flutter/packages/flutter_tools/test/general.shard/resident_runner_test.dart

// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

import 'dart:async';

import 'package:dds/dds.dart' as dds;
import 'package:file/memory.dart';
import 'package:file_testing/file_testing.dart';
import 'package:flutter_tools/src/artifacts.dart';
import 'package:flutter_tools/src/base/command_help.dart';
import 'package:flutter_tools/src/base/common.dart';
import 'package:flutter_tools/src/base/dds.dart';
import 'package:flutter_tools/src/base/file_system.dart';
import 'package:flutter_tools/src/base/io.dart' as io;
import 'package:flutter_tools/src/base/logger.dart';
import 'package:flutter_tools/src/base/platform.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/devfs.dart';
import 'package:flutter_tools/src/device.dart';
import 'package:flutter_tools/src/features.dart';
import 'package:flutter_tools/src/globals.dart' as globals;
import 'package:flutter_tools/src/project.dart';
import 'package:flutter_tools/src/reporting/reporting.dart';
import 'package:flutter_tools/src/resident_devtools_handler.dart';
import 'package:flutter_tools/src/resident_runner.dart';
import 'package:flutter_tools/src/run_cold.dart';
import 'package:flutter_tools/src/run_hot.dart';
import 'package:flutter_tools/src/version.dart';
import 'package:flutter_tools/src/vmservice.dart';
import 'package:unified_analytics/testing.dart';
import 'package:unified_analytics/unified_analytics.dart';
import 'package:vm_service/vm_service.dart' as vm_service;

import '../src/common.dart';
import '../src/context.dart';
import '../src/fake_vm_services.dart';
import '../src/fakes.dart';
import '../src/testbed.dart';
import 'resident_runner_helpers.dart';

void main() {
  late Testbed testbed;
  late FakeFlutterDevice flutterDevice;
  late FakeDevFS devFS;
  late ResidentRunner residentRunner;
  late FakeDevice device;
  late FakeAnalytics fakeAnalytics;
  FakeVmServiceHost? fakeVmServiceHost;

  setUp(() {
    testbed = Testbed(setup: () {
      fakeAnalytics = getInitializedFakeAnalyticsInstance(
        fs: globals.fs,
        fakeFlutterVersion: FakeFlutterVersion(),
      );

      globals.fs.file('.packages')
        .writeAsStringSync('\n');
      globals.fs.file(globals.fs.path.join('build', 'app.dill'))
        ..createSync(recursive: true)
        ..writeAsStringSync('ABC');
      residentRunner = HotRunner(
        <FlutterDevice>[
          flutterDevice,
        ],
        stayResident: false,
        debuggingOptions: DebuggingOptions.enabled(BuildInfo.debug),
        target: 'main.dart',
        devtoolsHandler: createNoOpHandler,
        analytics: fakeAnalytics,
      );
    });
    device = FakeDevice();
    devFS = FakeDevFS();
    flutterDevice = FakeFlutterDevice()
      ..testUri = testUri
      ..vmServiceHost = (() => fakeVmServiceHost)
      ..device = device
      ..fakeDevFS = devFS;
  });

  testUsingContext('ResidentRunner can attach to device successfully', () => testbed.run(() async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[
      listViews,
      listViews,
    ]);
    final Completer<DebugConnectionInfo> futureConnectionInfo = Completer<DebugConnectionInfo>.sync();
    final Completer<void> futureAppStart = Completer<void>.sync();
    final Future<int?> result = residentRunner.attach(
      appStartedCompleter: futureAppStart,
      connectionInfoCompleter: futureConnectionInfo,
      enableDevTools: true,
    );
    final Future<DebugConnectionInfo> connectionInfo = futureConnectionInfo.future;

    expect(await result, 0);
    expect(futureConnectionInfo.isCompleted, true);
    expect((await connectionInfo).baseUri, 'foo://bar');
    expect(futureAppStart.isCompleted, true);
    expect(fakeVmServiceHost?.hasRemainingExpectations, false);
  }));

  testUsingContext('ResidentRunner suppresses errors for the initial compilation', () => testbed.run(() async {
    globals.fs.file(globals.fs.path.join('lib', 'main.dart'))
      .createSync(recursive: true);
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[
      listViews,
      listViews,
    ]);
    final FakeResidentCompiler residentCompiler = FakeResidentCompiler()
      ..nextOutput = const CompilerOutput('foo', 0 ,<Uri>[]);
    residentRunner = HotRunner(
      <FlutterDevice>[
        flutterDevice,
      ],
      stayResident: false,
      debuggingOptions: DebuggingOptions.enabled(BuildInfo.debug),
      target: 'main.dart',
      devtoolsHandler: createNoOpHandler,
      analytics: fakeAnalytics,
    );
    flutterDevice.generator = residentCompiler;

    expect(await residentRunner.run(enableDevTools: true), 0);
    expect(residentCompiler.didSuppressErrors, true);
    expect(fakeVmServiceHost?.hasRemainingExpectations, false);
  }));

  // Regression test for https://github.com/flutter/flutter/issues/60613
  testUsingContext('ResidentRunner calls appFailedToStart if initial compilation fails', () => testbed.run(() async {
    globals.fs.file(globals.fs.path.join('lib', 'main.dart'))
      .createSync(recursive: true);
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[]);
    final FakeResidentCompiler residentCompiler = FakeResidentCompiler()
      ..nextOutput = const CompilerOutput('foo', 1 ,<Uri>[]);
    residentRunner = HotRunner(
      <FlutterDevice>[
        flutterDevice,
      ],
      stayResident: false,
      debuggingOptions: DebuggingOptions.enabled(BuildInfo.debug),
      target: 'main.dart',
      devtoolsHandler: createNoOpHandler,
      analytics: fakeAnalytics,
    );
    flutterDevice.generator = residentCompiler;

    expect(await residentRunner.run(), 1);
    // Completing this future ensures that the daemon can exit correctly.
    expect(await residentRunner.waitForAppToFinish(), 1);
  }));

  // Regression test for https://github.com/flutter/flutter/issues/60613
  testUsingContext('ResidentRunner calls appFailedToStart if initial compilation fails - cold mode', () => testbed.run(() async {
    globals.fs.file(globals.fs.path.join('lib', 'main.dart'))
      .createSync(recursive: true);
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[]);
    residentRunner = ColdRunner(
      <FlutterDevice>[
        flutterDevice,
      ],
      stayResident: false,
      debuggingOptions: DebuggingOptions.enabled(BuildInfo.release),
      target: 'main.dart',
      devtoolsHandler: createNoOpHandler,
    );
    flutterDevice.runColdCode = 1;

    expect(await residentRunner.run(), 1);
    // Completing this future ensures that the daemon can exit correctly.
    expect(await residentRunner.waitForAppToFinish(), 1);
  }));

  // Regression test for https://github.com/flutter/flutter/issues/60613
  testUsingContext('ResidentRunner calls appFailedToStart if exception is thrown - cold mode', () => testbed.run(() async {
    globals.fs.file(globals.fs.path.join('lib', 'main.dart'))
      .createSync(recursive: true);
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[]);
    residentRunner = ColdRunner(
      <FlutterDevice>[
        flutterDevice,
      ],
      stayResident: false,
      debuggingOptions: DebuggingOptions.enabled(BuildInfo.release),
      target: 'main.dart',
      devtoolsHandler: createNoOpHandler,
    );
    flutterDevice.runColdError = Exception('BAD STUFF');


    expect(await residentRunner.run(), 1);
    // Completing this future ensures that the daemon can exit correctly.
    expect(await residentRunner.waitForAppToFinish(), 1);
  }));

  testUsingContext('ResidentRunner does not suppressErrors if running with an applicationBinary', () => testbed.run(() async {
    globals.fs.file(globals.fs.path.join('lib', 'main.dart'))
      .createSync(recursive: true);
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[
      listViews,
      listViews,
    ]);
    final FakeResidentCompiler residentCompiler = FakeResidentCompiler()
      ..nextOutput = const CompilerOutput('foo', 0 ,<Uri>[]);
    residentRunner = HotRunner(
      <FlutterDevice>[
        flutterDevice,
      ],
      applicationBinary: globals.fs.file('app-debug.apk'),
      stayResident: false,
      debuggingOptions: DebuggingOptions.enabled(BuildInfo.debug),
      target: 'main.dart',
      devtoolsHandler: createNoOpHandler,
      analytics: fakeAnalytics,
    );
    flutterDevice.generator = residentCompiler;

    expect(await residentRunner.run(enableDevTools: true), 0);
    expect(residentCompiler.didSuppressErrors, false);
    expect(fakeVmServiceHost?.hasRemainingExpectations, false);
  }));

  testUsingContext('ResidentRunner can attach to device successfully with --fast-start', () => testbed.run(() async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[
      listViews,
      listViews,
      listViews,
      FakeVmServiceRequest(
        method: 'getIsolate',
        args: <String, Object?>{
          'isolateId': fakeUnpausedIsolate.id,
        },
        jsonResponse: fakeUnpausedIsolate.toJson(),
      ),
      FakeVmServiceRequest(
        method: 'getVM',
        jsonResponse: vm_service.VM.parse(<String, Object>{})!.toJson(),
      ),
      listViews,
      const FakeVmServiceRequest(
        method: 'streamListen',
        args: <String, Object>{
          'streamId': 'Isolate',
        }
      ),
      FakeVmServiceRequest(
        method: kRunInViewMethod,
        args: <String, Object>{
          'viewId': fakeFlutterView.id,
          'mainScript': 'main.dart.dill',
          'assetDirectory': 'build/flutter_assets',
        }
      ),
      FakeVmServiceStreamResponse(
        streamId: 'Isolate',
        event: vm_service.Event(
          timestamp: 0,
          kind: vm_service.EventKind.kIsolateRunnable,
        )
      ),
    ]);
    residentRunner = HotRunner(
      <FlutterDevice>[
        flutterDevice,
      ],
      stayResident: false,
      debuggingOptions: DebuggingOptions.enabled(
        BuildInfo.debug,
        fastStart: true,
        startPaused: true,
      ),
      target: 'main.dart',
      devtoolsHandler: createNoOpHandler,
      analytics: fakeAnalytics,
    );
    final Completer<DebugConnectionInfo> futureConnectionInfo = Completer<DebugConnectionInfo>.sync();
    final Completer<void> futureAppStart = Completer<void>.sync();
    final Future<int?> result = residentRunner.attach(
      appStartedCompleter: futureAppStart,
      connectionInfoCompleter: futureConnectionInfo,
      enableDevTools: true,
    );
    final Future<DebugConnectionInfo> connectionInfo = futureConnectionInfo.future;

    expect(await result, 0);
    expect(futureConnectionInfo.isCompleted, true);
    expect((await connectionInfo).baseUri, 'foo://bar');
    expect(futureAppStart.isCompleted, true);
    expect(fakeVmServiceHost?.hasRemainingExpectations, false);
  }));

  testUsingContext('ResidentRunner can handle an RPC exception from hot reload', () => testbed.run(() async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[
      listViews,
      listViews,
      listViews,
    ]);
    final Completer<DebugConnectionInfo> futureConnectionInfo = Completer<DebugConnectionInfo>.sync();
    final Completer<void> futureAppStart = Completer<void>.sync();
    unawaited(residentRunner.attach(
      appStartedCompleter: futureAppStart,
      connectionInfoCompleter: futureConnectionInfo,
      enableDevTools: true,
    ));
    await futureAppStart.future;
    flutterDevice.reportError = vm_service.RPCError('something bad happened', 666, '');

    final OperationResult result = await residentRunner.restart();
    expect(result.fatal, true);
    expect(result.code, 1);
    expect((globals.flutterUsage as TestUsage).events, contains(
      TestUsageEvent('hot', 'exception', parameters: CustomDimensions(
        hotEventTargetPlatform: getNameForTargetPlatform(TargetPlatform.android_arm),
        hotEventSdkName: 'Android',
        hotEventEmulator: false,
        hotEventFullRestart: false,
      )),
    ));
    expect(fakeAnalytics.sentEvents, contains(
      Event.hotRunnerInfo(
        label: 'exception',
        targetPlatform: getNameForTargetPlatform(TargetPlatform.android_arm),
        sdkName: 'Android',
        emulator: false,
        fullRestart: false,
      ),
    ));
    expect(fakeVmServiceHost?.hasRemainingExpectations, false);
  }, overrides: <Type, Generator>{
    Usage: () => TestUsage(),
  }));

  testUsingContext('ResidentRunner can handle an RPC exception from debugFrameJankMetrics', () => testbed.run(() async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[
      listViews,
      listViews,
      listViews,
      renderFrameRasterStats,
    ]);
    final Completer<DebugConnectionInfo> futureConnectionInfo = Completer<DebugConnectionInfo>.sync();
    final Completer<void> futureAppStart = Completer<void>.sync();
    unawaited(residentRunner.attach(
      appStartedCompleter: futureAppStart,
      connectionInfoCompleter: futureConnectionInfo,
      enableDevTools: true,
    ));
    await futureAppStart.future;

    final bool result = await residentRunner.debugFrameJankMetrics();
    expect(result, true);
    expect((globals.flutterUsage as TestUsage).events, isEmpty);
    expect(fakeAnalytics.sentEvents, isEmpty);
    expect(fakeVmServiceHost?.hasRemainingExpectations, false);
    expect((globals.logger as BufferLogger).warningText, contains('Unable to get jank metrics for Impeller renderer'));
  }, overrides: <Type, Generator>{
    Usage: () => TestUsage(),
  }));

  testUsingContext('ResidentRunner fails its operation if the device initialization is not complete', () => testbed.run(() async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[
      listViews,
      listViews,
    ]);
    final Completer<DebugConnectionInfo> futureConnectionInfo = Completer<DebugConnectionInfo>.sync();
    final Completer<void> futureAppStart = Completer<void>.sync();
    unawaited(residentRunner.attach(
      appStartedCompleter: futureAppStart,
      connectionInfoCompleter: futureConnectionInfo,
    ));
    await futureAppStart.future;
    flutterDevice.fakeDevFS = null;

    final OperationResult result = await residentRunner.restart();
    expect(result.fatal, false);
    expect(result.code, 1);
    expect(result.message, contains('Device initialization has not completed.'));
    expect(fakeVmServiceHost?.hasRemainingExpectations, false);
  }));

  testUsingContext('ResidentRunner can handle an reload-barred exception from hot reload', () => testbed.run(() async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[
      listViews,
      listViews,
      listViews,
    ]);
    final Completer<DebugConnectionInfo> futureConnectionInfo = Completer<DebugConnectionInfo>.sync();
    final Completer<void> futureAppStart = Completer<void>.sync();
    unawaited(residentRunner.attach(
      appStartedCompleter: futureAppStart,
      connectionInfoCompleter: futureConnectionInfo,
      enableDevTools: true,
    ));
    await futureAppStart.future;
    flutterDevice.reportError = vm_service.RPCError('something bad happened', kIsolateReloadBarred, '');

    final OperationResult result = await residentRunner.restart();
    expect(result.fatal, true);
    expect(result.code, kIsolateReloadBarred);
    expect(result.message, contains('Unable to hot reload application due to an unrecoverable error'));

    expect((globals.flutterUsage as TestUsage).events, contains(
      TestUsageEvent('hot', 'reload-barred', parameters: CustomDimensions(
        hotEventTargetPlatform: getNameForTargetPlatform(TargetPlatform.android_arm),
        hotEventSdkName: 'Android',
        hotEventEmulator: false,
        hotEventFullRestart: false,
      )),
    ));
    expect(fakeAnalytics.sentEvents, contains(
      Event.hotRunnerInfo(
        label: 'reload-barred',
        targetPlatform: getNameForTargetPlatform(TargetPlatform.android_arm),
        sdkName: 'Android',
        emulator: false,
        fullRestart: false,
      )
    ));
    expect(fakeVmServiceHost?.hasRemainingExpectations, false);
  }, overrides: <Type, Generator>{
    Usage: () => TestUsage(),
  }));

  testUsingContext('ResidentRunner reports hot reload event with null safety analytics', () => testbed.run(() async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[
      listViews,
      listViews,
      listViews,
    ]);
    residentRunner = HotRunner(
      <FlutterDevice>[
        flutterDevice,
      ],
      stayResident: false,
      target: 'main.dart',
      debuggingOptions: DebuggingOptions.enabled(const BuildInfo(
        BuildMode.debug, '', treeShakeIcons: false, extraFrontEndOptions: <String>[
        '--enable-experiment=non-nullable',
        ],
      )),
      devtoolsHandler: createNoOpHandler,
      analytics: fakeAnalytics,
    );
    final Completer<DebugConnectionInfo> futureConnectionInfo = Completer<DebugConnectionInfo>.sync();
    final Completer<void> futureAppStart = Completer<void>.sync();
    unawaited(residentRunner.attach(
      appStartedCompleter: futureAppStart,
      connectionInfoCompleter: futureConnectionInfo,
      enableDevTools: true,
    ));
    await futureAppStart.future;
    flutterDevice.reportError = vm_service.RPCError('something bad happened', 666, '');

    final OperationResult result = await residentRunner.restart();
    expect(result.fatal, true);
    expect(result.code, 1);

    expect((globals.flutterUsage as TestUsage).events, contains(
      TestUsageEvent('hot', 'exception', parameters: CustomDimensions(
        hotEventTargetPlatform: getNameForTargetPlatform(TargetPlatform.android_arm),
        hotEventSdkName: 'Android',
        hotEventEmulator: false,
        hotEventFullRestart: false,
      )),
    ));
    expect(fakeAnalytics.sentEvents, contains(
      Event.hotRunnerInfo(
        label: 'exception',
        targetPlatform: getNameForTargetPlatform(TargetPlatform.android_arm),
        sdkName: 'Android',
        emulator: false,
        fullRestart: false,
      )
    ));
    expect(fakeVmServiceHost?.hasRemainingExpectations, false);
  }, overrides: <Type, Generator>{
    Usage: () => TestUsage(),
  }));

  testUsingContext('ResidentRunner does not reload sources if no sources changed', () => testbed.run(() async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[
      listViews,
      listViews,
      listViews,
      FakeVmServiceRequest(
        method: 'getIsolatePauseEvent',
        args: <String, Object>{
          'isolateId': '1',
        },
        jsonResponse: fakeUnpausedEvent.toJson(),
      ),
      FakeVmServiceRequest(
        method: 'ext.flutter.reassemble',
        args: <String, Object?>{
          'isolateId': fakeUnpausedIsolate.id,
        },
      ),
    ]);
    residentRunner = HotRunner(
      <FlutterDevice>[
        flutterDevice,
      ],
      stayResident: false,
      debuggingOptions: DebuggingOptions.enabled(BuildInfo.debug),
      target: 'main.dart',
      devtoolsHandler: createNoOpHandler,
      analytics: fakeAnalytics,
    );
    final Completer<DebugConnectionInfo> futureConnectionInfo = Completer<DebugConnectionInfo>.sync();
    final Completer<void> futureAppStart = Completer<void>.sync();
    unawaited(residentRunner.attach(
      appStartedCompleter: futureAppStart,
      connectionInfoCompleter: futureConnectionInfo,
      enableDevTools: true,
    ));
    await futureAppStart.future;
    flutterDevice.report =  UpdateFSReport(success: true);

    final OperationResult result = await residentRunner.restart();

    expect(result.code, 0);
    expect(fakeVmServiceHost?.hasRemainingExpectations, false);
  }));

  testUsingContext('ResidentRunner reports error with missing entrypoint file', () => testbed.run(() async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[
      listViews,
      listViews,
      listViews,
      FakeVmServiceRequest(
        method: 'getVM',
        jsonResponse: vm_service.VM.parse(<String, Object>{
          'isolates': <Object>[
            fakeUnpausedIsolate.toJson(),
          ],
        })!.toJson(),
      ),
      const FakeVmServiceRequest(
        method: kReloadSourcesServiceName,
        args: <String, Object>{
          'isolateId': '1',
          'pause': false,
          'rootLibUri': 'main.dart.incremental.dill',
        },
        jsonResponse: <String, Object>{
          'type': 'ReloadReport',
          'success': true,
          'details': <String, Object>{
            'loadedLibraryCount': 1,
          },
        },
      ),
      FakeVmServiceRequest(
        method: 'getIsolatePauseEvent',
        args: <String, Object>{
          'isolateId': '1',
        },
        jsonResponse: fakeUnpausedEvent.toJson(),
      ),
      FakeVmServiceRequest(
        method: 'ext.flutter.reassemble',
        args: <String, Object?>{
          'isolateId': fakeUnpausedIsolate.id,
        },
      ),
    ]);
    final Completer<DebugConnectionInfo> futureConnectionInfo = Completer<DebugConnectionInfo>.sync();
    final Completer<void> futureAppStart = Completer<void>.sync();
    unawaited(residentRunner.attach(
      appStartedCompleter: futureAppStart,
      connectionInfoCompleter: futureConnectionInfo,
      enableDevTools: true,
    ));
    await futureAppStart.future;
    flutterDevice.report =  UpdateFSReport(success: true, invalidatedSourcesCount: 1);

    final OperationResult result = await residentRunner.restart();

    expect(globals.fs.file(globals.fs.path.join('lib', 'main.dart')), isNot(exists));
    expect(testLogger.errorText, contains('The entrypoint file (i.e. the file with main())'));
    expect(result.fatal, false);
    expect(result.code, 0);
  }));

   testUsingContext('ResidentRunner resets compilation time on reload reject', () => testbed.run(() async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[
      listViews,
      listViews,
      listViews,
      FakeVmServiceRequest(
        method: 'getVM',
        jsonResponse: vm_service.VM.parse(<String, Object>{
          'isolates': <Object>[
            fakeUnpausedIsolate.toJson(),
          ],
        })!.toJson(),
      ),
      const FakeVmServiceRequest(
        method: kReloadSourcesServiceName,
        args: <String, Object>{
          'isolateId': '1',
          'pause': false,
          'rootLibUri': 'main.dart.incremental.dill',
        },
        jsonResponse: <String, Object>{
          'type': 'ReloadReport',
          'success': false,
          'notices': <Object>[
            <String, Object>{
              'message': 'Failed to hot reload',
            },
          ],
          'details': <String, Object>{},
        },
      ),
      listViews,
      FakeVmServiceRequest(
        method: 'getIsolate',
        args: <String, Object>{
          'isolateId': '1',
        },
        jsonResponse: fakeUnpausedIsolate.toJson(),
      ),
      FakeVmServiceRequest(
        method: 'ext.flutter.reassemble',
        args: <String, Object?>{
          'isolateId': fakeUnpausedIsolate.id,
        },
      ),
    ]);
    final Completer<DebugConnectionInfo> futureConnectionInfo = Completer<DebugConnectionInfo>.sync();
    final Completer<void> futureAppStart = Completer<void>.sync();
    unawaited(residentRunner.attach(
      appStartedCompleter: futureAppStart,
      connectionInfoCompleter: futureConnectionInfo,
      enableDevTools: true,
    ));
    await futureAppStart.future;
    flutterDevice.report =  UpdateFSReport(success: true, invalidatedSourcesCount: 1);

    final OperationResult result = await residentRunner.restart();

    expect(result.fatal, false);
    expect(result.message, contains('Reload rejected: Failed to hot reload')); // contains error message from reload report.
    expect(result.code, 1);
    expect(devFS.lastCompiled, null);
  }));

  testUsingContext('ResidentRunner can send target platform to analytics from hot reload', () => testbed.run(() async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[
      listViews,
      listViews,
      listViews,
      FakeVmServiceRequest(
        method: 'getVM',
        jsonResponse: vm_service.VM.parse(<String, Object>{
          'isolates': <Object>[
            fakeUnpausedIsolate.toJson(),
          ],
        })!.toJson(),
      ),
      const FakeVmServiceRequest(
        method: kReloadSourcesServiceName,
        args: <String, Object>{
          'isolateId': '1',
          'pause': false,
          'rootLibUri': 'main.dart.incremental.dill',
        },
        jsonResponse: <String, Object>{
          'type': 'ReloadReport',
          'success': true,
          'details': <String, Object>{
            'loadedLibraryCount': 1,
          },
        },
      ),
      FakeVmServiceRequest(
        method: 'getIsolatePauseEvent',
        args: <String, Object>{
          'isolateId': '1',
        },
        jsonResponse: fakeUnpausedEvent.toJson(),
      ),
      FakeVmServiceRequest(
        method: 'ext.flutter.reassemble',
        args: <String, Object?>{
          'isolateId': fakeUnpausedIsolate.id,
        },
      ),
    ]);
    final Completer<DebugConnectionInfo> futureConnectionInfo = Completer<DebugConnectionInfo>.sync();
    final Completer<void> futureAppStart = Completer<void>.sync();
    unawaited(residentRunner.attach(
      appStartedCompleter: futureAppStart,
      connectionInfoCompleter: futureConnectionInfo,
      enableDevTools: true,
    ));
    await futureAppStart.future;

    final OperationResult result = await residentRunner.restart();
    expect(result.fatal, false);
    expect(result.code, 0);

    final TestUsageEvent event = (globals.flutterUsage as TestUsage).events.first;
    expect(event.category, 'hot');
    expect(event.parameter, 'reload');
    expect(event.parameters?.hotEventTargetPlatform, getNameForTargetPlatform(TargetPlatform.android_arm));

    final Event newEvent = fakeAnalytics.sentEvents.first;
    expect(newEvent.eventName.label, 'hot_runner_info');
    expect(newEvent.eventData['label'], 'reload');
    expect(newEvent.eventData['targetPlatform'], getNameForTargetPlatform(TargetPlatform.android_arm));

  }, overrides: <Type, Generator>{
    Usage: () => TestUsage(),
  }));

  testUsingContext('ResidentRunner reports hot reload time details', () => testbed.run(() async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[
      listViews,
      FakeVmServiceRequest(
        method: 'getVM',
        jsonResponse: fakeVM.toJson(),
      ),
      listViews,
      listViews,
      FakeVmServiceRequest(
        method: 'getVM',
        jsonResponse: fakeVM.toJson(),
      ),
      const FakeVmServiceRequest(
        method: kReloadSourcesServiceName,
        args: <String, Object>{
          'isolateId': '1',
          'pause': false,
          'rootLibUri': 'main.dart.incremental.dill',
        },
        jsonResponse: <String, Object>{
          'type': 'ReloadReport',
          'success': true,
          'details': <String, Object>{
            'loadedLibraryCount': 1,
            'finalLibraryCount': 42,
          },
        },
      ),
      FakeVmServiceRequest(
        method: 'getIsolatePauseEvent',
        args: <String, Object>{
          'isolateId': '1',
        },
        jsonResponse: fakeUnpausedEvent.toJson(),
      ),
      FakeVmServiceRequest(
        method: 'ext.flutter.reassemble',
        args: <String, Object?>{
          'isolateId': fakeUnpausedIsolate.id,
        },
      ),
    ]);
    final FakeDelegateFlutterDevice flutterDevice = FakeDelegateFlutterDevice(
      device,
      BuildInfo.debug,
      FakeResidentCompiler(),
      devFS,
    )..vmService = fakeVmServiceHost!.vmService;
    residentRunner = HotRunner(
      <FlutterDevice>[
        flutterDevice,
      ],
      stayResident: false,
      debuggingOptions: DebuggingOptions.enabled(BuildInfo.debug),
      target: 'main.dart',
      devtoolsHandler: createNoOpHandler,
      analytics: fakeAnalytics,
    );
    devFS.nextUpdateReport = UpdateFSReport(
      success: true,
      invalidatedSourcesCount: 1,
    );

    final Completer<DebugConnectionInfo> futureConnectionInfo = Completer<DebugConnectionInfo>.sync();
    final Completer<void> futureAppStart = Completer<void>.sync();
    unawaited(residentRunner.attach(
      appStartedCompleter: futureAppStart,
      connectionInfoCompleter: futureConnectionInfo,
      enableDevTools: true,
    ));

    await futureAppStart.future;
    await residentRunner.restart();

    // The actual test: Expect to have compile, reload and reassemble times.
    expect(
        testLogger.statusText,
        contains(RegExp(r'Reloaded 1 of 42 libraries in \d+ms '
            r'\(compile: \d+ ms, reload: \d+ ms, reassemble: \d+ ms\)\.')));
  }, overrides: <Type, Generator>{
    FileSystem: () => MemoryFileSystem.test(),
    Platform: () => FakePlatform(),
    ProjectFileInvalidator: () => FakeProjectFileInvalidator(),
    Usage: () => TestUsage(),
  }));

  testUsingContext('ResidentRunner can send target platform to analytics from full restart', () => testbed.run(() async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[
      listViews,
      listViews,
      listViews,
      FakeVmServiceRequest(
        method: 'getIsolate',
        args: <String, Object?>{
          'isolateId': fakeUnpausedIsolate.id,
        },
        jsonResponse: fakeUnpausedIsolate.toJson(),
      ),
      FakeVmServiceRequest(
        method: 'getVM',
        jsonResponse: vm_service.VM.parse(<String, Object>{})!.toJson(),
      ),
      listViews,
      const FakeVmServiceRequest(
        method: 'streamListen',
        args: <String, Object>{
          'streamId': 'Isolate',
        },
      ),
      FakeVmServiceRequest(
        method: kRunInViewMethod,
        args: <String, Object>{
          'viewId': fakeFlutterView.id,
          'mainScript': 'main.dart.dill',
          'assetDirectory': 'build/flutter_assets',
        },
      ),
      FakeVmServiceStreamResponse(
        streamId: 'Isolate',
        event: vm_service.Event(
          timestamp: 0,
          kind: vm_service.EventKind.kIsolateRunnable,
        )
      ),
    ]);
    final Completer<DebugConnectionInfo> futureConnectionInfo = Completer<DebugConnectionInfo>.sync();
    final Completer<void> futureAppStart = Completer<void>.sync();
    unawaited(residentRunner.attach(
      appStartedCompleter: futureAppStart,
      connectionInfoCompleter: futureConnectionInfo,
      enableDevTools: true,
    ));

    final OperationResult result = await residentRunner.restart(fullRestart: true);
    expect(result.fatal, false);
    expect(result.code, 0);

    final TestUsageEvent event = (globals.flutterUsage as TestUsage).events.first;
    expect(event.category, 'hot');
    expect(event.parameter, 'restart');
    expect(event.parameters?.hotEventTargetPlatform, getNameForTargetPlatform(TargetPlatform.android_arm));
    expect(fakeVmServiceHost?.hasRemainingExpectations, false);

    // Parse out the event of interest since we may have timing events with
    // the new analytics package
    final List<Event> newEventList = fakeAnalytics.sentEvents.where((Event e) => e.eventName == DashEvent.hotRunnerInfo).toList();
    expect(newEventList, hasLength(1));
    final Event newEvent = newEventList.first;
    expect(newEvent.eventName.label, 'hot_runner_info');
    expect(newEvent.eventData['label'], 'restart');
    expect(newEvent.eventData['targetPlatform'], getNameForTargetPlatform(TargetPlatform.android_arm));

  }, overrides: <Type, Generator>{
    Usage: () => TestUsage(),
  }));

  testUsingContext('ResidentRunner can remove breakpoints and exception-pause-mode from paused isolate during hot restart', () => testbed.run(() async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[
      listViews,
      listViews,
      listViews,
      FakeVmServiceRequest(
        method: 'getIsolate',
        args: <String, Object?>{
          'isolateId': fakeUnpausedIsolate.id,
        },
        jsonResponse: fakePausedIsolate.toJson(),
      ),
      FakeVmServiceRequest(
        method: 'getVM',
        jsonResponse: vm_service.VM.parse(<String, Object>{})!.toJson(),
      ),
      const FakeVmServiceRequest(
        method: 'setIsolatePauseMode',
        args: <String, String>{
          'isolateId': '1',
          'exceptionPauseMode': 'None',
        }
      ),
      const FakeVmServiceRequest(
        method: 'removeBreakpoint',
        args: <String, String>{
          'isolateId': '1',
          'breakpointId': 'test-breakpoint',
        }
      ),
      const FakeVmServiceRequest(
        method: 'resume',
        args: <String, String>{
          'isolateId': '1',
        }
      ),
      listViews,
      const FakeVmServiceRequest(
        method: 'streamListen',
        args: <String, Object>{
          'streamId': 'Isolate',
        },
      ),
      FakeVmServiceRequest(
        method: kRunInViewMethod,
        args: <String, Object>{
          'viewId': fakeFlutterView.id,
          'mainScript': 'main.dart.dill',
          'assetDirectory': 'build/flutter_assets',
        },
      ),
      FakeVmServiceStreamResponse(
        streamId: 'Isolate',
        event: vm_service.Event(
          timestamp: 0,
          kind: vm_service.EventKind.kIsolateRunnable,
        ),
      ),
    ]);
    final Completer<DebugConnectionInfo> futureConnectionInfo = Completer<DebugConnectionInfo>.sync();
    final Completer<void> futureAppStart = Completer<void>.sync();
    unawaited(residentRunner.attach(
      appStartedCompleter: futureAppStart,
      connectionInfoCompleter: futureConnectionInfo,
      enableDevTools: true,
    ));

    final OperationResult result = await residentRunner.restart(fullRestart: true);

    expect(result.isOk, true);
    expect(fakeVmServiceHost?.hasRemainingExpectations, false);
  }));

  testUsingContext('ResidentRunner will alternative the name of the dill file uploaded for a hot restart', () => testbed.run(() async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[
      listViews,
      listViews,
      listViews,
      FakeVmServiceRequest(
        method: 'getIsolate',
        args: <String, Object?>{
          'isolateId': fakeUnpausedIsolate.id,
        },
        jsonResponse: fakeUnpausedIsolate.toJson(),
      ),
      FakeVmServiceRequest(
        method: 'getVM',
        jsonResponse: vm_service.VM.parse(<String, Object>{})!.toJson(),
      ),
      listViews,
      const FakeVmServiceRequest(
        method: 'streamListen',
        args: <String, Object>{
          'streamId': 'Isolate',
        },
      ),
      FakeVmServiceRequest(
        method: kRunInViewMethod,
        args: <String, Object>{
          'viewId': fakeFlutterView.id,
          'mainScript': 'main.dart.dill',
          'assetDirectory': 'build/flutter_assets',
        },
      ),
      FakeVmServiceStreamResponse(
        streamId: 'Isolate',
        event: vm_service.Event(
          timestamp: 0,
          kind: vm_service.EventKind.kIsolateRunnable,
        ),
      ),
      listViews,
      FakeVmServiceRequest(
        method: 'getIsolate',
        args: <String, Object?>{
          'isolateId': fakeUnpausedIsolate.id,
        },
        jsonResponse: fakeUnpausedIsolate.toJson(),
      ),
      FakeVmServiceRequest(
        method: 'getVM',
        jsonResponse: vm_service.VM.parse(<String, Object>{})!.toJson(),
      ),
      listViews,
      const FakeVmServiceRequest(
        method: 'streamListen',
        args: <String, Object>{
          'streamId': 'Isolate',
        },
      ),
      FakeVmServiceRequest(
        method: kRunInViewMethod,
        args: <String, Object>{
          'viewId': fakeFlutterView.id,
          'mainScript': 'main.dart.swap.dill',
          'assetDirectory': 'build/flutter_assets',
        },
      ),
      FakeVmServiceStreamResponse(
        streamId: 'Isolate',
        event: vm_service.Event(
          timestamp: 0,
          kind: vm_service.EventKind.kIsolateRunnable,
        ),
      ),
      listViews,
      FakeVmServiceRequest(
        method: 'getIsolate',
        args: <String, Object?>{
          'isolateId': fakeUnpausedIsolate.id,
        },
        jsonResponse: fakeUnpausedIsolate.toJson(),
      ),
      FakeVmServiceRequest(
        method: 'getVM',
        jsonResponse: vm_service.VM.parse(<String, Object>{})!.toJson(),
      ),
      listViews,
      const FakeVmServiceRequest(
        method: 'streamListen',
        args: <String, Object>{
          'streamId': 'Isolate',
        },
      ),
      FakeVmServiceRequest(
        method: kRunInViewMethod,
        args: <String, Object>{
          'viewId': fakeFlutterView.id,
          'mainScript': 'main.dart.dill',
          'assetDirectory': 'build/flutter_assets',
        },
      ),
      FakeVmServiceStreamResponse(
        streamId: 'Isolate',
        event: vm_service.Event(
          timestamp: 0,
          kind: vm_service.EventKind.kIsolateRunnable,
        ),
      ),
    ]);
    final Completer<DebugConnectionInfo> futureConnectionInfo = Completer<DebugConnectionInfo>.sync();
    final Completer<void> futureAppStart = Completer<void>.sync();
    unawaited(residentRunner.attach(
      appStartedCompleter: futureAppStart,
      connectionInfoCompleter: futureConnectionInfo,
      enableDevTools: true,
    ));

    await residentRunner.restart(fullRestart: true);
    await residentRunner.restart(fullRestart: true);
    await residentRunner.restart(fullRestart: true);

    expect(fakeVmServiceHost?.hasRemainingExpectations, false);
  }));

  testUsingContext('ResidentRunner Can handle an RPC exception from hot restart', () => testbed.run(() async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[
      listViews,
      listViews,
    ]);
    final Completer<DebugConnectionInfo> futureConnectionInfo = Completer<DebugConnectionInfo>.sync();
    final Completer<void> futureAppStart = Completer<void>.sync();
    unawaited(residentRunner.attach(
      appStartedCompleter: futureAppStart,
      connectionInfoCompleter: futureConnectionInfo,
      enableDevTools: true,
    ));
    await futureAppStart.future;
    flutterDevice.reportError = vm_service.RPCError('something bad happened', 666, '');

    final OperationResult result = await residentRunner.restart(fullRestart: true);
    expect(result.fatal, true);
    expect(result.code, 1);

    expect((globals.flutterUsage as TestUsage).events, contains(
      TestUsageEvent('hot', 'exception', parameters: CustomDimensions(
        hotEventTargetPlatform: getNameForTargetPlatform(TargetPlatform.android_arm),
        hotEventSdkName: 'Android',
        hotEventEmulator: false,
        hotEventFullRestart: true,
      )),
    ));
    expect(fakeAnalytics.sentEvents, contains(
      Event.hotRunnerInfo(
        label: 'exception',
        targetPlatform: getNameForTargetPlatform(TargetPlatform.android_arm),
        sdkName: 'Android',
        emulator: false,
        fullRestart: true,
      ),
    ));
    expect(fakeVmServiceHost?.hasRemainingExpectations, false);
  }, overrides: <Type, Generator>{
    Usage: () => TestUsage(),
  }));

  testUsingContext('ResidentRunner uses temp directory when there is no output dill path', () => testbed.run(() {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[]);
    expect(residentRunner.artifactDirectory.path, contains('flutter_tool.'));

    final ResidentRunner otherRunner = HotRunner(
      <FlutterDevice>[
        flutterDevice,
      ],
      stayResident: false,
      debuggingOptions: DebuggingOptions.enabled(BuildInfo.debug),
      dillOutputPath: globals.fs.path.join('foobar', 'app.dill'),
      target: 'main.dart',
      devtoolsHandler: createNoOpHandler,
      analytics: fakeAnalytics,
    );
    expect(otherRunner.artifactDirectory.path, contains('foobar'));
  }));

  testUsingContext('ResidentRunner deletes artifact directory on preExit', () => testbed.run(() async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[]);
    residentRunner.artifactDirectory.childFile('app.dill').createSync();
    await residentRunner.preExit();

    expect(residentRunner.artifactDirectory, isNot(exists));
  }));

  testUsingContext('ResidentRunner can run source generation', () => testbed.run(() async {
    final File arbFile = globals.fs.file(globals.fs.path.join('lib', 'l10n', 'app_en.arb'))
      ..createSync(recursive: true);
    arbFile.writeAsStringSync('''
{
  "helloWorld": "Hello, World!",
  "@helloWorld": {
    "description": "Sample description"
  }
}''');
    globals.fs.file('l10n.yaml').createSync();
    globals.fs.file('pubspec.yaml').writeAsStringSync('flutter:\n  generate: true\n');

    // Create necessary files for [DartPluginRegistrantTarget]
    final File packageConfig = globals.fs.directory('.dart_tool')
        .childFile('package_config.json');
    packageConfig.createSync(recursive: true);
    packageConfig.writeAsStringSync('''
{
  "configVersion": 2,
  "packages": [
    {
      "name": "path_provider_linux",
      "rootUri": "../../../path_provider_linux",
      "packageUri": "lib/",
      "languageVersion": "2.12"
    }
  ]
}
''');
    // Start from an empty dart_plugin_registrant.dart file.
    globals.fs.directory('.dart_tool').childDirectory('flutter_build').childFile('dart_plugin_registrant.dart').createSync(recursive: true);

    await residentRunner.runSourceGenerators();

    expect(testLogger.errorText, isEmpty);
    expect(testLogger.statusText, isEmpty);
  }));

  testUsingContext('generated main uses correct target', () => testbed.run(() async {
    final File arbFile = globals.fs.file(globals.fs.path.join('lib', 'l10n', 'app_en.arb'))
      ..createSync(recursive: true);
    arbFile.writeAsStringSync('''
{
  "helloWorld": "Hello, World!",
  "@helloWorld": {
    "description": "Sample description"
  }
}''');
    globals.fs.file('l10n.yaml').createSync();
    globals.fs.file('pubspec.yaml').writeAsStringSync('''
flutter:
  generate: true

dependencies:
  flutter:
    sdk: flutter
  path_provider_linux: 1.0.0
''');

    // Create necessary files for [DartPluginRegistrantTarget], including a
    // plugin that will trigger generation.
    final File packageConfig = globals.fs.directory('.dart_tool')
        .childFile('package_config.json');
    packageConfig.createSync(recursive: true);
    packageConfig.writeAsStringSync('''
{
  "configVersion": 2,
  "packages": [
    {
      "name": "path_provider_linux",
      "rootUri": "../path_provider_linux",
      "packageUri": "lib/",
      "languageVersion": "2.12"
    }
  ]
}
''');
    globals.fs.file('.packages').writeAsStringSync('''
path_provider_linux:/path_provider_linux/lib/
''');
    final Directory fakePluginDir = globals.fs.directory('path_provider_linux');
    final File pluginPubspec = fakePluginDir.childFile('pubspec.yaml');
    pluginPubspec.createSync(recursive: true);
    pluginPubspec.writeAsStringSync('''
name: path_provider_linux

flutter:
  plugin:
    implements: path_provider
    platforms:
      linux:
        dartPluginClass: PathProviderLinux
''');

    residentRunner = HotRunner(
        <FlutterDevice>[
          flutterDevice,
        ],
        stayResident: false,
        debuggingOptions: DebuggingOptions.enabled(BuildInfo.debug),
        target: 'custom_main.dart',
        devtoolsHandler: createNoOpHandler,
        analytics: fakeAnalytics,
      );
    await residentRunner.runSourceGenerators();

    final File generatedMain = globals.fs.directory('.dart_tool')
        .childDirectory('flutter_build')
        .childFile('dart_plugin_registrant.dart');

    expect(generatedMain.existsSync(), isTrue);
    expect(testLogger.errorText, isEmpty);
    expect(testLogger.statusText, isEmpty);
  }));

  testUsingContext('ResidentRunner can run source generation - generation fails', () => testbed.run(() async {
    // Intentionally define arb file with wrong name. generate_localizations defaults
    // to app_en.arb.
    final File arbFile = globals.fs.file(globals.fs.path.join('lib', 'l10n', 'foo.arb'))
      ..createSync(recursive: true);
    arbFile.writeAsStringSync('''
{
  "helloWorld": "Hello, World!",
  "@helloWorld": {
    "description": "Sample description"
  }
}''');
    globals.fs.file('l10n.yaml').createSync();
    globals.fs.file('pubspec.yaml').writeAsStringSync('flutter:\n  generate: true\n');

    await residentRunner.runSourceGenerators();

    expect(testLogger.errorText, contains('Error'));
    expect(testLogger.statusText, isEmpty);
  }));

  testUsingContext('ResidentRunner generates files when l10n.yaml exists', () => testbed.run(() async {
    globals.fs.file(globals.fs.path.join('lib', 'main.dart'))
      .createSync(recursive: true);
    final File arbFile = globals.fs.file(globals.fs.path.join('lib', 'l10n', 'app_en.arb'))
      ..createSync(recursive: true);
    arbFile.writeAsStringSync('''
{
  "helloWorld": "Hello, World!",
  "@helloWorld": {
    "description": "Sample description"
  }
}''');
    globals.fs.file('l10n.yaml').createSync();
    globals.fs.file('pubspec.yaml').writeAsStringSync('flutter:\n  generate: true\n');

    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[]);
    final FakeResidentCompiler residentCompiler = FakeResidentCompiler()
      ..nextOutput = const CompilerOutput('foo', 1 ,<Uri>[]);
    residentRunner = HotRunner(
      <FlutterDevice>[
        flutterDevice,
      ],
      stayResident: false,
      debuggingOptions: DebuggingOptions.enabled(BuildInfo.debug),
      target: 'main.dart',
      devtoolsHandler: createNoOpHandler,
      analytics: fakeAnalytics,
    );
    flutterDevice.generator = residentCompiler;

    await residentRunner.run();

    final File generatedLocalizationsFile = globals.fs.directory('.dart_tool')
      .childDirectory('flutter_gen')
      .childDirectory('gen_l10n')
      .childFile('app_localizations.dart');
    expect(generatedLocalizationsFile.existsSync(), isTrue);

    // Completing this future ensures that the daemon can exit correctly.
    expect(await residentRunner.waitForAppToFinish(), 1);
  }));

  testUsingContext('ResidentRunner printHelpDetails hot runner', () => testbed.run(() {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[]);

    residentRunner.printHelp(details: true);

    final CommandHelp commandHelp = residentRunner.commandHelp;

    // supports service protocol
    expect(residentRunner.supportsServiceProtocol, true);
    // isRunningDebug
    expect(residentRunner.isRunningDebug, true);
    // does support SkSL
    expect(residentRunner.supportsWriteSkSL, true);
    // commands
    expect(testLogger.statusText, equals(
        <dynamic>[
          'Flutter run key commands.',
          commandHelp.r,
          commandHelp.R,
          commandHelp.v,
          commandHelp.s,
          commandHelp.w,
          commandHelp.t,
          commandHelp.L,
          commandHelp.f,
          commandHelp.S,
          commandHelp.U,
          commandHelp.i,
          commandHelp.p,
          commandHelp.I,
          commandHelp.o,
          commandHelp.b,
          commandHelp.P,
          commandHelp.a,
          commandHelp.M,
          commandHelp.g,
          commandHelp.j,
          commandHelp.hWithDetails,
          commandHelp.c,
          commandHelp.q,
          '',
          'A Dart VM Service on FakeDevice is available at: null',
          '',
        ].join('\n')
    ));
  }));

  testUsingContext('ResidentRunner printHelp hot runner', () => testbed.run(() {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[]);

    residentRunner.printHelp(details: false);

    final CommandHelp commandHelp = residentRunner.commandHelp;

    // supports service protocol
    expect(residentRunner.supportsServiceProtocol, true);
    // isRunningDebug
    expect(residentRunner.isRunningDebug, true);
    // does support SkSL
    expect(residentRunner.supportsWriteSkSL, true);
    // commands
    expect(testLogger.statusText, equals(
        <dynamic>[
          'Flutter run key commands.',
          commandHelp.r,
          commandHelp.R,
          commandHelp.hWithoutDetails,
          commandHelp.c,
          commandHelp.q,
          '',
          'A Dart VM Service on FakeDevice is available at: null',
          '',
        ].join('\n')
    ));
  }));

  testUsingContext('ResidentRunner printHelpDetails cold runner', () => testbed.run(() {
    fakeVmServiceHost = null;
    residentRunner = ColdRunner(
      <FlutterDevice>[
        flutterDevice,
      ],
      stayResident: false,
      debuggingOptions: DebuggingOptions.disabled(BuildInfo.release),
      target: 'main.dart',
      devtoolsHandler: createNoOpHandler,
    );
    residentRunner.printHelp(details: true);

    final CommandHelp commandHelp = residentRunner.commandHelp;

    // does not supports service protocol
    expect(residentRunner.supportsServiceProtocol, false);
    // isRunningDebug
    expect(residentRunner.isRunningDebug, false);
    // does support SkSL
    expect(residentRunner.supportsWriteSkSL, false);
    // commands
    expect(testLogger.statusText, equals(
        <dynamic>[
          'Flutter run key commands.',
          commandHelp.v,
          commandHelp.s,
          commandHelp.hWithDetails,
          commandHelp.c,
          commandHelp.q,
          '',
        ].join('\n')
    ));
  }));

  testUsingContext('ResidentRunner printHelp cold runner', () => testbed.run(() {
    fakeVmServiceHost = null;
    residentRunner = ColdRunner(
      <FlutterDevice>[
        flutterDevice,
      ],
      stayResident: false,
      debuggingOptions: DebuggingOptions.disabled(BuildInfo.release),
      target: 'main.dart',
      devtoolsHandler: createNoOpHandler,
    );
    residentRunner.printHelp(details: false);

    final CommandHelp commandHelp = residentRunner.commandHelp;

    // does not supports service protocol
    expect(residentRunner.supportsServiceProtocol, false);
    // isRunningDebug
    expect(residentRunner.isRunningDebug, false);
    // does support SkSL
    expect(residentRunner.supportsWriteSkSL, false);
    // commands
    expect(testLogger.statusText, equals(
        <dynamic>[
          'Flutter run key commands.',
          commandHelp.hWithoutDetails,
          commandHelp.c,
          commandHelp.q,
          '',
        ].join('\n')
    ));
  }));

  testUsingContext('ResidentRunner handles writeSkSL returning no data', () => testbed.run(() async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[
      listViews,
      FakeVmServiceRequest(
        method: kGetSkSLsMethod,
        args: <String, Object>{
          'viewId': fakeFlutterView.id,
        },
        jsonResponse: <String, Object>{
          'SkSLs': <String, Object>{},
        }
      ),
    ]);
    await residentRunner.writeSkSL();

    expect(testLogger.statusText, contains('No data was received'));
    expect(fakeVmServiceHost?.hasRemainingExpectations, false);
  }));

  testUsingContext('ResidentRunner can write SkSL data to a unique file with engine revision, platform, and device name', () => testbed.run(() async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[
      listViews,
      FakeVmServiceRequest(
        method: kGetSkSLsMethod,
        args: <String, Object>{
          'viewId': fakeFlutterView.id,
        },
        jsonResponse: <String, Object>{
          'SkSLs': <String, Object>{
            'A': 'B',
          },
        },
      ),
    ]);
    await residentRunner.writeSkSL();

    expect(testLogger.statusText, contains('flutter_01.sksl.json'));
    expect(globals.fs.file('flutter_01.sksl.json'), exists);
    expect(json.decode(globals.fs.file('flutter_01.sksl.json').readAsStringSync()), <String, Object>{
      'platform': 'android',
      'name': 'FakeDevice',
      'engineRevision': 'abcdefg',
      'data': <String, Object>{'A': 'B'},
    });
    expect(fakeVmServiceHost?.hasRemainingExpectations, false);
  }, overrides: <Type, Generator>{
    FileSystemUtils: () => FileSystemUtils(
      fileSystem: globals.fs,
      platform: globals.platform,
    ),
    FlutterVersion: () => FakeFlutterVersion(engineRevision: 'abcdefg'),
  }));

  testUsingContext('ResidentRunner ignores DevtoolsLauncher when attaching with enableDevTools: false - cold mode', () => testbed.run(() async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[
      listViews,
      listViews,
    ]);
    residentRunner = ColdRunner(
      <FlutterDevice>[
        flutterDevice,
      ],
      stayResident: false,
      debuggingOptions: DebuggingOptions.enabled(BuildInfo.profile, vmserviceOutFile: 'foo'),
      target: 'main.dart',
      devtoolsHandler: createNoOpHandler,
    );

    final Future<int?> result = residentRunner.attach();
    expect(await result, 0);
  }));

  testUsingContext('FlutterDevice can exit from a release mode isolate with no VmService', () => testbed.run(() async {
    final TestFlutterDevice flutterDevice = TestFlutterDevice(
      device,
    );

    await flutterDevice.exitApps();

    expect(device.appStopped, true);
  }));

  testUsingContext('FlutterDevice will exit an un-paused isolate using stopApp', () => testbed.run(() async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[]);
    final TestFlutterDevice flutterDevice = TestFlutterDevice(
      device,
    );
    flutterDevice.vmService = fakeVmServiceHost!.vmService;

    final Future<void> exitFuture = flutterDevice.exitApps();

    await expectLater(exitFuture, completes);
    expect(device.appStopped, true);
    expect(fakeVmServiceHost?.hasRemainingExpectations, false);
  }));

  testUsingContext('HotRunner writes vm service file when providing debugging option', () => testbed.run(() async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[
      listViews,
      listViews,
    ], wsAddress: testUri);
    globals.fs.file(globals.fs.path.join('lib', 'main.dart')).createSync(recursive: true);
    residentRunner = HotRunner(
      <FlutterDevice>[
        flutterDevice,
      ],
      stayResident: false,
      debuggingOptions: DebuggingOptions.enabled(BuildInfo.debug, vmserviceOutFile: 'foo'),
      target: 'main.dart',
      devtoolsHandler: createNoOpHandler,
      analytics: fakeAnalytics,
    );

    await residentRunner.run(enableDevTools: true);

    expect(fakeVmServiceHost?.hasRemainingExpectations, false);
    expect(await globals.fs.file('foo').readAsString(), testUri.toString());
  }));

  testUsingContext('HotRunner copies compiled app.dill to cache during startup', () => testbed.run(() async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[
      listViews,
      listViews,
    ], wsAddress: testUri);
    globals.fs.file(globals.fs.path.join('lib', 'main.dart')).createSync(recursive: true);
    residentRunner = HotRunner(
      <FlutterDevice>[
        flutterDevice,
      ],
      stayResident: false,
      debuggingOptions: DebuggingOptions.enabled(
        const BuildInfo(
          BuildMode.debug,
          null,
          treeShakeIcons: false,
        )
      ),
      target: 'main.dart',
      devtoolsHandler: createNoOpHandler,
      analytics: fakeAnalytics,
    );
    residentRunner.artifactDirectory.childFile('app.dill').writeAsStringSync('ABC');

    await residentRunner.run(enableDevTools: true);

    expect(await globals.fs.file(globals.fs.path.join('build', 'cache.dill')).readAsString(), 'ABC');
  }));

  testUsingContext('HotRunner copies compiled app.dill to cache during startup with dart defines', () => testbed.run(() async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[
      listViews,
      listViews,
    ], wsAddress: testUri);
    globals.fs.file(globals.fs.path.join('lib', 'main.dart')).createSync(recursive: true);
    residentRunner = HotRunner(
      <FlutterDevice>[
        flutterDevice,
      ],
      stayResident: false,
      debuggingOptions: DebuggingOptions.enabled(
        const BuildInfo(
          BuildMode.debug,
          '',
          treeShakeIcons: false,
          dartDefines: <String>['a', 'b'],
        )
      ),
      target: 'main.dart',
      devtoolsHandler: createNoOpHandler,
      analytics: fakeAnalytics,
    );
    residentRunner.artifactDirectory.childFile('app.dill').writeAsStringSync('ABC');

    await residentRunner.run(enableDevTools: true);

    expect(await globals.fs.file(globals.fs.path.join(
      'build', '187ef4436122d1cc2f40dc2b92f0eba0.cache.dill')).readAsString(), 'ABC');
  }));

  testUsingContext('HotRunner copies compiled app.dill to cache during startup with null safety', () => testbed.run(() async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[
      listViews,
      listViews,
    ], wsAddress: testUri);
    globals.fs.file(globals.fs.path.join('lib', 'main.dart')).createSync(recursive: true);
    residentRunner = HotRunner(
      <FlutterDevice>[
        flutterDevice,
      ],
      stayResident: false,
      debuggingOptions: DebuggingOptions.enabled(
        const BuildInfo(
          BuildMode.debug,
          '',
          treeShakeIcons: false,
          extraFrontEndOptions: <String>['--enable-experiment=non-nullable']
        )
      ),
      target: 'main.dart',
      devtoolsHandler: createNoOpHandler,
      analytics: fakeAnalytics,
    );
    residentRunner.artifactDirectory.childFile('app.dill').writeAsStringSync('ABC');

    await residentRunner.run(enableDevTools: true);

    expect(await globals.fs.file(globals.fs.path.join(
      'build', 'cache.dill')).readAsString(), 'ABC');
  }));

  testUsingContext('HotRunner copies compiled app.dill to cache during startup with track-widget-creation', () => testbed.run(() async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[
      listViews,
      listViews,
    ], wsAddress: testUri);
    globals.fs.file(globals.fs.path.join('lib', 'main.dart')).createSync(recursive: true);
    residentRunner = HotRunner(
      <FlutterDevice>[
        flutterDevice,
      ],
      stayResident: false,
      debuggingOptions: DebuggingOptions.enabled(BuildInfo.debug),
      target: 'main.dart',
      devtoolsHandler: createNoOpHandler,
      analytics: fakeAnalytics,
    );
    residentRunner.artifactDirectory.childFile('app.dill').writeAsStringSync('ABC');

    await residentRunner.run(enableDevTools: true);

    expect(await globals.fs.file(globals.fs.path.join(
      'build', 'cache.dill.track.dill')).readAsString(), 'ABC');
  }));

  testUsingContext('HotRunner does not copy app.dill if a dillOutputPath is given', () => testbed.run(() async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[
      listViews,
      listViews,
    ], wsAddress: testUri);
    globals.fs.file(globals.fs.path.join('lib', 'main.dart')).createSync(recursive: true);
    residentRunner = HotRunner(
      <FlutterDevice>[
        flutterDevice,
      ],
      stayResident: false,
      dillOutputPath: 'test',
      debuggingOptions: DebuggingOptions.enabled(BuildInfo.debug),
      target: 'main.dart',
      devtoolsHandler: createNoOpHandler,
      analytics: fakeAnalytics,
    );
    residentRunner.artifactDirectory.childFile('app.dill').writeAsStringSync('ABC');

    await residentRunner.run(enableDevTools: true);

    expect(globals.fs.file(globals.fs.path.join('build', 'cache.dill')), isNot(exists));
  }));

  testUsingContext('HotRunner copies compiled app.dill to cache during startup with --track-widget-creation', () => testbed.run(() async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[
      listViews,
      listViews,
    ], wsAddress: testUri);
    globals.fs.file(globals.fs.path.join('lib', 'main.dart')).createSync(recursive: true);
    residentRunner = HotRunner(
      <FlutterDevice>[
        flutterDevice,
      ],
      stayResident: false,
      debuggingOptions: DebuggingOptions.enabled(const BuildInfo(
        BuildMode.debug,
        '',
        treeShakeIcons: false,
        trackWidgetCreation: true,
      )),
      target: 'main.dart',
      devtoolsHandler: createNoOpHandler,
      analytics: fakeAnalytics,
    );
    residentRunner.artifactDirectory.childFile('app.dill').writeAsStringSync('ABC');

    await residentRunner.run(enableDevTools: true);

    expect(await globals.fs.file(globals.fs.path.join('build', 'cache.dill.track.dill')).readAsString(), 'ABC');
  }));

  testUsingContext('HotRunner calls device dispose', () => testbed.run(() async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[
      listViews,
      listViews,
    ], wsAddress: testUri);
    globals.fs.file(globals.fs.path.join('lib', 'main.dart')).createSync(recursive: true);
    residentRunner = HotRunner(
      <FlutterDevice>[
        flutterDevice,
      ],
      stayResident: false,
      debuggingOptions: DebuggingOptions.enabled(BuildInfo.debug),
      target: 'main.dart',
      devtoolsHandler: createNoOpHandler,
      analytics: fakeAnalytics,
    );

    await residentRunner.run();
    expect(device.disposed, true);
  }));

  testUsingContext('HotRunner handles failure to write vmservice file', () => testbed.run(() async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[
      listViews,
      listViews,
    ]);
    globals.fs.file(globals.fs.path.join('lib', 'main.dart')).createSync(recursive: true);
    residentRunner = HotRunner(
      <FlutterDevice>[
        flutterDevice,
      ],
      stayResident: false,
      debuggingOptions: DebuggingOptions.enabled(BuildInfo.debug, vmserviceOutFile: 'foo'),
      target: 'main.dart',
      devtoolsHandler: createNoOpHandler,
      analytics: fakeAnalytics,
    );

    await residentRunner.run(enableDevTools: true);

    expect(testLogger.errorText, contains('Failed to write vmservice-out-file at foo'));
    expect(fakeVmServiceHost?.hasRemainingExpectations, false);
  }, overrides: <Type, Generator>{
    FileSystem: () => ThrowingForwardingFileSystem(MemoryFileSystem.test()),
  }));

  testUsingContext('ColdRunner writes vm service file when providing debugging option', () => testbed.run(() async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[
      listViews,
    ], wsAddress: testUri);
    globals.fs.file(globals.fs.path.join('lib', 'main.dart')).createSync(recursive: true);
    residentRunner = ColdRunner(
      <FlutterDevice>[
        flutterDevice,
      ],
      stayResident: false,
      debuggingOptions: DebuggingOptions.enabled(BuildInfo.profile, vmserviceOutFile: 'foo'),
      target: 'main.dart',
      devtoolsHandler: createNoOpHandler,
    );

    await residentRunner.run(enableDevTools: true);

    expect(await globals.fs.file('foo').readAsString(), testUri.toString());
    expect(fakeVmServiceHost?.hasRemainingExpectations, false);
  }));

  testUsingContext('FlutterDevice uses dartdevc configuration when targeting web', () async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[]);
    final FakeDevice device = FakeDevice(targetPlatform: TargetPlatform.web_javascript);
    final DefaultResidentCompiler? residentCompiler = (await FlutterDevice.create(
      device,
      buildInfo: const BuildInfo(
        BuildMode.debug,
        '',
        treeShakeIcons: false,
        nullSafetyMode: NullSafetyMode.unsound,
      ),
      target: null,
      platform: FakePlatform(),
    )).generator as DefaultResidentCompiler?;

    expect(residentCompiler!.initializeFromDill,
      globals.fs.path.join(getBuildDirectory(), 'fbbe6a61fb7a1de317d381f8df4814e5.cache.dill'));
    expect(residentCompiler.librariesSpec,
      globals.fs.file(globals.artifacts!.getHostArtifact(HostArtifact.flutterWebLibrariesJson))
        .uri.toString());
    expect(residentCompiler.targetModel, TargetModel.dartdevc);
    expect(residentCompiler.sdkRoot,
      '${globals.artifacts!.getHostArtifact(HostArtifact.flutterWebSdk).path}/');
    expect(residentCompiler.platformDill, 'file:///HostArtifact.webPlatformKernelFolder/ddc_outline.dill');
  }, overrides: <Type, Generator>{
    Artifacts: () => Artifacts.test(),
    FileSystem: () => MemoryFileSystem.test(),
    ProcessManager: () => FakeProcessManager.any(),
  });

  testUsingContext('FlutterDevice uses dartdevc configuration when targeting web with null-safety autodetected', () async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[]);
    final FakeDevice device = FakeDevice(targetPlatform: TargetPlatform.web_javascript);

    final DefaultResidentCompiler? residentCompiler = (await FlutterDevice.create(
      device,
      buildInfo: const BuildInfo(
        BuildMode.debug,
        '',
        treeShakeIcons: false,
        extraFrontEndOptions: <String>['--enable-experiment=non-nullable'],
      ),
      target: null,
      platform: FakePlatform(),
    )).generator as DefaultResidentCompiler?;

    expect(residentCompiler!.initializeFromDill,
      globals.fs.path.join(getBuildDirectory(), '80b1a4cf4e7b90e1ab5f72022a0bc624.cache.dill'));
    expect(residentCompiler.librariesSpec,
      globals.fs.file(globals.artifacts!.getHostArtifact(HostArtifact.flutterWebLibrariesJson))
        .uri.toString());
    expect(residentCompiler.targetModel, TargetModel.dartdevc);
    expect(residentCompiler.sdkRoot,
      '${globals.artifacts!.getHostArtifact(HostArtifact.flutterWebSdk).path}/');
    expect(residentCompiler.platformDill, 'file:///HostArtifact.webPlatformKernelFolder/ddc_outline_sound.dill');
  }, overrides: <Type, Generator>{
    Artifacts: () => Artifacts.test(),
    FileSystem: () => MemoryFileSystem.test(),
    ProcessManager: () => FakeProcessManager.any(),
  });

  testUsingContext('FlutterDevice passes alternative-invalidation-strategy flag', () async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[]);
    final FakeDevice device = FakeDevice();


    final DefaultResidentCompiler? residentCompiler = (await FlutterDevice.create(
      device,
      buildInfo: const BuildInfo(
        BuildMode.debug,
        '',
        treeShakeIcons: false,
        extraFrontEndOptions: <String>[],
      ),
      target: null, platform: FakePlatform(),
    )).generator as DefaultResidentCompiler?;

    expect(residentCompiler!.extraFrontEndOptions,
      contains('--enable-experiment=alternative-invalidation-strategy'));
  }, overrides: <Type, Generator>{
    Artifacts: () => Artifacts.test(),
    FileSystem: () => MemoryFileSystem.test(),
    ProcessManager: () => FakeProcessManager.any(),
  });

  testUsingContext('FlutterDevice passes initializeFromDill parameter if specified', () async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[]);
    final FakeDevice device = FakeDevice();

    final DefaultResidentCompiler? residentCompiler = (await FlutterDevice.create(
      device,
      buildInfo: const BuildInfo(
        BuildMode.debug,
        '',
        treeShakeIcons: false,
        extraFrontEndOptions: <String>[],
        initializeFromDill: '/foo/bar.dill',
      ),
      target: null, platform: FakePlatform(),
    )).generator as DefaultResidentCompiler?;

    expect(residentCompiler!.initializeFromDill, '/foo/bar.dill');
    expect(residentCompiler.assumeInitializeFromDillUpToDate, false);
  }, overrides: <Type, Generator>{
    Artifacts: () => Artifacts.test(),
    FileSystem: () => MemoryFileSystem.test(),
    ProcessManager: () => FakeProcessManager.any(),
  });

   testUsingContext('FlutterDevice passes assumeInitializeFromDillUpToDate parameter if specified', () async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[]);
    final FakeDevice device = FakeDevice();

    final DefaultResidentCompiler? residentCompiler = (await FlutterDevice.create(
      device,
      buildInfo: const BuildInfo(
        BuildMode.debug,
        '',
        treeShakeIcons: false,
        extraFrontEndOptions: <String>[],
        assumeInitializeFromDillUpToDate: true,
      ),
      target: null, platform: FakePlatform(),
    )).generator as DefaultResidentCompiler?;

    expect(residentCompiler!.assumeInitializeFromDillUpToDate, true);
  }, overrides: <Type, Generator>{
    Artifacts: () => Artifacts.test(),
    FileSystem: () => MemoryFileSystem.test(),
    ProcessManager: () => FakeProcessManager.any(),
  });

  testUsingContext('FlutterDevice passes frontendServerStarterPath parameter if specified', () async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[]);
    final FakeDevice device = FakeDevice();

    final DefaultResidentCompiler? residentCompiler = (await FlutterDevice.create(
      device,
      buildInfo: const BuildInfo(
        BuildMode.debug,
        '',
        treeShakeIcons: false,
        frontendServerStarterPath: '/foo/bar/frontend_server_starter.dart',
      ),
      target: null, platform: FakePlatform(),
    )).generator as DefaultResidentCompiler?;

    expect(residentCompiler!.frontendServerStarterPath, '/foo/bar/frontend_server_starter.dart');
  }, overrides: <Type, Generator>{
    Artifacts: () => Artifacts.test(),
    FileSystem: () => MemoryFileSystem.test(),
    ProcessManager: () => FakeProcessManager.any(),
  });

  testUsingContext('Handle existing VM service clients DDS error', () => testbed.run(() async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[]);
    final FakeDevice device = FakeDevice()
      ..dds = DartDevelopmentService();
    ddsLauncherCallback = (Uri uri, {bool enableAuthCodes = true, bool ipv6 = false, Uri? serviceUri, List<String> cachedUserTags = const <String>[], dds.UriConverter? uriConverter}) {
      expect(uri, Uri(scheme: 'foo', host: 'bar'));
      expect(enableAuthCodes, isTrue);
      expect(ipv6, isFalse);
      expect(serviceUri, Uri(scheme: 'http', host: '127.0.0.1', port: 0));
      expect(cachedUserTags, isEmpty);
      expect(uriConverter, isNull);
      throw FakeDartDevelopmentServiceException(message:
        'Existing VM service clients prevent DDS from taking control.',
      );
    };
    final TestFlutterDevice flutterDevice = TestFlutterDevice(
      device,
      vmServiceUris: Stream<Uri>.value(testUri),
    );
    bool caught = false;
    final Completer<void>done = Completer<void>();
    runZonedGuarded(() {
      flutterDevice.connect(allowExistingDdsInstance: true).then((_) => done.complete());
    }, (Object e, StackTrace st) {
      expect(e, isA<ToolExit>());
      expect((e as ToolExit).message,
        contains('Existing VM service clients prevent DDS from taking control.',
      ));
      done.complete();
      caught = true;
    });
    await done.future;
    if (!caught) {
      fail('Expected ToolExit to be thrown.');
    }
  }, overrides: <Type, Generator>{
    VMServiceConnector: () => (Uri httpUri, {
      ReloadSources? reloadSources,
      Restart? restart,
      CompileExpression? compileExpression,
      GetSkSLMethod? getSkSLMethod,
      FlutterProject? flutterProject,
      PrintStructuredErrorLogMethod? printStructuredErrorLogMethod,
      io.CompressionOptions? compression,
      Device? device,
      required Logger logger,
    }) async => FakeVmServiceHost(requests: <VmServiceExpectation>[]).vmService,
  }));

  testUsingContext('Uses existing DDS URI from exception field', () => testbed.run(() async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[]);
    final FakeDevice device = FakeDevice()
      ..dds = DartDevelopmentService();
    ddsLauncherCallback = (Uri uri, {bool enableAuthCodes = true, bool ipv6 = false, Uri? serviceUri, List<String> cachedUserTags = const <String>[], dds.UriConverter? uriConverter}) {
      throw dds.DartDevelopmentServiceException.existingDdsInstance(
        'Existing DDS at http://localhost/existingDdsInMessage.',
        ddsUri: Uri.parse('http://localhost/existingDdsInField'),
      );
    };
    final TestFlutterDevice flutterDevice = TestFlutterDevice(
      device,
      vmServiceUris: Stream<Uri>.value(testUri),
    );
    final Completer<void> done = Completer<void>();
    unawaited(runZonedGuarded(
      () => flutterDevice.connect(allowExistingDdsInstance: true).then((_) => done.complete()),
      (_, __) => done.complete(),
    ));
    await done.future;
    expect(device.dds.uri, Uri.parse('http://localhost/existingDdsInField'));
  }, overrides: <Type, Generator>{
    VMServiceConnector: () => (Uri httpUri, {
      ReloadSources? reloadSources,
      Restart? restart,
      CompileExpression? compileExpression,
      GetSkSLMethod? getSkSLMethod,
      FlutterProject? flutterProject,
      PrintStructuredErrorLogMethod? printStructuredErrorLogMethod,
      io.CompressionOptions? compression,
      Device? device,
      required Logger logger,
    }) async => FakeVmServiceHost(requests: <VmServiceExpectation>[]).vmService,
  }));

  testUsingContext('Falls back to existing DDS URI from exception message', () => testbed.run(() async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[]);
    final FakeDevice device = FakeDevice()
      ..dds = DartDevelopmentService();
    ddsLauncherCallback = (Uri uri, {bool enableAuthCodes = true, bool ipv6 = false, Uri? serviceUri, List<String> cachedUserTags = const <String>[], dds.UriConverter? uriConverter}) {
      throw dds.DartDevelopmentServiceException.existingDdsInstance(
        'Existing DDS at http://localhost/existingDdsInMessage.',
      );
    };
    final TestFlutterDevice flutterDevice = TestFlutterDevice(
      device,
      vmServiceUris: Stream<Uri>.value(testUri),
    );
    final Completer<void>done = Completer<void>();
    unawaited(runZonedGuarded(
      () => flutterDevice.connect(allowExistingDdsInstance: true).then((_) => done.complete()),
      (_, __) => done.complete(),
    ));
    await done.future;
    expect(device.dds.uri, Uri.parse('http://localhost/existingDdsInMessage'));
  }, overrides: <Type, Generator>{
    VMServiceConnector: () => (Uri httpUri, {
      ReloadSources? reloadSources,
      Restart? restart,
      CompileExpression? compileExpression,
      GetSkSLMethod? getSkSLMethod,
      FlutterProject? flutterProject,
      PrintStructuredErrorLogMethod? printStructuredErrorLogMethod,
      io.CompressionOptions? compression,
      Device? device,
      required Logger logger,
    }) async => FakeVmServiceHost(requests: <VmServiceExpectation>[]).vmService,
  }));

  testUsingContext('Host VM service ipv6 defaults', () => testbed.run(() async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[]);
    final FakeDevice device = FakeDevice()
      ..dds = DartDevelopmentService();
    final Completer<void>done = Completer<void>();
    ddsLauncherCallback = (Uri uri, {bool enableAuthCodes = true, bool ipv6 = false, Uri? serviceUri, List<String> cachedUserTags = const <String>[], dds.UriConverter? uriConverter}) async {
      expect(uri, Uri(scheme: 'foo', host: 'bar'));
      expect(enableAuthCodes, isFalse);
      expect(ipv6, isTrue);
      expect(serviceUri, Uri(scheme: 'http', host: '::1', port: 0));
      expect(cachedUserTags, isEmpty);
      expect(uriConverter, isNull);
      done.complete();
      return FakeDartDevelopmentService();
    };
    final TestFlutterDevice flutterDevice = TestFlutterDevice(
      device,
      vmServiceUris: Stream<Uri>.value(testUri),
    );
    await flutterDevice.connect(allowExistingDdsInstance: true, ipv6: true, disableServiceAuthCodes: true);
    await done.future;
  }, overrides: <Type, Generator>{
    VMServiceConnector: () => (Uri httpUri, {
      ReloadSources? reloadSources,
      Restart? restart,
      CompileExpression? compileExpression,
      GetSkSLMethod? getSkSLMethod,
      FlutterProject? flutterProject,
      PrintStructuredErrorLogMethod? printStructuredErrorLogMethod,
      io.CompressionOptions? compression,
      Device? device,
      required Logger logger,
    }) async => FakeVmServiceHost(requests: <VmServiceExpectation>[]).vmService,
  }));

  testUsingContext('Context includes URI converter', () => testbed.run(() async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[]);
    final FakeDevice device = FakeDevice()
      ..dds = DartDevelopmentService();
    final Completer<void>done = Completer<void>();
    ddsLauncherCallback = (
      Uri uri, {
      bool enableAuthCodes = false,
      bool ipv6 = false,
      Uri? serviceUri,
      List<String> cachedUserTags = const <String>[],
      dds.UriConverter? uriConverter,
    }) async {
      expect(uri, Uri(scheme: 'foo', host: 'bar'));
      expect(enableAuthCodes, isFalse);
      expect(ipv6, isTrue);
      expect(serviceUri, Uri(scheme: 'http', host: '::1', port: 0));
      expect(cachedUserTags, isEmpty);
      expect(uriConverter, isNotNull);
      done.complete();
      return FakeDartDevelopmentService();
    };
    final TestFlutterDevice flutterDevice = TestFlutterDevice(
      device,
      vmServiceUris: Stream<Uri>.value(testUri),
    );
    await flutterDevice.connect(allowExistingDdsInstance: true, ipv6: true, disableServiceAuthCodes: true);
    await done.future;
  }, overrides: <Type, Generator>{
    VMServiceConnector: () => (Uri httpUri, {
      ReloadSources? reloadSources,
      Restart? restart,
      CompileExpression? compileExpression,
      GetSkSLMethod? getSkSLMethod,
      FlutterProject? flutterProject,
      PrintStructuredErrorLogMethod? printStructuredErrorLogMethod,
      io.CompressionOptions compression = io.CompressionOptions.compressionDefault,
      Device? device,
      required Logger logger,
    }) async => FakeVmServiceHost(requests: <VmServiceExpectation>[]).vmService,
    dds.UriConverter: () => (String uri) => 'test',
  }));

  testUsingContext('Failed DDS start outputs error message', () => testbed.run(() async {
    // See https://github.com/flutter/flutter/issues/72385 for context.
    final FakeDevice device = FakeDevice()
      ..dds = DartDevelopmentService();
    ddsLauncherCallback = (
      Uri uri, {
      bool enableAuthCodes = false,
      bool ipv6 = false,
      Uri? serviceUri,
      List<String> cachedUserTags = const <String>[],
      dds.UriConverter? uriConverter,
    }) {
      expect(uri, Uri(scheme: 'foo', host: 'bar'));
      expect(enableAuthCodes, isTrue);
      expect(ipv6, isFalse);
      expect(serviceUri, Uri(scheme: 'http', host: '127.0.0.1', port: 0));
      expect(cachedUserTags, isEmpty);
      expect(uriConverter, isNull);
      throw FakeDartDevelopmentServiceException(message: 'No URI');
    };
    final TestFlutterDevice flutterDevice = TestFlutterDevice(
      device,
      vmServiceUris: Stream<Uri>.value(testUri),
    );
    bool caught = false;
    final Completer<void>done = Completer<void>();
    runZonedGuarded(() {
      flutterDevice.connect(allowExistingDdsInstance: true).then((_) => done.complete());
    }, (Object e, StackTrace st) {
      expect(e, isA<StateError>());
      expect((e as StateError).message, contains('No URI'));
      expect(testLogger.errorText, contains(
        'DDS has failed to start and there is not an existing DDS instance',
      ));
      done.complete();
      caught = true;
    });
    await done.future;
    if (!caught) {
      fail('Expected a StateError to be thrown.');
    }
  }, overrides: <Type, Generator>{
    VMServiceConnector: () => (Uri httpUri, {
      ReloadSources? reloadSources,
      Restart? restart,
      CompileExpression? compileExpression,
      GetSkSLMethod? getSkSLMethod,
      FlutterProject? flutterProject,
      PrintStructuredErrorLogMethod? printStructuredErrorLogMethod,
      io.CompressionOptions compression = io.CompressionOptions.compressionDefault,
      Device? device,
      required Logger logger,
    }) async => FakeVmServiceHost(requests: <VmServiceExpectation>[]).vmService,
  }));

  testUsingContext('nextPlatform moves through expected platforms', () {
    expect(nextPlatform('android'), 'iOS');
    expect(nextPlatform('iOS'), 'windows');
    expect(nextPlatform('windows'), 'macOS');
    expect(nextPlatform('macOS'), 'linux');
    expect(nextPlatform('linux'), 'fuchsia');
    expect(nextPlatform('fuchsia'), 'android');
    expect(() => nextPlatform('unknown'), throwsAssertionError);
  });

  testUsingContext('cleanupAtFinish shuts down resident devtools handler', () => testbed.run(() async {
    residentRunner = HotRunner(
      <FlutterDevice>[
        flutterDevice,
      ],
      stayResident: false,
      debuggingOptions: DebuggingOptions.enabled(BuildInfo.debug, vmserviceOutFile: 'foo'),
      target: 'main.dart',
      devtoolsHandler: createNoOpHandler,
      analytics: fakeAnalytics,
    );
    await residentRunner.cleanupAtFinish();

    expect((residentRunner.residentDevtoolsHandler! as NoOpDevtoolsHandler).wasShutdown, true);
  }));

  testUsingContext('HotRunner sets asset directory when first evict assets', () => testbed.run(() async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[
      listViews,
      setAssetBundlePath,
      evict,
    ]);
    residentRunner = HotRunner(
      <FlutterDevice>[
        flutterDevice,
      ],
      stayResident: false,
      debuggingOptions: DebuggingOptions.enabled(BuildInfo.debug),
      target: 'main.dart',
      devtoolsHandler: createNoOpHandler,
      analytics: fakeAnalytics,
    );

    (flutterDevice.devFS! as FakeDevFS).assetPathsToEvict = <String>{'asset'};

    expect(flutterDevice.devFS!.hasSetAssetDirectory, isFalse);
    await (residentRunner as HotRunner).evictDirtyAssets();
    expect(flutterDevice.devFS!.hasSetAssetDirectory, isTrue);
    expect(fakeVmServiceHost!.hasRemainingExpectations, isFalse);
  }));

  testUsingContext('HotRunner sets asset directory when first evict shaders', () => testbed.run(() async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[
      listViews,
      setAssetBundlePath,
      evictShader,
    ]);
    residentRunner = HotRunner(
      <FlutterDevice>[
        flutterDevice,
      ],
      stayResident: false,
      debuggingOptions: DebuggingOptions.enabled(BuildInfo.debug),
      target: 'main.dart',
      devtoolsHandler: createNoOpHandler,
      analytics: fakeAnalytics,
    );

    (flutterDevice.devFS! as FakeDevFS).shaderPathsToEvict = <String>{'foo.frag'};

    expect(flutterDevice.devFS!.hasSetAssetDirectory, false);
    await (residentRunner as HotRunner).evictDirtyAssets();
    expect(flutterDevice.devFS!.hasSetAssetDirectory, true);
    expect(fakeVmServiceHost!.hasRemainingExpectations, false);
  }));

  testUsingContext('HotRunner does not sets asset directory when no assets to evict', () => testbed.run(() async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[
    ]);
    residentRunner = HotRunner(
      <FlutterDevice>[
        flutterDevice,
      ],
      stayResident: false,
      debuggingOptions: DebuggingOptions.enabled(BuildInfo.debug),
      target: 'main.dart',
      devtoolsHandler: createNoOpHandler,
      analytics: fakeAnalytics,
    );

    expect(flutterDevice.devFS!.hasSetAssetDirectory, false);
    await (residentRunner as HotRunner).evictDirtyAssets();
    expect(flutterDevice.devFS!.hasSetAssetDirectory, false);
    expect(fakeVmServiceHost!.hasRemainingExpectations, false);
  }));

  testUsingContext('HotRunner does not set asset directory if it has been set before', () => testbed.run(() async {
    fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[
      listViews,
      evict,
    ]);
    residentRunner = HotRunner(
      <FlutterDevice>[
        flutterDevice,
      ],
      stayResident: false,
      debuggingOptions: DebuggingOptions.enabled(BuildInfo.debug),
      target: 'main.dart',
      devtoolsHandler: createNoOpHandler,
      analytics: fakeAnalytics,
    );

    (flutterDevice.devFS! as FakeDevFS).assetPathsToEvict = <String>{'asset'};
    flutterDevice.devFS!.hasSetAssetDirectory = true;

    await (residentRunner as HotRunner).evictDirtyAssets();
    expect(flutterDevice.devFS!.hasSetAssetDirectory, true);
    expect(fakeVmServiceHost!.hasRemainingExpectations, false);
  }));

  testUsingContext(
      'use the nativeAssetsYamlFile when provided',
      () => testbed.run(() async {
        final FakeDevice device = FakeDevice(
          targetPlatform: TargetPlatform.darwin,
          sdkNameAndVersion: 'Macos',
        );
        final FakeResidentCompiler residentCompiler = FakeResidentCompiler();
        final FakeFlutterDevice flutterDevice = FakeFlutterDevice()
          ..testUri = testUri
          ..vmServiceHost = (() => fakeVmServiceHost)
          ..device = device
          ..fakeDevFS = devFS
          ..targetPlatform = TargetPlatform.darwin
          ..generator = residentCompiler;

        fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[
          listViews,
          listViews,
        ]);
        globals.fs
            .file(globals.fs.path.join('lib', 'main.dart'))
            .createSync(recursive: true);
        residentRunner = HotRunner(
          <FlutterDevice>[
            flutterDevice,
          ],
          stayResident: false,
          debuggingOptions: DebuggingOptions.enabled(const BuildInfo(
            BuildMode.debug,
            '',
            treeShakeIcons: false,
            trackWidgetCreation: true,
          )),
          target: 'main.dart',
          devtoolsHandler: createNoOpHandler,
          analytics: fakeAnalytics,
          nativeAssetsYamlFile: 'foo.yaml',
        );

        final int? result = await residentRunner.run();
        expect(result, 0);

        expect(residentCompiler.recompileCalled, true);
        expect(residentCompiler.receivedNativeAssetsYaml, globals.fs.path.toUri('foo.yaml'));
      }),
      overrides: <Type, Generator>{
        ProcessManager: () => FakeProcessManager.any(),
        FeatureFlags: () => TestFeatureFlags(isNativeAssetsEnabled: true, isMacOSEnabled: true),
      });
}