[flutter_tools] fix iOS build inconsistencies and pipe through performance file (#56094)

Ensure iOS and android builds can be correctly cached. Use the performance-measurement-file to verify that all targets were skipped on the second invocation. This is only run on the flutter_gallery build.

dev/bots/test.dart

@@ -3,6 +3,7 @@
 // found in the LICENSE file.
 
 import 'dart:async';
+import 'dart:convert';
 import 'dart:io';
 import 'dart:math' as math;
 
@@ -282,15 +283,18 @@ Future<void> _runToolTests() async {
   await selectSubshard(subshards);
 }
 
-/// Verifies that AOT, APK, and IPA (if on macOS) builds the examples apps
+/// Verifies that APK, and IPA (if on macOS) builds the examples apps
 /// without crashing. It does not actually launch the apps. That happens later
 /// in the devicelab. This is just a smoke-test. In particular, this will verify
 /// we can build when there are spaces in the path name for the Flutter SDK and
 /// target app.
 Future<void> _runBuildTests() async {
   final List<FileSystemEntity> exampleDirectories = Directory(path.join(flutterRoot, 'examples')).listSync()
-    ..add(Directory(path.join(flutterRoot, 'dev', 'integration_tests', 'non_nullable')));
+    ..add(Directory(path.join(flutterRoot, 'dev', 'integration_tests', 'non_nullable')))
+    ..add(Directory(path.join(flutterRoot, 'dev', 'integration_tests', 'flutter_gallery')));
   for (final FileSystemEntity fileEntity in exampleDirectories) {
+    // Only verify caching with flutter gallery.
+    final bool verifyCaching = fileEntity.path.contains('flutter_gallery');
     if (fileEntity is! Directory) {
       continue;
     }
@@ -300,15 +304,15 @@ Future<void> _runBuildTests() async {
       ? <String>['--enable-experiment', 'non-nullable']
       : <String>[];
     if (Directory(path.join(examplePath, 'android')).existsSync()) {
-      await _flutterBuildApk(examplePath, release: false, additionalArgs: additionalArgs);
-      await _flutterBuildApk(examplePath, release: true, additionalArgs: additionalArgs);
+      await _flutterBuildApk(examplePath, release: false, additionalArgs: additionalArgs, verifyCaching: verifyCaching);
+      await _flutterBuildApk(examplePath, release: true, additionalArgs: additionalArgs, verifyCaching: verifyCaching);
     } else {
       print('Example project ${path.basename(examplePath)} has no android directory, skipping apk');
     }
     if (Platform.isMacOS) {
       if (Directory(path.join(examplePath, 'ios')).existsSync()) {
-        await _flutterBuildIpa(examplePath, release: false, additionalArgs: additionalArgs);
-        await _flutterBuildIpa(examplePath, release: true, additionalArgs: additionalArgs);
+        await _flutterBuildIpa(examplePath, release: false, additionalArgs: additionalArgs, verifyCaching: verifyCaching);
+        await _flutterBuildIpa(examplePath, release: true, additionalArgs: additionalArgs, verifyCaching: verifyCaching);
       } else {
         print('Example project ${path.basename(examplePath)} has no ios directory, skipping ipa');
       }
@@ -332,9 +336,10 @@ Future<void> _runBuildTests() async {
 
 Future<void> _flutterBuildApk(String relativePathToApplication, {
   @required bool release,
+  bool verifyCaching = false,
   List<String> additionalArgs = const <String>[],
 }) async {
-  print('${green}Testing APK --debug build$reset for $cyan$relativePathToApplication$reset...');
+  print('${green}Testing APK build$reset for $cyan$relativePathToApplication$reset...');
   await runCommand(flutter,
     <String>[
       'build',
@@ -348,11 +353,36 @@ Future<void> _flutterBuildApk(String relativePathToApplication, {
     ],
     workingDirectory: path.join(flutterRoot, relativePathToApplication),
   );
+
+  if (verifyCaching) {
+    print('${green}Testing APK cache$reset for $cyan$relativePathToApplication$reset...');
+    await runCommand(flutter,
+      <String>[
+        'build',
+        'apk',
+        '--performance-measurement-file=perf.json',
+        ...additionalArgs,
+        if (release)
+          '--release'
+        else
+          '--debug',
+        '-v',
+      ],
+      workingDirectory: path.join(flutterRoot, relativePathToApplication),
+    );
+    final File file = File(path.join(flutterRoot, relativePathToApplication, 'perf.json'));
+    if (!_allTargetsCached(file)) {
+      print('${red}Not all build targets cached after second run.$reset');
+      print('The target performance data was: ${file.readAsStringSync()}');
+      exit(1);
+    }
+  }
 }
 
 Future<void> _flutterBuildIpa(String relativePathToApplication, {
   @required bool release,
   List<String> additionalArgs = const <String>[],
+  bool verifyCaching = false,
 }) async {
   assert(Platform.isMacOS);
   print('${green}Testing IPA build$reset for $cyan$relativePathToApplication$reset...');
@@ -382,6 +412,38 @@ Future<void> _flutterBuildIpa(String relativePathToApplication, {
     ],
     workingDirectory: path.join(flutterRoot, relativePathToApplication),
   );
+  if (verifyCaching) {
+    print('${green}Testing IPA cache$reset for $cyan$relativePathToApplication$reset...');
+    await runCommand(flutter,
+      <String>[
+        'build',
+        'ios',
+        '--performance-measurement-file=perf.json',
+        ...additionalArgs,
+        '--no-codesign',
+        if (release)
+          '--release'
+        else
+          '--debug',
+        '-v',
+      ],
+      workingDirectory: path.join(flutterRoot, relativePathToApplication),
+    );
+    final File file = File(path.join(flutterRoot, relativePathToApplication, 'perf.json'));
+    if (!_allTargetsCached(file)) {
+      print('${red}Not all build targets cached after second run.$reset');
+      print('The target performance data was: ${file.readAsStringSync()}');
+      exit(1);
+    }
+  }
+}
+
+bool _allTargetsCached(File performanceFile) {
+  final Map<String, Object> data = json.decode(performanceFile.readAsStringSync())
+    as Map<String, Object>;
+  final List<Map<String, Object>> targets = (data['targets'] as List<Object>)
+    .cast<Map<String, Object>>();
+  return targets.every((Map<String, Object> element) => element['skipped'] == true);
 }
 
 Future<void> _flutterBuildDart2js(String relativePathToApplication, String target, { bool expectNonZeroExit = false }) async {

packages/flutter_tools/bin/macos_assemble.sh

@@ -62,14 +62,9 @@ ephemeral_dir="${SOURCE_ROOT}/Flutter/ephemeral"
 build_inputs_path="${ephemeral_dir}/FlutterInputs.xcfilelist"
 build_outputs_path="${ephemeral_dir}/FlutterOutputs.xcfilelist"
 
-icon_tree_shaker_flag="false"
-if [[ -n "$TREE_SHAKE_ICONS" ]]; then
-  icon_tree_shaker_flag="true"
-fi
-
-dart_obfuscation_flag="false"
-if [[ -n "$DART_OBFUSCATION" ]]; then
-  dart_obfuscation_flag="true"
+local performance_measurement_option=""
+if [[ -n "$PERFORMANCE_MEASUREMENT_FILE" ]]; then
+  performance_measurement_option="--performance-measurement-file=${PERFORMANCE_MEASUREMENT_FILE}"
 fi
 
 RunCommand "${FLUTTER_ROOT}/bin/flutter"                                    \
@@ -77,11 +72,12 @@ RunCommand "${FLUTTER_ROOT}/bin/flutter"                                    \
     ${flutter_engine_flag}                                                  \
     ${local_engine_flag}                                                    \
     assemble                                                                \
+    ${performance_measurement_option}                                       \
     -dTargetPlatform=darwin-x64                                             \
     -dTargetFile="${target_path}"                                           \
     -dBuildMode="${build_mode}"                                             \
-    -dTreeShakeIcons="${icon_tree_shaker_flag}"                             \
-    -dDartObfuscation="${dart_obfuscation_flag}"                            \
+    -dTreeShakeIcons="${TREE_SHAKE_ICONS}"                                  \
+    -dDartObfuscation="${DART_OBFUSCATION}"                                 \
     -dSplitDebugInfo="${SPLIT_DEBUG_INFO}"                                  \
     --DartDefines="${DART_DEFINES}"                                         \
     --ExtraGenSnapshotOptions="${EXTRA_GEN_SNAPSHOT_OPTIONS}"               \

packages/flutter_tools/bin/xcode_backend.sh

@@ -54,10 +54,6 @@ BuildApp() {
     derived_dir="${project_path}/.ios/Flutter"
   fi
 
-  RunCommand mkdir -p -- "$derived_dir"
-  AssertExists "$derived_dir"
-  RunCommand rm -rf -- "${derived_dir}/App.framework"
-
   # Default value of assets_path is flutter_assets
   local assets_path="flutter_assets"
   # The value of assets_path can set by add FLTAssetsPath to
@@ -156,19 +152,9 @@ BuildApp() {
     verbose_flag="--verbose"
   fi
 
-  local track_widget_creation_flag=""
-  if [[ -n "$TRACK_WIDGET_CREATION" ]]; then
-    track_widget_creation_flag="true"
-  fi
-
-  icon_tree_shaker_flag="false"
-  if [[ -n "$TREE_SHAKE_ICONS" ]]; then
-    icon_tree_shaker_flag="true"
-  fi
-
-  dart_obfuscation_flag="false"
-  if [[ -n "$DART_OBFUSCATION" ]]; then
-    dart_obfuscation_flag="true"
+  local performance_measurement_option=""
+  if [[ -n "$PERFORMANCE_MEASUREMENT_FILE" ]]; then
+    performance_measurement_option="--performance-measurement-file=${PERFORMANCE_MEASUREMENT_FILE}"
   fi
 
   RunCommand "${FLUTTER_ROOT}/bin/flutter"                                \
@@ -177,14 +163,15 @@ BuildApp() {
     ${local_engine_flag}                                                  \
     assemble                                                              \
     --output="${derived_dir}/"                                            \
+    ${performance_measurement_option}                                     \
     -dTargetPlatform=ios                                                  \
     -dTargetFile="${target_path}"                                         \
     -dBuildMode=${build_mode}                                             \
     -dIosArchs="${ARCHS}"                                                 \
     -dSplitDebugInfo="${SPLIT_DEBUG_INFO}"                                \
-    -dTreeShakeIcons="${icon_tree_shaker_flag}"                           \
-    -dTrackWidgetCreation="${track_widget_creation_flag}"                 \
-    -dDartObfuscation="${dart_obfuscation_flag}"                          \
+    -dTreeShakeIcons="${TREE_SHAKE_ICONS}"                                \
+    -dTrackWidgetCreation="${TRACK_WIDGET_CREATION}"                      \
+    -dDartObfuscation="${DART_OBFUSCATION}"                               \
     -dEnableBitcode="${bitcode_flag}"                                     \
     --ExtraGenSnapshotOptions="${EXTRA_GEN_SNAPSHOT_OPTIONS}"             \
     --DartDefines="${DART_DEFINES}"                                       \

packages/flutter_tools/gradle/flutter.gradle

@@ -623,6 +623,10 @@ class FlutterPlugin implements Plugin<Project> {
         if (project.hasProperty('bundle-sksl-path')) {
             bundleSkSLPathValue = project.property('bundle-sksl-path')
         }
+        String performanceMeasurementFileValue;
+        if (project.hasProperty('performance-measurement-file')) {
+            performanceMeasurementFileValue = project.property('performance-measurement-file')
+        }
         def targetPlatforms = getTargetPlatforms()
         def addFlutterDeps = { variant ->
             if (shouldSplitPerAbi()) {
@@ -662,6 +666,7 @@ class FlutterPlugin implements Plugin<Project> {
                 dartObfuscation dartObfuscationValue
                 dartDefines dartDefinesValue
                 bundleSkSLPath bundleSkSLPathValue
+                performanceMeasurementFile performanceMeasurementFileValue
                 doLast {
                     project.exec {
                         if (Os.isFamily(Os.FAMILY_WINDOWS)) {
@@ -856,6 +861,7 @@ abstract class BaseFlutterTask extends DefaultTask {
     String dartDefines
     @Optional @Input
     String bundleSkSLPath
+    String performanceMeasurementFile;
 
     @OutputFiles
     FileCollection getDependenciesFiles() {
@@ -903,6 +909,9 @@ abstract class BaseFlutterTask extends DefaultTask {
             args "assemble"
             args "--depfile", "${intermediateDir}/flutter_build.d"
             args "--output", "${intermediateDir}"
+            if (performanceMeasurementFile != null) {
+                args "--performance-measurement-file=${performanceMeasurementFile}"
+            }
             if (!fastStart || buildMode != "debug") {
                 args "-dTargetFile=${targetPath}"
             } else {

packages/flutter_tools/lib/src/android/gradle.dart

@@ -354,6 +354,9 @@ Future<void> buildGradleApp({
   if (androidBuildInfo.buildInfo.bundleSkSLPath != null) {
     command.add('-Pbundle-sksl-path=${androidBuildInfo.buildInfo.bundleSkSLPath}');
   }
+  if (androidBuildInfo.buildInfo.performanceMeasurementFile != null) {
+    command.add('-Pperformance-measurement-file=${androidBuildInfo.buildInfo.performanceMeasurementFile}');
+  }
   command.add(assembleTask);
 
   GradleHandledError detectedGradleError;

packages/flutter_tools/lib/src/build_info.dart

@@ -27,6 +27,7 @@ class BuildInfo {
     this.bundleSkSLPath,
     this.dartExperiments = const <String>[],
     @required this.treeShakeIcons,
+    this.performanceMeasurementFile,
   });
 
   final BuildMode mode;
@@ -89,6 +90,13 @@ class BuildInfo {
   /// A list of Dart experiments.
   final List<String> dartExperiments;
 
+  /// The name of a file where flutter assemble will output performance
+  /// information in a JSON format.
+  ///
+  /// This is not considered a build input and will not force assemble to
+  /// rerun tasks.
+  final String performanceMeasurementFile;
+
   static const BuildInfo debug = BuildInfo(BuildMode.debug, null, treeShakeIcons: false);
   static const BuildInfo profile = BuildInfo(BuildMode.profile, null, treeShakeIcons: kIconTreeShakerEnabledDefault);
   static const BuildInfo jitRelease = BuildInfo(BuildMode.jitRelease, null, treeShakeIcons: kIconTreeShakerEnabledDefault);
@@ -143,6 +151,8 @@ class BuildInfo {
         'TRACK_WIDGET_CREATION': trackWidgetCreation.toString(),
       if (treeShakeIcons != null)
         'TREE_SHAKE_ICONS': treeShakeIcons.toString(),
+      if (performanceMeasurementFile != null)
+        'PERFORMANCE_MEASUREMENT_FILE': performanceMeasurementFile,
     };
   }
 }

packages/flutter_tools/lib/src/build_system/targets/android.dart

@@ -119,9 +119,9 @@ class DebugAndroidApplication extends AndroidAssetBundle {
   @override
   List<Source> get outputs => <Source>[
     ...super.outputs,
-    const Source.pattern('{OUTPUT_DIR}/vm_snapshot_data'),
-    const Source.pattern('{OUTPUT_DIR}/isolate_snapshot_data'),
-    const Source.pattern('{OUTPUT_DIR}/kernel_blob.bin'),
+    const Source.pattern('{OUTPUT_DIR}/flutter_assets/vm_snapshot_data'),
+    const Source.pattern('{OUTPUT_DIR}/flutter_assets/isolate_snapshot_data'),
+    const Source.pattern('{OUTPUT_DIR}/flutter_assets/kernel_blob.bin'),
   ];
 }
 

packages/flutter_tools/lib/src/build_system/targets/ios.dart

@@ -187,7 +187,7 @@ class DebugUniveralFramework extends Target {
 
   @override
   List<Source> get outputs => const <Source>[
-    Source.pattern('{BUILD_DIR}/App')
+    Source.pattern('{BUILD_DIR}/App.framework/App'),
   ];
 
   @override
@@ -200,7 +200,10 @@ class DebugUniveralFramework extends Target {
       ?? <DarwinArch>{DarwinArch.arm64};
     final File iphoneFile = environment.buildDir.childFile('iphone_framework');
     final File simulatorFile = environment.buildDir.childFile('simulator_framework');
-    final File lipoOutputFile = environment.buildDir.childFile('App');
+    final File lipoOutputFile = environment.buildDir
+      .childDirectory('App.framework')
+      .childFile('App');
+    lipoOutputFile.parent.createSync(recursive: true);
     final RunResult iphoneResult = await createStubAppFramework(
       iphoneFile,
       SdkType.iPhone,
@@ -250,7 +253,7 @@ abstract class IosAssetBundle extends Target {
 
   @override
   List<Source> get inputs => const <Source>[
-    Source.pattern('{BUILD_DIR}/App'),
+    Source.pattern('{BUILD_DIR}/App.framework/App'),
     Source.pattern('{PROJECT_DIR}/pubspec.yaml'),
     ...IconTreeShaker.inputs,
   ];
@@ -280,7 +283,9 @@ abstract class IosAssetBundle extends Target {
     // Only copy the prebuilt runtimes and kernel blob in debug mode.
     if (buildMode == BuildMode.debug) {
       // Copy the App.framework to the output directory.
-      environment.buildDir.childFile('App')
+      environment.buildDir
+        .childDirectory('App.framework')
+        .childFile('App')
         .copySync(frameworkDirectory.childFile('App').path);
 
       final String vmSnapshotData = globals.artifacts.getArtifactPath(Artifact.vmSnapshotData, mode: BuildMode.debug);

packages/flutter_tools/lib/src/commands/build_apk.dart

@@ -32,6 +32,7 @@ class BuildApkCommand extends BuildSubCommand {
     usesExtraFrontendOptions();
     addBundleSkSLPathOption(hide: !verboseHelp);
     addEnableExperimentation(hide: !verboseHelp);
+    addBuildPerformanceFile(hide: !verboseHelp);
     argParser
       ..addFlag('split-per-abi',
         negatable: false,

packages/flutter_tools/lib/src/commands/build_appbundle.dart

@@ -29,9 +29,9 @@ class BuildAppBundleCommand extends BuildSubCommand {
     usesDartDefineOption();
     usesExtraFrontendOptions();
     addBundleSkSLPathOption(hide: !verboseHelp);
-    argParser
-      ..addFlag('track-widget-creation', negatable: false, hide: !verboseHelp)
-      ..addMultiOption('target-platform',
+    addBuildPerformanceFile(hide: !verboseHelp);
+    usesTrackWidgetCreation(verboseHelp: verboseHelp);
+    argParser.addMultiOption('target-platform',
         splitCommas: true,
         defaultsTo: <String>['android-arm', 'android-arm64', 'android-x64'],
         allowed: <String>['android-arm', 'android-arm64', 'android-x64'],

packages/flutter_tools/lib/src/commands/build_ios.dart

@@ -32,6 +32,7 @@ class BuildIOSCommand extends BuildSubCommand {
     usesDartDefineOption();
     usesExtraFrontendOptions();
     addEnableExperimentation(hide: !verboseHelp);
+    addBuildPerformanceFile(hide: !verboseHelp);
     argParser
       ..addFlag('simulator',
         help: 'Build for the iOS simulator instead of the device.',

packages/flutter_tools/lib/src/commands/build_linux.dart

@@ -27,6 +27,7 @@ class BuildLinuxCommand extends BuildSubCommand {
     usesExtraFrontendOptions();
     addEnableExperimentation(hide: !verboseHelp);
     usesTrackWidgetCreation(verboseHelp: verboseHelp);
+    addBuildPerformanceFile(hide: !verboseHelp);
   }
 
   @override

packages/flutter_tools/lib/src/commands/build_macos.dart

@@ -28,6 +28,7 @@ class BuildMacosCommand extends BuildSubCommand {
     usesBuildNumberOption();
     usesBuildNameOption();
     addEnableExperimentation(hide: !verboseHelp);
+    addBuildPerformanceFile(hide: !verboseHelp);
   }
 
   @override

packages/flutter_tools/lib/src/commands/build_windows.dart

@@ -30,6 +30,7 @@ class BuildWindowsCommand extends BuildSubCommand {
     usesExtraFrontendOptions();
     addEnableExperimentation(hide: !verboseHelp);
     usesTrackWidgetCreation(verboseHelp: verboseHelp);
+    addBuildPerformanceFile(hide: !verboseHelp);
   }
 
   @override

packages/flutter_tools/lib/src/ios/xcodeproj.dart

@@ -166,16 +166,6 @@ List<String> _xcodeBuildSettingsLines({
     xcodeBuildSettings.add('FLUTTER_TARGET=$targetOverride');
   }
 
-  // This is an optional path to split debug info
-  if (buildInfo.splitDebugInfoPath != null) {
-    xcodeBuildSettings.add('SPLIT_DEBUG_INFO=${buildInfo.splitDebugInfoPath}');
-  }
-
-  // This is an optional path to obfuscate and output a mapping.
-  if (buildInfo.dartObfuscation) {
-    xcodeBuildSettings.add('DART_OBFUSCATION=true');
-  }
-
   // The build outputs directory, relative to FLUTTER_APPLICATION_PATH.
   xcodeBuildSettings.add('FLUTTER_BUILD_DIR=${buildDirOverride ?? getBuildDirectory()}');
 
@@ -226,31 +216,9 @@ List<String> _xcodeBuildSettingsLines({
     }
   }
 
-  if (buildInfo.trackWidgetCreation) {
-    xcodeBuildSettings.add('TRACK_WIDGET_CREATION=true');
-  }
-
-  if (buildInfo.treeShakeIcons) {
-    xcodeBuildSettings.add('TREE_SHAKE_ICONS=true');
-  }
-
-  if (buildInfo.dartDefines?.isNotEmpty ?? false) {
-    xcodeBuildSettings.add('DART_DEFINES=${buildInfo.dartDefines.join(',')}');
-  }
-
-  if (buildInfo.extraFrontEndOptions?.isNotEmpty ?? false) {
-    xcodeBuildSettings.add(
-      'EXTRA_FRONT_END_OPTIONS='
-      '${buildInfo.extraFrontEndOptions.join(',')}',
-    );
+  for (final MapEntry<String, String> config in buildInfo.toEnvironmentConfig().entries) {
+    xcodeBuildSettings.add('${config.key}=${config.value}');
   }
-  if (buildInfo.extraGenSnapshotOptions?.isNotEmpty ?? false) {
-    xcodeBuildSettings.add(
-      'EXTRA_GEN_SNAPSHOT_OPTIONS='
-      '${buildInfo.extraGenSnapshotOptions.join(',')}',
-    );
-  }
-
   return xcodeBuildSettings;
 }
 

packages/flutter_tools/lib/src/runner/flutter_command.dart

@@ -109,6 +109,7 @@ class FlutterOptions {
   static const String kDartObfuscationOption = 'obfuscate';
   static const String kDartDefinesOption = 'dart-define';
   static const String kBundleSkSLPathOption = 'bundle-sksl-path';
+  static const String kPerformanceMeasurementFile = 'performance-measurement-file';
 }
 
 abstract class FlutterCommand extends Command<void> {
@@ -495,6 +496,15 @@ abstract class FlutterCommand extends Command<void> {
     );
   }
 
+  void addBuildPerformanceFile({ bool hide = false }) {
+    argParser.addOption(
+      FlutterOptions.kPerformanceMeasurementFile,
+      help:
+        'The name of a file where flutter assemble performance and '
+        'cachedness information will be written in a JSON format.'
+    );
+  }
+
   set defaultBuildMode(BuildMode value) {
     _defaultBuildMode = value;
   }
@@ -602,6 +612,10 @@ abstract class FlutterCommand extends Command<void> {
       ? stringArg(FlutterOptions.kBundleSkSLPathOption)
       : null;
 
+    final String performanceMeasurementFile = argParser.options.containsKey(FlutterOptions.kPerformanceMeasurementFile)
+      ? stringArg(FlutterOptions.kPerformanceMeasurementFile)
+      : null;
+
     return BuildInfo(buildMode,
       argParser.options.containsKey('flavor')
         ? stringArg('flavor')
@@ -631,6 +645,7 @@ abstract class FlutterCommand extends Command<void> {
           : const <String>[],
       bundleSkSLPath: bundleSkSLPath,
       dartExperiments: experiments,
+      performanceMeasurementFile: performanceMeasurementFile,
     );
   }
 

packages/flutter_tools/test/general.shard/build_system/targets/ios_test.dart

@@ -100,7 +100,7 @@ void main() {
         environment.buildDir.childFile('iphone_framework').path,
         environment.buildDir.childFile('simulator_framework').path,
         '-output',
-        environment.buildDir.childFile('App').path,
+        environment.buildDir.childDirectory('App.framework').childFile('App').path,
       ]),
     ]);
 
@@ -127,7 +127,10 @@ void main() {
     // App kernel
     environment.buildDir.childFile('app.dill').createSync(recursive: true);
     // Stub framework
-    environment.buildDir.childFile('App').createSync();
+    environment.buildDir
+      .childDirectory('App.framework')
+      .childFile('App')
+      .createSync(recursive: true);
 
     await const DebugIosApplicationBundle().build(environment);
 

packages/flutter_tools/test/general.shard/commands/build_appbundle_test.dart

@@ -223,7 +223,7 @@ void main() {
           '-q',
           '-Ptarget-platform=android-arm,android-arm64,android-x64',
           '-Ptarget=${globals.fs.path.join(tempDir.path, 'flutter_project', 'lib', 'main.dart')}',
-          '-Ptrack-widget-creation=false',
+          '-Ptrack-widget-creation=true',
           '-Pshrink=true',
           'bundleRelease',
         ],
@@ -256,7 +256,7 @@ void main() {
           '-q',
           '-Ptarget-platform=android-arm,android-arm64,android-x64',
           '-Ptarget=${globals.fs.path.join(tempDir.path, 'flutter_project', 'lib', 'main.dart')}',
-          '-Ptrack-widget-creation=false',
+          '-Ptrack-widget-creation=true',
           'bundleRelease',
         ],
         workingDirectory: anyNamed('workingDirectory'),
@@ -279,7 +279,7 @@ void main() {
           '-q',
           '-Ptarget-platform=android-arm,android-arm64,android-x64',
           '-Ptarget=${globals.fs.path.join(tempDir.path, 'flutter_project', 'lib', 'main.dart')}',
-          '-Ptrack-widget-creation=false',
+          '-Ptrack-widget-creation=true',
           '-Pshrink=true',
           'bundleRelease',
         ],
@@ -346,7 +346,7 @@ void main() {
           '-q',
           '-Ptarget-platform=android-arm,android-arm64,android-x64',
           '-Ptarget=${globals.fs.path.join(tempDir.path, 'flutter_project', 'lib', 'main.dart')}',
-          '-Ptrack-widget-creation=false',
+          '-Ptrack-widget-creation=true',
           '-Pshrink=true',
           'assembleRelease',
         ],
@@ -402,7 +402,7 @@ void main() {
           '-q',
           '-Ptarget-platform=android-arm,android-arm64,android-x64',
           '-Ptarget=${globals.fs.path.join(tempDir.path, 'flutter_project', 'lib', 'main.dart')}',
-          '-Ptrack-widget-creation=false',
+          '-Ptrack-widget-creation=true',
           '-Pshrink=true',
           'assembleRelease',
         ],