Test node bundle

web/modules/custom/example/src/PostWrapper.php

@@ -0,0 +1,16 @@
+<?php
+
+namespace Drupal\example;
+
+use Drupal\node\NodeInterface;
+
+final class PostWrapper {
+
+  public function __construct(private NodeInterface $post) {
+  }
+
+  public function getType(): string {
+    return $this->post->bundle();
+  }
+
+}

web/modules/custom/example/tests/src/Unit/PostWrapperTest.php

@@ -2,6 +2,7 @@
 
 namespace Drupal\Tests\example\Unit;
 
+use Drupal\example\PostWrapper;
 use Drupal\node\NodeInterface;
 use Drupal\Tests\UnitTestCase;
 
@@ -15,8 +16,12 @@ final class PostWrapperTest extends UnitTestCase {
     $node = $this->createMock(NodeInterface::class);
     $node->method('bundle')->willReturn('post');
 
+    $wrapper = new PostWrapper($node);
+
     self::assertInstanceOf(NodeInterface::class, $node);
     self::assertSame('post', $node->bundle());
+
+    self::assertSame('post', $wrapper->getType());
   }
 
 }