ci: re-enable react-native-test-app integration test using local pack

.github/scripts/export-versions.mts

@@ -0,0 +1,35 @@
+#!/usr/bin/env node
+/**
+ * Export react and react-native version information from packages/react-native/package.json.
+ *
+ * Outputs (written to $GITHUB_OUTPUT):
+ *   react_version         – the React peer dependency version (e.g. "19.0.0")
+ *   react_native_version  – the coerced major.minor React Native version (e.g. "0.79")
+ */
+import * as fs from "node:fs";
+import { URL } from "node:url";
+
+function coerce(version: string): string {
+  const [major, minor = "0"] = version.split("-")[0].split(".");
+  return `${major}.${minor}`;
+}
+
+function exportValue(name: string, value: string): void {
+  const githubOutput = process.env.GITHUB_OUTPUT;
+  if (githubOutput) {
+    fs.appendFileSync(githubOutput, `${name}=${value}\n`);
+  } else {
+    // Fallback: print to stdout for local debugging
+    console.log(`${name}=${value}`);
+  }
+}
+
+const manifestPath = new URL(
+  "../../packages/react-native/package.json",
+  import.meta.url
+);
+const json = fs.readFileSync(manifestPath, { encoding: "utf-8" });
+const { dependencies, peerDependencies } = JSON.parse(json);
+
+exportValue("react_version", peerDependencies["react"]);
+exportValue("react_native_version", coerce(dependencies["@react-native/codegen"]));

.github/workflows/microsoft-pr.yml

@@ -149,13 +149,11 @@ jobs:
     if: ${{ endsWith(github.base_ref, '-stable') }}
     uses: ./.github/workflows/microsoft-test-react-native-macos-init.yml
 
-  # https://github.com/microsoft/react-native-macos/issues/2344
-  # Disable these tests because verdaccio hangs
-  # react-native-test-app-integration:
-  #   name: "Test react-native-test-app integration"
-  #   permissions: {}
-  #   if: ${{ endsWith(github.base_ref, '-stable') }}
-  #   uses: ./.github/workflows/microsoft-react-native-test-app-integration.yml
+  react-native-test-app-integration:
+    name: "Test react-native-test-app integration"
+    permissions: {}
+    if: ${{ endsWith(github.base_ref, '-stable') }}
+    uses: ./.github/workflows/microsoft-react-native-test-app-integration.yml
 
   PR:
     name: "PR"
@@ -171,7 +169,7 @@ jobs:
       - build-rntester
       - prebuild-macos-core
       - test-react-native-macos-init
-      # - react-native-test-app-integration
+      - react-native-test-app-integration
     steps:
       - name: Check for failures or cancellations
         if: ${{ contains(needs.*.result, 'failure') || contains(needs.*.result, 'cancelled') }}

.github/workflows/microsoft-react-native-test-app-integration.yml

@@ -25,64 +25,83 @@ jobs:
         run: yarn install
 
       - name: Build community CLI plugin
-        run: yarn build
+        run: |
+          yarn build
+          # yarn build rewrites package.json exports; restore them
+          git checkout -- packages/*/package.json
 
       - name: Build react-native-macos-init
         working-directory: packages/react-native-macos-init
         run: yarn build
 
-      - name: Start Verdaccio server
-        run: |
-          set -euo pipefail
-          nohup npx --yes verdaccio --config .ado/verdaccio/config.yaml >/dev/null 2>&1 &
-          echo $! > $RUNNER_TEMP/verdaccio.pid
-      - name: Wait for Verdaccio to be ready
-        run: node .ado/scripts/waitForVerdaccio.mjs http://localhost:4873
-
-      - name: Configure npm for Verdaccio
-        run: .ado/scripts/verdaccio.sh init
+      - name: Export versions
+        id: versions
+        run: node .github/scripts/export-versions.mts
 
-      - name: Publish to Verdaccio
-        run: .ado/scripts/verdaccio.sh publish --branch origin/${{ github.base_ref }}
+      - name: Pack local react-native-macos
+        working-directory: packages/react-native
+        run: |
+          set -eox pipefail
+          yarn pack -o ${{ runner.temp }}/react-native-macos.tgz
 
       - name: Clone react-native-test-app
         run: |
           git clone --filter=blob:none --progress https://github.com/microsoft/react-native-test-app.git
 
-      - name: Export versions
-        run: node .ado/scripts/export-versions.mjs
-
       - name: Configure react-native-test-app dependencies
+        working-directory: react-native-test-app/packages/app
+        run: |
+          node scripts/internal/set-react-version.mts ${{ steps.versions.outputs.react_native_version }} --overrides '{ "react-native-macos": "file:${{ runner.temp }}/react-native-macos.tgz" }'
+
+      - name: Force react-native-macos to local tarball in all workspaces
         working-directory: react-native-test-app
         run: |
-          npm run set-react-version $(cat ${{ github.workspace }}/.react_native_version) -- --overrides '{ "react-native-macos": "1000.0.0" }'
+          node -e "
+            const fs = require('fs');
+            const tarball = 'file:${{ runner.temp }}/react-native-macos.tgz';
+
+            // Add root-level resolution
+            const root = JSON.parse(fs.readFileSync('package.json', 'utf8'));
+            root.resolutions = root.resolutions || {};
+            root.resolutions['react-native-macos'] = tarball;
+
+            // Pin @types/react to a single version so react-native-macos does
+            // not get virtualized twice (the test app tree carries both 19.1.x
+            // and 19.2.x, both satisfying its '^19.1.0' peer, which produces
+            // two virtual copies and trips the duplicate-dependency checker).
+            root.resolutions['@types/react'] = '~19.1.0';
+            fs.writeFileSync('package.json', JSON.stringify(root, null, 2) + '\n');
+
+            // Override direct dependency in example-macos
+            const exMacosPath = 'packages/example-macos/package.json';
+            const exMacos = JSON.parse(fs.readFileSync(exMacosPath, 'utf8'));
+            if (exMacos.dependencies && exMacos.dependencies['react-native-macos']) {
+              exMacos.dependencies['react-native-macos'] = tarball;
+              fs.writeFileSync(exMacosPath, JSON.stringify(exMacos, null, 2) + '\n');
+            }
+          "
 
       - name: Install dependencies in test app
         working-directory: react-native-test-app
+        env:
+          YARN_ENABLE_HARDENED_MODE: 0
+          YARN_NPM_MINIMAL_AGE_GATE: 0
         run: |
           set -eo pipefail
-          ${{ github.workspace }}/.ado/scripts/verdaccio.sh configure
           yarn --no-immutable
 
       - name: Bundle JavaScript
-        working-directory: react-native-test-app/example
+        working-directory: react-native-test-app/packages/example-macos
         run: |
           yarn build:macos || yarn build:macos
 
       - name: Install Pods
-        working-directory: react-native-test-app/example
+        working-directory: react-native-test-app/packages/example-macos
         run: |
           rm -f macos/Podfile.lock
           pod install --project-directory=macos
 
       - name: Build test app
-        working-directory: react-native-test-app/example
-        run: |
-          ../scripts/build/xcodebuild.sh macos/Example.xcworkspace build
-
-      - name: Stop Verdaccio
-        if: always()
+        working-directory: react-native-test-app/packages/example-macos
         run: |
-          if [ -f "$RUNNER_TEMP/verdaccio.pid" ]; then
-            kill "$(cat $RUNNER_TEMP/verdaccio.pid)" || true
-          fi
+          ../../scripts/xcodebuild.sh macos/Example.xcworkspace build