--- /dev/null
+<?php
+
+namespace Drupal\Tests\comment\Kernel\Migrate\d7;
+
+use Drupal\field\Entity\FieldStorageConfig;
+use Drupal\field\FieldStorageConfigInterface;
+use Drupal\Tests\migrate_drupal\Kernel\d7\MigrateDrupal7TestBase;
+
+/**
+ * Tests creation of comment reference fields for each comment type defined
+ * in Drupal 7.
+ *
+ * @group comment
+ */
+class MigrateCommentFieldTest extends MigrateDrupal7TestBase {
+
+ public static $modules = ['node', 'comment', 'text', 'menu_ui'];
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function setUp() {
+ parent::setUp();
+ $this->installConfig(static::$modules);
+ $this->executeMigrations([
+ 'd7_node_type',
+ 'd7_comment_type',
+ 'd7_comment_field',
+ ]);
+ }
+
+ /**
+ * Asserts a comment field entity.
+ *
+ * @param string $id
+ * The entity ID.
+ * @param string $comment_type
+ * The comment type (bundle ID) the field references.
+ */
+ protected function assertEntity($id, $comment_type) {
+ $entity = FieldStorageConfig::load($id);
+ $this->assertTrue($entity instanceof FieldStorageConfigInterface);
+ /** @var \Drupal\field\FieldStorageConfigInterface $entity */
+ $this->assertIdentical('node', $entity->getTargetEntityTypeId());
+ $this->assertIdentical('comment', $entity->getType());
+ $this->assertIdentical($comment_type, $entity->getSetting('comment_type'));
+ }
+
+ /**
+ * Tests the migrated fields.
+ */
+ public function testMigration() {
+ $this->assertEntity('node.comment_node_page', 'comment_node_page');
+ $this->assertEntity('node.comment_node_article', 'comment_node_article');
+ $this->assertEntity('node.comment_node_blog', 'comment_node_blog');
+ $this->assertEntity('node.comment_node_book', 'comment_node_book');
+ $this->assertEntity('node.comment_node_forum', 'comment_node_forum');
+ $this->assertEntity('node.comment_node_test_content_type', 'comment_node_test_content_type');
+ }
+
+}