--- /dev/null
+<?php
+
+namespace Drupal\Tests\comment\Functional;
+
+use Drupal\comment\Entity\Comment;
+use Drupal\field\Entity\FieldConfig;
+use Drupal\field\Entity\FieldStorageConfig;
+
+/**
+ * Tests that comments behave correctly when the node is changed.
+ *
+ * @group comment
+ */
+class CommentNodeChangesTest extends CommentTestBase {
+
+ /**
+ * Tests that comments are deleted with the node.
+ */
+ public function testNodeDeletion() {
+ $this->drupalLogin($this->webUser);
+ $comment = $this->postComment($this->node, $this->randomMachineName(), $this->randomMachineName());
+ $this->assertTrue($comment->id(), 'The comment could be loaded.');
+ $this->node->delete();
+ $this->assertFalse(Comment::load($comment->id()), 'The comment could not be loaded after the node was deleted.');
+ // Make sure the comment field storage and all its fields are deleted when
+ // the node type is deleted.
+ $this->assertNotNull(FieldStorageConfig::load('node.comment'), 'Comment field storage exists');
+ $this->assertNotNull(FieldConfig::load('node.article.comment'), 'Comment field exists');
+ // Delete the node type.
+ entity_delete_multiple('node_type', [$this->node->bundle()]);
+ $this->assertNull(FieldStorageConfig::load('node.comment'), 'Comment field storage deleted');
+ $this->assertNull(FieldConfig::load('node.article.comment'), 'Comment field deleted');
+ }
+
+}