ci: Split PR unit testing into frontend and backend (no-changelog) (#21009)

.github/workflows/units-tests-reusable.yml

@@ -26,8 +26,8 @@ env:
   NODE_OPTIONS: --max-old-space-size=7168
 
 jobs:
-  unit-test:
-    name: Unit tests
+  unit-test-backend:
+    name: Backend
     runs-on: blacksmith-4vcpu-ubuntu-2204
     env:
       COVERAGE_ENABLED: ${{ inputs.collectCoverage }}
@@ -42,7 +42,7 @@ jobs:
           node-version: ${{ inputs.nodeVersion }}
 
       - name: Test
-        run: pnpm test:ci
+        run: pnpm test:ci:backend
 
       - name: Upload test results to Codecov
         if: ${{ !cancelled() }}
@@ -54,3 +54,52 @@ jobs:
         uses: codecov/codecov-action@18283e04ce6e62d37312384ff67231eb8fd56d24 # v5.4.3
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
+          flags: backend
+
+  unit-test-frontend:
+    name: Frontend (${{ matrix.shard }}/2)
+    runs-on: blacksmith-4vcpu-ubuntu-2204
+    strategy:
+      fail-fast: false
+      matrix:
+        shard: [1, 2]
+    env:
+      COVERAGE_ENABLED: ${{ inputs.collectCoverage }}
+    steps:
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        with:
+          ref: ${{ inputs.ref }}
+
+      - name: Build
+        uses: n8n-io/n8n/.github/actions/setup-nodejs-blacksmith@f5fbbbe0a28a886451c886cac6b49192a39b0eea # v1.104.1
+        with:
+          node-version: ${{ inputs.nodeVersion }}
+
+      - name: Test
+        run: pnpm test:ci:frontend -- --shard=${{ matrix.shard }}/2
+        env:
+          VITEST_SHARD: ${{ matrix.shard }}/2
+
+      - name: Upload test results to Codecov
+        if: ${{ !cancelled() }}
+        uses: codecov/test-results-action@47f89e9acb64b76debcd5ea40642d25a4adced9f # v1.1.1
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          name: frontend-shard-${{ matrix.shard }}
+
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@18283e04ce6e62d37312384ff67231eb8fd56d24 # v5.4.3
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          flags: frontend
+          name: frontend-shard-${{ matrix.shard }}
+
+  unit-test:
+    name: Unit tests
+    runs-on: ubuntu-latest
+    needs: [unit-test-backend, unit-test-frontend]
+    if: always()
+    steps:
+      - name: Fail if tests failed
+        if: needs.unit-test-backend.result == 'failure' || needs.unit-test-frontend.result == 'failure'
+        run: exit 1

package.json

@@ -44,6 +44,8 @@
     "start:windows": "cd packages/cli/bin && n8n",
     "test": "JEST_JUNIT_CLASSNAME={filepath} turbo run test",
     "test:ci": "turbo run test --continue --concurrency=1",
+    "test:ci:frontend": "turbo run test --continue --filter='./packages/frontend/**'",
+    "test:ci:backend": "turbo run test --continue --concurrency=1 --filter='!./packages/frontend/**'",
     "test:affected": "turbo run test --affected --concurrency=1",
     "test:with:docker": "pnpm --filter=n8n-playwright test:container:standard",
     "test:show:report": "pnpm --filter=n8n-playwright exec playwright show-report",