pr.ci.js.yml

# This workflow will do a clean install of node dependencies and run tests across different versions of node
# For more information see: https://help.github.com/actions/language-and-framework-guides/using-nodejs-with-github-actions

name: typescript / pr

on: pull_request

jobs:
  precheck:
    runs-on: ubuntu-22.04

    steps:
      - name: Checkout PR
        uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871
        with:
          fetch-depth: ${{ github.event_name == 'pull_request' && 2 || 0 }}

      - name: Get changed files
        id: changed-files
        run: |
          if ${{ github.event_name == 'pull_request' }}; then
              echo "changed_files=$(git diff --name-only --diff-filter=ACM -r HEAD^1 HEAD | xargs)" >> $GITHUB_OUTPUT
          else
              echo "changed_files=$(git diff --name-only --diff-filter=ACM ${{ github.event.before }} ${{ github.event.after }} | xargs)" >> $GITHUB_OUTPUT
          fi

      - name: Enable corepack to fix https://github.com/actions/setup-node/pull/901
        run: corepack enable yarn

      - name: Use Node.js LTS (20.x)
        uses: actions/setup-node@0a44ba7841725637a19e28fa30b79a866c81b0a6
        with:
          node-version: 20.x
          cache: 'yarn'

      - name: Install project dependencies
        run: corepack yarn install --immutable

      - name: Run exercism/typescript ci precheck (stub files, config integrity) for changed exercises
        run: corepack yarn node scripts/pr-check.mjs ${{ steps.changed-files.outputs.changed_files }}

  ci:
    runs-on: ubuntu-22.04

    strategy:
      matrix:
        node-version: [20.x, 22.x]

    steps:
      - name: Checkout PR
        uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871
        with:
          fetch-depth: ${{ github.event_name == 'pull_request' && 2 || 0 }}

      - name: Get changed files
        id: changed-files
        run: |
          if ${{ github.event_name == 'pull_request' }}; then
              echo "changed_files=$(git diff --name-only --diff-filter=ACM -r HEAD^1 HEAD | xargs)" >> $GITHUB_OUTPUT
          else
              echo "changed_files=$(git diff --name-only --diff-filter=ACM ${{ github.event.before }} ${{ github.event.after }} | xargs)" >> $GITHUB_OUTPUT
          fi

      - name: Enable corepack to fix https://github.com/actions/setup-node/pull/901
        run: corepack enable yarn

      - name: Use Node.js ${{ matrix.node-version }}
        uses: actions/setup-node@0a44ba7841725637a19e28fa30b79a866c81b0a6
        with:
          node-version: ${{ matrix.node-version }}
          cache: 'yarn'

      - name: Install project dependencies
        run: corepack yarn install --immutable

      - name: Run exercism/typescript ci (runs tests) for changed/added exercises
        run: corepack yarn node scripts/pr.mjs ${{ steps.changed-files.outputs.changed_files }}

  impersonate:
    # This job tries to run tests for the 'hello-world' exercise, but
    # simulating what would happen if a student runs the tests standalone.
    # We do this by removing all project files in the root.

    runs-on: ubuntu-22.04

    steps:
      - uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871
      - name: Enable corepack to fix https://github.com/actions/setup-node/pull/901
        run: corepack enable yarn

      - name: Use Node.js 20.x
        uses: actions/setup-node@0a44ba7841725637a19e28fa30b79a866c81b0a6
        with:
          node-version: 20.x
          cache: 'yarn'

      - name: Remove root project files
        run: rm -f package.json yarn.lock .yarnrc.yml

      - name: Move solution file so that tests pass
        working-directory: exercises/practice/hello-world
        run: |
          rm -f hello-world.ts
          cp ./.meta/proof.ci.ts hello-world.ts

      - name: Install project dependencies
        working-directory: exercises/practice/hello-world
        run: corepack yarn install --no-immutable

      - name: Run tests
        working-directory: exercises/practice/hello-world
        run: corepack yarn test