performance test

.github/workflows/performance-rebaseline.yml

@@ -0,0 +1,59 @@
+name: Update CI Performance Baseline
+
+on:
+  workflow_dispatch:
+    inputs:
+      reason:
+        description: "Reason for re-baselining"
+        required: true
+        type: string
+
+permissions:
+  contents: write
+
+jobs:
+  rebaseline:
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 22
+          cache: npm
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run performance tests (update baseline)
+        run: npm run test:performance:update-baseline
+        env:
+          CI: true
+          PERF_TESTS: "1"
+          PERF_UPDATE_BASELINE: "1"
+          PERF_BASELINE_FILE: "performance-baseline.ci.json"
+
+      - name: Commit CI baseline
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+          git add test/performance/performance-baseline.ci.json
+          git commit -m "chore: update CI performance baseline
+
+          Reason: ${{ github.event.inputs.reason }}
+          Triggered by: @${{ github.actor }}
+          Workflow run: ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}"
+          git push
+
+      - name: Summary
+        run: |
+          echo "## Performance Baseline Updated" >> $GITHUB_STEP_SUMMARY
+          echo "" >> $GITHUB_STEP_SUMMARY
+          echo "**Reason:** ${{ github.event.inputs.reason }}" >> $GITHUB_STEP_SUMMARY
+          echo "" >> $GITHUB_STEP_SUMMARY
+          echo "The CI baseline has been committed to \`test/performance/performance-baseline.ci.json\`." >> $GITHUB_STEP_SUMMARY
+          echo "Future performance test runs will compare against this baseline." >> $GITHUB_STEP_SUMMARY
+          echo "" >> $GITHUB_STEP_SUMMARY
+          cat coverage/performance-report.md >> $GITHUB_STEP_SUMMARY

.github/workflows/performance-tests.yml

@@ -0,0 +1,40 @@
+name: Performance Tests
+
+on:
+  pull_request:
+    branches: [main]
+    paths:
+      - "srv/**"
+      - "lib/**"
+      - "test/performance/**"
+      - "package.json"
+  workflow_dispatch:
+
+concurrency:
+  group: performance-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  performance:
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 22
+          cache: npm
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run performance tests
+        run: npm run test:performance
+        env:
+          CI: true
+          PERF_TESTS: "1"
+          PERF_BASELINE_FILE: "performance-baseline.ci.json"
+          PERF_MAX_REGRESSION: "0.3"
+          PERF_MAX_SLOPE_VARIANCE: "0.3"

.gitignore

@@ -39,4 +39,7 @@ mta_archives/
 # Tests
 coverage/
 TEST-mocha.xml
-.nyc_output/
+.nyc_output/
+
+# Performance baselines (machine-specific)
+test/performance/performance-baseline.json

.mocharc.json

@@ -1,5 +1,6 @@
 {
   "spec": "test/**/*.test.ts",
+  "ignore": ["test/performance/**"],
   "recursive": true,
   "timeout": 600000,
   "require": ["ts-node/register/transpile-only"],

package.json

@@ -23,6 +23,9 @@
     "tar": "npm run build && cd gen && npm pack",
     "watch-data-inspector-ui": "cds watch --open data-inspector-ui/webapp/index.html?sap-ui-xx-viewCache=false",
     "test": "cross-env CDS_TYPESCRIPT=true mocha",
+    "test:performance": "cross-env CDS_TYPESCRIPT=true PERF_TESTS=1 mocha --config test/performance/.mocharc.performance.json",
+    "test:performance:update-baseline": "cross-env CDS_TYPESCRIPT=true PERF_TESTS=1 PERF_UPDATE_BASELINE=1 mocha --config test/performance/.mocharc.performance.json",
+    "test:performance:check-drift": "node test/performance/check-baseline-drift.js",
     "coverage": "cross-env CDS_TYPESCRIPT=true c8 mocha"
   },
   "peerDependencies": {

test/performance/.mocharc.performance.json

@@ -0,0 +1,7 @@
+{
+  "spec": "test/performance/**/*.test.ts",
+  "recursive": true,
+  "timeout": 600000,
+  "require": ["ts-node/register/transpile-only"],
+  "exit": true
+}