[RN][Release][Testing][iOS] Use RNTester App downloaded from CI instead of building

.github/workflows/test-all.yml

@@ -157,7 +157,7 @@ jobs:
           react-native-version: ${{ needs.prepare_hermes_workspace.outputs.react-native-version }}
 
   test_ios_rntester:
-    runs-on: macos-13
+    runs-on: macos-13-large
     needs:
       [build_apple_slices_hermes, prepare_hermes_workspace, build_hermes_macos]
     env:

scripts/release-testing/test-e2e-local.js

@@ -85,40 +85,66 @@ async function testRNTesterIOS(
     } version of RNTester iOS with the new Architecture enabled`,
   );
 
+  // if everything succeeded so far, we can launch Metro and the app
+  // start the Metro server in a separate window
+  launchPackagerInSeparateWindow(pwd().toString());
+
   // remember that for this to be successful
   // you should have run bundle install once
   // in your local setup
-  if (argv.hermes === true && ciArtifacts != null) {
-    const hermesURL = await ciArtifacts.artifactURLHermesDebug();
-    const hermesZipPath = path.join(ciArtifacts.baseTmpPath(), 'hermes.zip');
-    // download hermes source code from manifold
-    ciArtifacts.downloadArtifact(hermesURL, hermesZipPath);
-    // GHA zips by default the artifacts.
-    const outputFolder = path.join(ciArtifacts.baseTmpPath(), 'hermes');
-    exec(`rm -rf ${outputFolder}`);
-    exec(`unzip ${hermesZipPath} -d ${outputFolder}`);
-    const hermesPath = path.join(outputFolder, 'hermes-ios-Debug.tar.gz');
-
-    console.info(`Downloaded Hermes in ${hermesPath}`);
-    exec(
-      `HERMES_ENGINE_TARBALL_PATH=${hermesPath} RCT_NEW_ARCH_ENABLED=1 bundle exec pod install --ansi`,
+  if (ciArtifacts != null) {
+    const appOutputFolder = path.join(
+      ciArtifacts.baseTmpPath(),
+      'RNTester.app',
     );
+    exec(`rm -rf ${appOutputFolder}`);
+    if (argv.hermes === true) {
+      // download hermes App
+      const hermesAppUrl = await ciArtifacts.artifactURLForHermesRNTesterApp();
+      const hermesAppZipPath = path.join(
+        ciArtifacts.baseTmpPath(),
+        'RNTesterAppHermes.zip',
+      );
+      ciArtifacts.downloadArtifact(hermesAppUrl, hermesAppZipPath);
+      exec(`unzip ${hermesAppZipPath} -d ${appOutputFolder}`);
+    } else {
+      // download JSC app
+      const hermesAppUrl = await ciArtifacts.artifactURLForJSCRNTesterApp();
+      const hermesAppZipPath = path.join(
+        ciArtifacts.baseTmpPath(),
+        'RNTesterAppJSC.zip',
+      );
+      ciArtifacts.downloadArtifact(hermesAppUrl, hermesAppZipPath);
+      exec(`unzip ${hermesAppZipPath} -d ${appOutputFolder}`);
+    }
+
+    // boot device
+    const bootedDevice = String(
+      exec('xcrun simctl list | grep "iPhone 16 Pro" | grep Booted', {
+        silent: true,
+      }),
+    ).trim();
+    if (!bootedDevice || bootedDevice.length === 0) {
+      exec('xcrun simctl boot "iPhone 16 Pro"');
+    }
+
+    // install app on device
+    exec(`xcrun simctl install booted ${appOutputFolder}`);
+
+    // launch the app on iOS simulator
+    exec('xcrun simctl launch booted com.meta.RNTester.localDevelopment');
   } else {
     exec(
       `USE_HERMES=${
         argv.hermes === true ? 1 : 0
       } CI=${onReleaseBranch.toString()} RCT_NEW_ARCH_ENABLED=1 bundle exec pod install --ansi`,
     );
-  }
-
-  // if everything succeeded so far, we can launch Metro and the app
-  // start the Metro server in a separate window
-  launchPackagerInSeparateWindow(pwd().toString());
 
-  // launch the app on iOS simulator
-  exec(
-    'npx react-native run-ios --scheme RNTester --simulator "iPhone 15 Pro"',
-  );
+    // launch the app on iOS simulator
+    exec(
+      'npx react-native run-ios --scheme RNTester --simulator "iPhone 15 Pro"',
+    );
+  }
 }
 
 /**
@@ -201,7 +227,7 @@ async function testRNTesterAndroid(
  * - @onReleaseBranch whether we are on a release branch or not
  */
 async function testRNTester(
-  circleCIArtifacts /*:Unwrap<ReturnType<typeof setupGHAArtifacts>> */,
+  ciArtifacts /*:Unwrap<ReturnType<typeof setupGHAArtifacts>> */,
   onReleaseBranch /*: boolean */,
 ) {
   // FIXME: make sure that the commands retains colors
@@ -210,9 +236,9 @@ async function testRNTester(
   pushd('packages/rn-tester');
 
   if (argv.platform === 'ios') {
-    await testRNTesterIOS(circleCIArtifacts, onReleaseBranch);
+    await testRNTesterIOS(ciArtifacts, onReleaseBranch);
   } else {
-    await testRNTesterAndroid(circleCIArtifacts);
+    await testRNTesterAndroid(ciArtifacts);
   }
   popd();
 }

scripts/release-testing/utils/github-actions-utils.js

@@ -214,6 +214,14 @@ async function artifactURLForHermesRNTesterAPK(
   return getArtifactURL('rntester-hermes-debug');
 }
 
+async function artifactURLForJSCRNTesterApp() /*: Promise<string> */ {
+  return getArtifactURL('RNTesterApp-NewArch-JSC-Debug');
+}
+
+async function artifactURLForHermesRNTesterApp() /*: Promise<string> */ {
+  return getArtifactURL('RNTesterApp-NewArch-Hermes-Debug');
+}
+
 async function artifactURLForMavenLocal() /*: Promise<string> */ {
   return getArtifactURL('maven-local');
 }
@@ -247,6 +255,8 @@ module.exports = {
   downloadArtifact,
   artifactURLForJSCRNTesterAPK,
   artifactURLForHermesRNTesterAPK,
+  artifactURLForJSCRNTesterApp,
+  artifactURLForHermesRNTesterApp,
   artifactURLForMavenLocal,
   artifactURLHermesDebug,
   artifactURLForReactNative,