Spike: Investigate using parallel GitHub actions to speed up PR builds #3
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| name: Cypress E2E - NextJS | |
| on: | |
| pull_request: | |
| branches: | |
| - '**' | |
| permissions: | |
| contents: read | |
| jobs: | |
| cypress-run: | |
| runs-on: ubuntu-latest | |
| strategy: | |
| fail-fast: false | |
| max-parallel: 4 | |
| matrix: | |
| node-version: [22.x] | |
| shard: [1, 2, 3, 4] | |
| env: | |
| CI: true | |
| LOG_LEVEL: 'error' | |
| CYPRESS_SKIP_EU: true | |
| CYPRESS_SMOKE: true | |
| CYPRESS_APP_ENV: 'local' | |
| steps: | |
| - name: Checkout | |
| uses: actions/checkout@v4 | |
| - name: Use Node.js | |
| uses: actions/setup-node@v4 | |
| with: | |
| node-version: ${{ matrix.node-version }} | |
| cache: 'yarn' | |
| - name: Add bbc.com domain | |
| run: sudo echo "127.0.0.1 localhost.bbc.com" | sudo tee -a /etc/hosts | |
| - name: Install Cypress dependency (Next.js app) | |
| run: | | |
| chmod +x ./scripts/installCypress.sh | |
| ./scripts/installCypress.sh ws-nextjs-app | |
| - name: Install Cypress binary (Next.js app) | |
| working-directory: ws-nextjs-app | |
| run: yarn cypress:install | |
| - name: Compute spec shard | |
| id: specs | |
| working-directory: ws-nextjs-app | |
| run: | | |
| set -euxo pipefail | |
| find cypress/e2e -type f -name '*.cy.*' | sort > specs.txt | |
| TOTAL=${{ strategy.job-total }} | |
| INDEX=${{ matrix.shard }} | |
| ZERO=$((INDEX - 1)) | |
| COUNT=$(wc -l < specs.txt) | |
| if [ "$COUNT" -eq 0 ]; then | |
| echo "SPECS=" >> "$GITHUB_OUTPUT" | |
| echo "HAS_SPECS=false" >> "$GITHUB_OUTPUT" | |
| exit 0 | |
| fi | |
| LPS=$(( (COUNT + TOTAL - 1) / TOTAL )) | |
| split -d -l "$LPS" specs.txt chunk_ | |
| FILE=$(printf "chunk_%02d" "$ZERO") | |
| echo "SPECS<<EOF" >> "$GITHUB_OUTPUT" | |
| cat "$FILE" >> "$GITHUB_OUTPUT" | |
| echo "EOF" >> "$GITHUB_OUTPUT" | |
| echo "HAS_SPECS=true" >> "$GITHUB_OUTPUT" | |
| - name: Run Simorgh NextJS E2Es | |
| if: steps.specs.outputs.HAS_SPECS == 'true' | |
| uses: cypress-io/github-action@v6 | |
| with: | |
| install: false | |
| working-directory: ws-nextjs-app | |
| build: yarn build | |
| start: yarn start | |
| spec: ${{ steps.specs.outputs.SPECS }} |