fix: Truncate multibyte namespaces in command

Author: neznaika0

system/Commands/Utilities/Namespaces.php

@@ -120,10 +120,10 @@ private function outputAllNamespaces(array $params): array
 
     private function truncate(string $string, int $max): string
     {
-        $length = strlen($string);
+        $length = mb_strlen($string);
 
         if ($length > $max) {
-            return substr($string, 0, $max - 3) . '...';
+            return mb_substr($string, 0, $max - 3) . '...';
         }
 
         return $string;

tests/system/Commands/Utilities/NamespacesTest.php

@@ -14,6 +14,7 @@
 namespace CodeIgniter\Commands\Utilities;
 
 use CodeIgniter\Test\CIUnitTestCase;
+use CodeIgniter\Test\ReflectionHelper;
 use CodeIgniter\Test\StreamFilterTrait;
 use PHPUnit\Framework\Attributes\Group;
 
@@ -24,6 +25,7 @@
 final class NamespacesTest extends CIUnitTestCase
 {
     use StreamFilterTrait;
+    use ReflectionHelper;
 
     protected function setUp(): void
     {
@@ -84,4 +86,14 @@ public function testNamespacesCommandAllNamespaces(): void
             str_replace(' ', '', $this->getBuffer())
         );
     }
+
+    public function testTruncateNamespaces(): void
+    {
+        $commandObject  = new Namespaces(service('logger'), service('commands'));
+        $truncateRunner = $this->getPrivateMethodInvoker($commandObject, 'truncate');
+
+        $this->assertSame('App\Controllers\...', $truncateRunner('App\Controllers\Admin', 19));
+        // multibyte namespace
+        $this->assertSame('App\Контроллеры\...', $truncateRunner('App\Контроллеры\Админ', 19));
+    }
 }