--- /dev/null
+<?php
+
+namespace Drupal\Tests\comment\Kernel\Plugin\migrate\source\d7;
+
+use Drupal\Tests\migrate\Kernel\MigrateSqlSourceTestBase;
+
+/**
+ * Tests D7 comment source plugin.
+ *
+ * @covers \Drupal\comment\Plugin\migrate\source\d7\Comment
+ * @group comment
+ */
+class CommentTest extends MigrateSqlSourceTestBase {
+
+ /**
+ * {@inheritdoc}
+ */
+ public static $modules = ['comment', 'migrate_drupal'];
+
+ /**
+ * {@inheritdoc}
+ */
+ public function providerSource() {
+ $tests = [];
+
+ // The source data.
+ $tests[0]['source_data']['comment'] = [
+ [
+ 'cid' => '1',
+ 'pid' => '0',
+ 'nid' => '1',
+ 'uid' => '1',
+ 'subject' => 'A comment',
+ 'hostname' => '::1',
+ 'created' => '1421727536',
+ 'changed' => '1421727536',
+ 'status' => '1',
+ 'thread' => '01/',
+ 'name' => 'admin',
+ 'mail' => '',
+ 'homepage' => '',
+ 'language' => 'und',
+ ],
+ ];
+ $tests[0]['source_data']['node'] = [
+ [
+ 'nid' => '1',
+ 'vid' => '1',
+ 'type' => 'test_content_type',
+ 'language' => 'en',
+ 'title' => 'A Node',
+ 'uid' => '1',
+ 'status' => '1',
+ 'created' => '1421727515',
+ 'changed' => '1421727515',
+ 'comment' => '2',
+ 'promote' => '1',
+ 'sticky' => '0',
+ 'tnid' => '0',
+ 'translate' => '0',
+ ],
+ ];
+ $tests[0]['source_data']['field_config_instance'] = [
+ [
+ 'id' => '14',
+ 'field_id' => '1',
+ 'field_name' => 'comment_body',
+ 'entity_type' => 'comment',
+ 'bundle' => 'comment_node_test_content_type',
+ 'data' => 'a:0:{}',
+ 'deleted' => '0',
+ ],
+ ];
+ $tests[0]['source_data']['field_data_comment_body'] = [
+ [
+ 'entity_type' => 'comment',
+ 'bundle' => 'comment_node_test_content_type',
+ 'deleted' => '0',
+ 'entity_id' => '1',
+ 'revision_id' => '1',
+ 'language' => 'und',
+ 'delta' => '0',
+ 'comment_body_value' => 'This is a comment',
+ 'comment_body_format' => 'filtered_html',
+ ],
+ ];
+
+ // The expected results.
+ $tests[0]['expected_data'] = [
+ [
+ 'cid' => '1',
+ 'pid' => '0',
+ 'nid' => '1',
+ 'uid' => '1',
+ 'subject' => 'A comment',
+ 'hostname' => '::1',
+ 'created' => '1421727536',
+ 'changed' => '1421727536',
+ 'status' => '1',
+ 'thread' => '01/',
+ 'name' => 'admin',
+ 'mail' => '',
+ 'homepage' => '',
+ 'language' => 'und',
+ 'comment_body' => [
+ [
+ 'value' => 'This is a comment',
+ 'format' => 'filtered_html',
+ ],
+ ],
+ ],
+ ];
+
+ return $tests;
+ }
+
+}