diff -u b/core/modules/migrate/src/Tests/MigrateSkipRowTest.php b/core/modules/migrate/src/Tests/MigrateSkipRowTest.php
--- b/core/modules/migrate/src/Tests/MigrateSkipRowTest.php
+++ b/core/modules/migrate/src/Tests/MigrateSkipRowTest.php
@@ -37,7 +37,16 @@
     $config = [
       'id' => 'sample_data',
       'migration_tags' => ['prepare_row test'],
-      'source' => ['plugin' => 'data'],
+      'source' => [
+        'plugin' => 'embedded_data',
+        'data_rows' => [
+          ['id' => '1', 'data' => 'skip_and_record'],
+          ['id' => '2', 'data' => 'skip_and_dont_record']
+        ],
+        'ids' => [
+          'id' => ['type' => 'string'],
+        ],
+      ],
       'process' => ['value' => 'data'],
       'destination' => [
         'plugin' => 'config',
reverted:
--- b/core/modules/migrate/tests/modules/migrate_prepare_row_test/src/Plugin/migrate/source/DataSource.php
+++ /dev/null
@@ -1,59 +0,0 @@
-<?php
-
-/**
- * @file
- * Contains \Drupal\migrate_prepare_row_test\Plugin\migrate\source\DataSource.
- */
-
-namespace Drupal\migrate_prepare_row_test\Plugin\migrate\source;
-
-use Drupal\migrate\Plugin\migrate\source\SourcePluginBase;
-
-/**
- * Source returning a hard-coded data rows for testing.
- *
- * @MigrateSource(
- *   id = "data"
- * )
- */
-class DataSource extends SourcePluginBase {
-
-  /**
-   * {@inheritdoc}
-   */
-  public function fields() {
-    return array(
-      'data' => t('Data'),
-    );
-  }
-
-  /**
-   * {@inheritdoc}
-   */
-  public function initializeIterator() {
-    return new \ArrayIterator([
-      ['id' => '1', 'data' => 'skip_and_record'],
-      ['id' => '2', 'data' => 'skip_and_dont_record'],
-    ]);
-  }
-
-  public function __toString() {
-    return 'Sample data for testing';
-  }
-
-  /**
-   * {@inheritdoc}
-   */
-  public function getIds() {
-    $ids['id']['type'] = 'string';
-    return $ids;
-  }
-
-  /**
-   * {@inheritdoc}
-   */
-  public function count() {
-    return 2;
-  }
-
-}