diff --git a/tests/src/Kernel/Migrate/d7/MigrateMetatagTest.php b/tests/src/Kernel/Migrate/d7/MigrateMetatagTest.php
index 59fe2f0..0f7b79b 100644
--- a/tests/src/Kernel/Migrate/d7/MigrateMetatagTest.php
+++ b/tests/src/Kernel/Migrate/d7/MigrateMetatagTest.php
@@ -7,7 +7,6 @@
 use Drupal\taxonomy\Entity\Term;
 use Drupal\taxonomy\TermInterface;
 use Drupal\Tests\migrate_drupal\Kernel\d7\MigrateDrupal7TestBase;
-use Drupal\Tests\file\Kernel\Migrate\d7\FileMigrationSetupTrait;
 use Drupal\user\Entity\User;
 use Drupal\user\UserInterface;
 
@@ -18,9 +17,6 @@
  */
 class MigrateMetatagTest extends MigrateDrupal7TestBase {
 
-  // Leverage some methods from the file migration system.
-  use FileMigrationSetupTrait;
-
   /**
    * {@inheritdoc}
    */
@@ -39,6 +35,34 @@ class MigrateMetatagTest extends MigrateDrupal7TestBase {
     'metatag',
   ];
 
+  /**
+   * Prepare the file migration for running.
+   *
+   * Copied from FileMigrationSetupTrait from 8.4 so that this doesn't have to
+   * then also extend getFileMigrationInfo().
+   */
+  protected function fileMigrationSetup() {
+    $this->installSchema('file', ['file_usage']);
+    $this->installEntitySchema('file');
+    $this->container->get('stream_wrapper_manager')
+      ->registerWrapper('public', PublicStream::class, StreamWrapperInterface::NORMAL);
+
+    $fs = \Drupal::service('file_system');
+    // The public file directory active during the test will serve as the
+    // root of the fictional Drupal 7 site we're migrating.
+    $fs->mkdir('public://sites/default/files', NULL, TRUE);
+    file_put_contents('public://sites/default/files/cube.jpeg', str_repeat('*', 3620));
+
+    /** @var \Drupal\migrate\Plugin\Migration $migration */
+    $migration = $this->getMigration('d7_file');
+    // Set the source plugin's source_base_path configuration value, which
+    // would normally be set by the user running the migration.
+    $source = $migration->getSourceConfiguration();
+    $source['constants']['source_base_path'] = $fs->realpath('public://');
+    $migration->set('source', $source);
+    $this->executeMigration($migration);
+  }
+
   /**
    * {@inheritdoc}
    */