feat(flutter_tools): Added doctor path printing on verbose (#95453)

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

@@ -25,6 +25,7 @@ class UserMessages {
   String engineRevision(String revision) => 'Engine revision $revision';
   String dartRevision(String revision) => 'Dart version $revision';
   String devToolsVersion(String version) => 'DevTools version $version';
+  String userPath(String? path) => 'PATH = $path';
   String pubMirrorURL(String url) => 'Pub download mirror $url';
   String flutterMirrorURL(String url) => 'Flutter download mirror $url';
   String get flutterBinariesDoNotRun =>

packages/flutter_tools/lib/src/doctor.dart

@@ -458,6 +458,7 @@ class FlutterValidator extends DoctorValidator {
       messages.add(ValidationMessage(_userMessages.engineRevision(version.engineRevisionShort)));
       messages.add(ValidationMessage(_userMessages.dartRevision(version.dartSdkVersion)));
       messages.add(ValidationMessage(_userMessages.devToolsVersion(_devToolsVersion())));
+      messages.add(ValidationMessage(_userMessages.userPath(_platform.environment['PATH'])));
       final String? pubUrl = _platform.environment['PUB_HOSTED_URL'];
       if (pubUrl != null) {
         messages.add(ValidationMessage(_userMessages.pubMirrorURL(pubUrl)));

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

@@ -188,6 +188,31 @@ void main() {
     ));
   });
 
+  testWithoutContext('FlutterValidator shows PATH environment variable when set', () async {
+    final FlutterValidator flutterValidator = FlutterValidator(
+      platform: FakePlatform(
+        localeName: 'en_US.UTF-8',
+        environment: <String, String> {
+          'PATH': '/usr/bin:/usr/local/bin:/home/user/.bin',
+        },
+      ),
+      flutterVersion: () => FakeFlutterVersion(frameworkVersion: '1.0.0'),
+      devToolsVersion: () => '2.8.0',
+      userMessages: UserMessages(),
+      artifacts: Artifacts.test(),
+      fileSystem: MemoryFileSystem.test(),
+      processManager: FakeProcessManager.any(),
+      operatingSystemUtils: FakeOperatingSystemUtils(name: 'Linux'),
+      flutterRoot: () => 'sdk/flutter',
+    );
+
+    expect(await flutterValidator.validate(), _matchDoctorValidation(
+      validationType: ValidationType.installed,
+      statusInfo: 'Channel unknown, 1.0.0, on Linux, locale en_US.UTF-8',
+      messages: contains(const ValidationMessage('PATH = /usr/bin:/usr/local/bin:/home/user/.bin')),
+    ));
+  });
+
   group('FlutterValidator shows flutter upstream remote', () {
     testWithoutContext('default url', () async {
       final FlutterValidator flutterValidator = FlutterValidator(