[CI][FRONT] Storybook tests sharding (#9448)

# Introduction
The idea here is to improve perf nor fluidity of both storybook build
and tests execution duration.

## Levers:
- Storybook tests
[shards](https://storybook.js.org/docs/writing-tests/test-runner)
- Refactored storybook's build caching using `actions/cache/restore` and
`actions/cache/save` to avoid useless computation with we wanna just
write or retrieve it
- Running storybook build with --test
[flag](https://storybook.js.org/docs/api/main-config/main-config-build)
( please note that we only disable docs addons in order to keep coverage
up and running )

closes https://github.com/twentyhq/core-team-issues/issues/49

.github/workflows/ci-front.yaml

@@ -13,7 +13,7 @@ concurrency:
 jobs:
   front-sb-build:
     timeout-minutes: 30
-    runs-on: shipfox-8vcpu-ubuntu-2204
+    runs-on: ci-8-cores
     env:
       REACT_APP_SERVER_BASE_URL: http://localhost:3000
       NX_REJECT_UNKNOWN_LOCAL_CACHE: 0
@@ -36,37 +36,54 @@ jobs:
             packages/twenty-front/**
             packages/twenty-ui/**
             packages/twenty-shared/**
-
       - name: Skip if no relevant changes
         if: steps.changed-files.outputs.any_changed == 'false'
         run: echo "No relevant changes. Skipping CI."
-
       - name: Install dependencies
         if: steps.changed-files.outputs.any_changed == 'true' 
         uses: ./.github/workflows/actions/yarn-install
       - name: Diagnostic disk space issue
         if: steps.changed-files.outputs.any_changed == 'true'
         run: df -h
-      - name: Front / Restore Storybook Task Cache
-        if: steps.changed-files.outputs.any_changed == 'true'
-        uses: ./.github/workflows/actions/task-cache
+      - name: Restore storybook build cache
+        id: storybook-build-cache-restore
+        uses: actions/cache/restore@v4
         with:
-          tag: scope:frontend
-          tasks: storybook:build
+          path: |
+            .cache
+            .nx/cache
+            node_modules/.cache
+            packages/*/node_modules/.cache
+          key: storybook-build-ci-8-cores-runner-${{ github.ref_name }}-${{ github.sha }}
+          restore-keys: |
+            storybook-build-ci-8-cores-runner-${{ github.ref_name }}-
       - name: Front / Write .env
         if: steps.changed-files.outputs.any_changed == 'true'
         run: npx nx reset:env twenty-front
       - name: Front / Build storybook
         if: steps.changed-files.outputs.any_changed == 'true'
         run: npx nx storybook:build twenty-front
+      - name: Save storybook build cache
+        if: steps.storybook-build-cache-restore.outputs.cache-hit != 'true'
+        uses: actions/cache/save@v4
+        with:
+          key: ${{ steps.storybook-build-cache-restore.outputs.cache-primary-key }}
+          path: |
+            .cache
+            .nx/cache
+            node_modules/.cache
+            packages/*/node_modules/.cache
   front-sb-test:
     timeout-minutes: 30
-    runs-on: shipfox-8vcpu-ubuntu-2204
+    runs-on: ci-8-cores
     needs: front-sb-build
     strategy:
+      fail-fast: false
       matrix:
-        storybook_scope: [pages, modules]
+        shard: [1, 2, 3, 4]
+        storybook_scope: [modules, pages, performance]
     env:
+      SHARD_COUNTER: 4
       REACT_APP_SERVER_BASE_URL: http://localhost:3000
       NX_REJECT_UNKNOWN_LOCAL_CACHE: 0
     steps:
@@ -90,27 +107,43 @@ jobs:
       - name: Install Playwright
         if: steps.changed-files.outputs.any_changed == 'true'
         run: cd packages/twenty-front && npx playwright install
-      - name: Front / Restore Storybook Task Cache
-        if: steps.changed-files.outputs.any_changed == 'true'
-        uses: ./.github/workflows/actions/task-cache
+      - name: Restore Storybook build cache
+        uses: actions/cache/restore@v4
         with:
-          tag: scope:frontend
-          tasks: storybook:build
+          path: |
+            .cache
+            .nx/cache
+            node_modules/.cache
+            packages/*/node_modules/.cache
+          key: storybook-build-ci-8-cores-runner-${{ github.ref_name }}-${{ github.sha }}
+          restore-keys: |
+            storybook-build-ci-8-cores-runner-${{ github.ref_name }}-
       - name: Front / Write .env
         if: steps.changed-files.outputs.any_changed == 'true'
         run: npx nx reset:env twenty-front
       - name: Run storybook tests
         if: steps.changed-files.outputs.any_changed == 'true'
-        run: npx nx storybook:serve-and-test:static twenty-front --configuration=${{ matrix.storybook_scope }}
-  front-sb-test-performance:
+        run: npx nx storybook:serve-and-test:static twenty-front --configuration=${{ matrix.storybook_scope }} --shard=${{ matrix.shard }}/${{ env.SHARD_COUNTER }} --checkCoverage=false
+      - name: Rename coverage file
+        if: steps.changed-files.outputs.any_changed == 'true'
+        run: mv packages/twenty-front/coverage/storybook/coverage-storybook.json packages/twenty-front/coverage/storybook/coverage-shard-${{matrix.shard}}.json
+      - name: Upload coverage artifact
+        uses: actions/upload-artifact@v4
+        with:
+          retention-days: 1
+          name: coverage-artifacts-${{ matrix.storybook_scope }}-${{ github.run_id }}-${{ matrix.shard }}
+          path: packages/twenty-front/coverage/storybook/coverage-shard-${{matrix.shard}}.json
+  merge-reports-and-check-coverage:
     timeout-minutes: 30
-    runs-on: shipfox-8vcpu-ubuntu-2204
+    runs-on: ci-8-cores
+    needs: front-sb-test
     env:
-      REACT_APP_SERVER_BASE_URL: http://localhost:3000
-      NX_REJECT_UNKNOWN_LOCAL_CACHE: 0
+      PATH_TO_COVERAGE: packages/twenty-front/coverage/storybook
+    strategy:
+      matrix:
+        storybook_scope: [modules, pages, performance]
     steps:
-      - name: Fetch local actions
-        uses: actions/checkout@v4
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - name: Check for changed files
@@ -119,28 +152,31 @@ jobs:
         with:
           files: |
             packages/twenty-front/**  
-
       - name: Skip if no relevant changes
         if: steps.changed-files.outputs.any_changed == 'false'
         run: echo "No relevant changes. Skipping CI." 
-
       - name: Install dependencies
         if: steps.changed-files.outputs.any_changed == 'true'
         uses: ./.github/workflows/actions/yarn-install
-      - name: Install Playwright
+      - uses: actions/download-artifact@v4
         if: steps.changed-files.outputs.any_changed == 'true'
-        run: cd packages/twenty-front && npx playwright install
-      - name: Front / Write .env
+        with:
+          pattern: coverage-artifacts-${{ matrix.storybook_scope }}-${{ github.run_id }}-*
+          merge-multiple: true
+          path: coverage-artifacts
+      - name: Merge coverage reports
         if: steps.changed-files.outputs.any_changed == 'true'
-        run: npx nx reset:env twenty-front
-      - name: Run storybook tests
+        run: |
+          mkdir -p ${{ env.PATH_TO_COVERAGE }}
+          npx nyc merge coverage-artifacts ${{ env.PATH_TO_COVERAGE }}/coverage-storybook.json
+      - name: Checking coverage
         if: steps.changed-files.outputs.any_changed == 'true'
-        run: npx nx run twenty-front:storybook:serve-and-test:static:performance
+        run: npx nx storybook:coverage twenty-front --checkCoverage=true
   front-chromatic-deployment:
     timeout-minutes: 30
     if: contains(github.event.pull_request.labels.*.name, 'run-chromatic') || github.event_name == 'push'
     needs: front-sb-build
-    runs-on: ubuntu-latest
+    runs-on: ci-8-cores
     env:
       REACT_APP_SERVER_BASE_URL: http://127.0.0.1:3000
       CHROMATIC_PROJECT_TOKEN: ${{ secrets.CHROMATIC_PROJECT_TOKEN }}
@@ -164,12 +200,18 @@ jobs:
       - name: Install dependencies
         if: steps.changed-files.outputs.any_changed == 'true'
         uses: ./.github/workflows/actions/yarn-install
-      - name: Front / Restore Storybook Task Cache
-        if: steps.changed-files.outputs.any_changed == 'true'
-        uses: ./.github/workflows/actions/task-cache
+      - name: Restore storybook build cache
+        id: storybook-build-cache-restore
+        uses: actions/cache/restore@v4
         with:
-          tag: scope:frontend
-          tasks: storybook:build
+          path: |
+            .cache
+            .nx/cache
+            node_modules/.cache
+            packages/*/node_modules/.cache
+          key: storybook-build-ci-8-cores-runner-${{ github.ref_name }}-${{ github.sha }}
+          restore-keys: |
+            storybook-build-ci-8-cores-runner-${{ github.ref_name }}-
       - name: Front / Write .env
         if: steps.changed-files.outputs.any_changed == 'true'
         run: |
@@ -181,7 +223,7 @@ jobs:
         run: npx nx run twenty-front:chromatic:ci
   front-task:
     timeout-minutes: 30
-    runs-on: ubuntu-latest
+    runs-on: ci-8-cores
     env:
       NX_REJECT_UNKNOWN_LOCAL_CACHE: 0
     strategy:

nx.json

@@ -116,7 +116,7 @@
       "outputs": ["{projectRoot}/{options.output-dir}"],
       "options": {
         "cwd": "{projectRoot}",
-        "command": "VITE_DISABLE_TYPESCRIPT_CHECKER=true VITE_DISABLE_ESLINT_CHECKER=true storybook build",
+        "command": "VITE_DISABLE_TYPESCRIPT_CHECKER=true VITE_DISABLE_ESLINT_CHECKER=true storybook build --test",
         "output-dir": "storybook-static",
         "config-dir": ".storybook"
       },
@@ -152,12 +152,14 @@
       "options": {
         "cwd": "{projectRoot}",
         "commands": [
-          "test-storybook --url http://localhost:{args.port} --maxWorkers=3 --coverage --coverageDirectory={args.coverageDir}",
-          "nx storybook:coverage {projectName} --coverageDir={args.coverageDir}"
+          "test-storybook --url http://localhost:{args.port} --maxWorkers=3 --coverage --coverageDirectory={args.coverageDir} --shard={args.shard}",
+          "nx storybook:coverage {projectName} --coverageDir={args.coverageDir} --checkCoverage={args.checkCoverage}"
         ],
+        "shard": "1/1",
         "parallel": false,
         "coverageDir": "coverage/storybook",
-        "port": 6006
+        "port": 6006,
+        "checkCoverage": true
       }
     },
     "storybook:test:no-coverage": {
@@ -184,9 +186,10 @@
         "!{projectRoot}/coverage/storybook/coverage-storybook.json"
       ],
       "options": {
-        "command": "npx nyc report --reporter={args.reporter} --reporter=text-summary -t {args.coverageDir} --report-dir {args.coverageDir} --check-coverage --cwd={projectRoot}",
+        "command": "npx nyc report --reporter={args.reporter} --reporter=text-summary -t {args.coverageDir} --report-dir {args.coverageDir} --check-coverage={args.checkCoverage} --cwd={projectRoot}",
         "coverageDir": "coverage/storybook",
-        "reporter": "lcov"
+        "reporter": "lcov",
+        "checkCoverage": true
       },
       "configurations": {
         "text": { "reporter": "text" }
@@ -196,8 +199,10 @@
       "executor": "nx:run-commands",
       "options": {
         "commands": [
-          "npx concurrently --kill-others --success=first -n SB,TEST 'nx storybook:serve:static {projectName} --port={args.port} --configuration={args.performance}' 'npx wait-on tcp:{args.port} && nx storybook:test {projectName} --port={args.port} --configuration={args.scope}'"
+          "npx concurrently --kill-others --success=first -n SB,TEST 'nx storybook:serve:static {projectName} --port={args.port}' 'npx wait-on tcp:{args.port} && nx storybook:test {projectName} --shard={args.shard} --checkCoverage={args.checkCoverage} --port={args.port} --configuration={args.scope}'"
         ],
+        "shard": "1/1",
+        "checkCoverage": true,
         "port": 6006
       }
     },

packages/twenty-front/.storybook/main.ts

@@ -31,6 +31,14 @@ const computeStoriesGlob = () => {
 const config: StorybookConfig = {
   stories: computeStoriesGlob(),
   staticDirs: ['../public'],
+  build: {
+    test: {
+      disabledAddons: [
+        '@storybook/addon-docs',
+        '@storybook/addon-essentials/docs',
+      ],
+    }
+  },
   addons: [
     '@storybook/addon-links',
     '@storybook/addon-essentials',