Make the template plugin example depend on the plugin as a real dependency (#50485)

packages/flutter_tools/templates/app/pubspec.yaml.tmpl

@@ -25,6 +25,11 @@ dependencies:
   flutter:
     sdk: flutter
 
+{{#withPluginHook}}
+  {{pluginProjectName}}:
+    path: ../
+{{/withPluginHook}}
+
   # The following adds the Cupertino Icons font to your application.
   # Use with the CupertinoIcons class for iOS style icons.
   cupertino_icons: ^0.1.2
@@ -38,11 +43,6 @@ dev_dependencies:
   test: 1.9.4
 {{/withDriverTest}}
 
-{{#withPluginHook}}
-  {{pluginProjectName}}:
-    path: ../
-{{/withPluginHook}}
-
 # For information on the generic Dart part of this file, see the
 # following page: https://dart.dev/tools/pub/pubspec
 

packages/flutter_tools/test/commands.shard/permeable/create_test.dart

@@ -23,6 +23,7 @@ import 'package:flutter_tools/src/globals.dart' as globals;
 
 import 'package:mockito/mockito.dart';
 import 'package:process/process.dart';
+import 'package:pubspec_parse/pubspec_parse.dart';
 
 import '../../src/common.dart';
 import '../../src/context.dart';
@@ -325,6 +326,25 @@ void main() {
     Pub: () => const Pub(),
   });
 
+  testUsingContext('plugin example app depends on plugin', () async {
+    await _createProject(
+      projectDir,
+      <String>['--template=plugin', '-i', 'objc', '-a', 'java'],
+      <String>[
+        'example/pubspec.yaml',
+      ],
+    );
+    final String rawPubspec = await projectDir.childDirectory('example').childFile('pubspec.yaml').readAsString();
+    final Pubspec pubspec = Pubspec.parse(rawPubspec);
+    final String pluginName = projectDir.basename;
+    expect(pubspec.dependencies, contains(pluginName));
+    expect(pubspec.dependencies[pluginName] is PathDependency, isTrue);
+    final PathDependency pathDependency = pubspec.dependencies[pluginName] as PathDependency;
+    expect(pathDependency.path, '../');
+  }, overrides: <Type, Generator>{
+    Pub: () => const Pub(),
+  });
+
   testUsingContext('kotlin/swift plugin project', () async {
     return _createProject(
       projectDir,