Get analytics welcome message under test (#162627)

Fixes https://github.com/flutter/flutter/issues/160374

For this I resorted to a unit test directly against `exitWithHooks`
(which is called when the tool is shutting down). An integration test
against a "fresh" tool checkout would probably be more resilient, but
I'm not sure if a more heavyweight test is worth it.


<details>

<summary> Pre-launch checklist </summary> 


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there for submitting PRs.
- [x] I read the [Tree Hygiene] wiki page, which explains my
responsibilities.
- [x] I read and followed the [Flutter Style Guide], including [Features
we expect every widget to implement].
- [x] I signed the [CLA].
- [x] I listed at least one issue that this PR fixes in the description
above.
- [x] I updated/added relevant documentation (doc comments with `///`).
- [x] I added new tests to check the change I am making, or this PR is
[test-exempt].
- [x] I followed the [breaking change policy] and added [Data Driven
Fixes] where supported.
- [x] All existing and new tests are passing.

</details>


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

@@ -1541,8 +1541,6 @@ abstract class FlutterCommand extends Command<void> {
         if (_usesFatalWarnings) {
           globals.logger.fatalWarnings = boolArg(FlutterOptions.kFatalWarnings);
         }
-        // Prints the welcome message if needed.
-        globals.flutterUsage.printWelcome();
         _printDeprecationWarning();
         final String? commandPath = await usagePath;
         if (commandPath != null) {

packages/flutter_tools/test/general.shard/base/process_test.dart

@@ -4,14 +4,17 @@
 
 import 'dart:async';
 
+import 'package:file/memory.dart';
+import 'package:flutter_tools/src/base/io.dart' as io;
 import 'package:flutter_tools/src/base/io.dart';
 import 'package:flutter_tools/src/base/logger.dart';
 import 'package:flutter_tools/src/base/platform.dart';
 import 'package:flutter_tools/src/base/process.dart';
 import 'package:flutter_tools/src/base/terminal.dart';
+import 'package:unified_analytics/unified_analytics.dart';
 
 import '../../src/common.dart';
-import '../../src/fake_process_manager.dart';
+import '../../src/context.dart';
 import '../../src/fakes.dart';
 
 void main() {
@@ -393,6 +396,51 @@ void main() {
       expect(errorPassedToCallback, const TypeMatcher<SocketException>());
     });
   });
+
+  group('exitWithHooks', () {
+    late MemoryFileSystem fileSystem;
+    late BufferLogger logger;
+    late Analytics analytics;
+
+    setUp(() {
+      fileSystem = MemoryFileSystem.test();
+      logger = BufferLogger.test();
+      final FakeFlutterVersion fakeFlutterVersion = FakeFlutterVersion();
+      analytics = Analytics.fake(
+        tool: DashTool.flutterTool,
+        homeDirectory: fileSystem.currentDirectory,
+        dartVersion: fakeFlutterVersion.dartSdkVersion,
+        fs: fileSystem,
+        flutterChannel: fakeFlutterVersion.channel,
+        flutterVersion: fakeFlutterVersion.getVersionString(),
+      );
+    });
+
+    testUsingContext(
+      'prints analytics welcome message',
+      () async {
+        io.setExitFunctionForTests((int exitCode) {});
+        final ShutdownHooks shutdownHooks = ShutdownHooks();
+        await exitWithHooks(0, shutdownHooks: shutdownHooks);
+        expect(logger.statusText, contains(analytics.getConsentMessage));
+      },
+      overrides: <Type, Generator>{Analytics: () => analytics, Logger: () => logger},
+    );
+
+    testUsingContext(
+      'does not print analytics welcome message if Analytics instance indicates it should not be printed',
+      () async {
+        io.setExitFunctionForTests((int exitCode) {});
+
+        analytics.clientShowedMessage();
+
+        final ShutdownHooks shutdownHooks = ShutdownHooks();
+        await exitWithHooks(0, shutdownHooks: shutdownHooks);
+        expect(logger.statusText, isNot(contains(analytics.getConsentMessage)));
+      },
+      overrides: <Type, Generator>{Analytics: () => analytics, Logger: () => logger},
+    );
+  });
 }
 
 class _ThrowsOnFlushIOSink extends MemoryIOSink {