Allow filtering devices to only those supported by current project (#31446)

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

@@ -535,6 +535,11 @@ class AndroidDevice extends Device {
     await runCheckedAsync(adbCommandForDevice(<String>['pull', remotePath, outputFile.path]));
     await runCheckedAsync(adbCommandForDevice(<String>['shell', 'rm', remotePath]));
   }
+
+  @override
+  bool isSupportedForProject(FlutterProject flutterProject) {
+    return flutterProject.android.existsSync();
+  }
 }
 
 Map<String, String> parseAdbDeviceProperties(String str) {

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

@@ -243,6 +243,7 @@ class AttachCommand extends FlutterCommand {
       final bool useHot = getBuildInfo().isDebug;
       final FlutterDevice flutterDevice = await FlutterDevice.create(
         device,
+        flutterProject: flutterProject,
         trackWidgetCreation: argResults['track-widget-creation'],
         dillOutputPath: argResults['output-dill'],
         fileSystemRoots: argResults['filesystem-root'],

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

@@ -19,6 +19,7 @@ import '../convert.dart';
 import '../device.dart';
 import '../emulator.dart';
 import '../globals.dart';
+import '../project.dart';
 import '../resident_runner.dart';
 import '../run_cold.dart';
 import '../run_hot.dart';
@@ -344,9 +345,11 @@ class AppDomain extends Domain {
     // We change the current working directory for the duration of the `start` command.
     final Directory cwd = fs.currentDirectory;
     fs.currentDirectory = fs.directory(projectDirectory);
+    final FlutterProject flutterProject = await FlutterProject.current();
 
     final FlutterDevice flutterDevice = await FlutterDevice.create(
       device,
+      flutterProject: flutterProject,
       trackWidgetCreation: trackWidgetCreation,
       dillOutputPath: dillOutputPath,
       viewFilter: isolateFilter,

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

@@ -13,6 +13,7 @@ import '../cache.dart';
 import '../device.dart';
 import '../globals.dart';
 import '../ios/mac.dart';
+import '../project.dart';
 import '../resident_runner.dart';
 import '../run_cold.dart';
 import '../run_hot.dart';
@@ -364,9 +365,11 @@ class RunCommand extends RunCommandBase {
       expFlags = argResults[FlutterOptions.kEnableExperiment];
     }
     final List<FlutterDevice> flutterDevices = <FlutterDevice>[];
+    final FlutterProject flutterProject = await FlutterProject.current();
     for (Device device in devices) {
       final FlutterDevice flutterDevice = await FlutterDevice.create(
         device,
+        flutterProject: flutterProject,
         trackWidgetCreation: argResults['track-widget-creation'],
         dillOutputPath: argResults['output-dill'],
         fileSystemRoots: argResults['filesystem-root'],

packages/flutter_tools/lib/src/device.dart

@@ -19,6 +19,7 @@ import 'ios/devices.dart';
 import 'ios/simulators.dart';
 import 'linux/linux_device.dart';
 import 'macos/macos_device.dart';
+import 'project.dart';
 import 'tester/flutter_tester.dart';
 import 'web/web_device.dart';
 import 'windows/windows_device.dart';
@@ -235,6 +236,9 @@ abstract class Device {
     }
   }
 
+  /// Whether the device is supported for the current project directory.
+  bool isSupportedForProject(FlutterProject flutterProject);
+
   /// Check if a version of the given app is already installed
   Future<bool> isAppInstalled(ApplicationPackage app);
 

packages/flutter_tools/lib/src/fuchsia/fuchsia_device.dart

@@ -17,6 +17,7 @@ import '../base/time.dart';
 import '../build_info.dart';
 import '../device.dart';
 import '../globals.dart';
+import '../project.dart';
 import '../vmservice.dart';
 
 import 'fuchsia_sdk.dart';
@@ -302,6 +303,9 @@ class FuchsiaDevice extends Device {
   }
 
   FuchsiaIsolateDiscoveryProtocol  getIsolateDiscoveryProtocol(String isolateName) => FuchsiaIsolateDiscoveryProtocol(this, isolateName);
+
+  @override
+  bool isSupportedForProject(FlutterProject flutterProject) => true;
 }
 
 class FuchsiaIsolateDiscoveryProtocol {

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

@@ -17,6 +17,7 @@ import '../build_info.dart';
 import '../convert.dart';
 import '../device.dart';
 import '../globals.dart';
+import '../project.dart';
 import '../protocol_discovery.dart';
 import 'code_signing.dart';
 import 'ios_workflow.dart';
@@ -401,6 +402,11 @@ class IOSDevice extends Device {
   Future<void> takeScreenshot(File outputFile) async {
     await iMobileDevice.takeScreenshot(outputFile);
   }
+
+  @override
+  bool isSupportedForProject(FlutterProject flutterProject) {
+    return flutterProject.ios.existsSync();
+  }
 }
 
 /// Decodes a vis-encoded syslog string to a UTF-8 representation.

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

@@ -19,6 +19,7 @@ import '../bundle.dart' as bundle;
 import '../convert.dart';
 import '../device.dart';
 import '../globals.dart';
+import '../project.dart';
 import '../protocol_discovery.dart';
 import 'ios_workflow.dart';
 import 'mac.dart';
@@ -473,6 +474,11 @@ class IOSSimulator extends Device {
   Future<void> takeScreenshot(File outputFile) {
     return SimControl.instance.takeScreenshot(id, outputFile.path);
   }
+
+  @override
+  bool isSupportedForProject(FlutterProject flutterProject) {
+    return flutterProject.ios.existsSync();
+  }
 }
 
 /// Launches the device log reader process on the host.

packages/flutter_tools/lib/src/linux/linux_device.dart

@@ -108,6 +108,11 @@ class LinuxDevice extends Device {
   @override
   Future<bool> uninstallApp(ApplicationPackage app) async => true;
 
+  @override
+  bool isSupportedForProject(FlutterProject flutterProject) {
+    return flutterProject.linux.existsSync();
+  }
+
   // Track the last built mode from startApp.
   BuildMode _lastBuiltMode;
 }

packages/flutter_tools/lib/src/macos/macos_device.dart

@@ -117,6 +117,11 @@ class MacOSDevice extends Device {
   // to uninstall the application.
   @override
   Future<bool> uninstallApp(ApplicationPackage app) async => true;
+
+  @override
+  bool isSupportedForProject(FlutterProject flutterProject) {
+    return flutterProject.macos.existsSync();
+  }
 }
 
 class MacOSDevices extends PollingDeviceDiscovery {

packages/flutter_tools/lib/src/project.dart

@@ -208,8 +208,6 @@ class IosProject {
   Directory get _ephemeralDirectory => parent.directory.childDirectory('.ios');
   Directory get _editableDirectory => parent.directory.childDirectory('ios');
 
-  bool existsSync() => parent.isModule || _editableDirectory.existsSync();
-
   /// This parent folder of `Runner.xcodeproj`.
   Directory get hostAppRoot {
     if (!isModule || _editableDirectory.existsSync())
@@ -264,6 +262,11 @@ class IosProject {
   /// Xcode workspace shared workspace settings file for the host app.
   File get xcodeWorkspaceSharedSettings => xcodeWorkspaceSharedData.childFile('WorkspaceSettings.xcsettings');
 
+  /// Whether the current flutter project has an iOS subproject.
+  bool existsSync()  {
+    return parent.isModule || _editableDirectory.existsSync();
+  }
+
   /// The product bundle identifier of the host app, or null if not set or if
   /// iOS tooling needed to read it is not installed.
   String get productBundleIdentifier {
@@ -391,8 +394,6 @@ class AndroidProject {
     return _ephemeralDirectory;
   }
 
-  bool existsSync() => parent.isModule || _flutterLibGradleRoot.existsSync();
-
   /// The Gradle root directory of the Android wrapping of Flutter and plugins.
   /// This is the same as [hostAppGradleRoot] except when the project is
   /// a Flutter module with an editable host app.
@@ -420,6 +421,11 @@ class AndroidProject {
     return fs.directory(fs.path.join(hostAppGradleRoot.path, 'app', 'build', 'outputs', 'bundle'));
   }
 
+  /// Whether the current flutter project has an Android sub-project.
+  bool existsSync() {
+    return parent.isModule || _editableHostAppDirectory.existsSync();
+  }
+
   bool get isUsingGradle {
     return hostAppGradleRoot.childFile('build.gradle').existsSync();
   }
@@ -498,7 +504,10 @@ class WebProject {
 
   final FlutterProject parent;
 
-  bool existsSync() => parent.directory.childDirectory('web').existsSync();
+  /// Whether this flutter project has a web sub-project.
+  bool existsSync() {
+    return parent.directory.childDirectory('web').existsSync();
+  }
 
   Future<void> ensureReadyForPlatformSpecificTooling() async {
     /// Generate index.html in build/web. Eventually we could support
@@ -590,4 +599,4 @@ class LinuxProject {
 
   /// The Linux project makefile.
   File get makeFile => editableHostAppDirectory.childFile('Makefile');
-}
\ No newline at end of file
+}

packages/flutter_tools/lib/src/resident_runner.dart

@@ -52,6 +52,7 @@ class FlutterDevice {
   /// Create a [FlutterDevice] with optional code generation enabled.
   static Future<FlutterDevice> create(
     Device device, {
+    @required FlutterProject flutterProject,
     @required bool trackWidgetCreation,
     String dillOutputPath,
     List<String> fileSystemRoots,
@@ -64,7 +65,6 @@ class FlutterDevice {
     @required BuildMode buildMode,
   }) async {
     ResidentCompiler generator;
-    final FlutterProject flutterProject = await FlutterProject.current();
     if (flutterProject.hasBuilders) {
       generator = await CodeGeneratingResidentCompiler.create(
         flutterProject: flutterProject,

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

@@ -527,6 +527,13 @@ abstract class FlutterCommand extends Command<void> {
     }
 
     devices = devices.where((Device device) => device.isSupported()).toList();
+    // If the user has not specified all devices and has multiple connected
+    // then filter then list by those supported in the current project. If
+    // this ends up with a single device we can proceed as normal.
+    if (devices.length > 1 && !deviceManager.hasSpecifiedAllDevices && !deviceManager.hasSpecifiedDeviceId) {
+      final FlutterProject flutterProject = await FlutterProject.current();
+      devices.removeWhere((Device device) => !device.isSupportedForProject(flutterProject));
+    }
 
     if (devices.isEmpty) {
       printStatus(userMessages.flutterNoSupportedDevices);

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

@@ -18,6 +18,7 @@ import '../convert.dart';
 import '../dart/package_map.dart';
 import '../device.dart';
 import '../globals.dart';
+import '../project.dart';
 import '../protocol_discovery.dart';
 import '../version.dart';
 
@@ -192,6 +193,9 @@ class FlutterTesterDevice extends Device {
 
   @override
   Future<bool> uninstallApp(ApplicationPackage app) async => true;
+
+  @override
+  bool isSupportedForProject(FlutterProject flutterProject) => true;
 }
 
 class FlutterTesterDevices extends PollingDeviceDiscovery {

packages/flutter_tools/lib/src/web/web_device.dart

@@ -166,6 +166,11 @@ class WebDevice extends Device {
     await request.response.addStream(file.openRead());
     await request.response.close();
   }
+
+  @override
+  bool isSupportedForProject(FlutterProject flutterProject) {
+    return flutterProject.web.existsSync();
+  }
 }
 
 class WebDevices extends PollingDeviceDiscovery {

packages/flutter_tools/lib/src/windows/windows_device.dart

@@ -114,6 +114,11 @@ class WindowsDevice extends Device {
   // to uninstall the application.
   @override
   Future<bool> uninstallApp(ApplicationPackage app) async => true;
+
+  @override
+  bool isSupportedForProject(FlutterProject flutterProject) {
+    return flutterProject.windows.existsSync();
+  }
 }
 
 class WindowsDevices extends PollingDeviceDiscovery {

packages/flutter_tools/test/android/android_device_test.dart

@@ -10,6 +10,7 @@ import 'package:flutter_tools/src/android/android_sdk.dart';
 import 'package:flutter_tools/src/base/config.dart';
 import 'package:flutter_tools/src/base/file_system.dart';
 import 'package:flutter_tools/src/base/io.dart';
+import 'package:flutter_tools/src/project.dart';
 import 'package:mockito/mockito.dart';
 import 'package:process/process.dart';
 
@@ -157,6 +158,44 @@ Use the 'android' tool to install them:
       ProcessManager: () => mockProcessManager,
     });
   });
+
+  testUsingContext('isSupportedForProject is true on module project', () async {
+    fs.file('pubspec.yaml')
+      ..createSync()
+      ..writeAsStringSync(r'''
+name: example
+
+flutter:
+  module: {}
+''');
+    fs.file('.packages').createSync();
+    final FlutterProject flutterProject = await FlutterProject.current();
+
+    expect(AndroidDevice('test').isSupportedForProject(flutterProject), true);
+  }, overrides: <Type, Generator>{
+    FileSystem: () => MemoryFileSystem(),
+  });
+
+  testUsingContext('isSupportedForProject is true with editable host app', () async {
+    fs.file('pubspec.yaml').createSync();
+    fs.file('.packages').createSync();
+    fs.directory('android').createSync();
+    final FlutterProject flutterProject = await FlutterProject.current();
+
+    expect(AndroidDevice('test').isSupportedForProject(flutterProject), true);
+  }, overrides: <Type, Generator>{
+    FileSystem: () => MemoryFileSystem(),
+  });
+
+  testUsingContext('isSupportedForProject is false with no host app and no module', () async {
+    fs.file('pubspec.yaml').createSync();
+    fs.file('.packages').createSync();
+    final FlutterProject flutterProject = await FlutterProject.current();
+
+    expect(AndroidDevice('test').isSupportedForProject(flutterProject), false);
+  }, overrides: <Type, Generator>{
+    FileSystem: () => MemoryFileSystem(),
+  });
 }
 
 class MockProcessManager extends Mock implements ProcessManager {}

packages/flutter_tools/test/fuchsia/fuchsa_device_test.dart

@@ -53,6 +53,7 @@ void main() {
       expect(device.supportsHotReload, true);
       expect(device.supportsHotRestart, false);
       expect(device.supportsStopApp, false);
+      expect(device.isSupportedForProject(null), true);
       expect(await device.stopApp(null), false);
     });
   });

packages/flutter_tools/test/ios/devices_test.dart

@@ -5,12 +5,14 @@
 import 'dart:async';
 
 import 'package:file/file.dart';
+import 'package:file/memory.dart';
 import 'package:flutter_tools/src/application_package.dart';
 import 'package:flutter_tools/src/base/file_system.dart';
 import 'package:flutter_tools/src/base/io.dart';
 import 'package:flutter_tools/src/device.dart';
 import 'package:flutter_tools/src/ios/devices.dart';
 import 'package:flutter_tools/src/ios/mac.dart';
+import 'package:flutter_tools/src/project.dart';
 import 'package:mockito/mockito.dart';
 import 'package:platform/platform.dart';
 import 'package:process/process.dart';
@@ -183,4 +185,42 @@ f577a7903cc54959be2e34bc4f7f80b7009efcf4
       IMobileDevice: () => mockIMobileDevice,
     });
   });
+
+  testUsingContext('IOSDevice.isSupportedForProject is true on module project', () async {
+    fs.file('pubspec.yaml')
+      ..createSync()
+      ..writeAsStringSync(r'''
+name: example
+
+flutter:
+  module: {}
+''');
+    fs.file('.packages').createSync();
+    final FlutterProject flutterProject = await FlutterProject.current();
+
+    expect(IOSDevice('test').isSupportedForProject(flutterProject), true);
+  }, overrides: <Type, Generator>{
+    FileSystem: () => MemoryFileSystem(),
+  });
+
+  testUsingContext('IOSDevice.isSupportedForProject is true with editable host app', () async {
+    fs.file('pubspec.yaml').createSync();
+    fs.file('.packages').createSync();
+    fs.directory('ios').createSync();
+    final FlutterProject flutterProject = await FlutterProject.current();
+
+    expect(IOSDevice('test').isSupportedForProject(flutterProject), true);
+  }, overrides: <Type, Generator>{
+    FileSystem: () => MemoryFileSystem(),
+  });
+
+  testUsingContext('IOSDevice.isSupportedForProject is false with no host app and no module', () async {
+    fs.file('pubspec.yaml').createSync();
+    fs.file('.packages').createSync();
+    final FlutterProject flutterProject = await FlutterProject.current();
+
+    expect(IOSDevice('test').isSupportedForProject(flutterProject), false);
+  }, overrides: <Type, Generator>{
+    FileSystem: () => MemoryFileSystem(),
+  });
 }

packages/flutter_tools/test/ios/simulators_test.dart

@@ -6,11 +6,13 @@ import 'dart:async';
 import 'dart:io' show ProcessResult, Process;
 
 import 'package:file/file.dart';
+import 'package:file/memory.dart';
 import 'package:flutter_tools/src/device.dart';
 import 'package:flutter_tools/src/application_package.dart';
 import 'package:flutter_tools/src/base/file_system.dart';
 import 'package:flutter_tools/src/ios/mac.dart';
 import 'package:flutter_tools/src/ios/simulators.dart';
+import 'package:flutter_tools/src/project.dart';
 import 'package:mockito/mockito.dart';
 import 'package:platform/platform.dart';
 import 'package:process/process.dart';
@@ -414,4 +416,42 @@ void main() {
       SimControl: () => simControl,
     });
   });
+
+  testUsingContext('IOSDevice.isSupportedForProject is true on module project', () async {
+    fs.file('pubspec.yaml')
+      ..createSync()
+      ..writeAsStringSync(r'''
+name: example
+
+flutter:
+  module: {}
+''');
+    fs.file('.packages').createSync();
+    final FlutterProject flutterProject = await FlutterProject.current();
+
+    expect(IOSSimulator('test').isSupportedForProject(flutterProject), true);
+  }, overrides: <Type, Generator>{
+    FileSystem: () => MemoryFileSystem(),
+  });
+
+  testUsingContext('IOSDevice.isSupportedForProject is true with editable host app', () async {
+    fs.file('pubspec.yaml').createSync();
+    fs.file('.packages').createSync();
+    fs.directory('ios').createSync();
+    final FlutterProject flutterProject = await FlutterProject.current();
+
+    expect(IOSSimulator('test').isSupportedForProject(flutterProject), true);
+  }, overrides: <Type, Generator>{
+    FileSystem: () => MemoryFileSystem(),
+  });
+
+  testUsingContext('IOSDevice.isSupportedForProject is false with no host app and no module', () async {
+    fs.file('pubspec.yaml').createSync();
+    fs.file('.packages').createSync();
+    final FlutterProject flutterProject = await FlutterProject.current();
+
+    expect(IOSSimulator('test').isSupportedForProject(flutterProject), false);
+  }, overrides: <Type, Generator>{
+    FileSystem: () => MemoryFileSystem(),
+  });
 }

packages/flutter_tools/test/linux/linux_device_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:file/memory.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';
@@ -9,6 +10,7 @@ import 'package:flutter_tools/src/build_info.dart';
 import 'package:flutter_tools/src/linux/application_package.dart';
 import 'package:flutter_tools/src/linux/linux_device.dart';
 import 'package:flutter_tools/src/device.dart';
+import 'package:flutter_tools/src/project.dart';
 import 'package:mockito/mockito.dart';
 import 'package:process/process.dart';
 
@@ -59,6 +61,27 @@ void main() {
       Platform: () => notLinux,
     });
   });
+
+  testUsingContext('LinuxDevice.isSupportedForProject is true with editable host app', () async {
+    fs.file('pubspec.yaml').createSync();
+    fs.file('.packages').createSync();
+    fs.directory('linux').createSync();
+    final FlutterProject flutterProject = await FlutterProject.current();
+
+    expect(LinuxDevice().isSupportedForProject(flutterProject), true);
+  }, overrides: <Type, Generator>{
+    FileSystem: () => MemoryFileSystem(),
+  });
+
+  testUsingContext('LinuxDevice.isSupportedForProject is false with no host app', () async {
+    fs.file('pubspec.yaml').createSync();
+    fs.file('.packages').createSync();
+    final FlutterProject flutterProject = await FlutterProject.current();
+
+    expect(LinuxDevice().isSupportedForProject(flutterProject), false);
+  }, overrides: <Type, Generator>{
+    FileSystem: () => MemoryFileSystem(),
+  });
 }
 
 class MockPlatform extends Mock implements Platform {}

packages/flutter_tools/test/macos/macos_device_test.dart

@@ -4,7 +4,9 @@
 
 import 'dart:convert';
 
+import 'package:file/memory.dart';
 import 'package:flutter_tools/src/base/context.dart';
+import 'package:flutter_tools/src/project.dart';
 import 'package:mockito/mockito.dart';
 import 'package:process/process.dart';
 
@@ -106,6 +108,27 @@ tester    17193   0.0  0.2  4791128  37820   ??  S     2:27PM   0:00.09 /Applica
     }, overrides: <Type, Generator>{
       Platform: () => notMac,
     });
+
+    testUsingContext('isSupportedForProject is true with editable host app', () async {
+      fs.file('pubspec.yaml').createSync();
+      fs.file('.packages').createSync();
+      fs.directory('macos').createSync();
+      final FlutterProject flutterProject = await FlutterProject.current();
+
+      expect(MacOSDevice().isSupportedForProject(flutterProject), true);
+    }, overrides: <Type, Generator>{
+      FileSystem: () => MemoryFileSystem(),
+    });
+
+    testUsingContext('isSupportedForProject is false with no host app', () async {
+      fs.file('pubspec.yaml').createSync();
+      fs.file('.packages').createSync();
+      final FlutterProject flutterProject = await FlutterProject.current();
+
+      expect(MacOSDevice().isSupportedForProject(flutterProject), false);
+    }, overrides: <Type, Generator>{
+      FileSystem: () => MemoryFileSystem(),
+    });
   });
 }
 

packages/flutter_tools/test/src/mocks.dart

@@ -379,6 +379,9 @@ class MockAndroidDevice extends Mock implements AndroidDevice {
 
   @override
   bool isSupported() => true;
+
+  @override
+  bool isSupportedForProject(FlutterProject flutterProject) => true;
 }
 
 class MockIOSDevice extends Mock implements IOSDevice {
@@ -387,6 +390,9 @@ class MockIOSDevice extends Mock implements IOSDevice {
 
   @override
   bool isSupported() => true;
+
+  @override
+  bool isSupportedForProject(FlutterProject flutterProject) => true;
 }
 
 class MockIOSSimulator extends Mock implements IOSSimulator {
@@ -395,6 +401,9 @@ class MockIOSSimulator extends Mock implements IOSSimulator {
 
   @override
   bool isSupported() => true;
+
+  @override
+  bool isSupportedForProject(FlutterProject flutterProject) => true;
 }
 
 class MockDeviceLogReader extends DeviceLogReader {

packages/flutter_tools/test/windows/windows_device_test.dart

@@ -2,10 +2,12 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+import 'package:file/memory.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/project.dart';
 import 'package:flutter_tools/src/windows/application_package.dart';
 import 'package:flutter_tools/src/windows/windows_device.dart';
 import 'package:flutter_tools/src/device.dart';
@@ -58,6 +60,27 @@ void main() {
     }, overrides: <Type, Generator>{
       Platform: () => notWindows,
     });
+
+    testUsingContext('isSupportedForProject is true with editable host app', () async {
+      fs.file('pubspec.yaml').createSync();
+      fs.file('.packages').createSync();
+      fs.directory('windows').createSync();
+      final FlutterProject flutterProject = await FlutterProject.current();
+
+      expect(WindowsDevice().isSupportedForProject(flutterProject), true);
+    }, overrides: <Type, Generator>{
+      FileSystem: () => MemoryFileSystem(),
+    });
+
+    testUsingContext('isSupportedForProject is false with no host app', () async {
+      fs.file('pubspec.yaml').createSync();
+      fs.file('.packages').createSync();
+      final FlutterProject flutterProject = await FlutterProject.current();
+
+      expect(WindowsDevice().isSupportedForProject(flutterProject), false);
+    }, overrides: <Type, Generator>{
+      FileSystem: () => MemoryFileSystem(),
+    });
   });
 }
 
@@ -71,4 +94,4 @@ class MockProcessManager extends Mock implements ProcessManager {}
 
 class MockProcess extends Mock implements Process {}
 
-class MockProcessResult extends Mock implements ProcessResult {}
\ No newline at end of file
+class MockProcessResult extends Mock implements ProcessResult {}