diff --git a/core/modules/migrate_drupal/tests/src/Kernel/MigrateCckFieldPluginManagerTest.php b/core/modules/migrate_drupal/tests/src/Kernel/MigrateCckFieldPluginManagerTest.php
index 9e30795..7eb68ba 100644
--- a/core/modules/migrate_drupal/tests/src/Kernel/MigrateCckFieldPluginManagerTest.php
+++ b/core/modules/migrate_drupal/tests/src/Kernel/MigrateCckFieldPluginManagerTest.php
@@ -22,28 +22,20 @@ class MigrateCckFieldPluginManagerTest extends MigrateDrupalTestBase {
   public function testPluginSelection() {
     $plugin_manager = \Drupal::service('plugin.manager.migrate.cckfield');
 
-    $plugin_id = $plugin_manager->getPluginIdFromFieldType('filefield', ['core' => 6]);
-    $this->assertIdentical('Drupal\\file\\Plugin\\migrate\\cckfield\\d6\\FileField', get_class($plugin_manager->createInstance($plugin_id, ['core' => 6])));
+    $this->assertSame('d6_file', $plugin_manager->getPluginIdFromFieldType('file', ['core' => 6]));
 
     try {
       // If this test passes, getPluginIdFromFieldType will raise a
       // PluginNotFoundException and we'll never reach fail().
-      $plugin_manager->getPluginIdFromFieldType('filefield', ['core' => 7]);
+      $plugin_manager->getPluginIdFromFieldType('d6_file', ['core' => 7]);
       $this->fail('Expected Drupal\Component\Plugin\Exception\PluginNotFoundException.');
     }
     catch (PluginNotFoundException $e) {
-      $this->assertIdentical($e->getMessage(), "Plugin ID 'filefield' was not found.");
+      $this->assertSame($e->getMessage(), "Plugin ID 'd6_file' was not found.");
     }
 
-    $this->assertIdentical('image', $plugin_manager->getPluginIdFromFieldType('image', ['core' => 7]));
-    $this->assertIdentical('file', $plugin_manager->getPluginIdFromFieldType('file', ['core' => 7]));
-    $this->assertIdentical('d6_file', $plugin_manager->getPluginIdFromFieldType('file', ['core' => 6]));
-
-    $this->assertIdentical('text', $plugin_manager->getPluginIdFromFieldType('text', ['core' => 6]));
-    $this->assertIdentical('text', $plugin_manager->getPluginIdFromFieldType('text', ['core' => 7]));
-
     // Test fallback when no core version is specified.
-    $this->assertIdentical('d6_no_core_version_specified', $plugin_manager->getPluginIdFromFieldType('d6_no_core_version_specified', ['core' => 6]));
+    $this->assertSame('d6_no_core_version_specified', $plugin_manager->getPluginIdFromFieldType('d6_no_core_version_specified', ['core' => 6]));
 
     try {
       // If this test passes, getPluginIdFromFieldType will raise a
@@ -52,7 +44,7 @@ public function testPluginSelection() {
       $this->fail('Expected Drupal\Component\Plugin\Exception\PluginNotFoundException.');
     }
     catch (PluginNotFoundException $e) {
-      $this->assertIdentical($e->getMessage(), "Plugin ID 'd6_no_core_version_specified' was not found.");
+      $this->assertSame($e->getMessage(), "Plugin ID 'd6_no_core_version_specified' was not found.");
     }
   }