[tool] In `flutter doctor -v`, warn when Android Studio version could not be detected. (#126395)

Fixes #122081.

When validating an Android Studio installation, add a warning validation message when we are unable to detect the version. This is because we have logic throughout the tool (JDK/JRE-searching) that is at higher risk of failing when we don't know the version.

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

@@ -16,12 +16,17 @@ const String _androidStudioPreviewTitle = 'Android Studio Preview';
 const String _androidStudioPreviewId = 'AndroidStudioPreview';
 
 class AndroidStudioValidator extends DoctorValidator {
-  AndroidStudioValidator(this._studio, { required FileSystem fileSystem })
-    : _fileSystem = fileSystem,
+  AndroidStudioValidator(this._studio, {
+    required FileSystem fileSystem,
+    required UserMessages userMessages,
+  })
+    : _userMessages = userMessages,
+      _fileSystem = fileSystem,
       super('Android Studio');
 
   final AndroidStudio _studio;
   final FileSystem _fileSystem;
+  final UserMessages _userMessages;
 
   static const Map<String, String> idToTitle = <String, String>{
     _androidStudioId: _androidStudioTitle,
@@ -35,7 +40,7 @@ class AndroidStudioValidator extends DoctorValidator {
         NoAndroidStudioValidator(config: config, platform: platform, userMessages: userMessages)
       else
         ...studios.map<DoctorValidator>(
-          (AndroidStudio studio) => AndroidStudioValidator(studio, fileSystem: fileSystem)
+          (AndroidStudio studio) => AndroidStudioValidator(studio, fileSystem: fileSystem, userMessages: userMessages)
         ),
     ];
   }
@@ -45,11 +50,11 @@ class AndroidStudioValidator extends DoctorValidator {
     final List<ValidationMessage> messages = <ValidationMessage>[];
     ValidationType type = ValidationType.missing;
 
-    final String? studioVersionText = _studio.version == null
-      ? null
-      : userMessages.androidStudioVersion(_studio.version.toString());
+    final String studioVersionText = _studio.version == null
+      ? _userMessages.androidStudioVersion('unknown')
+      : _userMessages.androidStudioVersion(_studio.version.toString());
     messages.add(ValidationMessage(
-      userMessages.androidStudioLocation(_studio.directory),
+      _userMessages.androidStudioLocation(_studio.directory),
     ));
 
     if (_studio.pluginsPath != null) {
@@ -69,6 +74,10 @@ class AndroidStudioValidator extends DoctorValidator {
       );
     }
 
+    if (_studio.version == null) {
+      messages.add(const ValidationMessage.error('Unable to determine Android Studio version.'));
+    }
+
     if (_studio.isValid) {
       type = _hasIssues(messages)
         ? ValidationType.partial
@@ -81,9 +90,9 @@ class AndroidStudioValidator extends DoctorValidator {
       messages.addAll(_studio.validationMessages.map<ValidationMessage>(
         (String m) => ValidationMessage.error(m),
       ));
-      messages.add(ValidationMessage(userMessages.androidStudioNeedsUpdate));
+      messages.add(ValidationMessage(_userMessages.androidStudioNeedsUpdate));
       if (_studio.configuredPath != null) {
-        messages.add(ValidationMessage(userMessages.androidStudioResetDir));
+        messages.add(ValidationMessage(_userMessages.androidStudioResetDir));
       }
     }
 

packages/flutter_tools/lib/src/vscode/vscode_validator.dart

@@ -23,13 +23,20 @@ class VsCodeValidator extends DoctorValidator {
 
   @override
   Future<ValidationResult> validate() async {
-    final String? vsCodeVersionText = _vsCode.version == null
-        ? null
+    final List<ValidationMessage> validationMessages =
+      List<ValidationMessage>.from(_vsCode.validationMessages);
+
+    final String vsCodeVersionText = _vsCode.version == null
+        ? userMessages.vsCodeVersion('unknown')
         : userMessages.vsCodeVersion(_vsCode.version.toString());
 
+    if (_vsCode.version == null) {
+      validationMessages.add(const ValidationMessage.error('Unable to determine VS Code version.'));
+    }
+
     return ValidationResult(
       ValidationType.success,
-      _vsCode.validationMessages.toList(),
+      validationMessages,
       statusInfo: vsCodeVersionText,
     );
   }

packages/flutter_tools/test/general.shard/android/android_studio_validator_test.dart

@@ -3,14 +3,17 @@
 // found in the LICENSE file.
 
 import 'package:file/memory.dart';
+import 'package:flutter_tools/src/android/android_studio.dart';
 import 'package:flutter_tools/src/android/android_studio_validator.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/base/platform.dart';
 import 'package:flutter_tools/src/base/user_messages.dart';
+import 'package:flutter_tools/src/base/version.dart';
 import 'package:flutter_tools/src/doctor_validator.dart';
 import 'package:flutter_tools/src/globals.dart' as globals;
+import 'package:test/fake.dart';
 
 import '../../src/common.dart';
 import '../../src/context.dart';
@@ -23,6 +26,7 @@ final Platform linuxPlatform = FakePlatform(
 );
 
 void main() {
+
   late FileSystem fileSystem;
   late FakeProcessManager fakeProcessManager;
 
@@ -31,49 +35,76 @@ void main() {
     fakeProcessManager = FakeProcessManager.empty();
   });
 
-  testWithoutContext('NoAndroidStudioValidator shows Android Studio as "not available" when not available.', () async {
-    final Config config = Config.test();
-    final NoAndroidStudioValidator validator = NoAndroidStudioValidator(
-      config: config,
-      platform: linuxPlatform,
-      userMessages: UserMessages(),
-    );
+  group(NoAndroidStudioValidator, () {
+    testWithoutContext('shows Android Studio as "not available" when not available.', () async {
+      final Config config = Config.test();
+      final NoAndroidStudioValidator validator = NoAndroidStudioValidator(
+        config: config,
+        platform: linuxPlatform,
+        userMessages: UserMessages(),
+      );
 
-    expect((await validator.validate()).type, equals(ValidationType.notAvailable));
+      expect((await validator.validate()).type, equals(ValidationType.notAvailable));
+    });
   });
 
-  testUsingContext('AndroidStudioValidator gives doctor error on java crash', () async {
-    fakeProcessManager.addCommand(const FakeCommand(
-      command: <String>[
-        '/opt/android-studio-with-cheese-5.0/jre/bin/java',
-        '-version',
-      ],
-      exception: ProcessException('java', <String>['-version']),
-    ));
-    const String installPath = '/opt/android-studio-with-cheese-5.0';
-    const String studioHome = '$home/.AndroidStudioWithCheese5.0';
-    const String homeFile = '$studioHome/system/.home';
-    globals.fs.directory(installPath).createSync(recursive: true);
-    globals.fs.file(homeFile).createSync(recursive: true);
-    globals.fs.file(homeFile).writeAsStringSync(installPath);
+  group(AndroidStudioValidator, () {
+    testUsingContext('gives doctor error on java crash', () async {
+      fakeProcessManager.addCommand(const FakeCommand(
+        command: <String>[
+          '/opt/android-studio-with-cheese-5.0/jre/bin/java',
+          '-version',
+        ],
+        exception: ProcessException('java', <String>['-version']),
+      ));
+      const String installPath = '/opt/android-studio-with-cheese-5.0';
+      const String studioHome = '$home/.AndroidStudioWithCheese5.0';
+      const String homeFile = '$studioHome/system/.home';
+      globals.fs.directory(installPath).createSync(recursive: true);
+      globals.fs.file(homeFile).createSync(recursive: true);
+      globals.fs.file(homeFile).writeAsStringSync(installPath);
+
+      // This checks that running the validator doesn't throw an unhandled
+      // exception and that the ProcessException makes it into the error
+      // message list.
+      for (final DoctorValidator validator in AndroidStudioValidator.allValidators(globals.config, globals.platform, globals.fs, globals.userMessages)) {
+        final ValidationResult result = await validator.validate();
+        expect(result.messages.where((ValidationMessage message) {
+          return message.isError && message.message.contains('ProcessException');
+        }).isNotEmpty, true);
+      }
+      expect(fakeProcessManager, hasNoRemainingExpectations);
+    }, overrides: <Type, Generator>{
+      FileSystem: () => fileSystem,
+      ProcessManager: () => fakeProcessManager,
+      Platform: () => linuxPlatform,
+      FileSystemUtils: () => FileSystemUtils(
+        fileSystem: fileSystem,
+        platform: linuxPlatform,
+      ),
+    });
 
-    // This checks that running the validator doesn't throw an unhandled
-    // exception and that the ProcessException makes it into the error
-    // message list.
-    for (final DoctorValidator validator in AndroidStudioValidator.allValidators(globals.config, globals.platform, globals.fs, globals.userMessages)) {
+    testWithoutContext('warns if version of Android Studio could not be determined', () async {
+      final AndroidStudio studio = _FakeAndroidStudio();
+      final AndroidStudioValidator validator = AndroidStudioValidator(studio, fileSystem: fileSystem, userMessages: UserMessages());
       final ValidationResult result = await validator.validate();
-      expect(result.messages.where((ValidationMessage message) {
-        return message.isError && message.message.contains('ProcessException');
-      }).isNotEmpty, true);
-    }
-    expect(fakeProcessManager, hasNoRemainingExpectations);
-  }, overrides: <Type, Generator>{
-    FileSystem: () => fileSystem,
-    ProcessManager: () => fakeProcessManager,
-    Platform: () => linuxPlatform,
-    FileSystemUtils: () => FileSystemUtils(
-      fileSystem: fileSystem,
-      platform: linuxPlatform,
-    ),
+      expect(result.messages, contains(const ValidationMessage.error('Unable to determine Android Studio version.')));
+      expect(result.statusInfo, 'version unknown');
+    });
   });
 }
+
+class _FakeAndroidStudio extends Fake implements AndroidStudio {
+  @override
+  List<String> get validationMessages => <String>[];
+  @override
+  bool get isValid => true;
+  @override
+  String? get pluginsPath => null;
+  @override
+  String get directory => 'android-studio';
+  @override
+  Version? get version => null;
+  @override
+  String get javaPath => 'android-studio/jbr/bin/java';
+}

packages/flutter_tools/test/general.shard/vscode/vscode_validator_test.dart

@@ -5,10 +5,15 @@
 import 'package:file/memory.dart';
 import 'package:flutter_tools/src/base/file_system.dart';
 import 'package:flutter_tools/src/base/platform.dart';
+import 'package:flutter_tools/src/base/user_messages.dart';
+import 'package:flutter_tools/src/base/version.dart';
+import 'package:flutter_tools/src/doctor_validator.dart';
 import 'package:flutter_tools/src/vscode/vscode.dart';
+import 'package:flutter_tools/src/vscode/vscode_validator.dart';
+import 'package:test/fake.dart';
 
 import '../../src/common.dart';
-import '../../src/fake_process_manager.dart';
+import '../../src/context.dart';
 
 void main() {
   testWithoutContext('VsCode search locations on windows supports an empty environment', () {
@@ -20,4 +25,26 @@ void main() {
 
     expect(VsCode.allInstalled(fileSystem, platform, FakeProcessManager.any()), isEmpty);
   });
+
+  group(VsCodeValidator, () {
+    testUsingContext('Warns if VS Code version could not be found', () async {
+      final VsCodeValidator validator = VsCodeValidator(_FakeVsCode());
+      final ValidationResult result = await validator.validate();
+      expect(result.messages, contains(const ValidationMessage.error('Unable to determine VS Code version.')));
+      expect(result.statusInfo, 'version unknown');
+    }, overrides: <Type, Generator>{
+      UserMessages: () => UserMessages(),
+    });
+  });
+}
+
+class _FakeVsCode extends Fake implements VsCode {
+  @override
+  Iterable<ValidationMessage> get validationMessages => <ValidationMessage>[];
+
+  @override
+  String get productName => 'VS Code';
+
+  @override
+  Version? get version => null;
 }