # Base

      - name: Checkout (base)
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          ref: ${{ steps.base.outputs.ref }}
          path: base
          persist-credentials: false

      - name: Checkout (PR)
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          path: pr
          persist-credentials: false

      - name: Setup Node
        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
        with:
          node-version-file: pr/.nvmrc
          cache: npm
          cache-dependency-path: |
            base/package-lock.json
            pr/package-lock.json
          package-manager-cache: true

      - name: Install
        run: |
          # sed command prefixes each line of output with [base] or [pr]
          cd base && npm ci | sed "s/^/[base] /" &
          cd pr && npm ci | sed "s/^/[pr] /" &
          wait

      - name: Format
        run: |
          # sed command prefixes each line of output with [base] or [pr]
          cd base/build && npx prettier --write . | sed "s/^/[base] /" &
          cd pr/build && npx prettier --write . | sed "s/^/[pr] /" &
          wait

      - name: Diff
        run: git diff --color=always --no-index base/build/ pr/build/ || true