--- /dev/null
+<?php
+
+namespace Drupal\Tests\comment\Kernel\Migrate\d6;
+
+use Drupal\Core\Entity\Entity\EntityFormDisplay;
+use Drupal\Tests\migrate_drupal\Kernel\d6\MigrateDrupal6TestBase;
+
+/**
+ * Upgrade comment subject variable to core.entity_form_display.comment.*.default.yml
+ *
+ * @group migrate_drupal_6
+ */
+class MigrateCommentVariableEntityFormDisplaySubjectTest extends MigrateDrupal6TestBase {
+
+ /**
+ * {@inheritdoc}
+ */
+ public static $modules = ['comment'];
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function setUp() {
+ parent::setUp();
+ $this->installConfig(['comment']);
+ $this->executeMigrations([
+ 'd6_comment_type',
+ 'd6_comment_entity_form_display_subject',
+ ]);
+ }
+
+ /**
+ * Tests comment subject variable migrated into an entity display.
+ */
+ public function testCommentEntityFormDisplay() {
+ $component = EntityFormDisplay::load('comment.comment.default')
+ ->getComponent('subject');
+ $this->assertIdentical('string_textfield', $component['type']);
+ $this->assertIdentical(10, $component['weight']);
+ $component = EntityFormDisplay::load('comment.comment_no_subject.default')
+ ->getComponent('subject');
+ $this->assertNull($component);
+ }
+
+}