diff --git a/core/modules/migrate_drupal/src/Tests/Dump/Drupal6DumpBase.php b/core/modules/migrate_drupal/src/Tests/Dump/DrupalDumpBase.php
similarity index 93%
rename from core/modules/migrate_drupal/src/Tests/Dump/Drupal6DumpBase.php
rename to core/modules/migrate_drupal/src/Tests/Dump/DrupalDumpBase.php
index 6b97f39..6b62d77 100644
--- a/core/modules/migrate_drupal/src/Tests/Dump/Drupal6DumpBase.php
+++ b/core/modules/migrate_drupal/src/Tests/Dump/DrupalDumpBase.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Contains \Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase.
+ * Contains \Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase.
  */
 
 namespace Drupal\migrate_drupal\Tests\Dump;
@@ -12,7 +12,7 @@
 /**
  * Base class for the dump classes.
  */
-class Drupal6DumpBase {
+class DrupalDumpBase {
 
   /**
    * The database connection.
diff --git a/core/modules/migrate_drupal/src/Tests/MigrateFullDrupalTestBase.php b/core/modules/migrate_drupal/src/Tests/MigrateFullDrupalTestBase.php
index 956a4e6..8cab8a5 100644
--- a/core/modules/migrate_drupal/src/Tests/MigrateFullDrupalTestBase.php
+++ b/core/modules/migrate_drupal/src/Tests/MigrateFullDrupalTestBase.php
@@ -9,11 +9,12 @@
 
 use Drupal\migrate\MigrateExecutable;
 use Drupal\simpletest\TestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Test helper for running a complete Drupal migration.
  */
-abstract class MigrateFullDrupalTestBase extends MigrateDrupalTestBase {
+abstract class MigrateFullDrupalTestBase extends MigrateDrupal6TestBase {
 
   /**
    * Get the dump classes required for this migration test.
diff --git a/core/modules/migrate_drupal/src/Tests/Table/Access.php b/core/modules/migrate_drupal/src/Tests/Table/d6/Access.php
similarity index 89%
rename from core/modules/migrate_drupal/src/Tests/Table/Access.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/Access.php
index 5f2ef93..4806137 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/Access.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/Access.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the access table.
  */
-class Access extends Drupal6DumpBase {
+class Access extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("access", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/Actions.php b/core/modules/migrate_drupal/src/Tests/Table/d6/Actions.php
similarity index 96%
rename from core/modules/migrate_drupal/src/Tests/Table/Actions.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/Actions.php
index 3573edf..f4ca80c 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/Actions.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/Actions.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the actions table.
  */
-class Actions extends Drupal6DumpBase {
+class Actions extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("actions", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/ActionsAid.php b/core/modules/migrate_drupal/src/Tests/Table/d6/ActionsAid.php
similarity index 83%
rename from core/modules/migrate_drupal/src/Tests/Table/ActionsAid.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/ActionsAid.php
index 750f1a3..fe8ac79 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/ActionsAid.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/ActionsAid.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the actions_aid table.
  */
-class ActionsAid extends Drupal6DumpBase {
+class ActionsAid extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("actions_aid", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/AggregatorCategory.php b/core/modules/migrate_drupal/src/Tests/Table/d6/AggregatorCategory.php
similarity index 88%
rename from core/modules/migrate_drupal/src/Tests/Table/AggregatorCategory.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/AggregatorCategory.php
index 924885e..8a9bf23 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/AggregatorCategory.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/AggregatorCategory.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the aggregator_category table.
  */
-class AggregatorCategory extends Drupal6DumpBase {
+class AggregatorCategory extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("aggregator_category", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/AggregatorFeed.php b/core/modules/migrate_drupal/src/Tests/Table/d6/AggregatorFeed.php
similarity index 95%
rename from core/modules/migrate_drupal/src/Tests/Table/AggregatorFeed.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/AggregatorFeed.php
index 20d06e5..0df9d0a 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/AggregatorFeed.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/AggregatorFeed.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the aggregator_feed table.
  */
-class AggregatorFeed extends Drupal6DumpBase {
+class AggregatorFeed extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("aggregator_feed", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/AggregatorItem.php b/core/modules/migrate_drupal/src/Tests/Table/d6/AggregatorItem.php
similarity index 93%
rename from core/modules/migrate_drupal/src/Tests/Table/AggregatorItem.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/AggregatorItem.php
index ec8e640..d818fc8 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/AggregatorItem.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/AggregatorItem.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the aggregator_item table.
  */
-class AggregatorItem extends Drupal6DumpBase {
+class AggregatorItem extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("aggregator_item", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/Authmap.php b/core/modules/migrate_drupal/src/Tests/Table/d6/Authmap.php
similarity index 89%
rename from core/modules/migrate_drupal/src/Tests/Table/Authmap.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/Authmap.php
index d9b591b..0c1944b 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/Authmap.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/Authmap.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the authmap table.
  */
-class Authmap extends Drupal6DumpBase {
+class Authmap extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("authmap", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/Batch.php b/core/modules/migrate_drupal/src/Tests/Table/d6/Batch.php
similarity index 88%
rename from core/modules/migrate_drupal/src/Tests/Table/Batch.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/Batch.php
index 8e85e2d..da7cec7 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/Batch.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/Batch.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the batch table.
  */
-class Batch extends Drupal6DumpBase {
+class Batch extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("batch", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/Blocks.php b/core/modules/migrate_drupal/src/Tests/Table/d6/Blocks.php
similarity index 98%
rename from core/modules/migrate_drupal/src/Tests/Table/Blocks.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/Blocks.php
index 634644b..8bc1172 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/Blocks.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/Blocks.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the blocks table.
  */
-class Blocks extends Drupal6DumpBase {
+class Blocks extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("blocks", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/BlocksRoles.php b/core/modules/migrate_drupal/src/Tests/Table/d6/BlocksRoles.php
similarity index 87%
rename from core/modules/migrate_drupal/src/Tests/Table/BlocksRoles.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/BlocksRoles.php
index e69bcb7..468d572 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/BlocksRoles.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/BlocksRoles.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the blocks_roles table.
  */
-class BlocksRoles extends Drupal6DumpBase {
+class BlocksRoles extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("blocks_roles", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/Book.php b/core/modules/migrate_drupal/src/Tests/Table/d6/Book.php
similarity index 91%
rename from core/modules/migrate_drupal/src/Tests/Table/Book.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/Book.php
index 696efc2..cf28c04 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/Book.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/Book.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the book table.
  */
-class Book extends Drupal6DumpBase {
+class Book extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("book", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/Boxes.php b/core/modules/migrate_drupal/src/Tests/Table/d6/Boxes.php
similarity index 91%
rename from core/modules/migrate_drupal/src/Tests/Table/Boxes.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/Boxes.php
index a3fd609..38ffabb 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/Boxes.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/Boxes.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the boxes table.
  */
-class Boxes extends Drupal6DumpBase {
+class Boxes extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("boxes", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/Comments.php b/core/modules/migrate_drupal/src/Tests/Table/d6/Comments.php
similarity index 96%
rename from core/modules/migrate_drupal/src/Tests/Table/Comments.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/Comments.php
index 566ffa6..3c2e9f2 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/Comments.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/Comments.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the comments table.
  */
-class Comments extends Drupal6DumpBase {
+class Comments extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("comments", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/Config.php b/core/modules/migrate_drupal/src/Tests/Table/d6/Config.php
similarity index 89%
rename from core/modules/migrate_drupal/src/Tests/Table/Config.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/Config.php
index 5c3c2ff..3584bbf 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/Config.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/Config.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the config table.
  */
-class Config extends Drupal6DumpBase {
+class Config extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("config", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/Contact.php b/core/modules/migrate_drupal/src/Tests/Table/d6/Contact.php
similarity index 93%
rename from core/modules/migrate_drupal/src/Tests/Table/Contact.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/Contact.php
index b2928a4..590af51 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/Contact.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/Contact.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the contact table.
  */
-class Contact extends Drupal6DumpBase {
+class Contact extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("contact", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/ContentFieldImage.php b/core/modules/migrate_drupal/src/Tests/Table/d6/ContentFieldImage.php
similarity index 93%
rename from core/modules/migrate_drupal/src/Tests/Table/ContentFieldImage.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/ContentFieldImage.php
index b0e756d..b8539ba 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/ContentFieldImage.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/ContentFieldImage.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the content_field_image table.
  */
-class ContentFieldImage extends Drupal6DumpBase {
+class ContentFieldImage extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("content_field_image", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/ContentFieldMultivalue.php b/core/modules/migrate_drupal/src/Tests/Table/d6/ContentFieldMultivalue.php
similarity index 91%
rename from core/modules/migrate_drupal/src/Tests/Table/ContentFieldMultivalue.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/ContentFieldMultivalue.php
index 911398d..0af6c22 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/ContentFieldMultivalue.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/ContentFieldMultivalue.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the content_field_multivalue table.
  */
-class ContentFieldMultivalue extends Drupal6DumpBase {
+class ContentFieldMultivalue extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("content_field_multivalue", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/ContentFieldTest.php b/core/modules/migrate_drupal/src/Tests/Table/d6/ContentFieldTest.php
similarity index 92%
rename from core/modules/migrate_drupal/src/Tests/Table/ContentFieldTest.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/ContentFieldTest.php
index c6d34f2..6271368 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/ContentFieldTest.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/ContentFieldTest.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the content_field_test table.
  */
-class ContentFieldTest extends Drupal6DumpBase {
+class ContentFieldTest extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("content_field_test", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/ContentFieldTestTwo.php b/core/modules/migrate_drupal/src/Tests/Table/d6/ContentFieldTestTwo.php
similarity index 92%
rename from core/modules/migrate_drupal/src/Tests/Table/ContentFieldTestTwo.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/ContentFieldTestTwo.php
index 2889e10..dec08d6 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/ContentFieldTestTwo.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/ContentFieldTestTwo.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the content_field_test_two table.
  */
-class ContentFieldTestTwo extends Drupal6DumpBase {
+class ContentFieldTestTwo extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("content_field_test_two", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/ContentGroup.php b/core/modules/migrate_drupal/src/Tests/Table/d6/ContentGroup.php
similarity index 91%
rename from core/modules/migrate_drupal/src/Tests/Table/ContentGroup.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/ContentGroup.php
index f84ffdc..e404f61 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/ContentGroup.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/ContentGroup.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the content_group table.
  */
-class ContentGroup extends Drupal6DumpBase {
+class ContentGroup extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("content_group", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/ContentGroupFields.php b/core/modules/migrate_drupal/src/Tests/Table/d6/ContentGroupFields.php
similarity index 88%
rename from core/modules/migrate_drupal/src/Tests/Table/ContentGroupFields.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/ContentGroupFields.php
index d4873cb..1ea0f9f 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/ContentGroupFields.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/ContentGroupFields.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the content_group_fields table.
  */
-class ContentGroupFields extends Drupal6DumpBase {
+class ContentGroupFields extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("content_group_fields", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/ContentNodeField.php b/core/modules/migrate_drupal/src/Tests/Table/d6/ContentNodeField.php
similarity index 98%
rename from core/modules/migrate_drupal/src/Tests/Table/ContentNodeField.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/ContentNodeField.php
index cc5608e..ea76345 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/ContentNodeField.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/ContentNodeField.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the content_node_field table.
  */
-class ContentNodeField extends Drupal6DumpBase {
+class ContentNodeField extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("content_node_field", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/ContentNodeFieldInstance.php b/core/modules/migrate_drupal/src/Tests/Table/d6/ContentNodeFieldInstance.php
similarity index 99%
rename from core/modules/migrate_drupal/src/Tests/Table/ContentNodeFieldInstance.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/ContentNodeFieldInstance.php
index b41a9ef..1c0e592 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/ContentNodeFieldInstance.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/ContentNodeFieldInstance.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the content_node_field_instance table.
  */
-class ContentNodeFieldInstance extends Drupal6DumpBase {
+class ContentNodeFieldInstance extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("content_node_field_instance", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/ContentTypePage.php b/core/modules/migrate_drupal/src/Tests/Table/d6/ContentTypePage.php
similarity index 89%
rename from core/modules/migrate_drupal/src/Tests/Table/ContentTypePage.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/ContentTypePage.php
index 0f360be..8b0f5c8 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/ContentTypePage.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/ContentTypePage.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the content_type_page table.
  */
-class ContentTypePage extends Drupal6DumpBase {
+class ContentTypePage extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("content_type_page", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/ContentTypeStory.php b/core/modules/migrate_drupal/src/Tests/Table/d6/ContentTypeStory.php
similarity index 98%
rename from core/modules/migrate_drupal/src/Tests/Table/ContentTypeStory.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/ContentTypeStory.php
index 98faa2a..74c784c 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/ContentTypeStory.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/ContentTypeStory.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the content_type_story table.
  */
-class ContentTypeStory extends Drupal6DumpBase {
+class ContentTypeStory extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("content_type_story", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/ContentTypeTestPage.php b/core/modules/migrate_drupal/src/Tests/Table/d6/ContentTypeTestPage.php
similarity index 89%
rename from core/modules/migrate_drupal/src/Tests/Table/ContentTypeTestPage.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/ContentTypeTestPage.php
index 0242458..f86a57e 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/ContentTypeTestPage.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/ContentTypeTestPage.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the content_type_test_page table.
  */
-class ContentTypeTestPage extends Drupal6DumpBase {
+class ContentTypeTestPage extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("content_type_test_page", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/ContentTypeTestPlanet.php b/core/modules/migrate_drupal/src/Tests/Table/d6/ContentTypeTestPlanet.php
similarity index 90%
rename from core/modules/migrate_drupal/src/Tests/Table/ContentTypeTestPlanet.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/ContentTypeTestPlanet.php
index 55a559f..4a01882 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/ContentTypeTestPlanet.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/ContentTypeTestPlanet.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the content_type_test_planet table.
  */
-class ContentTypeTestPlanet extends Drupal6DumpBase {
+class ContentTypeTestPlanet extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("content_type_test_planet", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/DateFormatLocale.php b/core/modules/migrate_drupal/src/Tests/Table/d6/DateFormatLocale.php
similarity index 87%
rename from core/modules/migrate_drupal/src/Tests/Table/DateFormatLocale.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/DateFormatLocale.php
index a964c6a..af34df7 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/DateFormatLocale.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/DateFormatLocale.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the date_format_locale table.
  */
-class DateFormatLocale extends Drupal6DumpBase {
+class DateFormatLocale extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("date_format_locale", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/DateFormatTypes.php b/core/modules/migrate_drupal/src/Tests/Table/d6/DateFormatTypes.php
similarity index 89%
rename from core/modules/migrate_drupal/src/Tests/Table/DateFormatTypes.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/DateFormatTypes.php
index 3e6c46b..173dac2 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/DateFormatTypes.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/DateFormatTypes.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the date_format_types table.
  */
-class DateFormatTypes extends Drupal6DumpBase {
+class DateFormatTypes extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("date_format_types", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/DateFormats.php b/core/modules/migrate_drupal/src/Tests/Table/d6/DateFormats.php
similarity index 97%
rename from core/modules/migrate_drupal/src/Tests/Table/DateFormats.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/DateFormats.php
index 81e8def..e60336b 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/DateFormats.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/DateFormats.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the date_formats table.
  */
-class DateFormats extends Drupal6DumpBase {
+class DateFormats extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("date_formats", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/Event.php b/core/modules/migrate_drupal/src/Tests/Table/d6/Event.php
similarity index 93%
rename from core/modules/migrate_drupal/src/Tests/Table/Event.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/Event.php
index d33928f..090338e 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/Event.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/Event.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the event table.
  */
-class Event extends Drupal6DumpBase {
+class Event extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("event", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/EventTimezones.php b/core/modules/migrate_drupal/src/Tests/Table/d6/EventTimezones.php
similarity index 99%
rename from core/modules/migrate_drupal/src/Tests/Table/EventTimezones.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/EventTimezones.php
index 1878bbf..9680017 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/EventTimezones.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/EventTimezones.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the event_timezones table.
  */
-class EventTimezones extends Drupal6DumpBase {
+class EventTimezones extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("event_timezones", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/Files.php b/core/modules/migrate_drupal/src/Tests/Table/d6/Files.php
similarity index 96%
rename from core/modules/migrate_drupal/src/Tests/Table/Files.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/Files.php
index f809a25..3b42917 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/Files.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/Files.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the files table.
  */
-class Files extends Drupal6DumpBase {
+class Files extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("files", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/FilterFormats.php b/core/modules/migrate_drupal/src/Tests/Table/d6/FilterFormats.php
similarity index 91%
rename from core/modules/migrate_drupal/src/Tests/Table/FilterFormats.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/FilterFormats.php
index 8f8b11a..38d04f7 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/FilterFormats.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/FilterFormats.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the filter_formats table.
  */
-class FilterFormats extends Drupal6DumpBase {
+class FilterFormats extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("filter_formats", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/Filters.php b/core/modules/migrate_drupal/src/Tests/Table/d6/Filters.php
similarity index 95%
rename from core/modules/migrate_drupal/src/Tests/Table/Filters.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/Filters.php
index a09a871..a93b41d 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/Filters.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/Filters.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the filters table.
  */
-class Filters extends Drupal6DumpBase {
+class Filters extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("filters", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/Flood.php b/core/modules/migrate_drupal/src/Tests/Table/d6/Flood.php
similarity index 89%
rename from core/modules/migrate_drupal/src/Tests/Table/Flood.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/Flood.php
index 6ff2903..f25b591 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/Flood.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/Flood.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the flood table.
  */
-class Flood extends Drupal6DumpBase {
+class Flood extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("flood", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/History.php b/core/modules/migrate_drupal/src/Tests/Table/d6/History.php
similarity index 88%
rename from core/modules/migrate_drupal/src/Tests/Table/History.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/History.php
index f054018..9261e40 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/History.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/History.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the history table.
  */
-class History extends Drupal6DumpBase {
+class History extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("history", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/MenuCustom.php b/core/modules/migrate_drupal/src/Tests/Table/d6/MenuCustom.php
similarity index 93%
rename from core/modules/migrate_drupal/src/Tests/Table/MenuCustom.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/MenuCustom.php
index 932ac4d..661d701 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/MenuCustom.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/MenuCustom.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the menu_custom table.
  */
-class MenuCustom extends Drupal6DumpBase {
+class MenuCustom extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("menu_custom", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/MenuLinks.php b/core/modules/migrate_drupal/src/Tests/Table/d6/MenuLinks.php
similarity index 99%
rename from core/modules/migrate_drupal/src/Tests/Table/MenuLinks.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/MenuLinks.php
index 2fb6ee0..8764063 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/MenuLinks.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/MenuLinks.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the menu_links table.
  */
-class MenuLinks extends Drupal6DumpBase {
+class MenuLinks extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("menu_links", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/Node.php b/core/modules/migrate_drupal/src/Tests/Table/d6/Node.php
similarity index 97%
rename from core/modules/migrate_drupal/src/Tests/Table/Node.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/Node.php
index 4da6aee..068edbd 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/Node.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/Node.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the node table.
  */
-class Node extends Drupal6DumpBase {
+class Node extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("node", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/NodeAccess.php b/core/modules/migrate_drupal/src/Tests/Table/d6/NodeAccess.php
similarity index 93%
rename from core/modules/migrate_drupal/src/Tests/Table/NodeAccess.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/NodeAccess.php
index 753348e..5b231ec 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/NodeAccess.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/NodeAccess.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the node_access table.
  */
-class NodeAccess extends Drupal6DumpBase {
+class NodeAccess extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("node_access", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/NodeCommentStatistics.php b/core/modules/migrate_drupal/src/Tests/Table/d6/NodeCommentStatistics.php
similarity index 92%
rename from core/modules/migrate_drupal/src/Tests/Table/NodeCommentStatistics.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/NodeCommentStatistics.php
index 2f6aa57..df80f70 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/NodeCommentStatistics.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/NodeCommentStatistics.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the node_comment_statistics table.
  */
-class NodeCommentStatistics extends Drupal6DumpBase {
+class NodeCommentStatistics extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("node_comment_statistics", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/NodeCounter.php b/core/modules/migrate_drupal/src/Tests/Table/d6/NodeCounter.php
similarity index 90%
rename from core/modules/migrate_drupal/src/Tests/Table/NodeCounter.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/NodeCounter.php
index 9ad22c2..c5356f7 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/NodeCounter.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/NodeCounter.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the node_counter table.
  */
-class NodeCounter extends Drupal6DumpBase {
+class NodeCounter extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("node_counter", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/NodeRevisions.php b/core/modules/migrate_drupal/src/Tests/Table/d6/NodeRevisions.php
similarity index 97%
rename from core/modules/migrate_drupal/src/Tests/Table/NodeRevisions.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/NodeRevisions.php
index ef5345f..472a182 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/NodeRevisions.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/NodeRevisions.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the node_revisions table.
  */
-class NodeRevisions extends Drupal6DumpBase {
+class NodeRevisions extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("node_revisions", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/NodeType.php b/core/modules/migrate_drupal/src/Tests/Table/d6/NodeType.php
similarity index 98%
rename from core/modules/migrate_drupal/src/Tests/Table/NodeType.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/NodeType.php
index e049273..89884e8 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/NodeType.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/NodeType.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the node_type table.
  */
-class NodeType extends Drupal6DumpBase {
+class NodeType extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("node_type", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/Permission.php b/core/modules/migrate_drupal/src/Tests/Table/d6/Permission.php
similarity index 94%
rename from core/modules/migrate_drupal/src/Tests/Table/Permission.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/Permission.php
index b771262..547e0bf 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/Permission.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/Permission.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the permission table.
  */
-class Permission extends Drupal6DumpBase {
+class Permission extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("permission", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/ProfileFields.php b/core/modules/migrate_drupal/src/Tests/Table/d6/ProfileFields.php
similarity index 97%
rename from core/modules/migrate_drupal/src/Tests/Table/ProfileFields.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/ProfileFields.php
index 56152ef..7ff0a4c 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/ProfileFields.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/ProfileFields.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the profile_fields table.
  */
-class ProfileFields extends Drupal6DumpBase {
+class ProfileFields extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("profile_fields", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/ProfileValues.php b/core/modules/migrate_drupal/src/Tests/Table/d6/ProfileValues.php
similarity index 97%
rename from core/modules/migrate_drupal/src/Tests/Table/ProfileValues.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/ProfileValues.php
index 859d57e..d2085ad 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/ProfileValues.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/ProfileValues.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the profile_values table.
  */
-class ProfileValues extends Drupal6DumpBase {
+class ProfileValues extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("profile_values", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/Role.php b/core/modules/migrate_drupal/src/Tests/Table/d6/Role.php
similarity index 90%
rename from core/modules/migrate_drupal/src/Tests/Table/Role.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/Role.php
index b3c1877..7edfaa6 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/Role.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/Role.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the role table.
  */
-class Role extends Drupal6DumpBase {
+class Role extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("role", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/Semaphore.php b/core/modules/migrate_drupal/src/Tests/Table/d6/Semaphore.php
similarity index 87%
rename from core/modules/migrate_drupal/src/Tests/Table/Semaphore.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/Semaphore.php
index 4c80ef9..308fd67 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/Semaphore.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/Semaphore.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the semaphore table.
  */
-class Semaphore extends Drupal6DumpBase {
+class Semaphore extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("semaphore", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/System.php b/core/modules/migrate_drupal/src/Tests/Table/d6/System.php
similarity index 99%
rename from core/modules/migrate_drupal/src/Tests/Table/System.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/System.php
index 08e638d..ae42df9 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/System.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/System.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the system table.
  */
-class System extends Drupal6DumpBase {
+class System extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("system", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/TermData.php b/core/modules/migrate_drupal/src/Tests/Table/d6/TermData.php
similarity index 94%
rename from core/modules/migrate_drupal/src/Tests/Table/TermData.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/TermData.php
index 106e581..7a8e167 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/TermData.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/TermData.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the term_data table.
  */
-class TermData extends Drupal6DumpBase {
+class TermData extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("term_data", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/TermHierarchy.php b/core/modules/migrate_drupal/src/Tests/Table/d6/TermHierarchy.php
similarity index 90%
rename from core/modules/migrate_drupal/src/Tests/Table/TermHierarchy.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/TermHierarchy.php
index 0ca4f63..b9823e8 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/TermHierarchy.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/TermHierarchy.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the term_hierarchy table.
  */
-class TermHierarchy extends Drupal6DumpBase {
+class TermHierarchy extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("term_hierarchy", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/TermNode.php b/core/modules/migrate_drupal/src/Tests/Table/d6/TermNode.php
similarity index 91%
rename from core/modules/migrate_drupal/src/Tests/Table/TermNode.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/TermNode.php
index d8d1675..e489409 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/TermNode.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/TermNode.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the term_node table.
  */
-class TermNode extends Drupal6DumpBase {
+class TermNode extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("term_node", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/TermRelation.php b/core/modules/migrate_drupal/src/Tests/Table/d6/TermRelation.php
similarity index 88%
rename from core/modules/migrate_drupal/src/Tests/Table/TermRelation.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/TermRelation.php
index 8f7c5e0..decb3ee 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/TermRelation.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/TermRelation.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the term_relation table.
  */
-class TermRelation extends Drupal6DumpBase {
+class TermRelation extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("term_relation", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/TermSynonym.php b/core/modules/migrate_drupal/src/Tests/Table/d6/TermSynonym.php
similarity index 87%
rename from core/modules/migrate_drupal/src/Tests/Table/TermSynonym.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/TermSynonym.php
index cfa58bf..d6eabd4 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/TermSynonym.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/TermSynonym.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the term_synonym table.
  */
-class TermSynonym extends Drupal6DumpBase {
+class TermSynonym extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("term_synonym", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/Upload.php b/core/modules/migrate_drupal/src/Tests/Table/d6/Upload.php
similarity index 94%
rename from core/modules/migrate_drupal/src/Tests/Table/Upload.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/Upload.php
index f7ec4fa..17605e7 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/Upload.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/Upload.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the upload table.
  */
-class Upload extends Drupal6DumpBase {
+class Upload extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("upload", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/UrlAlias.php b/core/modules/migrate_drupal/src/Tests/Table/d6/UrlAlias.php
similarity index 91%
rename from core/modules/migrate_drupal/src/Tests/Table/UrlAlias.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/UrlAlias.php
index 80b8acf..1faf0f0 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/UrlAlias.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/UrlAlias.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the url_alias table.
  */
-class UrlAlias extends Drupal6DumpBase {
+class UrlAlias extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("url_alias", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/Users.php b/core/modules/migrate_drupal/src/Tests/Table/d6/Users.php
similarity index 98%
rename from core/modules/migrate_drupal/src/Tests/Table/Users.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/Users.php
index 87c0028..36f8272 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/Users.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/Users.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the users table.
  */
-class Users extends Drupal6DumpBase {
+class Users extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("users", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/UsersRoles.php b/core/modules/migrate_drupal/src/Tests/Table/d6/UsersRoles.php
similarity index 91%
rename from core/modules/migrate_drupal/src/Tests/Table/UsersRoles.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/UsersRoles.php
index 494749e..cf1e9b1 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/UsersRoles.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/UsersRoles.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the users_roles table.
  */
-class UsersRoles extends Drupal6DumpBase {
+class UsersRoles extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("users_roles", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/Variable.php b/core/modules/migrate_drupal/src/Tests/Table/d6/Variable.php
similarity index 99%
rename from core/modules/migrate_drupal/src/Tests/Table/Variable.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/Variable.php
index b848e70..a376f81 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/Variable.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/Variable.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the variable table.
  */
-class Variable extends Drupal6DumpBase {
+class Variable extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("variable", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/Vocabulary.php b/core/modules/migrate_drupal/src/Tests/Table/d6/Vocabulary.php
similarity index 96%
rename from core/modules/migrate_drupal/src/Tests/Table/Vocabulary.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/Vocabulary.php
index 3936d1c..68b4f1c 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/Vocabulary.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/Vocabulary.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the vocabulary table.
  */
-class Vocabulary extends Drupal6DumpBase {
+class Vocabulary extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("vocabulary", array(
diff --git a/core/modules/migrate_drupal/src/Tests/Table/VocabularyNodeTypes.php b/core/modules/migrate_drupal/src/Tests/Table/d6/VocabularyNodeTypes.php
similarity index 89%
rename from core/modules/migrate_drupal/src/Tests/Table/VocabularyNodeTypes.php
rename to core/modules/migrate_drupal/src/Tests/Table/d6/VocabularyNodeTypes.php
index a52778d..1da665e 100644
--- a/core/modules/migrate_drupal/src/Tests/Table/VocabularyNodeTypes.php
+++ b/core/modules/migrate_drupal/src/Tests/Table/d6/VocabularyNodeTypes.php
@@ -10,14 +10,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the vocabulary_node_types table.
  */
-class VocabularyNodeTypes extends Drupal6DumpBase {
+class VocabularyNodeTypes extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("vocabulary_node_types", array(
diff --git a/core/modules/migrate_drupal/src/Tests/d6.gz b/core/modules/migrate_drupal/src/Tests/d6.gz
index b245ec9..769ef2d 100644
--- a/core/modules/migrate_drupal/src/Tests/d6.gz
+++ b/core/modules/migrate_drupal/src/Tests/d6.gz
@@ -1,4 +1,4 @@
-‹ �Y´T ì½ùsÜÈ‘0úóó_;¾øDí#©¾yÈö³f¤ñh­cv¤Y¯7£»ÁnŒÐ@@“¢'ø¿¿ÊÌ:�ÂÑw“âîX$�BUVÞ•••urâ¼¿ûô_ïœñb6wÚ­Óvßq^i–Cøœ¼÷’À{ýÝ±s'Nœ~…f-çèëùÀôžÿîä„ýçü§Ù¥Æ#/œ²_ö¯½Ìz©éŒÐäd¥ÿƒ/?ùÉ�Ÿ8ìiGÿO°ßýîÅü¾×j·ÚÎ§7Ÿ�¿||÷ÚýþÇW?¿úþó›Ÿ]öÈýþÝÛ7>ÿé/±=vþãÅËÚ~~óé—wŸ?ºàÏËúøøîÝ«Ïo?~`¿}øðæ{øº°<.öðáÕû7ŸœEv}®¿ëªÞ?¿}ÿÆýß�Þ°.åïÅ¶ªÙ³ÿ·Õºlµž©6­vOõ÷Ë‡·ÿõË6ñ7ßÿfjü}ì˜¯[%�üðñç7oÿúÁýÛ›¨žŠ�KÃV	ƒºï?¾†yŠ_�ùðÙ‡�î«_>tÿûÕ;Ãêÿ¾ùù£6Év;××‡�Ÿß|â�áïÔ=& 8Wö†¡ï0qXŒ²Eâ£døìŸÞhä§é?¡áï^ÿüñ'çó«ïÞ½qÞþà¼ùŸ·ŸKˆù¥Þ�?vG©;
+‹ ŒÅT ì½ùsÜÈ‘0úóó_;¾øDí#©¾yÈö³f¤ñh­cv¤Y¯7£»ÁnŒÐ@@“¢'ø¿¿ÊÌ:�ÂÑw“âîX$�BUVÞ•••urâ¼¿ûô_ïœñb6wÚ­Óvßq^i–Cøœ¼÷’À{ýÝ±s'Nœ~…f-çèëùÀôžÿîä„ýçü§Ù¥Æ#/œ²_ö¯½Ìz©éŒÐäd¥ÿƒ/?ùÉ�Ÿ8ìiGÿO°ßýîÅü¾×j·ÚÎ§7Ÿ�¿||÷ÚýþÇW?¿úþó›Ÿ]öÈýþÝÛ7>ÿé/±=vþãÅËÚ~~óé—wŸ?ºàÏËúøøîÝ«Ïo?~`¿}øðæ{øº°<.öðáÕû7ŸœEv}®¿ëªÞ?¿}ÿÆýß�Þ°.åïÅ¶ªÙ³ÿ·Õºlµž©6­vOõ÷Ë‡·ÿõË6ñ7ßÿfjü}ì˜¯[%�üðñç7oÿúÁýÛ›¨žŠ�KÃV	ƒºï?¾†yŠ_�ùðÙ‡�î«_>tÿûÕ;Ãêÿ¾ùù£6Év;××‡�Ÿß|â�áïÔ=& 8Wö†¡ï0qXŒ²Eâ£døìŸÞhä§é?¡áï^ÿüñ'çó«ïÞ½qÞþà¼ùŸ·ŸKˆù¥Þ�?vG©;
 ?BIqþäüå/£©—x£ÌOÜÔÏÄËB¬­þ¤ØäûŸß¼úü†#@pŽ~ç°?‚ñ?� ÊŽÚíç›¬óá—wïDÝÛì»÷LŽ¡áÌK¿üÓ¹ñì¨ÓïkÍ_¿ùáãxçÙ3lšÝÍý†MÓÌË–,ˆî Šž­iÛþôóÛ÷¯~þ‡ÃxÃ9B¸Ÿÿî¹óæÃ_ß2.~Eñëïä' �14ÃU�Á_3=DgÌtWµß}üþo„`Edçï?¿ýüFD«å¼zÇTDž¯ß~Âl^šÊ(mþæƒÙú—ÚÐÍx4cú²†I©É~¹”`ÐØ´†£Z6îëvÊ™�™¥pè�š²õœ�?óü¨0Ž&™ÿ5“�±ÅØOGI0ÀB{ˆL­±GŽ«9EjØš·*ðõÛŸÞüüÙyûáóG­*èOÎÑ³Q<›1ÝùbéÔ¥ÏŽÅõ[±	ûï'zæˆÖÏ�U—‹¨A§–Fì¿_ÄS£ã(ûîÌûâ»iŒ¾Ü©OàÿaoÀþ{Ïž;spˆèe®ËETÛi±‰Ñ­x­:ž'ñ,Î|{—…—€NzFýe±s�ÄŒæÞÄ×:ÍãËè´‚FÐ©ê˜ÔÞ‡ù†ý÷‰=È}ÍÈV57ËkößÏþ,æ=ÁÌfÖéY"×s%¿H0)“Ë!ó‚¿¸Á\5†Çü‡å-ûï;/rÞþäxãqÂ4¿_;£E’€ã§¹®ñ×ŠÎÍ÷Ð=<ÎuY+Ô›²>.¨ºz„ÍÀ
 !y‡©õ-˜Dþ¸Ês:X¯h`Só4å&ªžZ6vc´oÖç¦É$ñ'^'îÈËüIœÜUr•¥ù^¹ËqÙ¨©[žYØÔÙ6Ü»ƒºbwà}�iAˆOlGü—½³}³˜ìo£IµØ¾h*¶o7)×¾_­hsMD…ë¢à|ÿñ=þd~K0ó’;çoþÝ¥óKükÁ0Ã:sÞ¾>}¶ŒÄ¨.?Ã`~³)õÅ;Z$á2Ýüòó;p¤r�$þ5³îSË5yS�üß2H2?‚®FSŸYp {äßÒ,ƒÌŸ¥Ç¬3'õGq4Nù0ØÔ·!Ò:Ì;¼¾`Æqwë¥ïAÇGbo–¿bc¶˜ŸÍù€a5XWiHfha,à�[˜²ÞuŒ¿ïÛOÉWƒ‡ÿ7Ì^Âÿw’½tüÐÏf�ÃnµÆ«ýÙ³ÔÑ¾¶ ½¯�ƒñäÄ¯„àUä`#'ñçŒ!X7 ÂrÝø™7Y©oX/ÙÓ
 çÇÏŸb}§sf|}gê{c?9¯�(zã…Ó—0æÈc¤æÎâqp4ç›¿O}5wd›8ItƒìâÙ¦™åQC}XÌ†~L‚œò0ÒyèÝéø2bÏ§£um3Z(ÕGøcyƒfj¥?¬NÌáOÏ>1ULÅ Å	‘�&Ã;œ‚Òˆ§Ïvb•¹(3Š¤™›Dj]
@@ -744,4 +744,4 @@ Qu^v[5x)
 ïöšªø+�¢|ACb9¦Iµ¼Bûàþ#´m¹Œ„w:c)�
 PÞ&ÚTGù@æxÈÕ»™7šÉqi¦òÕÎ: èï´Ì)–™|@¾÷Ü8/é€Š B¹vWsc–EæëVÌ—j«ô>eœ•ÕŽ.¯BëXŠ#Vh€%1+4H-”¶žóÒØõ~h2ùZMÚ˜	!®d€?±<D9*­ZŠ˜ÅhFÎâ¨5´Ü¥•BÛ‚"V1Zƒ¹Ö[‰0Û{;Wh~Œßô}F9IùûôÖ û5_2­â‹æñ‚©‰’#¹•äÄ…-®‡š×Z'V/ßQÓ„à]5ZäÀ˜Õ¼6½À×áÀé-ªäË•‹Z±«�Ö&Ï‘‚zk:—©r„!rÈ�SA!žÁÄ¯˜aÞI«hÚ+¹« EYkF®â¶•š"›§¿Þ&t|>�Í]“Øó›‹Š–8U¦ªQNö™™&±TF†
 —ÇžaÌTZ#k+¯[òºf3·6wN2š�Ãi‘þK˜/©ò²¤åwUóÇ-«Ä)^Qd33î;wàh_MNx-9¤Žó b>“ÃžÒ*¸©˜ý\„.ù`¬×Naú#zEã¡0NjÄKDH÷ºÁŸïÒùõ�ÞÜt}é diHY%u…FD�ULš§
-”h0ÿæ~óÕÉÛcûÏsF§ÏO�lyK™"Ïå¯§öÛó#)î´™m„{u~q|òúÌfõÛ/ß¿üå’J¬?_/Ka¼SÅR�ÖUøyø’ÑÁfwöËÓèo°`Ö›²òÇ—LH.³ðWÎOO¯NÎÏì—çggÇ/á’#Èx£•7]™À_*Ââ­�32H•�[1QœÕ4;ûMsßlFïyËzn¾ûÿéÿ‚y:†! 
\ No newline at end of file
+”h0ÿæ~óÕÉÛcûÏsF§ÏO�lyK™"Ïå¯§öÛó#)î´™m„{u~q|òúÌfõÛ/ß¿üå’J¬?_/Ka¼SÅR�ÖUøyø’ÑÁfwöËÓèo°`Ö›²òÇ—LH.³ðWÎOO¯NÎÏì—çggÇ/á’#Èx£•7]™À_*Ââ­�32H•�[1QœÕ4;ûMsßêFÿy«ûÜê~÷ÿ¡—5Ö:†! 
\ No newline at end of file
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateActionConfigsTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateActionConfigsTest.php
index 843033f..aa75355 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateActionConfigsTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateActionConfigsTest.php
@@ -9,14 +9,14 @@
 
 use Drupal\config\Tests\SchemaCheckTestTrait;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Upgrade variables to action.settings.yml.
  *
  * @group migrate_drupal
  */
-class MigrateActionConfigsTest extends MigrateDrupalTestBase {
+class MigrateActionConfigsTest extends MigrateDrupal6TestBase {
 
   use SchemaCheckTestTrait;
 
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateAggregatorConfigsTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateAggregatorConfigsTest.php
index cff9377..95c4224 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateAggregatorConfigsTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateAggregatorConfigsTest.php
@@ -9,14 +9,14 @@
 
 use Drupal\config\Tests\SchemaCheckTestTrait;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Upgrade variables to aggregator.settings.yml.
  *
  * @group migrate_drupal
  */
-class MigrateAggregatorConfigsTest extends MigrateDrupalTestBase {
+class MigrateAggregatorConfigsTest extends MigrateDrupal6TestBase {
 
   use SchemaCheckTestTrait;
 
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateAggregatorFeedTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateAggregatorFeedTest.php
index 214b0e8..9978263 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateAggregatorFeedTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateAggregatorFeedTest.php
@@ -9,14 +9,14 @@
 
 use Drupal\aggregator\Entity\Feed;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Upgrade variables to aggregator_feed entities.
  *
  * @group migrate_drupal
  */
-class MigrateAggregatorFeedTest extends MigrateDrupalTestBase {
+class MigrateAggregatorFeedTest extends MigrateDrupal6TestBase {
 
   static $modules = array('aggregator');
 
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateAggregatorItemTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateAggregatorItemTest.php
index 672711c..06cb890 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateAggregatorItemTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateAggregatorItemTest.php
@@ -10,14 +10,14 @@
 use Drupal\aggregator\Entity\Item;
 use Drupal\Core\Language\LanguageInterface;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Upgrade aggregator items.
  *
  * @group migrate_drupal
  */
-class MigrateAggregatorItemTest extends MigrateDrupalTestBase {
+class MigrateAggregatorItemTest extends MigrateDrupal6TestBase {
 
   static $modules = array('aggregator');
 
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateBlockContentTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateBlockContentTest.php
index f44346e..f065d16 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateBlockContentTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateBlockContentTest.php
@@ -12,14 +12,14 @@
 use Drupal\Core\Language\LanguageInterface;
 use Drupal\field\Entity\FieldStorageConfig;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Upgrade custom blocks.
  *
  * @group migrate_drupal
  */
-class MigrateBlockContentTest extends MigrateDrupalTestBase {
+class MigrateBlockContentTest extends MigrateDrupal6TestBase {
 
   static $modules = array('block', 'block_content');
 
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateBlockTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateBlockTest.php
index abd0d69..24e73f4 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateBlockTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateBlockTest.php
@@ -8,7 +8,7 @@
 namespace Drupal\migrate_drupal\Tests\d6;
 
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 use Drupal\block\Entity\Block;
 
 /**
@@ -16,7 +16,7 @@
  *
  * @group migrate_drupal
  */
-class MigrateBlockTest extends MigrateDrupalTestBase {
+class MigrateBlockTest extends MigrateDrupal6TestBase {
 
   /**
    * Modules to enable.
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateBookConfigsTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateBookConfigsTest.php
index c33b1f0..1a7381c 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateBookConfigsTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateBookConfigsTest.php
@@ -10,14 +10,14 @@
 use Drupal\config\Tests\SchemaCheckTestTrait;
 use Drupal\migrate\MigrateMessage;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Upgrade variables to book.settings.yml.
  *
  * @group migrate_drupal
  */
-class MigrateBookConfigsTest extends MigrateDrupalTestBase {
+class MigrateBookConfigsTest extends MigrateDrupal6TestBase {
 
   use SchemaCheckTestTrait;
 
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateBookTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateBookTest.php
index fe55e14..f43366b 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateBookTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateBookTest.php
@@ -8,7 +8,7 @@
 namespace Drupal\migrate_drupal\Tests\d6;
 
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 use Drupal\node\Entity\Node;
 
 /**
@@ -16,7 +16,7 @@
  *
  * @group migrate_drupal
  */
-class MigrateBookTest extends MigrateDrupalTestBase {
+class MigrateBookTest extends MigrateDrupal6TestBase {
 
   public static $modules = array('book');
 
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateCommentTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateCommentTest.php
index c1e9273..4b97a7b 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateCommentTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateCommentTest.php
@@ -10,14 +10,14 @@
 use Drupal\comment\Entity\Comment;
 use Drupal\Core\Language\LanguageInterface;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Upgrade comments.
  *
  * @group migrate_drupal
  */
-class MigrateCommentTest extends MigrateDrupalTestBase {
+class MigrateCommentTest extends MigrateDrupal6TestBase {
 
   static $modules = array('node', 'comment');
 
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateCommentTypeTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateCommentTypeTest.php
index 45da40b..aad88cf 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateCommentTypeTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateCommentTypeTest.php
@@ -8,14 +8,14 @@
 namespace Drupal\migrate_drupal\Tests\d6;
 
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Upgrade comment type.
  *
  * @group migrate_drupal
  */
-class MigrateCommentTypeTest extends MigrateDrupalTestBase {
+class MigrateCommentTypeTest extends MigrateDrupal6TestBase {
 
   static $modules = array('node', 'comment');
 
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateCommentVariableDisplayBase.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateCommentVariableDisplayBase.php
index 46b4a3c..cafd55d 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateCommentVariableDisplayBase.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateCommentVariableDisplayBase.php
@@ -8,12 +8,12 @@
 namespace Drupal\migrate_drupal\Tests\d6;
 
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Base class for Drupal 6 comment variables to Drupal 8 entity display tests.
  */
-abstract class MigrateCommentVariableDisplayBase extends MigrateDrupalTestBase {
+abstract class MigrateCommentVariableDisplayBase extends MigrateDrupal6TestBase {
 
   /**
    * The ID of migration to run.
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateCommentVariableEntityFormDisplaySubjectTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateCommentVariableEntityFormDisplaySubjectTest.php
index 8d6f970..5546a53 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateCommentVariableEntityFormDisplaySubjectTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateCommentVariableEntityFormDisplaySubjectTest.php
@@ -8,14 +8,14 @@
 namespace Drupal\migrate_drupal\Tests\d6;
 
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Upgrade comment subject variable to core.entity_form_display.comment.*.default.yml
  *
  * @group migrate_drupal
  */
-class MigrateCommentVariableEntityFormDisplaySubjectTest extends MigrateDrupalTestBase {
+class MigrateCommentVariableEntityFormDisplaySubjectTest extends MigrateDrupal6TestBase {
 
   /**
    * Modules to enable.
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateCommentVariableFieldTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateCommentVariableFieldTest.php
index 8a9b30b..0267dd4 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateCommentVariableFieldTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateCommentVariableFieldTest.php
@@ -9,14 +9,14 @@
 
 use Drupal\field\Entity\FieldStorageConfig;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Upgrade comment variables to field.storage.node.comment.yml.
  *
  * @group migrate_drupal
  */
-class MigrateCommentVariableFieldTest extends MigrateDrupalTestBase {
+class MigrateCommentVariableFieldTest extends MigrateDrupal6TestBase {
 
   static $modules = array('comment', 'node');
 
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateCommentVariableInstanceTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateCommentVariableInstanceTest.php
index 9ca6577..f94283e 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateCommentVariableInstanceTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateCommentVariableInstanceTest.php
@@ -8,14 +8,14 @@
 namespace Drupal\migrate_drupal\Tests\d6;
 
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Upgrade comment variables to field.instance.node.*.comment.yml.
  *
  * @group migrate_drupal
  */
-class MigrateCommentVariableInstanceTest extends MigrateDrupalTestBase {
+class MigrateCommentVariableInstanceTest extends MigrateDrupal6TestBase {
 
   static $modules = array('comment', 'node');
 
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateContactCategoryTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateContactCategoryTest.php
index 3d690d9..44492cd 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateContactCategoryTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateContactCategoryTest.php
@@ -10,14 +10,14 @@
 use Drupal\contact\Entity\ContactForm;
 use Drupal\migrate\MigrateExecutable;
 use Drupal\migrate\MigrateMessage;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Migrate contact categories to contact.form.*.yml.
  *
  * @group migrate_drupal
  */
-class MigrateContactCategoryTest extends MigrateDrupalTestBase {
+class MigrateContactCategoryTest extends MigrateDrupal6TestBase {
 
   /**
    * Modules to enable.
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateContactConfigsTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateContactConfigsTest.php
index e856b76..94ebdec 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateContactConfigsTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateContactConfigsTest.php
@@ -10,14 +10,14 @@
 use Drupal\config\Tests\SchemaCheckTestTrait;
 use Drupal\migrate\MigrateMessage;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Upgrade variables to contact.settings.yml.
  *
  * @group migrate_drupal
  */
-class MigrateContactConfigsTest extends MigrateDrupalTestBase {
+class MigrateContactConfigsTest extends MigrateDrupal6TestBase {
 
   use SchemaCheckTestTrait;
 
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateDateFormatTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateDateFormatTest.php
index b1c967e..f179352 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateDateFormatTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateDateFormatTest.php
@@ -5,7 +5,7 @@
 use Drupal\Core\Datetime\DrupalDateTime;
 use Drupal\migrate\MigrateMessage;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 use Drupal\Core\Database\Database;
 
 /**
@@ -13,7 +13,7 @@
  *
  * @group migrate_drupal
  */
-class MigrateDateFormatTest extends MigrateDrupalTestBase {
+class MigrateDateFormatTest extends MigrateDrupal6TestBase {
 
   /**
    * {@inheritdoc}
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateDblogConfigsTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateDblogConfigsTest.php
index 2f9c644..1395889 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateDblogConfigsTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateDblogConfigsTest.php
@@ -10,14 +10,14 @@
 use Drupal\config\Tests\SchemaCheckTestTrait;
 use Drupal\migrate\MigrateMessage;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Upgrade variables to dblog.settings.yml.
  *
  * @group migrate_drupal
  */
-class MigrateDblogConfigsTest extends MigrateDrupalTestBase {
+class MigrateDblogConfigsTest extends MigrateDrupal6TestBase {
 
   use SchemaCheckTestTrait;
 
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateDrupal6TestBase.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateDrupal6TestBase.php
new file mode 100644
index 0000000..7dffa29
--- /dev/null
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateDrupal6TestBase.php
@@ -0,0 +1,25 @@
+<?php
+
+
+/**
+ * @file
+ * Contains \Drupal\migrate_drupal\Tests\MigrateDrupal6TestBase.
+ */
+
+namespace Drupal\migrate_drupal\Tests\d6;
+
+use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+
+/**
+ * Base class for Drupal 6 migration tests.
+ */
+abstract class MigrateDrupal6TestBase extends MigrateDrupalTestBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getDumpDirectory() {
+    return parent::getDumpDirectory() . '/d6';
+  }
+
+}
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateFieldFormatterSettingsTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateFieldFormatterSettingsTest.php
index 99520a3..be484cf 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateFieldFormatterSettingsTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateFieldFormatterSettingsTest.php
@@ -9,14 +9,14 @@
 
 use Drupal\Core\Entity\Entity\EntityViewMode;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Upgrade field formatter settings to entity.display.*.*.yml.
  *
  * @group migrate_drupal
  */
-class MigrateFieldFormatterSettingsTest extends MigrateDrupalTestBase {
+class MigrateFieldFormatterSettingsTest extends MigrateDrupal6TestBase {
 
   /**
    * Modules to enable.
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateFieldInstanceTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateFieldInstanceTest.php
index dc4d2c8..74efe60 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateFieldInstanceTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateFieldInstanceTest.php
@@ -9,7 +9,7 @@
 
 use Drupal\field\Entity\FieldConfig;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 use Drupal\link\LinkItemInterface;
 
 /**
@@ -17,7 +17,7 @@
  *
  * @group migrate_drupal
  */
-class MigrateFieldInstanceTest extends MigrateDrupalTestBase {
+class MigrateFieldInstanceTest extends MigrateDrupal6TestBase {
 
   /**
    * Modules to enable.
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateFieldTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateFieldTest.php
index d2ca2ad..9bec637 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateFieldTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateFieldTest.php
@@ -9,14 +9,14 @@
 
 use Drupal\field\Entity\FieldStorageConfig;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Migrate fields.
  *
  * @group migrate_drupal
  */
-class MigrateFieldTest extends MigrateDrupalTestBase {
+class MigrateFieldTest extends MigrateDrupal6TestBase {
 
   /**
    * Modules to enable.
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateFieldWidgetSettingsTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateFieldWidgetSettingsTest.php
index d9346b3..a57858d 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateFieldWidgetSettingsTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateFieldWidgetSettingsTest.php
@@ -8,14 +8,14 @@
 namespace Drupal\migrate_drupal\Tests\d6;
 
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Migrate field widget settings.
  *
  * @group migrate_drupal
  */
-class MigrateFieldWidgetSettingsTest extends MigrateDrupalTestBase {
+class MigrateFieldWidgetSettingsTest extends MigrateDrupal6TestBase {
 
   /**
    * Modules to enable.
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateFileConfigsTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateFileConfigsTest.php
index 343af9c..04fa228 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateFileConfigsTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateFileConfigsTest.php
@@ -10,14 +10,14 @@
 use Drupal\config\Tests\SchemaCheckTestTrait;
 use Drupal\migrate\MigrateMessage;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Upgrade variables to file.settings.yml.
  *
  * @group migrate_drupal
  */
-class MigrateFileConfigsTest extends MigrateDrupalTestBase {
+class MigrateFileConfigsTest extends MigrateDrupal6TestBase {
 
   use SchemaCheckTestTrait;
 
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateFileTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateFileTest.php
index 9799c5c..abc23ec 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateFileTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateFileTest.php
@@ -8,7 +8,7 @@
 namespace Drupal\migrate_drupal\Tests\d6;
 
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 use Drupal\Core\Database\Database;
 
 /**
@@ -16,7 +16,7 @@
  *
  * @group migrate_drupal
  */
-class MigrateFileTest extends MigrateDrupalTestBase {
+class MigrateFileTest extends MigrateDrupal6TestBase {
 
   /**
    * Modules to enable.
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateFilterFormatTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateFilterFormatTest.php
index c6e0416..2ec3bc5 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateFilterFormatTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateFilterFormatTest.php
@@ -8,14 +8,14 @@
 namespace Drupal\migrate_drupal\Tests\d6;
 
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Upgrade variables to filter.formats.*.yml.
  *
  * @group migrate_drupal
  */
-class MigrateFilterFormatTest extends MigrateDrupalTestBase {
+class MigrateFilterFormatTest extends MigrateDrupal6TestBase {
 
   /**
    * {@inheritdoc}
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateForumConfigsTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateForumConfigsTest.php
index 7ca3170..fc815ad 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateForumConfigsTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateForumConfigsTest.php
@@ -9,14 +9,14 @@
 
 use Drupal\config\Tests\SchemaCheckTestTrait;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Upgrade variables to forum.settings.yml.
  *
  * @group migrate_drupal
  */
-class MigrateForumConfigsTest extends MigrateDrupalTestBase {
+class MigrateForumConfigsTest extends MigrateDrupal6TestBase {
 
   use SchemaCheckTestTrait;
 
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateLocaleConfigsTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateLocaleConfigsTest.php
index 270cda9..553499e 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateLocaleConfigsTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateLocaleConfigsTest.php
@@ -9,14 +9,14 @@
 
 use Drupal\config\Tests\SchemaCheckTestTrait;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Upgrade variables to locale.settings.yml.
  *
  * @group migrate_drupal
  */
-class MigrateLocaleConfigsTest extends MigrateDrupalTestBase {
+class MigrateLocaleConfigsTest extends MigrateDrupal6TestBase {
 
   use SchemaCheckTestTrait;
 
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateMenuConfigsTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateMenuConfigsTest.php
index ce874b3..85da906 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateMenuConfigsTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateMenuConfigsTest.php
@@ -9,14 +9,14 @@
 
 use Drupal\config\Tests\SchemaCheckTestTrait;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Upgrade variables to menu_ui.settings.yml.
  *
  * @group migrate_drupal
  */
-class MigrateMenuConfigsTest extends MigrateDrupalTestBase {
+class MigrateMenuConfigsTest extends MigrateDrupal6TestBase {
 
   use SchemaCheckTestTrait;
 
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateMenuLinkTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateMenuLinkTest.php
index 3be32cf..2b79568 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateMenuLinkTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateMenuLinkTest.php
@@ -8,14 +8,14 @@
 namespace Drupal\migrate_drupal\Tests\d6;
 
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Menu link migration.
  *
  * @group migrate_drupal
  */
-class MigrateMenuLinkTest extends MigrateDrupalTestBase {
+class MigrateMenuLinkTest extends MigrateDrupal6TestBase {
 
   /**
    * Modules to enable.
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateMenuTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateMenuTest.php
index fc89648..ceaa1ed 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateMenuTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateMenuTest.php
@@ -9,7 +9,7 @@
 
 use Drupal\migrate\MigrateExecutable;
 use Drupal\migrate\MigrateMessage;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 use Drupal\Core\Database\Database;
 use Drupal\system\Entity\Menu;
 
@@ -18,7 +18,7 @@
  *
  * @group migrate_drupal
  */
-class MigrateMenuTest extends MigrateDrupalTestBase {
+class MigrateMenuTest extends MigrateDrupal6TestBase {
 
   /**
    * {@inheritdoc}
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateNodeBundleSettingsTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateNodeBundleSettingsTest.php
index 38ceca1..dba5a24 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateNodeBundleSettingsTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateNodeBundleSettingsTest.php
@@ -8,14 +8,14 @@
 namespace Drupal\migrate_drupal\Tests\d6;
 
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Test migrating node settings into the base_field_bundle_override config entity.
  *
  * @group migrate_drupal
  */
-class MigrateNodeBundleSettingsTest extends MigrateDrupalTestBase {
+class MigrateNodeBundleSettingsTest extends MigrateDrupal6TestBase {
 
   /**
    * Modules to enable.
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateNodeConfigsTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateNodeConfigsTest.php
index f8daaae..5f6f73f 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateNodeConfigsTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateNodeConfigsTest.php
@@ -10,14 +10,14 @@
 use Drupal\config\Tests\SchemaCheckTestTrait;
 use Drupal\migrate\MigrateMessage;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Upgrade variables to node.settings.yml.
  *
  * @group migrate_drupal
  */
-class MigrateNodeConfigsTest extends MigrateDrupalTestBase {
+class MigrateNodeConfigsTest extends MigrateDrupal6TestBase {
 
   use SchemaCheckTestTrait;
 
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateNodeTestBase.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateNodeTestBase.php
index 20343a6..481c72c 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateNodeTestBase.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateNodeTestBase.php
@@ -7,13 +7,13 @@
 
 namespace Drupal\migrate_drupal\Tests\d6;
 
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 use Drupal\migrate\Entity\MigrationInterface;
 
 /**
  * Base class for Node migration tests.
  */
-abstract class MigrateNodeTestBase extends MigrateDrupalTestBase {
+abstract class MigrateNodeTestBase extends MigrateDrupal6TestBase {
 
   static $modules = array('node');
 
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateNodeTypeTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateNodeTypeTest.php
index 809bc4f..2eadfa6 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateNodeTypeTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateNodeTypeTest.php
@@ -9,14 +9,14 @@
 
 use Drupal\field\Entity\FieldConfig;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Upgrade node types to node.type.*.yml.
  *
  * @group migrate_drupal
  */
-class MigrateNodeTypeTest extends MigrateDrupalTestBase {
+class MigrateNodeTypeTest extends MigrateDrupal6TestBase {
 
   /**
    * Modules to enable.
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateSearchConfigsTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateSearchConfigsTest.php
index f87c013..4af095d 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateSearchConfigsTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateSearchConfigsTest.php
@@ -10,14 +10,14 @@
 use Drupal\config\Tests\SchemaCheckTestTrait;
 use Drupal\migrate\MigrateMessage;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Upgrade variables to search.settings.yml.
  *
  * @group migrate_drupal
  */
-class MigrateSearchConfigsTest extends MigrateDrupalTestBase {
+class MigrateSearchConfigsTest extends MigrateDrupal6TestBase {
 
   use SchemaCheckTestTrait;
 
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateSearchPageTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateSearchPageTest.php
index c17876b..4d453af 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateSearchPageTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateSearchPageTest.php
@@ -8,7 +8,7 @@
 namespace Drupal\migrate_drupal\Tests\d6;
 
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 use Drupal\Core\Database\Database;
 
 /**
@@ -16,7 +16,7 @@
  *
  * @group migrate_drupal
  */
-class MigrateSearchPageTest extends MigrateDrupalTestBase {
+class MigrateSearchPageTest extends MigrateDrupal6TestBase {
 
   /**
    * The modules to be enabled during the test.
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateSimpletestConfigsTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateSimpletestConfigsTest.php
index 9ea4597..458fd73 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateSimpletestConfigsTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateSimpletestConfigsTest.php
@@ -10,14 +10,14 @@
 use Drupal\config\Tests\SchemaCheckTestTrait;
 use Drupal\migrate\MigrateMessage;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Upgrade variables to simpletest.settings.yml.
  *
  * @group migrate_drupal
  */
-class MigrateSimpletestConfigsTest extends MigrateDrupalTestBase {
+class MigrateSimpletestConfigsTest extends MigrateDrupal6TestBase {
 
   use SchemaCheckTestTrait;
 
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateStatisticsConfigsTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateStatisticsConfigsTest.php
index f35d1a0..f47a550 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateStatisticsConfigsTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateStatisticsConfigsTest.php
@@ -10,14 +10,14 @@
 use Drupal\config\Tests\SchemaCheckTestTrait;
 use Drupal\migrate\MigrateMessage;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Upgrade variables to statistics.settings.yml.
  *
  * @group migrate_drupal
  */
-class MigrateStatisticsConfigsTest extends MigrateDrupalTestBase {
+class MigrateStatisticsConfigsTest extends MigrateDrupal6TestBase {
 
   use SchemaCheckTestTrait;
 
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateSyslogConfigsTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateSyslogConfigsTest.php
index fa9ed90..e5332f7 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateSyslogConfigsTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateSyslogConfigsTest.php
@@ -9,14 +9,14 @@
 
 use Drupal\config\Tests\SchemaCheckTestTrait;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Upgrade variables to syslog.settings.yml.
  *
  * @group migrate_drupal
  */
-class MigrateSyslogConfigsTest extends MigrateDrupalTestBase {
+class MigrateSyslogConfigsTest extends MigrateDrupal6TestBase {
 
   use SchemaCheckTestTrait;
 
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateSystemCronTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateSystemCronTest.php
index 8783659..9542122 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateSystemCronTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateSystemCronTest.php
@@ -9,14 +9,14 @@
 
 use Drupal\migrate\MigrateMessage;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Upgrade cron variable to system.*.yml.
  *
  * @group migrate_drupal
  */
-class MigrateSystemCronTest extends MigrateDrupalTestBase {
+class MigrateSystemCronTest extends MigrateDrupal6TestBase {
 
   /**
    * {@inheritdoc}
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateSystemFileTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateSystemFileTest.php
index 80c6a52..af32c44 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateSystemFileTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateSystemFileTest.php
@@ -9,14 +9,14 @@
 
 use Drupal\migrate\MigrateMessage;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Upgrade variables to system.*.yml.
  *
  * @group migrate_drupal
  */
-class MigrateSystemFileTest extends MigrateDrupalTestBase {
+class MigrateSystemFileTest extends MigrateDrupal6TestBase {
 
   /**
    * {@inheritdoc}
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateSystemFilterTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateSystemFilterTest.php
index 110c872..8005594 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateSystemFilterTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateSystemFilterTest.php
@@ -9,14 +9,14 @@
 
 use Drupal\migrate\MigrateMessage;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Upgrade filter variables to system.*.yml.
  *
  * @group migrate_drupal
  */
-class MigrateSystemFilterTest extends MigrateDrupalTestBase {
+class MigrateSystemFilterTest extends MigrateDrupal6TestBase {
 
   /**
    * {@inheritdoc}
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateSystemImageGdTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateSystemImageGdTest.php
index 6cccd84..ed78fde 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateSystemImageGdTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateSystemImageGdTest.php
@@ -9,14 +9,14 @@
 
 use Drupal\migrate\MigrateMessage;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Upgrade image gd variables to system.*.yml.
  *
  * @group migrate_drupal
  */
-class MigrateSystemImageGdTest extends MigrateDrupalTestBase {
+class MigrateSystemImageGdTest extends MigrateDrupal6TestBase {
 
   /**
    * {@inheritdoc}
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateSystemImageTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateSystemImageTest.php
index 5479c1b..b9ebc02 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateSystemImageTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateSystemImageTest.php
@@ -9,14 +9,14 @@
 
 use Drupal\migrate\MigrateMessage;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Upgrade image variables to system.*.yml.
  *
  * @group migrate_drupal
  */
-class MigrateSystemImageTest extends MigrateDrupalTestBase {
+class MigrateSystemImageTest extends MigrateDrupal6TestBase {
 
   /**
    * {@inheritdoc}
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateSystemLoggingTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateSystemLoggingTest.php
index 7f275d8..cd0e3e0 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateSystemLoggingTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateSystemLoggingTest.php
@@ -9,14 +9,14 @@
 
 use Drupal\migrate\MigrateExecutable;
 use Drupal\config\Tests\SchemaCheckTestTrait;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Upgrade error_level variable to system.logging.yml.
  *
  * @group migrate_drupal
  */
-class MigrateSystemLoggingTest extends MigrateDrupalTestBase {
+class MigrateSystemLoggingTest extends MigrateDrupal6TestBase {
 
   use SchemaCheckTestTrait;
 
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateSystemMaintenanceTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateSystemMaintenanceTest.php
index 3617929..935db27 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateSystemMaintenanceTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateSystemMaintenanceTest.php
@@ -9,14 +9,14 @@
 
 use Drupal\migrate\MigrateMessage;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Upgrade maintenance variables to system.*.yml.
  *
  * @group migrate_drupal
  */
-class MigrateSystemMaintenanceTest extends MigrateDrupalTestBase {
+class MigrateSystemMaintenanceTest extends MigrateDrupal6TestBase {
 
   /**
    * {@inheritdoc}
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateSystemPerformanceTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateSystemPerformanceTest.php
index 28d9a8b..bf318a0 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateSystemPerformanceTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateSystemPerformanceTest.php
@@ -9,14 +9,14 @@
 
 use Drupal\migrate\MigrateMessage;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Upgrade performance variables to system.*.yml.
  *
  * @group migrate_drupal
  */
-class MigrateSystemPerformanceTest extends MigrateDrupalTestBase {
+class MigrateSystemPerformanceTest extends MigrateDrupal6TestBase {
 
   /**
    * {@inheritdoc}
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateSystemRssTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateSystemRssTest.php
index e0abd0c..43d45da 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateSystemRssTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateSystemRssTest.php
@@ -9,14 +9,14 @@
 
 use Drupal\migrate\MigrateMessage;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Upgrade rss variable to system.*.yml.
  *
  * @group migrate_drupal
  */
-class MigrateSystemRssTest extends MigrateDrupalTestBase {
+class MigrateSystemRssTest extends MigrateDrupal6TestBase {
 
   /**
    * {@inheritdoc}
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateSystemSiteTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateSystemSiteTest.php
index ca3afac..ff52b58 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateSystemSiteTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateSystemSiteTest.php
@@ -9,14 +9,14 @@
 
 use Drupal\migrate\MigrateMessage;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Upgrade site variables to system.*.yml.
  *
  * @group migrate_drupal
  */
-class MigrateSystemSiteTest extends MigrateDrupalTestBase {
+class MigrateSystemSiteTest extends MigrateDrupal6TestBase {
 
   /**
    * {@inheritdoc}
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateTaxonomyConfigsTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateTaxonomyConfigsTest.php
index 3762845..fb9bbe1 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateTaxonomyConfigsTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateTaxonomyConfigsTest.php
@@ -9,14 +9,14 @@
 
 use Drupal\config\Tests\SchemaCheckTestTrait;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Upgrade variables to taxonomy.settings.yml.
  *
  * @group migrate_drupal
  */
-class MigrateTaxonomyConfigsTest extends MigrateDrupalTestBase {
+class MigrateTaxonomyConfigsTest extends MigrateDrupal6TestBase {
 
   use SchemaCheckTestTrait;
 
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateTaxonomyTermTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateTaxonomyTermTest.php
index 9e8b315..a0397e5 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateTaxonomyTermTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateTaxonomyTermTest.php
@@ -8,7 +8,7 @@
 namespace Drupal\migrate_drupal\Tests\d6;
 
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 use Drupal\taxonomy\Entity\Term;
 
 /**
@@ -16,7 +16,7 @@
  *
  * @group migrate_drupal
  */
-class MigrateTaxonomyTermTest extends MigrateDrupalTestBase {
+class MigrateTaxonomyTermTest extends MigrateDrupal6TestBase {
 
   static $modules = array('taxonomy');
 
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateTaxonomyVocabularyTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateTaxonomyVocabularyTest.php
index ff3c3f2..b3225b8 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateTaxonomyVocabularyTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateTaxonomyVocabularyTest.php
@@ -8,7 +8,7 @@
 namespace Drupal\migrate_drupal\Tests\d6;
 
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 use Drupal\taxonomy\Entity\Vocabulary;
 
 /**
@@ -16,7 +16,7 @@
  *
  * @group migrate_drupal
  */
-class MigrateTaxonomyVocabularyTest extends MigrateDrupalTestBase {
+class MigrateTaxonomyVocabularyTest extends MigrateDrupal6TestBase {
 
   /**
    * Modules to enable.
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateTermNodeTestBase.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateTermNodeTestBase.php
index 153dfe5..753b0f8 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateTermNodeTestBase.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateTermNodeTestBase.php
@@ -7,12 +7,12 @@
 
 namespace Drupal\migrate_drupal\Tests\d6;
 
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Base class for Taxonomy/Node migration tests.
  */
-abstract class MigrateTermNodeTestBase extends MigrateDrupalTestBase {
+abstract class MigrateTermNodeTestBase extends MigrateDrupal6TestBase {
 
   /**
    * {@inheritdoc}
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateTextConfigsTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateTextConfigsTest.php
index 80069c0..6f99a5d 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateTextConfigsTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateTextConfigsTest.php
@@ -9,14 +9,14 @@
 
 use Drupal\config\Tests\SchemaCheckTestTrait;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Upgrade variables to text.settings.yml.
  *
  * @group migrate_drupal
  */
-class MigrateTextConfigsTest extends MigrateDrupalTestBase {
+class MigrateTextConfigsTest extends MigrateDrupal6TestBase {
 
   use SchemaCheckTestTrait;
 
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateUpdateConfigsTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateUpdateConfigsTest.php
index f160db1..e106527 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateUpdateConfigsTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateUpdateConfigsTest.php
@@ -9,14 +9,14 @@
 
 use Drupal\config\Tests\SchemaCheckTestTrait;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Upgrade variables to update.settings.yml.
  *
  * @group migrate_drupal
  */
-class MigrateUpdateConfigsTest extends MigrateDrupalTestBase {
+class MigrateUpdateConfigsTest extends MigrateDrupal6TestBase {
 
   use SchemaCheckTestTrait;
 
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateUploadBase.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateUploadBase.php
index cc38f94..d8946b7 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateUploadBase.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateUploadBase.php
@@ -7,12 +7,12 @@
 
 namespace Drupal\migrate_drupal\Tests\d6;
 
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Base class for file/upload migration tests.
  */
-abstract class MigrateUploadBase extends MigrateDrupalTestBase {
+abstract class MigrateUploadBase extends MigrateDrupal6TestBase {
 
   /**
    * {@inheritdoc}
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateUploadEntityDisplayTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateUploadEntityDisplayTest.php
index e95b243..82a0ffa 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateUploadEntityDisplayTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateUploadEntityDisplayTest.php
@@ -8,14 +8,14 @@
 namespace Drupal\migrate_drupal\Tests\d6;
 
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Upload entity display.
  *
  * @group migrate_drupal
  */
-class MigrateUploadEntityDisplayTest extends MigrateDrupalTestBase {
+class MigrateUploadEntityDisplayTest extends MigrateDrupal6TestBase {
 
   /**
    * The modules to be enabled during the test.
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateUploadEntityFormDisplayTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateUploadEntityFormDisplayTest.php
index 3eed337..02f8a61 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateUploadEntityFormDisplayTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateUploadEntityFormDisplayTest.php
@@ -8,14 +8,14 @@
 namespace Drupal\migrate_drupal\Tests\d6;
 
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Upload form entity display.
  *
  * @group migrate_drupal
  */
-class MigrateUploadEntityFormDisplayTest extends MigrateDrupalTestBase {
+class MigrateUploadEntityFormDisplayTest extends MigrateDrupal6TestBase {
 
   /**
    * The modules to be enabled during the test.
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateUploadFieldTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateUploadFieldTest.php
index 49d2f73..b5165e9 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateUploadFieldTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateUploadFieldTest.php
@@ -9,14 +9,14 @@
 
 use Drupal\field\Entity\FieldStorageConfig;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Uploads migration.
  *
  * @group migrate_drupal
  */
-class MigrateUploadFieldTest extends MigrateDrupalTestBase {
+class MigrateUploadFieldTest extends MigrateDrupal6TestBase {
 
   /**
    * The modules to be enabled during the test.
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateUploadInstanceTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateUploadInstanceTest.php
index bc717fa..4f8cebf 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateUploadInstanceTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateUploadInstanceTest.php
@@ -9,14 +9,14 @@
 
 use Drupal\field\Entity\FieldConfig;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Upload field instance migration.
  *
  * @group migrate_drupal
  */
-class MigrateUploadInstanceTest extends MigrateDrupalTestBase {
+class MigrateUploadInstanceTest extends MigrateDrupal6TestBase {
 
   /**
    * The modules to be enabled during the test.
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateUrlAliasTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateUrlAliasTest.php
index 92bcc51..3886228 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateUrlAliasTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateUrlAliasTest.php
@@ -9,7 +9,7 @@
 
 use Drupal\migrate\MigrateExecutable;
 use Drupal\migrate\Plugin\MigrateIdMapInterface;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 use Drupal\Core\Database\Database;
 
 /**
@@ -17,7 +17,7 @@
  *
  * @group migrate_drupal
  */
-class MigrateUrlAliasTest extends MigrateDrupalTestBase {
+class MigrateUrlAliasTest extends MigrateDrupal6TestBase {
 
   /**
    * {@inheritdoc}
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateUserConfigsTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateUserConfigsTest.php
index 856b404..72a0069 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateUserConfigsTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateUserConfigsTest.php
@@ -9,14 +9,14 @@
 
 use Drupal\config\Tests\SchemaCheckTestTrait;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Upgrade variables to user.*.yml.
  *
  * @group migrate_drupal
  */
-class MigrateUserConfigsTest extends MigrateDrupalTestBase {
+class MigrateUserConfigsTest extends MigrateDrupal6TestBase {
 
   use SchemaCheckTestTrait;
 
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateUserContactSettingsTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateUserContactSettingsTest.php
index f115a06..764d86a 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateUserContactSettingsTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateUserContactSettingsTest.php
@@ -9,14 +9,14 @@
 
 use Drupal\Core\Database\Database;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Users contact settings migration.
  *
  * @group migrate_drupal
  */
-class MigrateUserContactSettingsTest extends MigrateDrupalTestBase {
+class MigrateUserContactSettingsTest extends MigrateDrupal6TestBase {
 
   /**
    * {@inheritdoc}
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateUserPictureEntityDisplayTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateUserPictureEntityDisplayTest.php
index 040c906..bcafe6f 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateUserPictureEntityDisplayTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateUserPictureEntityDisplayTest.php
@@ -8,14 +8,14 @@
 namespace Drupal\migrate_drupal\Tests\d6;
 
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * User picture entity display.
  *
  * @group migrate_drupal
  */
-class MigrateUserPictureEntityDisplayTest extends MigrateDrupalTestBase {
+class MigrateUserPictureEntityDisplayTest extends MigrateDrupal6TestBase {
 
   /**
    * Modules to enable.
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateUserPictureEntityFormDisplayTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateUserPictureEntityFormDisplayTest.php
index 3a1b06a..ca926b1 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateUserPictureEntityFormDisplayTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateUserPictureEntityFormDisplayTest.php
@@ -8,14 +8,14 @@
 namespace Drupal\migrate_drupal\Tests\d6;
 
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * User picture entity form display.
  *
  * @group migrate_drupal
  */
-class MigrateUserPictureEntityFormDisplayTest extends MigrateDrupalTestBase {
+class MigrateUserPictureEntityFormDisplayTest extends MigrateDrupal6TestBase {
 
   /**
    * Modules to enable.
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateUserPictureFieldTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateUserPictureFieldTest.php
index e0f34bb..5a1098a 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateUserPictureFieldTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateUserPictureFieldTest.php
@@ -9,14 +9,14 @@
 
 use Drupal\field\Entity\FieldStorageConfig;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * User picture field migration.
  *
  * @group migrate_drupal
  */
-class MigrateUserPictureFieldTest extends MigrateDrupalTestBase {
+class MigrateUserPictureFieldTest extends MigrateDrupal6TestBase {
 
   static $modules = array('image');
 
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateUserPictureFileTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateUserPictureFileTest.php
index ecd279f..de175e2 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateUserPictureFileTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateUserPictureFileTest.php
@@ -8,14 +8,14 @@
 namespace Drupal\migrate_drupal\Tests\d6;
 
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * User pictures migration.
  *
  * @group migrate_drupal
  */
-class MigrateUserPictureFileTest extends MigrateDrupalTestBase {
+class MigrateUserPictureFileTest extends MigrateDrupal6TestBase {
 
   /**
    * Modules to enable.
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateUserPictureInstanceTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateUserPictureInstanceTest.php
index edd676a..e3dbf70 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateUserPictureInstanceTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateUserPictureInstanceTest.php
@@ -9,14 +9,14 @@
 
 use Drupal\field\Entity\FieldConfig;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * User picture field instance migration.
  *
  * @group migrate_drupal
  */
-class MigrateUserPictureInstanceTest extends MigrateDrupalTestBase {
+class MigrateUserPictureInstanceTest extends MigrateDrupal6TestBase {
 
   /**
    * Modules to enable.
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateUserProfileEntityDisplayTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateUserProfileEntityDisplayTest.php
index 69dc0eb..17e4c85 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateUserProfileEntityDisplayTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateUserProfileEntityDisplayTest.php
@@ -8,7 +8,7 @@
 namespace Drupal\migrate_drupal\Tests\d6;
 
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 use Drupal\Core\Database\Database;
 
 /**
@@ -16,7 +16,7 @@
  *
  * @group migrate_drupal
  */
-class MigrateUserProfileEntityDisplayTest extends MigrateDrupalTestBase {
+class MigrateUserProfileEntityDisplayTest extends MigrateDrupal6TestBase {
 
   /**
    * Modules to enable.
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateUserProfileEntityFormDisplayTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateUserProfileEntityFormDisplayTest.php
index a92ce81..5b8fdfd 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateUserProfileEntityFormDisplayTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateUserProfileEntityFormDisplayTest.php
@@ -8,7 +8,7 @@
 namespace Drupal\migrate_drupal\Tests\d6;
 
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 use Drupal\Core\Database\Database;
 
 /**
@@ -16,7 +16,7 @@
  *
  * @group migrate_drupal
  */
-class MigrateUserProfileEntityFormDisplayTest extends MigrateDrupalTestBase {
+class MigrateUserProfileEntityFormDisplayTest extends MigrateDrupal6TestBase {
 
   static $modules = array('link', 'options', 'datetime');
 
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateUserProfileFieldInstanceTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateUserProfileFieldInstanceTest.php
index faa481b..339be93 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateUserProfileFieldInstanceTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateUserProfileFieldInstanceTest.php
@@ -9,14 +9,14 @@
 
 use Drupal\field\Entity\FieldConfig;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Tests the user profile field instance migration.
  *
  * @group migrate_drupal
  */
-class MigrateUserProfileFieldInstanceTest extends MigrateDrupalTestBase {
+class MigrateUserProfileFieldInstanceTest extends MigrateDrupal6TestBase {
 
   static $modules = array('field', 'link', 'options', 'datetime', 'text');
 
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateUserProfileFieldTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateUserProfileFieldTest.php
index 0c3b5c6..dc3efff 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateUserProfileFieldTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateUserProfileFieldTest.php
@@ -9,14 +9,14 @@
 
 use Drupal\field\Entity\FieldStorageConfig;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Tests the user profile field migration.
  *
  * @group migrate_drupal
  */
-class MigrateUserProfileFieldTest extends MigrateDrupalTestBase {
+class MigrateUserProfileFieldTest extends MigrateDrupal6TestBase {
 
   static $modules = array('link', 'options', 'datetime');
 
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateUserProfileValuesTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateUserProfileValuesTest.php
index 465b6d5..869dbc7 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateUserProfileValuesTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateUserProfileValuesTest.php
@@ -9,7 +9,7 @@
 
 use Drupal\migrate\MigrateExecutable;
 use Drupal\Core\Database\Database;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 use Drupal\user\Entity\User;
 
 /**
@@ -17,7 +17,7 @@
  *
  * @group migrate_drupal
  */
-class MigrateUserProfileValuesTest extends MigrateDrupalTestBase {
+class MigrateUserProfileValuesTest extends MigrateDrupal6TestBase {
 
   /**
    * The modules to be enabled during the test.
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateUserRoleTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateUserRoleTest.php
index bb3ad6f..51b3a56 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateUserRoleTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateUserRoleTest.php
@@ -8,7 +8,7 @@
 namespace Drupal\migrate_drupal\Tests\d6;
 
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 use Drupal\user\Entity\Role;
 
 /**
@@ -16,7 +16,7 @@
  *
  * @group migrate_drupal
  */
-class MigrateUserRoleTest extends MigrateDrupalTestBase {
+class MigrateUserRoleTest extends MigrateDrupal6TestBase {
 
   /**
    * The modules to be enabled during the test.
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateUserTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateUserTest.php
index 7ca1274..746a97f 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateUserTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateUserTest.php
@@ -11,14 +11,14 @@
 use Drupal\file\Entity\File;
 use Drupal\Core\Database\Database;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Users migration.
  *
  * @group migrate_drupal
  */
-class MigrateUserTest extends MigrateDrupalTestBase {
+class MigrateUserTest extends MigrateDrupal6TestBase {
 
   /**
    * The modules to be enabled during the test.
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateViewModesTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateViewModesTest.php
index 4fa1282..05a3d41 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateViewModesTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateViewModesTest.php
@@ -9,14 +9,14 @@
 
 use Drupal\Core\Entity\Entity\EntityViewMode;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Migrate view modes.
  *
  * @group migrate_drupal
  */
-class MigrateViewModesTest extends MigrateDrupalTestBase {
+class MigrateViewModesTest extends MigrateDrupal6TestBase {
 
   /**
    * Modules to enable.
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateVocabularyEntityDisplayTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateVocabularyEntityDisplayTest.php
index 2bd19c6..b05fc5a 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateVocabularyEntityDisplayTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateVocabularyEntityDisplayTest.php
@@ -8,14 +8,14 @@
 namespace Drupal\migrate_drupal\Tests\d6;
 
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Vocabulary entity display migration.
  *
  * @group migrate_drupal
  */
-class MigrateVocabularyEntityDisplayTest extends MigrateDrupalTestBase {
+class MigrateVocabularyEntityDisplayTest extends MigrateDrupal6TestBase {
 
   /**
    * The modules to be enabled during the test.
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateVocabularyEntityFormDisplayTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateVocabularyEntityFormDisplayTest.php
index 5d56c44..c1edc88 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateVocabularyEntityFormDisplayTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateVocabularyEntityFormDisplayTest.php
@@ -8,14 +8,14 @@
 namespace Drupal\migrate_drupal\Tests\d6;
 
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Vocabulary entity form display migration.
  *
  * @group migrate_drupal
  */
-class MigrateVocabularyEntityFormDisplayTest extends MigrateDrupalTestBase {
+class MigrateVocabularyEntityFormDisplayTest extends MigrateDrupal6TestBase {
 
   /**
    * The modules to be enabled during the test.
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateVocabularyFieldInstanceTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateVocabularyFieldInstanceTest.php
index ec7f221..5926270 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateVocabularyFieldInstanceTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateVocabularyFieldInstanceTest.php
@@ -10,14 +10,14 @@
 use Drupal\Core\Field\FieldStorageDefinitionInterface;
 use Drupal\field\Entity\FieldConfig;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Vocabulary field instance migration.
  *
  * @group migrate_drupal
  */
-class MigrateVocabularyFieldInstanceTest extends MigrateDrupalTestBase {
+class MigrateVocabularyFieldInstanceTest extends MigrateDrupal6TestBase {
 
   /**
    * The modules to be enabled during the test.
diff --git a/core/modules/migrate_drupal/src/Tests/d6/MigrateVocabularyFieldTest.php b/core/modules/migrate_drupal/src/Tests/d6/MigrateVocabularyFieldTest.php
index 7760d0e..5375ab7 100644
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateVocabularyFieldTest.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateVocabularyFieldTest.php
@@ -9,14 +9,14 @@
 
 use Drupal\field\Entity\FieldStorageConfig;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Vocabulary field migration.
  *
  * @group migrate_drupal
  */
-class MigrateVocabularyFieldTest extends MigrateDrupalTestBase {
+class MigrateVocabularyFieldTest extends MigrateDrupal6TestBase {
 
   /**
    * The modules to be enabled during the test.
diff --git a/core/modules/migrate_drupal/src/Tests/dependencies/MigrateDependenciesTest.php b/core/modules/migrate_drupal/src/Tests/dependencies/MigrateDependenciesTest.php
index 0e0193d..c7d46d5 100644
--- a/core/modules/migrate_drupal/src/Tests/dependencies/MigrateDependenciesTest.php
+++ b/core/modules/migrate_drupal/src/Tests/dependencies/MigrateDependenciesTest.php
@@ -9,7 +9,7 @@
 
 use Drupal\Component\Utility\String;
 use Drupal\migrate\MigrateExecutable;
-use Drupal\migrate_drupal\Tests\MigrateDrupalTestBase;
+use Drupal\migrate_drupal\Tests\d6\MigrateDrupal6TestBase;
 
 /**
  * Ensure the consistency among the dependencies for migrate.
@@ -18,7 +18,7 @@
  * @group Drupal
  * @group migrate_drupal
  */
-class MigrateDependenciesTest extends MigrateDrupalTestBase {
+class MigrateDependenciesTest extends MigrateDrupal6TestBase {
 
   static $modules = array('aggregator');
 
diff --git a/core/scripts/migrate-dump-d6.sh b/core/scripts/migrate-dump-d6.sh
index b5c0f30..150803f 100755
--- a/core/scripts/migrate-dump-d6.sh
+++ b/core/scripts/migrate-dump-d6.sh
@@ -11,7 +11,7 @@
  * need new Drupal 6 data.
  *
  *  - Clone the repository from: https://www.drupal.org/sandbox/benjy/2405029
- *  - Create a database called d6_migrate and import core/migrate_drupal/src/Tests/d6.gz
+ *  - Create a database called d6_migrate and import core/migrate_drupal/src/Tests/d6/d6.gz
  *  - Add an entry into your Drupal 8 settings file, eg: $databases['d6_migrate']['default'] = array ( // Credentials );
  *  - Use the Drupal 6 site to make data changes as needed.
  *  - Run ./core/scripts/migrate-dump-d6.sh to re-export the tables.
@@ -34,7 +34,7 @@
 $request = Request::createFromGlobals();
 Settings::initialize(dirname(dirname(__DIR__)), DrupalKernel::findSitePath($request), $autoloader);
 
-$output_folder = DRUPAL_ROOT . '/core/modules/migrate_drupal/src/Tests/Table';
+$output_folder = DRUPAL_ROOT . '/core/modules/migrate_drupal/src/Tests/Table/d6';
 $class_template = '<?php
 
 /**
@@ -47,14 +47,14 @@
  * @see https://www.drupal.org/sandbox/benjy/2405029
  */
 
-namespace Drupal\migrate_drupal\Tests\Table;
+namespace Drupal\migrate_drupal\Tests\Table\d6;
 
-use Drupal\migrate_drupal\Tests\Dump\Drupal6DumpBase;
+use Drupal\migrate_drupal\Tests\Dump\DrupalDumpBase;
 
 /**
  * Generated file to represent the {{TABLE}} table.
  */
-class {{CLASS_NAME}} extends Drupal6DumpBase {
+class {{CLASS_NAME}} extends DrupalDumpBase {
 
   public function load() {
     $this->createTable("{{TABLE}}", {{TABLE_DEFINITION}});
