name: Test

# Many build steps have their own caches, so each job has its own cache to improve subsequent build times.
# Build tools are configured to cache to node_modules/.cache, so they are cached independently of node_modules.
# Caches are saved every run (by keying on github.run_id), and the most recent available cache is loaded.
# See https://jongleberry.medium.com/speed-up-your-ci-and-dx-with-node-modules-cache-ac8df82b7bb0.

on:
  push:
    branches:
      - main
      - releases/staging
  pull_request:

jobs:
  lint:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - uses: ./.github/actions/setup
      - uses: ./.github/actions/cache-on-main
        with:
          path: node_modules/.cache
          key: ${{ runner.os }}-eslint-${{ github.run_id }}
          restore-keys: ${{ runner.os }}-eslint-
      - run: yarn lint
      - if: failure() && github.ref_name == 'main'
        uses: ./.github/actions/report
        with:
          name: Lint
          SLACK_WEBHOOK_URL: ${{ secrets.SLACK_TEST_REPORTER_WEBHOOK }}
  
  typecheck:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - uses: ./.github/actions/setup
      - uses: ./.github/actions/cache-on-main
        with:
          path: node_modules/.cache
          key: ${{ runner.os }}-tsc-${{ github.run_id }}
          restore-keys: ${{ runner.os }}-tsc-
      - run: yarn typecheck
      - if: failure() && github.ref_name == 'main'
        uses: ./.github/actions/report
        with:
          name: Typecheck
          SLACK_WEBHOOK_URL: ${{ secrets.SLACK_TEST_REPORTER_WEBHOOK }}

  deps-tests:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - uses: ./.github/actions/setup
      - run: yarn yarn-deduplicate --strategy=highest --list --fail
      - if: failure() && github.ref_name == 'main'
        uses: ./.github/actions/report
        with:
          name: Dependency checks
          SLACK_WEBHOOK_URL: ${{ secrets.SLACK_TEST_REPORTER_WEBHOOK }}

  unit-tests:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - uses: ./.github/actions/setup
      - uses: ./.github/actions/cache-on-main
        with:
          path: node_modules/.cache
          key: ${{ runner.os }}-jest-${{ github.run_id }}
          restore-keys: ${{ runner.os }}-jest-
      - run: yarn test --coverage --maxWorkers=100%
      - uses: codecov/codecov-action@v3
        with:
          token: ${{ secrets.CODECOV_TOKEN }}
          fail_ci_if_error: false
          flags: unit-tests
      - if: failure() && github.ref_name == 'main'
        uses: ./.github/actions/report
        with:
          name: Unit tests
          SLACK_WEBHOOK_URL: ${{ secrets.SLACK_TEST_REPORTER_WEBHOOK }}

  build-e2e:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - uses: ./.github/actions/setup
      - uses: ./.github/actions/cache-on-main
        with:
          path: node_modules/.cache
          key: ${{ runner.os }}-build-e2e-${{ github.run_id }}
          restore-keys: ${{ runner.os }}-build-e2e-
      - run: yarn build:e2e
        env:
          NODE_OPTIONS: "--max_old_space_size=4096"
      - uses: actions/upload-artifact@v3
        with:
          name: build-e2e
          path: build
          if-no-files-found: error

  # Allows for parallel re-runs of cypress tests without re-building.
  cypress-rerun:
    runs-on: ubuntu-latest
    steps:
      - run: exit 0

  cypress-test-matrix:
    needs: [build-e2e, cypress-rerun]
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        containers: [1, 2, 3, 4]
    steps:
      - uses: actions/checkout@v3
      - uses: ./.github/actions/setup
      - uses: ./.github/actions/cache-on-main
        with:
          path: /root/.cache/Cypress
          key: ${{ runner.os }}-cypress-${{ hashFiles('**/node_modules/cypress/package.json') }}
      - run: |
          yarn cypress install
          yarn cypress info

      - uses: actions/download-artifact@v3
        with:
          name: build-e2e
          path: build

      - uses: ./.github/actions/cache-on-main
        with:
          path: cache
          key: ${{ runner.os }}-hardhat-${{ hashFiles('hardhat.config.js') }}-${{ github.run_id }}
          restore-keys: ${{ runner.os }}-hardhat-${{ hashFiles('hardhat.config.js') }}-

      - uses: cypress-io/github-action@v4
        with:
          install: false
          record: true
          parallel: true
          start: yarn serve
          wait-on: 'http://localhost:3000'
          browser: electron
          group: e2e
          spec: ${{ github.ref_name == 'releases/staging' && 'cypress/{e2e,staging}/**/*.test.ts' || 'cypress/e2e/**/*.test.ts' }}
        env:
          CYPRESS_RECORD_KEY: ${{ secrets.CYPRESS_RECORD_KEY }}
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          COMMIT_INFO_BRANCH: ${{ github.event.pull_request.head.ref || github.ref_name }}
          COMMIT_INFO_MESSAGE: ${{ github.event.pull_request.title || github.event.head_commit.message }}
          COMMIT_INFO_AUTHOR: ${{ github.event.sender.login || github.event.head_commit.author.login }}
          # Cypress requires an email for filtering by author, but GitHub does not expose one.
          # GitHub's public profile email can be deterministically produced from user id/login.
          COMMIT_INFO_EMAIL: ${{ github.event.sender.id || github.event.head_commit.author.id }}+${{ github.event.sender.login || github.event.head_commit.author.login }}@users.noreply.github.com
          COMMIT_INFO_SHA: ${{ github.event.pull_request.head.sha || github.event.head_commit.sha }}
          COMMIT_INFO_TIMESTAMP: ${{ github.event.pull_request.updated_at || github.event.head_commit.timestamp }}
          CYPRESS_PULL_REQUEST_ID: ${{ github.event.pull_request.number }}
          CYPRESS_PULL_REQUEST_URL: ${{ github.event.pull_request.html_url }}
      - uses: codecov/codecov-action@v3
        with:
          token: ${{ secrets.CODECOV_TOKEN }}
          fail_ci_if_error: false
          flags: e2e-tests
      - if: failure() && github.ref_name == 'main'
        uses: ./.github/actions/report
        with:
          name: Cypress tests
          SLACK_WEBHOOK_URL: ${{ secrets.SLACK_TEST_REPORTER_WEBHOOK }}

  pre:
    if: ${{ github.ref_name == 'main' || github.ref_name == 'releases/staging' }}
    runs-on: ubuntu-latest
    steps:
      - uses: actions/github-script@v6.4.1
        with:
          script: |
            github.rest.repos.createCommitStatus({
              owner: context.repo.owner,
              repo: context.repo.repo,
              sha: context.sha,
              state: 'pending',
              context: 'Test / promotion',
              description: 'Running tests...',
              target_url: 'https://github.com/Uniswap/interface/actions/runs/' + context.runId
            })

  post:
    if: ${{ github.ref_name == 'main' || github.ref_name == 'releases/staging' }}
    needs: [pre, lint, typecheck, deps-tests, unit-tests, cypress-test-matrix]
    runs-on: ubuntu-latest
    steps:
      - uses: actions/github-script@v6.4.1
        with:
          script: |
            github.rest.repos.createCommitStatus({
              owner: context.repo.owner,
              repo: context.repo.repo,
              sha: context.sha,
              state: ${{ env.STATUS }} ? 'success' : 'failure',
              context: 'Test / promotion',
              description: ${{ env.STATUS }} ? 'All tests passed' : 'One or more tests failed and are blocking promotion',
              target_url: 'https://github.com/Uniswap/interface/actions/runs/' + context.runId
            })
        env:
          STATUS: |
            ${{ needs.lint.result == 'success' }} &&
            ${{ needs.typecheck.result == 'success' }} &&
            ${{ needs.deps-tests.result == 'success' }} &&
            ${{ needs.unit-tests.result == 'success' }} &&
            ${{ needs.cypress-test-matrix.result == 'success' }}
