Pass build mode-specific bytecode generation options to frontend_server. (#42471)

Fixes various Flutter framework test failures when bytecode is enabled.

packages/flutter_tools/bin/fuchsia_tester.dart

@@ -12,6 +12,7 @@ import 'package:flutter_tools/src/base/context.dart';
 import 'package:flutter_tools/src/base/file_system.dart';
 import 'package:flutter_tools/src/base/io.dart';
 import 'package:flutter_tools/src/base/platform.dart';
+import 'package:flutter_tools/src/build_info.dart';
 import 'package:flutter_tools/src/cache.dart';
 import 'package:flutter_tools/src/context_runner.dart';
 import 'package:flutter_tools/src/dart/package_map.dart';
@@ -146,6 +147,7 @@ Future<void> run(List<String> args) async {
       watcher: collector,
       ipv6: false,
       enableObservatory: collector != null,
+      buildMode: BuildMode.debug,
       precompiledDillFiles: tests,
       concurrency: math.max(1, platform.numberOfProcessors - 2),
       icudtlPath: fs.path.absolute(argResults[_kOptionIcudtl]),

packages/flutter_tools/lib/src/base/build.dart

@@ -308,9 +308,8 @@ class AOTSnapshotter {
       extraFrontEndOptions: extraFrontEndOptions,
       linkPlatformKernelIn: true,
       aot: true,
-      enableAsserts: buildMode == BuildMode.debug,
+      buildMode: buildMode,
       trackWidgetCreation: trackWidgetCreation,
-      targetProductVm: buildMode == BuildMode.release,
     ));
 
     // Write path to frontend_server, since things need to be re-generated when that changes.

packages/flutter_tools/lib/src/build_runner/build_runner.dart

@@ -139,7 +139,6 @@ class BuildRunner extends CodeGenerator {
     FlutterProject flutterProject, {
     String mainPath,
     bool linkPlatformKernelIn = false,
-    bool targetProductVm = false,
     bool trackWidgetCreation = false,
     List<String> extraFrontEndOptions = const <String> [],
   }) async {

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

@@ -212,10 +212,9 @@ class KernelSnapshot extends Target {
     final CompilerOutput output = await compiler.compile(
       sdkRoot: artifacts.getArtifactPath(Artifact.flutterPatchedSdkPath, mode: buildMode),
       aot: buildMode != BuildMode.debug,
-      enableAsserts: buildMode == BuildMode.debug,
+      buildMode: buildMode,
       trackWidgetCreation: buildMode == BuildMode.debug,
       targetModel: TargetModel.flutter,
-      targetProductVm: buildMode == BuildMode.release,
       outputFilePath: environment.buildDir.childFile('app.dill').path,
       packagesPath: packagesPath,
       linkPlatformKernelIn: buildMode == BuildMode.release,

packages/flutter_tools/lib/src/bundle.dart

@@ -106,7 +106,7 @@ class BundleBuilder {
         mainPath: fs.file(mainPath).absolute.path,
         outputFilePath: applicationKernelFilePath,
         depFilePath: depfilePath,
-        enableAsserts: buildMode == BuildMode.debug,
+        buildMode: buildMode,
         trackWidgetCreation: trackWidgetCreation,
         extraFrontEndOptions: extraFrontEndOptions,
         fileSystemRoots: fileSystemRoots,

packages/flutter_tools/lib/src/codegen.dart

@@ -8,6 +8,7 @@ import 'artifacts.dart';
 import 'base/context.dart';
 import 'base/file_system.dart';
 import 'base/platform.dart';
+import 'build_info.dart';
 import 'compile.dart';
 import 'dart/package_map.dart';
 import 'globals.dart';
@@ -95,11 +96,10 @@ class CodeGeneratingKernelCompiler implements KernelCompiler {
     String outputFilePath,
     bool linkPlatformKernelIn = false,
     bool aot = false,
-    bool enableAsserts = false,
+    @required BuildMode buildMode,
     bool causalAsyncStacks = true,
     bool trackWidgetCreation,
     List<String> extraFrontEndOptions,
-    bool targetProductVm = false,
     // These arguments are currently unused.
     String sdkRoot,
     String packagesPath,
@@ -133,11 +133,10 @@ class CodeGeneratingKernelCompiler implements KernelCompiler {
       outputFilePath: outputFilePath,
       linkPlatformKernelIn: linkPlatformKernelIn,
       aot: aot,
-      enableAsserts: enableAsserts,
+      buildMode: buildMode,
       causalAsyncStacks: causalAsyncStacks,
       trackWidgetCreation: trackWidgetCreation,
       extraFrontEndOptions: extraFrontEndOptions,
-      targetProductVm: targetProductVm,
       sdkRoot: sdkRoot,
       packagesPath: PackageMap.globalGeneratedPackagesPath,
       fileSystemRoots: <String>[
@@ -165,7 +164,7 @@ class CodeGeneratingResidentCompiler implements ResidentCompiler {
   /// codegen mode.
   static Future<ResidentCompiler> create({
     @required FlutterProject flutterProject,
-    bool enableAsserts = false,
+    @required BuildMode buildMode,
     bool trackWidgetCreation = false,
     CompilerMessageConsumer compilerMessageConsumer = printError,
     bool unsafePackageSerialization = false,
@@ -176,7 +175,7 @@ class CodeGeneratingResidentCompiler implements ResidentCompiler {
     codeGenerator.updatePackages(flutterProject);
     final ResidentCompiler residentCompiler = ResidentCompiler(
       artifacts.getArtifactPath(Artifact.flutterPatchedSdkPath),
-      enableAsserts: enableAsserts,
+      buildMode: buildMode,
       trackWidgetCreation: trackWidgetCreation,
       packagesPath: PackageMap.globalGeneratedPackagesPath,
       fileSystemRoots: <String>[

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

@@ -9,6 +9,7 @@ import '../asset.dart';
 import '../base/common.dart';
 import '../base/file_system.dart';
 import '../base/platform.dart';
+import '../build_info.dart';
 import '../bundle.dart';
 import '../cache.dart';
 import '../codegen.dart';
@@ -234,7 +235,7 @@ class TestCommand extends FastFlutterCommand {
       disableServiceAuthCodes: disableServiceAuthCodes,
       ipv6: argResults['ipv6'],
       machine: machine,
-      enableAsserts: true,
+      buildMode: BuildMode.debug,
       trackWidgetCreation: argResults['track-widget-creation'],
       updateGoldens: argResults['update-goldens'],
       concurrency: jobs,

packages/flutter_tools/lib/src/compile.dart

@@ -15,6 +15,7 @@ import 'base/io.dart';
 import 'base/platform.dart';
 import 'base/process_manager.dart';
 import 'base/terminal.dart';
+import 'build_info.dart';
 import 'codegen.dart';
 import 'convert.dart';
 import 'dart/package_map.dart';
@@ -238,6 +239,31 @@ class PackageUriMapper {
   }
 }
 
+List<String> _buildModeOptions(BuildMode mode) {
+  switch (mode) {
+    case BuildMode.debug:
+      return <String>[
+        '-Ddart.vm.profile=false',
+        '-Ddart.vm.product=false',
+        '--bytecode-options=source-positions,local-var-info,debugger-stops,instance-field-initializers,keep-unreachable-code,avoid-closure-call-instructions',
+        '--enable-asserts',
+      ];
+    case BuildMode.profile:
+      return <String>[
+        '-Ddart.vm.profile=true',
+        '-Ddart.vm.product=false',
+        '--bytecode-options=source-positions',
+      ];
+    case BuildMode.release:
+      return <String>[
+        '-Ddart.vm.profile=false',
+        '-Ddart.vm.product=true',
+        '--bytecode-options=source-positions',
+      ];
+  }
+  throw Exception('Unknown BuildMode: $mode');
+}
+
 class KernelCompiler {
   const KernelCompiler();
 
@@ -247,16 +273,15 @@ class KernelCompiler {
     String outputFilePath,
     String depFilePath,
     TargetModel targetModel = TargetModel.flutter,
+    @required BuildMode buildMode,
     bool linkPlatformKernelIn = false,
     bool aot = false,
-    bool enableAsserts = false,
     bool causalAsyncStacks = true,
     @required bool trackWidgetCreation,
     List<String> extraFrontEndOptions,
     String packagesPath,
     List<String> fileSystemRoots,
     String fileSystemScheme,
-    bool targetProductVm = false,
     String initializeFromDill,
     String platformDill,
   }) async {
@@ -288,19 +313,13 @@ class KernelCompiler {
       '--strong',
       '--target=$targetModel',
       '-Ddart.developer.causal_async_stacks=$causalAsyncStacks',
-      if (enableAsserts) '--enable-asserts',
+      ..._buildModeOptions(buildMode),
       if (trackWidgetCreation) '--track-widget-creation',
       if (!linkPlatformKernelIn) '--no-link-platform',
       if (aot) ...<String>[
         '--aot',
         '--tfa',
       ],
-      // If we're not targeting product (release) mode and we're still aot, then
-      // target profile mode.
-      if (targetProductVm)
-        '-Ddart.vm.product=true'
-      else if (aot)
-        '-Ddart.vm.profile=true',
       if (packagesPath != null) ...<String>[
         '--packages',
         packagesPath,
@@ -429,7 +448,7 @@ class _RejectRequest extends _CompilationRequest {
 class ResidentCompiler {
   ResidentCompiler(
     this._sdkRoot, {
-    bool enableAsserts = false,
+    @required BuildMode buildMode,
     bool causalAsyncStacks = true,
     bool trackWidgetCreation = false,
     String packagesPath,
@@ -441,7 +460,7 @@ class ResidentCompiler {
     bool unsafePackageSerialization,
     List<String> experimentalFlags,
   }) : assert(_sdkRoot != null),
-       _enableAsserts = enableAsserts,
+       _buildMode = buildMode,
        _causalAsyncStacks = causalAsyncStacks,
        _trackWidgetCreation = trackWidgetCreation,
        _packagesPath = packagesPath,
@@ -459,7 +478,7 @@ class ResidentCompiler {
     }
   }
 
-  final bool _enableAsserts;
+  final BuildMode _buildMode;
   final bool _causalAsyncStacks;
   final bool _trackWidgetCreation;
   final String _packagesPath;
@@ -586,7 +605,7 @@ class ResidentCompiler {
         '--packages',
         _packagesPath,
       ],
-      if (_enableAsserts) '--enable-asserts',
+      ..._buildModeOptions(_buildMode),
       if (_trackWidgetCreation) '--track-widget-creation',
       if (_fileSystemRoots != null)
         for (String root in _fileSystemRoots) ...<String>[

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

@@ -453,6 +453,7 @@ class IOSSimulator extends Device {
     return BundleBuilder().build(
       mainPath: mainPath,
       precompiledSnapshot: false,
+      buildMode: buildInfo.mode,
       trackWidgetCreation: buildInfo.trackWidgetCreation,
     );
   }

packages/flutter_tools/lib/src/resident_runner.dart

@@ -42,7 +42,7 @@ class FlutterDevice {
   }) : assert(trackWidgetCreation != null),
        generator = generator ?? ResidentCompiler(
          artifacts.getArtifactPath(Artifact.flutterPatchedSdkPath, mode: buildMode),
-         enableAsserts: buildMode == BuildMode.debug,
+         buildMode: buildMode,
          trackWidgetCreation: trackWidgetCreation,
          fileSystemRoots: fileSystemRoots,
          fileSystemScheme: fileSystemScheme,
@@ -67,11 +67,13 @@ class FlutterDevice {
     ResidentCompiler generator;
     if (flutterProject.hasBuilders) {
       generator = await CodeGeneratingResidentCompiler.create(
+        buildMode: buildMode,
         flutterProject: flutterProject,
       );
     } else {
       generator = ResidentCompiler(
         artifacts.getArtifactPath(Artifact.flutterPatchedSdkPath, mode: buildMode),
+        buildMode: buildMode,
         trackWidgetCreation: trackWidgetCreation,
         fileSystemRoots: fileSystemRoots,
         fileSystemScheme: fileSystemScheme,

packages/flutter_tools/lib/src/test/flutter_platform.dart

@@ -21,6 +21,7 @@ import '../base/file_system.dart';
 import '../base/io.dart';
 import '../base/platform.dart';
 import '../base/process_manager.dart';
+import '../build_info.dart';
 import '../compile.dart';
 import '../convert.dart';
 import '../dart/package_map.dart';
@@ -86,7 +87,7 @@ FlutterPlatform installHook({
   int port = 0,
   String precompiledDillPath,
   Map<String, String> precompiledDillFiles,
-  bool enableAsserts = false,
+  @required BuildMode buildMode,
   bool trackWidgetCreation = false,
   bool updateGoldens = false,
   bool buildTestAssets = false,
@@ -120,7 +121,7 @@ FlutterPlatform installHook({
     port: port,
     precompiledDillPath: precompiledDillPath,
     precompiledDillFiles: precompiledDillFiles,
-    enableAsserts: enableAsserts,
+    buildMode: buildMode,
     trackWidgetCreation: trackWidgetCreation,
     updateGoldens: updateGoldens,
     buildTestAssets: buildTestAssets,
@@ -260,7 +261,7 @@ class FlutterPlatform extends PlatformPlugin {
     this.port,
     this.precompiledDillPath,
     this.precompiledDillFiles,
-    this.enableAsserts,
+    @required this.buildMode,
     this.trackWidgetCreation,
     this.updateGoldens,
     this.buildTestAssets,
@@ -280,7 +281,7 @@ class FlutterPlatform extends PlatformPlugin {
   final int port;
   final String precompiledDillPath;
   final Map<String, String> precompiledDillFiles;
-  final bool enableAsserts;
+  final BuildMode buildMode;
   final bool trackWidgetCreation;
   final bool updateGoldens;
   final bool buildTestAssets;
@@ -455,7 +456,7 @@ class FlutterPlatform extends PlatformPlugin {
 
       if (precompiledDillPath == null && precompiledDillFiles == null) {
         // Lazily instantiate compiler so it is built only if it is actually used.
-        compiler ??= TestCompiler(enableAsserts, trackWidgetCreation, flutterProject);
+        compiler ??= TestCompiler(buildMode, trackWidgetCreation, flutterProject);
         mainDart = await compiler.compile(mainDart);
 
         if (mainDart == null) {

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

@@ -15,6 +15,7 @@ import '../base/file_system.dart';
 import '../base/io.dart';
 import '../base/process_manager.dart';
 import '../base/terminal.dart';
+import '../build_info.dart';
 import '../dart/package_map.dart';
 import '../globals.dart';
 import '../project.dart';
@@ -36,7 +37,7 @@ Future<int> runTests(
   bool machine = false,
   String precompiledDillPath,
   Map<String, String> precompiledDillFiles,
-  bool enableAsserts = false,
+  @required BuildMode buildMode,
   bool trackWidgetCreation = false,
   bool updateGoldens = false,
   TestWatcher watcher,
@@ -114,7 +115,7 @@ Future<int> runTests(
     serverType: serverType,
     precompiledDillPath: precompiledDillPath,
     precompiledDillFiles: precompiledDillFiles,
-    enableAsserts: enableAsserts,
+    buildMode: buildMode,
     trackWidgetCreation: trackWidgetCreation,
     updateGoldens: updateGoldens,
     buildTestAssets: buildTestAssets,

packages/flutter_tools/lib/src/test/test_compiler.dart

@@ -37,7 +37,7 @@ class TestCompiler {
   ///
   /// [flutterProject] is the project for which we are running tests.
   TestCompiler(
-    this.enableAsserts,
+    this.buildMode,
     this.trackWidgetCreation,
     this.flutterProject,
   ) : testFilePath = getKernelPathForTransformerOptions(
@@ -60,7 +60,7 @@ class TestCompiler {
   final StreamController<_CompilationRequest> compilerController = StreamController<_CompilationRequest>();
   final List<_CompilationRequest> compilationQueue = <_CompilationRequest>[];
   final FlutterProject flutterProject;
-  final bool enableAsserts;
+  final BuildMode buildMode;
   final bool trackWidgetCreation;
   final String testFilePath;
 
@@ -96,7 +96,7 @@ class TestCompiler {
     if (flutterProject.hasBuilders) {
       return CodeGeneratingResidentCompiler.create(
         flutterProject: flutterProject,
-        enableAsserts: enableAsserts,
+        buildMode: buildMode,
         trackWidgetCreation: trackWidgetCreation,
         compilerMessageConsumer: _reportCompilerMessage,
         initializeFromDill: testFilePath,
@@ -108,7 +108,7 @@ class TestCompiler {
     return ResidentCompiler(
       artifacts.getArtifactPath(Artifact.flutterPatchedSdkPath),
       packagesPath: PackageMap.globalPackagesPath,
-      enableAsserts: enableAsserts,
+      buildMode: buildMode,
       trackWidgetCreation: trackWidgetCreation,
       compilerMessageConsumer: _reportCompilerMessage,
       initializeFromDill: testFilePath,

packages/flutter_tools/lib/src/tester/flutter_tester.dart

@@ -149,6 +149,7 @@ class FlutterTesterDevice extends Device {
       assetDirPath: assetDirPath,
       applicationKernelFilePath: applicationKernelFilePath,
       precompiledSnapshot: false,
+      buildMode: buildInfo.mode,
       trackWidgetCreation: buildInfo.trackWidgetCreation,
     );
     command.add('--flutter-assets-dir=$assetDirPath');

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

@@ -128,13 +128,12 @@ flutter_tools:lib/''');
       targetModel: anyNamed('targetModel'),
       linkPlatformKernelIn: anyNamed('linkPlatformKernelIn'),
       aot: anyNamed('aot'),
-      enableAsserts: anyNamed('enableAsserts'),
+      buildMode: anyNamed('buildMode'),
       trackWidgetCreation: anyNamed('trackWidgetCreation'),
       extraFrontEndOptions: anyNamed('extraFrontEndOptions'),
       packagesPath: anyNamed('packagesPath'),
       fileSystemRoots: anyNamed('fileSystemRoots'),
       fileSystemScheme: anyNamed('fileSystemScheme'),
-      targetProductVm: anyNamed('targetProductVm'),
       platformDill: anyNamed('platformDill'),
       initializeFromDill: anyNamed('initializeFromDill'),
     )).thenAnswer((Invocation invocation) async {
@@ -153,10 +152,9 @@ flutter_tools:lib/''');
     when(mockKernelCompiler.compile(
       sdkRoot: anyNamed('sdkRoot'),
       aot: anyNamed('aot'),
-      enableAsserts: anyNamed('enableAsserts'),
+      buildMode: anyNamed('buildMode'),
       trackWidgetCreation: false,
       targetModel: anyNamed('targetModel'),
-      targetProductVm: anyNamed('targetProductVm'),
       outputFilePath: anyNamed('outputFilePath'),
       depFilePath: anyNamed('depFilePath'),
       packagesPath: anyNamed('packagesPath'),
@@ -178,10 +176,9 @@ flutter_tools:lib/''');
     when(mockKernelCompiler.compile(
       sdkRoot: anyNamed('sdkRoot'),
       aot: anyNamed('aot'),
-      enableAsserts: anyNamed('enableAsserts'),
+      buildMode: anyNamed('buildMode'),
       trackWidgetCreation: true,
       targetModel: anyNamed('targetModel'),
-      targetProductVm: anyNamed('targetProductVm'),
       outputFilePath: anyNamed('outputFilePath'),
       depFilePath: anyNamed('depFilePath'),
       packagesPath: anyNamed('packagesPath'),
@@ -391,14 +388,13 @@ class FakeKernelCompiler implements KernelCompiler {
     TargetModel targetModel = TargetModel.flutter,
     bool linkPlatformKernelIn = false,
     bool aot = false,
-    bool enableAsserts = false,
+    BuildMode buildMode,
     bool causalAsyncStacks = true,
     bool trackWidgetCreation,
     List<String> extraFrontEndOptions,
     String packagesPath,
     List<String> fileSystemRoots,
     String fileSystemScheme,
-    bool targetProductVm = false,
     String platformDill,
     String initializeFromDill,
   }) async {

packages/flutter_tools/test/general.shard/compile_batch_test.dart

@@ -8,6 +8,7 @@ import 'package:flutter_tools/src/base/io.dart';
 import 'package:flutter_tools/src/base/logger.dart';
 import 'package:flutter_tools/src/base/platform.dart';
 import 'package:flutter_tools/src/base/terminal.dart';
+import 'package:flutter_tools/src/build_info.dart';
 import 'package:flutter_tools/src/compile.dart';
 import 'package:flutter_tools/src/convert.dart';
 import 'package:flutter_tools/src/globals.dart';
@@ -52,7 +53,7 @@ void main() {
     final KernelCompiler kernelCompiler = await kernelCompilerFactory.create(null);
     final CompilerOutput output = await kernelCompiler.compile(sdkRoot: '/path/to/sdkroot',
       mainPath: '/path/to/main.dart',
-      enableAsserts: true,
+      buildMode: BuildMode.debug,
       trackWidgetCreation: false,
     );
 
@@ -76,7 +77,7 @@ void main() {
     final KernelCompiler kernelCompiler = await kernelCompilerFactory.create(null);
     final CompilerOutput output = await kernelCompiler.compile(sdkRoot: '/path/to/sdkroot',
       mainPath: '/path/to/main.dart',
-      enableAsserts: true,
+      buildMode: BuildMode.debug,
       trackWidgetCreation: false,
     );
 
@@ -103,7 +104,7 @@ void main() {
     final CompilerOutput output = await kernelCompiler.compile(
       sdkRoot: '/path/to/sdkroot',
       mainPath: '/path/to/main.dart',
-      enableAsserts: true,
+      buildMode: BuildMode.debug,
       trackWidgetCreation: false,
     );
     expect(mockFrontendServerStdIn.getAndClear(), isEmpty);

packages/flutter_tools/test/general.shard/compile_expression_test.dart

@@ -9,6 +9,7 @@ import 'package:flutter_tools/src/base/io.dart';
 import 'package:flutter_tools/src/base/logger.dart';
 import 'package:flutter_tools/src/base/platform.dart';
 import 'package:flutter_tools/src/base/terminal.dart';
+import 'package:flutter_tools/src/build_info.dart';
 import 'package:flutter_tools/src/compile.dart';
 import 'package:flutter_tools/src/convert.dart';
 import 'package:flutter_tools/src/globals.dart';
@@ -28,7 +29,7 @@ void main() {
   StreamController<String> stdErrStreamController;
 
   setUp(() {
-    generator = ResidentCompiler('sdkroot');
+    generator = ResidentCompiler('sdkroot',  buildMode: BuildMode.debug);
     mockProcessManager = MockProcessManager();
     mockFrontendServer = MockProcess();
     mockFrontendServerStdIn = MockStdIn();

packages/flutter_tools/test/general.shard/compile_incremental_test.dart

@@ -10,6 +10,7 @@ import 'package:flutter_tools/src/base/io.dart';
 import 'package:flutter_tools/src/base/logger.dart';
 import 'package:flutter_tools/src/base/platform.dart';
 import 'package:flutter_tools/src/base/terminal.dart';
+import 'package:flutter_tools/src/build_info.dart';
 import 'package:flutter_tools/src/compile.dart';
 import 'package:flutter_tools/src/convert.dart';
 import 'package:flutter_tools/src/globals.dart';
@@ -29,7 +30,7 @@ void main() {
   StreamController<String> stdErrStreamController;
 
   setUp(() {
-    generator = ResidentCompiler('sdkroot');
+    generator = ResidentCompiler('sdkroot', buildMode: BuildMode.debug);
     mockProcessManager = MockProcessManager();
     mockFrontendServer = MockProcess();
     mockFrontendServerStdIn = MockStdIn();

packages/flutter_tools/test/general.shard/flutter_platform_test.dart

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+import 'package:flutter_tools/src/build_info.dart';
 import 'package:flutter_tools/src/base/common.dart';
 import 'package:flutter_tools/src/base/io.dart';
 import 'package:flutter_tools/src/base/platform.dart';
@@ -18,13 +19,13 @@ import '../src/context.dart';
 void main() {
   group('FlutterPlatform', () {
     testUsingContext('ensureConfiguration throws an error if an explicitObservatoryPort is specified and more than one test file', () async {
-      final FlutterPlatform flutterPlatform = FlutterPlatform(shellPath: '/', explicitObservatoryPort: 1234);
+      final FlutterPlatform flutterPlatform = FlutterPlatform(buildMode: BuildMode.debug, shellPath: '/', explicitObservatoryPort: 1234);
       flutterPlatform.loadChannel('test1.dart', MockSuitePlatform());
       expect(() => flutterPlatform.loadChannel('test2.dart', MockSuitePlatform()), throwsA(isA<ToolExit>()));
     });
 
     testUsingContext('ensureConfiguration throws an error if a precompiled entrypoint is specified and more that one test file', () {
-      final FlutterPlatform flutterPlatform = FlutterPlatform(shellPath: '/', precompiledDillPath: 'example.dill');
+      final FlutterPlatform flutterPlatform = FlutterPlatform(buildMode: BuildMode.debug, shellPath: '/', precompiledDillPath: 'example.dill');
       flutterPlatform.loadChannel('test1.dart', MockSuitePlatform());
       expect(() => flutterPlatform.loadChannel('test2.dart', MockSuitePlatform()), throwsA(isA<ToolExit>()));
     });
@@ -86,12 +87,14 @@ void main() {
 
     testUsingContext('installHook creates a FlutterPlatform', () {
       expect(() => installHook(
+        buildMode: BuildMode.debug,
         shellPath: 'abc',
         enableObservatory: false,
         startPaused: true,
       ), throwsA(isA<AssertionError>()));
 
       expect(() => installHook(
+        buildMode: BuildMode.debug,
         shellPath: 'abc',
         enableObservatory: false,
         startPaused: false,
@@ -109,7 +112,7 @@ void main() {
         port: 100,
         precompiledDillPath: 'def',
         precompiledDillFiles: expectedPrecompiledDillFiles,
-        enableAsserts: true,
+        buildMode: BuildMode.debug,
         trackWidgetCreation: true,
         updateGoldens: true,
         buildTestAssets: true,
@@ -131,7 +134,7 @@ void main() {
       expect(flutterPlatform.explicitObservatoryPort, equals(200));
       expect(flutterPlatform.precompiledDillPath, equals('def'));
       expect(flutterPlatform.precompiledDillFiles, expectedPrecompiledDillFiles);
-      expect(flutterPlatform.enableAsserts, equals(true));
+      expect(flutterPlatform.buildMode, equals(BuildMode.debug));
       expect(flutterPlatform.trackWidgetCreation, equals(true));
       expect(flutterPlatform.updateGoldens, equals(true));
       expect(flutterPlatform.buildTestAssets, equals(true));
@@ -153,6 +156,7 @@ class MockHttpServer extends Mock implements HttpServer {}
 // Uses a mock HttpServer. We don't want to bind random ports in our CI hosts.
 class TestFlutterPlatform extends FlutterPlatform {
   TestFlutterPlatform() : super(
+    buildMode: BuildMode.debug,
     shellPath: '/',
     precompiledDillPath: 'example.dill',
     host: InternetAddress.loopbackIPv6,

packages/flutter_tools/test/general.shard/test_compiler_test.dart

@@ -3,6 +3,7 @@
 // found in the LICENSE file.
 
 import 'package:flutter_tools/src/base/file_system.dart';
+import 'package:flutter_tools/src/build_info.dart';
 import 'package:flutter_tools/src/compile.dart';
 import 'package:flutter_tools/src/project.dart';
 import 'package:flutter_tools/src/test/test_compiler.dart';
@@ -25,7 +26,7 @@ void main() {
           fs.file('test/foo.dart').createSync(recursive: true);
           residentCompiler = MockResidentCompiler();
           testCompiler = FakeTestCompiler(
-            true,
+            BuildMode.debug,
             false,
             FlutterProject.current(),
             residentCompiler,
@@ -76,11 +77,11 @@ void main() {
 /// Override the creation of the Resident Compiler to simplify testing.
 class FakeTestCompiler extends TestCompiler {
   FakeTestCompiler(
-    bool enableAsserts,
+    BuildMode buildMode,
     bool trackWidgetCreation,
     FlutterProject flutterProject,
     this.residentCompiler,
-  ) : super(enableAsserts, trackWidgetCreation, flutterProject);
+  ) : super(buildMode, trackWidgetCreation, flutterProject);
 
   final MockResidentCompiler residentCompiler;
 

packages/flutter_tools/test/general.shard/tester/flutter_tester_test.dart

@@ -134,7 +134,10 @@ void main() {
         mockArtifacts = MockArtifacts();
         final String artifactPath = fs.path.join(flutterRoot, 'artifact');
         fs.file(artifactPath).createSync(recursive: true);
-        when(mockArtifacts.getArtifactPath(any)).thenReturn(artifactPath);
+        when(mockArtifacts.getArtifactPath(
+          any,
+          mode: anyNamed('mode')
+        )).thenReturn(artifactPath);
 
         mockKernelCompiler = MockKernelCompiler();
       });
@@ -170,7 +173,7 @@ Hello!
           mainPath: anyNamed('mainPath'),
           outputFilePath: anyNamed('outputFilePath'),
           depFilePath: anyNamed('depFilePath'),
-          enableAsserts: anyNamed('enableAsserts'),
+          buildMode: BuildMode.debug,
           trackWidgetCreation: anyNamed('trackWidgetCreation'),
           extraFrontEndOptions: anyNamed('extraFrontEndOptions'),
           fileSystemRoots: anyNamed('fileSystemRoots'),