Forward missing pub commands (#30115)

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

diff --git a/packages/flutter_tools/lib/src/commands/packages.dart b/packages/flutter_tools/lib/src/commands/packages.dart
index e31b3ad..2740a29 100644
--- a/packages/flutter_tools/lib/src/commands/packages.dart
+++ b/packages/flutter_tools/lib/src/commands/packages.dart
@@ -15,6 +15,14 @@
     addSubcommand(PackagesGetCommand('get', false));
     addSubcommand(PackagesGetCommand('upgrade', true));
     addSubcommand(PackagesTestCommand());
+    addSubcommand(PackagesForwardCommand('downgrade', 'Downgrade packages in a Flutter project', requiresPubspec: true));
+    addSubcommand(PackagesForwardCommand('publish', 'Publish the current package to pub.dartlang.org', requiresPubspec: true));
+    addSubcommand(PackagesForwardCommand('deps', 'Print package dependencies', requiresPubspec: true));
+    addSubcommand(PackagesForwardCommand('run', 'Run an executable from a package', requiresPubspec: true));
+    addSubcommand(PackagesForwardCommand('cache', 'Work with the Pub system cache'));
+    addSubcommand(PackagesForwardCommand('version', 'Print Pub version'));
+    addSubcommand(PackagesForwardCommand('uploader', 'Manage uploaders for a package on pub.dartlang.org'));
+    addSubcommand(PackagesForwardCommand('global', 'Work with Pub global packages'));
     addSubcommand(PackagesPassthroughCommand());
   }
 
@@ -129,6 +137,37 @@
   }
 }
 
+class PackagesForwardCommand extends FlutterCommand {
+  PackagesForwardCommand(this._commandName, this._description, {bool requiresPubspec = false}) {
+    if (requiresPubspec) {
+      requiresPubspecYaml();
+    }
+  }
+  final String _commandName;
+  final String _description;
+
+  @override
+  String get name => _commandName;
+
+  @override
+  String get description {
+    return '$_description.\n'
+           'This runs the "pub" tool in a Flutter context.';
+  }
+
+  @override
+  String get invocation {
+    return '${runner.executableName} packages $_commandName [<arguments...>]';
+  }
+
+  @override
+  Future<FlutterCommandResult> runCommand() async {
+    await pub(<String>[_commandName]..addAll(argResults.rest), context: PubContext.pubForward, retry: false);
+    return null;
+  }
+
+}
+
 class PackagesPassthroughCommand extends FlutterCommand {
   PackagesPassthroughCommand() {
     requiresPubspecYaml();

packages/flutter_tools/lib/src/dart/pub.dart

diff --git a/packages/flutter_tools/lib/src/dart/pub.dart b/packages/flutter_tools/lib/src/dart/pub.dart
index d347d0a..5c53c2c 100644
--- a/packages/flutter_tools/lib/src/dart/pub.dart
+++ b/packages/flutter_tools/lib/src/dart/pub.dart
@@ -41,6 +41,7 @@
   static final PubContext interactive = PubContext._(<String>['interactive']);
   static final PubContext pubGet = PubContext._(<String>['get']);
   static final PubContext pubUpgrade = PubContext._(<String>['upgrade']);
+  static final PubContext pubForward = PubContext._(<String>['forward']);
   static final PubContext runTest = PubContext._(<String>['run_test']);
 
   static final PubContext flutterTests = PubContext._(<String>['flutter_tests']);

packages/flutter_tools/test/commands/packages_test.dart

diff --git a/packages/flutter_tools/test/commands/packages_test.dart b/packages/flutter_tools/test/commands/packages_test.dart
index 2d37e95..94dfbae 100644
--- a/packages/flutter_tools/test/commands/packages_test.dart
+++ b/packages/flutter_tools/test/commands/packages_test.dart
@@ -308,7 +308,7 @@
       Stdio: () => mockStdio,
     });
 
-    testUsingContext('publish', () async {
+    testUsingContext('pub publish', () async {
       final PromptingProcess process = PromptingProcess();
       mockProcessManager.processFactory = (List<String> commands) => process;
       final Future<void> runPackages = createTestCommandRunner(PackagesCommand()).run(<String>['packages', 'pub', 'publish']);
@@ -331,5 +331,84 @@
       ProcessManager: () => mockProcessManager,
       Stdio: () => mockStdio,
     });
+
+    testUsingContext('publish', () async {
+      await createTestCommandRunner(PackagesCommand()).run(<String>['packages', 'publish']);
+      final List<String> commands = mockProcessManager.commands;
+      expect(commands, hasLength(3));
+      expect(commands[0], matches(r'dart-sdk[\\/]bin[\\/]pub'));
+      expect(commands[1], '--trace');
+      expect(commands[2], 'publish');
+    }, overrides: <Type, Generator>{
+      ProcessManager: () => mockProcessManager,
+      Stdio: () => mockStdio,
+      BotDetector: () => const AlwaysTrueBotDetector(),
+    });
+
+    testUsingContext('deps', () async {
+      await createTestCommandRunner(PackagesCommand()).run(<String>['packages', 'deps']);
+      final List<String> commands = mockProcessManager.commands;
+      expect(commands, hasLength(3));
+      expect(commands[0], matches(r'dart-sdk[\\/]bin[\\/]pub'));
+      expect(commands[1], '--trace');
+      expect(commands[2], 'deps');
+    }, overrides: <Type, Generator>{
+      ProcessManager: () => mockProcessManager,
+      Stdio: () => mockStdio,
+      BotDetector: () => const AlwaysTrueBotDetector(),
+    });
+
+    testUsingContext('cache', () async {
+      await createTestCommandRunner(PackagesCommand()).run(<String>['packages', 'cache']);
+      final List<String> commands = mockProcessManager.commands;
+      expect(commands, hasLength(3));
+      expect(commands[0], matches(r'dart-sdk[\\/]bin[\\/]pub'));
+      expect(commands[1], '--trace');
+      expect(commands[2], 'cache');
+    }, overrides: <Type, Generator>{
+      ProcessManager: () => mockProcessManager,
+      Stdio: () => mockStdio,
+      BotDetector: () => const AlwaysTrueBotDetector(),
+    });
+
+    testUsingContext('version', () async {
+      await createTestCommandRunner(PackagesCommand()).run(<String>['packages', 'version']);
+      final List<String> commands = mockProcessManager.commands;
+      expect(commands, hasLength(3));
+      expect(commands[0], matches(r'dart-sdk[\\/]bin[\\/]pub'));
+      expect(commands[1], '--trace');
+      expect(commands[2], 'version');
+    }, overrides: <Type, Generator>{
+      ProcessManager: () => mockProcessManager,
+      Stdio: () => mockStdio,
+      BotDetector: () => const AlwaysTrueBotDetector(),
+    });
+
+    testUsingContext('uploader', () async {
+      await createTestCommandRunner(PackagesCommand()).run(<String>['packages', 'uploader']);
+      final List<String> commands = mockProcessManager.commands;
+      expect(commands, hasLength(3));
+      expect(commands[0], matches(r'dart-sdk[\\/]bin[\\/]pub'));
+      expect(commands[1], '--trace');
+      expect(commands[2], 'uploader');
+    }, overrides: <Type, Generator>{
+      ProcessManager: () => mockProcessManager,
+      Stdio: () => mockStdio,
+      BotDetector: () => const AlwaysTrueBotDetector(),
+    });
+
+    testUsingContext('global', () async {
+      await createTestCommandRunner(PackagesCommand()).run(<String>['packages', 'global', 'list']);
+      final List<String> commands = mockProcessManager.commands;
+      expect(commands, hasLength(4));
+      expect(commands[0], matches(r'dart-sdk[\\/]bin[\\/]pub'));
+      expect(commands[1], '--trace');
+      expect(commands[2], 'global');
+      expect(commands[3], 'list');
+    }, overrides: <Type, Generator>{
+      ProcessManager: () => mockProcessManager,
+      Stdio: () => mockStdio,
+      BotDetector: () => const AlwaysTrueBotDetector(),
+    });
   });
 }