From 7585204e0975ad8030edd26aad6460946400a664 Mon Sep 17 00:00:00 2001
From: Andrey Marchenko <andrey.marchenko@datadoghq.com>
Date: Wed, 7 Oct 2026 14:39:10 +0200
Subject: [PATCH] QA: preserve first Datadog Mocha onboarding attempt

---
 .github/nyc-hook.js      | 14 ++++++++++++++
 .github/workflows/ci.yml | 33 ++++++++++++++++++++++++++++++++-
 .gitignore               |  3 +++
 3 files changed, 49 insertions(+), 1 deletion(-)
 create mode 100644 .github/nyc-hook.js

diff --git a/.github/nyc-hook.js b/.github/nyc-hook.js
new file mode 100644
index 00000000000..636b9350c93
--- /dev/null
+++ b/.github/nyc-hook.js
@@ -0,0 +1,14 @@
+'use strict'
+
+const NYC = require('nyc')
+
+const nyc = new NYC({
+  cwd: process.cwd(),
+  tempDirectory: './.nyc_output',
+  exclude: ['examples/**', 'test/**', 'benchmarks/**'],
+  cache: false,
+  hookRequire: true,
+  instrument: true
+})
+
+nyc.wrap()
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e29004c274f..0db0a089a7f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -75,9 +75,40 @@ jobs:
           echo "Node.js version: $(node -v)"
           echo "NPM version: $(npm -v)"
 
+      - name: Install Datadog test runner
+        shell: bash
+        run: |
+          mkdir -p bin
+          if [ "$RUNNER_OS" = "Windows" ]; then
+            ddtest_bin=bin/ddtest.exe
+            ddtest_asset=ddtest-windows-amd64.exe
+          else
+            ddtest_bin=bin/ddtest
+            ddtest_asset=ddtest-linux-amd64
+          fi
+          curl -fsSL "https://github.com/DataDog/ddtest/releases/latest/download/$ddtest_asset" -o "$ddtest_bin"
+          chmod +x "$ddtest_bin"
+          echo "DDTEST_BIN=$ddtest_bin" >> "$GITHUB_ENV"
+
+      - name: Configure Datadog Test Optimization
+        uses: datadog/test-visibility-github-action@v3
+        with:
+          languages: js
+          api_key: ${{ secrets.DD_API_KEY }}
+          site: datadoghq.com
+          js-tracer-version: 5.111.0
+
       - name: Run tests
         shell: bash
-        run: npm run test-ci
+        env:
+          NODE_OPTIONS: -r ${{ env.DD_TRACE_PACKAGE }}
+          DD_TRACE_DISABLED_PLUGINS: http,router
+        run: |
+          rm -rf .testoptimization
+          rm -rf .nyc_output
+          mkdir -p .nyc_output/processinfo
+          "$DDTEST_BIN" run --platform javascript --framework mocha --command "node_modules/.bin/mocha --require test/support/env --require .github/nyc-hook --reporter spec --check-leaks test/ test/acceptance/" --min-parallelism 1 --max-parallelism 4
+          node_modules/.bin/nyc report --reporter=lcovonly --reporter=text
 
       - name: Upload code coverage
         uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
diff --git a/.gitignore b/.gitignore
index 768368cd652..92c6a7ecdc9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -13,6 +13,9 @@ yarn.lock
 .nyc_output
 coverage
 
+# Datadog Test Optimization
+.testoptimization/
+
 # Benchmarking
 benchmarks/graphs