diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/MigrateDrupalTestBase.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/MigrateDrupalTestBase.php
index 7a6579c..f660102 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/MigrateDrupalTestBase.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/MigrateDrupalTestBase.php
@@ -17,4 +17,15 @@ class MigrateDrupalTestBase extends MigrateTestBase {
    * @var array
    */
   public static $modules = array('migrate_drupal');
+
+  /**
+   * Returns the path to the dump directory.
+   *
+   * @return string
+   *   A string that represents the dump directory path.
+   */
+  protected function getDumpDirectory() {
+    return __DIR__ . '/Dump';
+  }
+
 }
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateActionConfigsTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateActionConfigsTest.php
index 7cb9862..b3e36dd 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateActionConfigsTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateActionConfigsTest.php
@@ -40,7 +40,7 @@ public function setUp() {
     parent::setUp();
     $migration = entity_load('migration', 'd6_action_settings');
     $dumps = array(
-      dirname(__DIR__) . '/Dump/Drupal6ActionSettings.php',
+      $this->getDumpDirectory() . '/Drupal6ActionSettings.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, $this);
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateAggregatorConfigsTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateAggregatorConfigsTest.php
index 42b8633..2cb114a 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateAggregatorConfigsTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateAggregatorConfigsTest.php
@@ -40,7 +40,7 @@ public function setUp() {
     parent::setUp();
     $migration = entity_load('migration', 'd6_aggregator_settings');
     $dumps = array(
-      dirname(__DIR__) . '/Dump/Drupal6AggregatorSettings.php',
+      $this->getDumpDirectory() . '/Drupal6AggregatorSettings.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, $this);
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateAggregatorFeedTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateAggregatorFeedTest.php
index a32d37b..191bc38 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateAggregatorFeedTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateAggregatorFeedTest.php
@@ -34,7 +34,7 @@ public function setUp() {
     parent::setUp();
     $migration = entity_load('migration', 'd6_aggregator_feed');
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6AggregatorFeed.php',
+      $this->getDumpDirectory() . '/Drupal6AggregatorFeed.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, $this);
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateAggregatorItemTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateAggregatorItemTest.php
index 6668c53..c5ca816 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateAggregatorItemTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateAggregatorItemTest.php
@@ -55,9 +55,8 @@ public function setUp() {
     $entity->save();
     /** @var \Drupal\migrate\entity\Migration $migration */
     $migration = entity_load('migration', 'd6_aggregator_item');
-    $path = drupal_get_path('module', 'migrate_drupal');
     $dumps = array(
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6AggregatorItem.php',
+      $this->getDumpDirectory() . '/Drupal6AggregatorItem.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, $this);
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateBlockTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateBlockTest.php
index 2bf15b2..3e617f4 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateBlockTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateBlockTest.php
@@ -58,7 +58,7 @@ public function setUp() {
     /** @var \Drupal\migrate\entity\Migration $migration */
     $migration = entity_load('migration', 'd6_block');
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6Block.php',
+      $this->getDumpDirectory() . '/Drupal6Block.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, $this);
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateBookConfigsTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateBookConfigsTest.php
index 5a5fbd4..6f2e179 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateBookConfigsTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateBookConfigsTest.php
@@ -41,7 +41,7 @@ public function setUp() {
     parent::setUp();
     $migration = entity_load('migration', 'd6_book_settings');
     $dumps = array(
-      dirname(__DIR__) . '/Dump/Drupal6BookSettings.php',
+      $this->getDumpDirectory() . '/Drupal6BookSettings.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, new MigrateMessage());
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateBookTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateBookTest.php
index e9a9bfb..d29ad95 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateBookTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateBookTest.php
@@ -46,7 +46,7 @@ protected function setUp() {
     $this->prepareIdMappings($id_mappings);
     // Load database dumps to provide source data.
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6Book.php',
+      $this->getDumpDirectory() . '/Drupal6Book.php',
     );
     $this->loadDumps($dumps);
     // Migrate books..
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateCckFieldRevisionTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateCckFieldRevisionTest.php
index d18077b..2c4ec30 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateCckFieldRevisionTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateCckFieldRevisionTest.php
@@ -73,9 +73,8 @@ protected function setUp() {
       ),
     );
     $this->prepareIdMappings($id_mappings);
-    $path = drupal_get_path('module', 'migrate_drupal');
     $dumps = array(
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6NodeRevision.php',
+      $this->getDumpDirectory() . '/Drupal6NodeRevision.php',
     );
     $this->loadDumps($dumps);
 
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateCommentTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateCommentTest.php
index 06c1340..409f6d2 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateCommentTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateCommentTest.php
@@ -57,7 +57,7 @@ public function setUp() {
     $migration = entity_load('migration', 'd6_comment');
 
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6Comment.php',
+      $this->getDumpDirectory() . '/Drupal6Comment.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, $this);
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateCommentVariableDisplayBase.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateCommentVariableDisplayBase.php
index 787d09a..ac5c9c7 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateCommentVariableDisplayBase.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateCommentVariableDisplayBase.php
@@ -67,7 +67,7 @@ protected function setUp() {
       ))->save();
     }
     $this->dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6CommentVariable.php',
+      $this->getDumpDirectory() . '/Drupal6CommentVariable.php',
     );
     $id_mappings = array(
       'd6_comment_field_instance' => array(
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateCommentVariableField.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateCommentVariableField.php
index 6c5d11d..c5c88c4 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateCommentVariableField.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateCommentVariableField.php
@@ -39,7 +39,7 @@ public function setUp() {
     /** @var \Drupal\migrate\entity\Migration $migration */
     $migration = entity_load('migration', 'd6_comment_field');
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6CommentVariable.php',
+      $this->getDumpDirectory() . '/Drupal6CommentVariable.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, $this);
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateCommentVariableInstance.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateCommentVariableInstance.php
index 0e37c12..60e9b57 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateCommentVariableInstance.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateCommentVariableInstance.php
@@ -56,7 +56,7 @@ public function setUp() {
     /** @var \Drupal\migrate\entity\Migration $migration */
     $migration = entity_load('migration', 'd6_comment_field_instance');
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6CommentVariable.php',
+      $this->getDumpDirectory() . '/Drupal6CommentVariable.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, $this);
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateContactCategoryTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateContactCategoryTest.php
index f46884c..899d08c 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateContactCategoryTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateContactCategoryTest.php
@@ -42,7 +42,7 @@ public function setUp() {
     parent::setUp();
     $migration = entity_load('migration', 'd6_contact_category');
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6ContactCategory.php',
+      $this->getDumpDirectory() . '/Drupal6ContactCategory.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, new MigrateMessage());
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateContactConfigsTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateContactConfigsTest.php
index 21fc8b6..bd56509 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateContactConfigsTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateContactConfigsTest.php
@@ -41,7 +41,7 @@ public function setUp() {
     parent::setUp();
     $migration = entity_load('migration', 'd6_contact_settings');
     $dumps = array(
-      dirname(__DIR__) . '/Dump/Drupal6ContactSettings.php',
+      $this->getDumpDirectory() . '/Drupal6ContactSettings.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, new MigrateMessage());
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateCustomBlockTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateCustomBlockTest.php
index 7620793..eb9da18 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateCustomBlockTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateCustomBlockTest.php
@@ -43,7 +43,7 @@ public function setUp() {
     /** @var \Drupal\migrate\entity\Migration $migration */
     $migration = entity_load('migration', 'd6_custom_block');
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6Box.php',
+      $this->getDumpDirectory() . '/Drupal6Box.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, $this);
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateDateFormatTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateDateFormatTest.php
index 41e7cdc..a79df39 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateDateFormatTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateDateFormatTest.php
@@ -32,7 +32,7 @@ public function setUp() {
     /** @var \Drupal\migrate\entity\Migration $migration */
     $migration = entity_load('migration', 'd6_date_formats');
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6DateFormat.php',
+      $this->getDumpDirectory() . '/Drupal6DateFormat.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, new MigrateMessage());
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateDblogConfigsTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateDblogConfigsTest.php
index 333f815..e4753f4 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateDblogConfigsTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateDblogConfigsTest.php
@@ -41,7 +41,7 @@ public function setUp() {
     parent::setUp();
     $migration = entity_load('migration', 'd6_dblog_settings');
     $dumps = array(
-      dirname(__DIR__) . '/Dump/Drupal6DblogSettings.php',
+      $this->getDumpDirectory() . '/Drupal6DblogSettings.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, new MigrateMessage());
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateDrupal6Test.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateDrupal6Test.php
index 6b973c7..1e393a6 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateDrupal6Test.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateDrupal6Test.php
@@ -79,66 +79,66 @@ public function tearDown() {
    * Test the complete Drupal 6 migration.
    */
   public function testDrupal6() {
-    $path = drupal_get_path('module', 'migrate_drupal');
+    $tests_path = $this->getDumpDirectory();
     $dumps = array(
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6ActionSettings.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6AggregatorFeed.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6AggregatorItem.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6AggregatorSettings.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6Block.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6BookSettings.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6Box.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6Comment.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6CommentVariable.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6ContactCategory.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6ContactSettings.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6DateFormat.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6DblogSettings.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6FieldInstance.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6FieldSettings.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6File.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6FileSettings.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6FilterFormat.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6ForumSettings.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6LocaleSettings.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6Menu.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6MenuSettings.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6NodeBodyInstance.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6Node.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6NodeRevision.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6NodeSettings.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6NodeType.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6SearchPage.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6SearchSettings.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6SimpletestSettings.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6StatisticsSettings.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6SyslogSettings.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6SystemCron.php',
+      $tests_path . '/Drupal6ActionSettings.php',
+      $tests_path . '/Drupal6AggregatorFeed.php',
+      $tests_path . '/Drupal6AggregatorItem.php',
+      $tests_path . '/Drupal6AggregatorSettings.php',
+      $tests_path . '/Drupal6Block.php',
+      $tests_path . '/Drupal6BookSettings.php',
+      $tests_path . '/Drupal6Box.php',
+      $tests_path . '/Drupal6Comment.php',
+      $tests_path . '/Drupal6CommentVariable.php',
+      $tests_path . '/Drupal6ContactCategory.php',
+      $tests_path . '/Drupal6ContactSettings.php',
+      $tests_path . '/Drupal6DateFormat.php',
+      $tests_path . '/Drupal6DblogSettings.php',
+      $tests_path . '/Drupal6FieldInstance.php',
+      $tests_path . '/Drupal6FieldSettings.php',
+      $tests_path . '/Drupal6File.php',
+      $tests_path . '/Drupal6FileSettings.php',
+      $tests_path . '/Drupal6FilterFormat.php',
+      $tests_path . '/Drupal6ForumSettings.php',
+      $tests_path . '/Drupal6LocaleSettings.php',
+      $tests_path . '/Drupal6Menu.php',
+      $tests_path . '/Drupal6MenuSettings.php',
+      $tests_path . '/Drupal6NodeBodyInstance.php',
+      $tests_path . '/Drupal6Node.php',
+      $tests_path . '/Drupal6NodeRevision.php',
+      $tests_path . '/Drupal6NodeSettings.php',
+      $tests_path . '/Drupal6NodeType.php',
+      $tests_path . '/Drupal6SearchPage.php',
+      $tests_path . '/Drupal6SearchSettings.php',
+      $tests_path . '/Drupal6SimpletestSettings.php',
+      $tests_path . '/Drupal6StatisticsSettings.php',
+      $tests_path . '/Drupal6SyslogSettings.php',
+      $tests_path . '/Drupal6SystemCron.php',
       // This dump contains the file directory path to the simpletest directory
       // where the files are.
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6SystemFile.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6SystemFilter.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6SystemImageGd.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6SystemImage.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6SystemMaintenance.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6SystemPerformance.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6SystemRss.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6SystemSite.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6SystemTheme.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6TaxonomySettings.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6TaxonomyTerm.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6TaxonomyVocabulary.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6TermNode.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6TextSettings.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6UpdateSettings.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6UploadInstance.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6Upload.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6UrlAlias.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6UserMail.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6User.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6UserProfileFields.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6UserRole.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6VocabularyField.php',
+      $tests_path . '/Drupal6SystemFile.php',
+      $tests_path . '/Drupal6SystemFilter.php',
+      $tests_path . '/Drupal6SystemImageGd.php',
+      $tests_path . '/Drupal6SystemImage.php',
+      $tests_path . '/Drupal6SystemMaintenance.php',
+      $tests_path . '/Drupal6SystemPerformance.php',
+      $tests_path . '/Drupal6SystemRss.php',
+      $tests_path . '/Drupal6SystemSite.php',
+      $tests_path . '/Drupal6SystemTheme.php',
+      $tests_path . '/Drupal6TaxonomySettings.php',
+      $tests_path . '/Drupal6TaxonomyTerm.php',
+      $tests_path . '/Drupal6TaxonomyVocabulary.php',
+      $tests_path . '/Drupal6TermNode.php',
+      $tests_path . '/Drupal6TextSettings.php',
+      $tests_path . '/Drupal6UpdateSettings.php',
+      $tests_path . '/Drupal6UploadInstance.php',
+      $tests_path . '/Drupal6Upload.php',
+      $tests_path . '/Drupal6UrlAlias.php',
+      $tests_path . '/Drupal6UserMail.php',
+      $tests_path . '/Drupal6User.php',
+      $tests_path . '/Drupal6UserProfileFields.php',
+      $tests_path . '/Drupal6UserRole.php',
+      $tests_path . '/Drupal6VocabularyField.php',
     );
     $this->loadDumps($dumps);
     $migrations = array(
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateFieldConfigsTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateFieldConfigsTest.php
index 9f02830..4a7e340 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateFieldConfigsTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateFieldConfigsTest.php
@@ -33,7 +33,7 @@ public function setUp() {
     parent::setUp();
     $migration = entity_load('migration', 'd6_field_settings');
     $dumps = array(
-      dirname(__DIR__) . '/Dump/Drupal6FieldSettings.php',
+      $this->getDumpDirectory() . '/Drupal6FieldSettings.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, $this);
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateFieldFormatterSettingsTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateFieldFormatterSettingsTest.php
index 2cbc837..683a0f1 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateFieldFormatterSettingsTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateFieldFormatterSettingsTest.php
@@ -74,7 +74,7 @@ public function setUp() {
 
     $migration = entity_load('migration', 'd6_field_formatter_settings');
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6FieldInstance.php',
+      $this->getDumpDirectory() . '/Drupal6FieldInstance.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, $this);
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateFieldInstanceTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateFieldInstanceTest.php
index 5c3da6e..4bd26f7 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateFieldInstanceTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateFieldInstanceTest.php
@@ -75,7 +75,7 @@ public function setUp() {
 
     $migration = entity_load('migration', 'd6_field_instance');
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6FieldInstance.php',
+      $this->getDumpDirectory() . '/Drupal6FieldInstance.php',
     );
     $this->createFields();
 
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateFieldTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateFieldTest.php
index 005ad53..a6737f0 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateFieldTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateFieldTest.php
@@ -41,7 +41,7 @@ public function setUp() {
     /** @var \Drupal\migrate\entity\Migration $migration */
     $migration = entity_load('migration', 'd6_field');
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6FieldInstance.php',
+      $this->getDumpDirectory() . '/Drupal6FieldInstance.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, $this);
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateFieldWidgetSettingsTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateFieldWidgetSettingsTest.php
index c85e388..c18691f 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateFieldWidgetSettingsTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateFieldWidgetSettingsTest.php
@@ -72,7 +72,7 @@ public function setUp() {
     $this->prepareIdMappings($id_mappings);
     $migration = entity_load('migration', 'd6_field_instance_widget_settings');
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6FieldInstance.php',
+      $this->getDumpDirectory() . '/Drupal6FieldInstance.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, $this);
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateFileConfigsTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateFileConfigsTest.php
index a09f17f..fc7edc4 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateFileConfigsTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateFileConfigsTest.php
@@ -41,7 +41,7 @@ public function setUp() {
     parent::setUp();
     $migration = entity_load('migration', 'd6_file_settings');
     $dumps = array(
-      dirname(__DIR__) . '/Dump/Drupal6FileSettings.php',
+      $this->getDumpDirectory() . '/Drupal6FileSettings.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, new MigrateMessage());
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateFileTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateFileTest.php
index f453641..9e5c6ab 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateFileTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateFileTest.php
@@ -39,7 +39,7 @@ public static function getInfo() {
   protected function setUp() {
     parent::setUp();
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6File.php',
+      $this->getDumpDirectory() . '/Drupal6File.php',
     );
     /** @var \Drupal\migrate\entity\Migration $migration */
     $migration = entity_load('migration', 'd6_file');
@@ -69,7 +69,7 @@ public function testFiles() {
     db_truncate(entity_load('migration', 'd6_file')->getIdMap()->mapTableName())->execute();
     $migration = entity_load_unchanged('migration', 'd6_file');
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6SystemFile.php',
+      $this->getDumpDirectory() . '/Drupal6SystemFile.php',
     );
     $this->loadDumps($dumps, 'loadMigrateFileStandalone');
     $executable = new MigrateExecutable($migration, $this);
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateFilterFormatTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateFilterFormatTest.php
index fdb7d2b..47a3f32 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateFilterFormatTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateFilterFormatTest.php
@@ -39,7 +39,7 @@ public function setUp() {
     parent::setUp();
     $migration = entity_load('migration', 'd6_filter_format');
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6FilterFormat.php',
+      $this->getDumpDirectory() . '/Drupal6FilterFormat.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, $this);
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateForumConfigsTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateForumConfigsTest.php
index 9ebecf1..d5fb297 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateForumConfigsTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateForumConfigsTest.php
@@ -40,7 +40,7 @@ public function setUp() {
     parent::setUp();
     $migration = entity_load('migration', 'd6_forum_settings');
     $dumps = array(
-      dirname(__DIR__) . '/Dump/Drupal6ForumSettings.php',
+      $this->getDumpDirectory() . '/Drupal6ForumSettings.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, $this);
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateLocaleConfigsTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateLocaleConfigsTest.php
index c84aee2..de89d92 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateLocaleConfigsTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateLocaleConfigsTest.php
@@ -40,7 +40,7 @@ public function setUp() {
     parent::setUp();
     $migration = entity_load('migration', 'd6_locale_settings');
     $dumps = array(
-      dirname(__DIR__) . '/Dump/Drupal6LocaleSettings.php',
+      $this->getDumpDirectory() . '/Drupal6LocaleSettings.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, $this);
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateMenuConfigsTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateMenuConfigsTest.php
index b14cfc5..05cb110 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateMenuConfigsTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateMenuConfigsTest.php
@@ -40,7 +40,7 @@ public function setUp() {
     parent::setUp();
     $migration = entity_load('migration', 'd6_menu_settings');
     $dumps = array(
-      dirname(__DIR__) . '/Dump/Drupal6MenuSettings.php',
+      $this->getDumpDirectory() . '/Drupal6MenuSettings.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, $this);
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateMenuTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateMenuTest.php
index 95e95c7..d2839cb 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateMenuTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateMenuTest.php
@@ -35,7 +35,7 @@ public function setUp() {
     parent::setUp();
     $migration = entity_load('migration', 'd6_menu');
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6Menu.php',
+      $this->getDumpDirectory() . '/Drupal6Menu.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, new MigrateMessage());
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateNodeConfigsTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateNodeConfigsTest.php
index 39edf2e..165fe13 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateNodeConfigsTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateNodeConfigsTest.php
@@ -41,7 +41,7 @@ public function setUp() {
     parent::setUp();
     $migration = entity_load('migration', 'd6_node_settings');
     $dumps = array(
-      dirname(__DIR__) . '/Dump/Drupal6NodeSettings.php',
+      $this->getDumpDirectory() . '/Drupal6NodeSettings.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, new MigrateMessage);
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateNodeRevisionTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateNodeRevisionTest.php
index 7f456cf..b121227 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateNodeRevisionTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateNodeRevisionTest.php
@@ -37,9 +37,8 @@ protected function setUp() {
     );
     $this->prepareIdMappings($id_mappings);
 
-    $path = drupal_get_path('module', 'migrate_drupal');
     $dumps = array(
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6NodeRevision.php',
+      $this->getDumpDirectory() . '/Drupal6NodeRevision.php',
     );
     $this->loadDumps($dumps);
     /** @var \Drupal\migrate\entity\Migration $migration */
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateNodeTestBase.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateNodeTestBase.php
index 48e9d0a..26a4c34 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateNodeTestBase.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateNodeTestBase.php
@@ -43,11 +43,10 @@ protected function setUp() {
     $node->save();
 
     // Load dumps.
-    $path = drupal_get_path('module', 'migrate_drupal');
     $dumps = array(
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6Node.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6NodeType.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6FieldInstance.php',
+      $this->getDumpDirectory() . '/Drupal6Node.php',
+      $this->getDumpDirectory() . '/Drupal6NodeType.php',
+      $this->getDumpDirectory() . '/Drupal6FieldInstance.php',
     );
     $this->loadDumps($dumps);
   }
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateNodeTypeTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateNodeTypeTest.php
index 6867bc2..3c72ad9 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateNodeTypeTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateNodeTypeTest.php
@@ -41,7 +41,7 @@ public function setUp() {
     parent::setUp();
     $migration = entity_load('migration', 'd6_node_type');
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6NodeType.php',
+      $this->getDumpDirectory() . '/Drupal6NodeType.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, $this);
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateProfileValuesTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateProfileValuesTest.php
index e2b73b8..e3e6d7e 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateProfileValuesTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateProfileValuesTest.php
@@ -123,10 +123,9 @@ protected function setUp() {
     $this->prepareIdMappings($id_mappings);
 
     // Load database dumps to provide source data.
-    $path = drupal_get_path('module', 'migrate_drupal');
     $dumps = array(
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6UserProfileFields.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6User.php',
+      $this->getDumpDirectory() . '/Drupal6UserProfileFields.php',
+      $this->getDumpDirectory() . '/Drupal6User.php',
     );
     $this->loadDumps($dumps);
 
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSearchConfigsTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSearchConfigsTest.php
index f34891d..c2c5dbf 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSearchConfigsTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSearchConfigsTest.php
@@ -41,7 +41,7 @@ protected function setUp() {
     parent::setUp();
     $migration = entity_load('migration', 'd6_search_settings');
     $dumps = array(
-      dirname(__DIR__) . '/Dump/Drupal6SearchSettings.php',
+      $this->getDumpDirectory() . '/Drupal6SearchSettings.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, new MigrateMessage());
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSearchPageTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSearchPageTest.php
index 6540099..838116b 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSearchPageTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSearchPageTest.php
@@ -42,7 +42,7 @@ protected function setUp() {
     /** @var \Drupal\migrate\entity\Migration $migration */
     $migration = entity_load('migration', 'd6_search_page');
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6SearchPage.php',
+      $this->getDumpDirectory() . '/Drupal6SearchPage.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, $this);
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSimpletestConfigsTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSimpletestConfigsTest.php
index 00b3512..688410b 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSimpletestConfigsTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSimpletestConfigsTest.php
@@ -41,7 +41,7 @@ protected function setUp() {
     parent::setUp();
     $migration = entity_load('migration', 'd6_simpletest_settings');
     $dumps = array(
-      dirname(__DIR__) . '/Dump/Drupal6SimpletestSettings.php',
+      $this->getDumpDirectory() . '/Drupal6SimpletestSettings.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, new MigrateMessage());
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateStatisticsConfigsTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateStatisticsConfigsTest.php
index 0be390e..eaac333 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateStatisticsConfigsTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateStatisticsConfigsTest.php
@@ -41,7 +41,7 @@ protected function setUp() {
     parent::setUp();
     $migration = entity_load('migration', 'd6_statistics_settings');
     $dumps = array(
-      dirname(__DIR__) . '/Dump/Drupal6StatisticsSettings.php',
+      $this->getDumpDirectory() . '/Drupal6StatisticsSettings.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, new MigrateMessage());
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSyslogConfigsTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSyslogConfigsTest.php
index 86b3892..587bbb8 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSyslogConfigsTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSyslogConfigsTest.php
@@ -40,7 +40,7 @@ protected function setUp() {
     parent::setUp();
     $migration = entity_load('migration', 'd6_syslog_settings');
     $dumps = array(
-      dirname(__DIR__) . '/Dump/Drupal6SyslogSettings.php',
+      $this->getDumpDirectory() . '/Drupal6SyslogSettings.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, $this);
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSystemCronTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSystemCronTest.php
index e159c8a..764dbac 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSystemCronTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSystemCronTest.php
@@ -34,7 +34,7 @@ protected function setUp() {
     parent::setUp();
     $migration = entity_load('migration', 'd6_system_cron');
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6SystemCron.php',
+      $this->getDumpDirectory() . '/Drupal6SystemCron.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, new MigrateMessage());
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSystemFileTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSystemFileTest.php
index 797ee71..6e9b6f8 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSystemFileTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSystemFileTest.php
@@ -31,7 +31,7 @@ protected function setUp() {
     parent::setUp();
     $migration = entity_load('migration', 'd6_system_file');
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6SystemFile.php',
+      $this->getDumpDirectory() . '/Drupal6SystemFile.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, new MigrateMessage());
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSystemFilterTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSystemFilterTest.php
index 418e0c8..d501cc5 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSystemFilterTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSystemFilterTest.php
@@ -34,7 +34,7 @@ protected function setUp() {
     parent::setUp();
     $migration = entity_load('migration', 'd6_system_filter');
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6SystemFilter.php',
+      $this->getDumpDirectory() . '/Drupal6SystemFilter.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, new MigrateMessage());
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSystemImageGdTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSystemImageGdTest.php
index 23d3373..919d794 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSystemImageGdTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSystemImageGdTest.php
@@ -31,7 +31,7 @@ protected function setUp() {
     parent::setUp();
     $migration = entity_load('migration', 'd6_system_image_gd');
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6SystemImageGd.php',
+      $this->getDumpDirectory() . '/Drupal6SystemImageGd.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, new MigrateMessage());
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSystemImageTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSystemImageTest.php
index 1894f4f..4f1dbac 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSystemImageTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSystemImageTest.php
@@ -31,7 +31,7 @@ protected function setUp() {
     parent::setUp();
     $migration = entity_load('migration', 'd6_system_image');
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6SystemImage.php',
+      $this->getDumpDirectory() . '/Drupal6SystemImage.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, new MigrateMessage());
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSystemMaintenanceTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSystemMaintenanceTest.php
index d08f9c7..70b78d3 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSystemMaintenanceTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSystemMaintenanceTest.php
@@ -31,7 +31,7 @@ protected function setUp() {
     parent::setUp();
     $migration = entity_load('migration', 'd6_system_maintenance');
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6SystemMaintenance.php',
+      $this->getDumpDirectory() . '/Drupal6SystemMaintenance.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, new MigrateMessage());
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSystemPerformanceTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSystemPerformanceTest.php
index ff3feb8..ec98b7e 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSystemPerformanceTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSystemPerformanceTest.php
@@ -31,7 +31,7 @@ protected function setUp() {
     parent::setUp();
     $migration = entity_load('migration', 'd6_system_performance');
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6SystemPerformance.php',
+      $this->getDumpDirectory() . '/Drupal6SystemPerformance.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, new MigrateMessage());
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSystemRssTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSystemRssTest.php
index 69bc4e6..1584910 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSystemRssTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSystemRssTest.php
@@ -31,7 +31,7 @@ protected function setUp() {
     parent::setUp();
     $migration = entity_load('migration', 'd6_system_rss');
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6SystemRss.php',
+      $this->getDumpDirectory() . '/Drupal6SystemRss.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, new MigrateMessage());
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSystemSiteTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSystemSiteTest.php
index bd17eb0..f4df9cf 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSystemSiteTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSystemSiteTest.php
@@ -31,7 +31,7 @@ protected function setUp() {
     parent::setUp();
     $migration = entity_load('migration', 'd6_system_site');
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6SystemSite.php',
+      $this->getDumpDirectory() . '/Drupal6SystemSite.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, new MigrateMessage());
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSystemThemeTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSystemThemeTest.php
index 31bef18..b5c0ff5 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSystemThemeTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSystemThemeTest.php
@@ -31,7 +31,7 @@ protected function setUp() {
     parent::setUp();
     $migration = entity_load('migration', 'd6_system_theme');
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6SystemTheme.php',
+      $this->getDumpDirectory() . '/Drupal6SystemTheme.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, new MigrateMessage());
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateTaxonomyConfigsTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateTaxonomyConfigsTest.php
index 07b60cc..b89874b 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateTaxonomyConfigsTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateTaxonomyConfigsTest.php
@@ -40,7 +40,7 @@ protected function setUp() {
     parent::setUp();
     $migration = entity_load('migration', 'd6_taxonomy_settings');
     $dumps = array(
-      dirname(__DIR__) . '/Dump/Drupal6TaxonomySettings.php',
+      $this->getDumpDirectory() . '/Drupal6TaxonomySettings.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, $this);
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateTaxonomyTermTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateTaxonomyTermTest.php
index 6f963ae..a4f5b13 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateTaxonomyTermTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateTaxonomyTermTest.php
@@ -42,10 +42,9 @@ protected function setUp() {
     )));
     /** @var \Drupal\migrate\entity\Migration $migration */
     $migration = entity_load('migration', 'd6_taxonomy_term');
-    $path = drupal_get_path('module', 'migrate_drupal');
     $dumps = array(
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6TaxonomyTerm.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6TaxonomyVocabulary.php',
+      $this->getDumpDirectory() . '/Drupal6TaxonomyTerm.php',
+      $this->getDumpDirectory() . '/Drupal6TaxonomyVocabulary.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, $this);
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateTaxonomyVocabularyTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateTaxonomyVocabularyTest.php
index 52977b5..719cd86 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateTaxonomyVocabularyTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateTaxonomyVocabularyTest.php
@@ -41,7 +41,7 @@ protected function setUp() {
     parent::setUp();
     $migration = entity_load('migration', 'd6_taxonomy_vocabulary');
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6TaxonomyVocabulary.php',
+      $this->getDumpDirectory() . '/Drupal6TaxonomyVocabulary.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, $this);
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateTermNodeTestBase.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateTermNodeTestBase.php
index c1f333b..e7b64d1 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateTermNodeTestBase.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateTermNodeTestBase.php
@@ -83,12 +83,11 @@ protected function setUp() {
         $node->save();
       }
     }
-    $path = drupal_get_path('module', 'migrate_drupal');
     $dumps = array(
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6Node.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6TermNode.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6TaxonomyTerm.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6TaxonomyVocabulary.php',
+      $this->getDumpDirectory() . '/Drupal6Node.php',
+      $this->getDumpDirectory() . '/Drupal6TermNode.php',
+      $this->getDumpDirectory() . '/Drupal6TaxonomyTerm.php',
+      $this->getDumpDirectory() . '/Drupal6TaxonomyVocabulary.php',
     );
     $this->loadDumps($dumps);
   }
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateTextConfigsTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateTextConfigsTest.php
index 8fc8489..04e659b 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateTextConfigsTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateTextConfigsTest.php
@@ -40,7 +40,7 @@ protected function setUp() {
     parent::setUp();
     $migration = entity_load('migration', 'd6_text_settings');
     $dumps = array(
-      dirname(__DIR__) . '/Dump/Drupal6TextSettings.php',
+      $this->getDumpDirectory() . '/Drupal6TextSettings.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, $this);
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUpdateConfigsTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUpdateConfigsTest.php
index 2296598..444fa7f 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUpdateConfigsTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUpdateConfigsTest.php
@@ -40,7 +40,7 @@ protected function setUp() {
     parent::setUp();
     $migration = entity_load('migration', 'd6_update_settings');
     $dumps = array(
-      dirname(__DIR__) . '/Dump/Drupal6UpdateSettings.php',
+      $this->getDumpDirectory() . '/Drupal6UpdateSettings.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, $this);
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUploadBase.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUploadBase.php
index 90b46de..c730cf1 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUploadBase.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUploadBase.php
@@ -81,10 +81,9 @@ public function setUp() {
         $node->save();
       }
     }
-    $path = drupal_get_path('module', 'migrate_drupal');
     $dumps = array(
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6Node.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6Upload.php',
+      $this->getDumpDirectory() . '/Drupal6Node.php',
+      $this->getDumpDirectory() . '/Drupal6Upload.php',
     );
     $this->loadDumps($dumps);
   }
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUploadEntityDisplayTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUploadEntityDisplayTest.php
index 3d312ba..ec994b6 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUploadEntityDisplayTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUploadEntityDisplayTest.php
@@ -52,7 +52,7 @@ protected function setUp() {
 
     $migration = entity_load('migration', 'd6_upload_entity_display');
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6UploadInstance.php',
+      $this->getDumpDirectory() . '/Drupal6UploadInstance.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, $this);
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUploadEntityFormDisplayTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUploadEntityFormDisplayTest.php
index fd74202..9d58993 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUploadEntityFormDisplayTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUploadEntityFormDisplayTest.php
@@ -52,7 +52,7 @@ protected function setUp() {
 
     $migration = entity_load('migration', 'd6_upload_entity_form_display');
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6UploadInstance.php',
+      $this->getDumpDirectory() . '/Drupal6UploadInstance.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, $this);
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUploadFieldTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUploadFieldTest.php
index 83edcfb..ceac437 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUploadFieldTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUploadFieldTest.php
@@ -42,7 +42,7 @@ protected function setUp() {
     $executable = new MigrateExecutable($migration, $this);
     $executable->import();
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6UploadField.php',
+      $this->getDumpDirectory() . '/Drupal6UploadField.php',
     );
     $this->prepare($migration, $dumps);
   }
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUploadInstanceTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUploadInstanceTest.php
index ee293df..e12f04b 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUploadInstanceTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUploadInstanceTest.php
@@ -58,7 +58,7 @@ protected function setUp() {
 
     $migration = entity_load('migration', 'd6_upload_field_instance');
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6UploadInstance.php',
+      $this->getDumpDirectory() . '/Drupal6UploadInstance.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, $this);
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUrlAliasTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUrlAliasTest.php
index 29e3ac9..bec9a4e 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUrlAliasTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUrlAliasTest.php
@@ -35,7 +35,7 @@ protected function setUp() {
     parent::setUp();
     $migration = entity_load('migration', 'd6_url_alias');
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6UrlAlias.php',
+      $this->getDumpDirectory() . '/Drupal6UrlAlias.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, $this);
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUserConfigsTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUserConfigsTest.php
index 6c41f5d..ac5c9d3 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUserConfigsTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUserConfigsTest.php
@@ -33,7 +33,7 @@ protected function setUp() {
     parent::setUp();
     $migration = entity_load('migration', 'd6_user_mail');
     $dumps = array(
-      dirname(__DIR__) . '/Dump/Drupal6UserMail.php',
+      $this->getDumpDirectory() . '/Drupal6UserMail.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, $this);
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUserPictureFileTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUserPictureFileTest.php
index 0bf5947..7fe2895 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUserPictureFileTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUserPictureFileTest.php
@@ -39,7 +39,7 @@ public static function getInfo() {
   public function setUp() {
     parent::setUp();
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6User.php',
+      $this->getDumpDirectory() . '/Drupal6User.php',
     );
     /** @var \Drupal\migrate\entity\Migration $migration */
     $migration = entity_load('migration', 'd6_user_picture_file');
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUserProfileEntityDisplayTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUserProfileEntityDisplayTest.php
index 62ece55..372126f 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUserProfileEntityDisplayTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUserProfileEntityDisplayTest.php
@@ -91,7 +91,7 @@ protected function setUp() {
 
     $migration = entity_load('migration', 'd6_user_profile_entity_display');
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6UserProfileFields.php',
+      $this->getDumpDirectory() . '/Drupal6UserProfileFields.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, $this);
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUserProfileEntityFormDisplayTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUserProfileEntityFormDisplayTest.php
index 028f465..40257e9 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUserProfileEntityFormDisplayTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUserProfileEntityFormDisplayTest.php
@@ -86,7 +86,7 @@ protected function setUp() {
 
     $migration = entity_load('migration', 'd6_user_profile_entity_form_display');
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6UserProfileFields.php',
+      $this->getDumpDirectory() . '/Drupal6UserProfileFields.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, $this);
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUserProfileFieldInstanceTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUserProfileFieldInstanceTest.php
index 3dd1d9f..7393fea 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUserProfileFieldInstanceTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUserProfileFieldInstanceTest.php
@@ -44,7 +44,7 @@ protected function setUp() {
     /** @var \Drupal\migrate\entity\Migration $migration */
     $migration = entity_load('migration', 'd6_user_profile_field_instance');
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6UserProfileFields.php',
+      $this->getDumpDirectory() . '/Drupal6UserProfileFields.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, $this);
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUserProfileFieldTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUserProfileFieldTest.php
index 2d1a773..696695c 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUserProfileFieldTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUserProfileFieldTest.php
@@ -35,7 +35,7 @@ protected function setUp() {
     parent::setUp();
     $migration = entity_load('migration', 'd6_user_profile_field');
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6UserProfileFields.php',
+      $this->getDumpDirectory() . '/Drupal6UserProfileFields.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, $this);
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUserRoleTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUserRoleTest.php
index 46147f7..dffb1d2 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUserRoleTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUserRoleTest.php
@@ -50,8 +50,8 @@ public function setUp() {
     /** @var \Drupal\migrate\entity\Migration $migration */
     $migration = entity_load('migration', 'd6_user_role');
     $dumps = array(
-      dirname(__DIR__) . '/Dump/Drupal6UserRole.php',
-      dirname(__DIR__) . '/Dump/Drupal6FilterFormat.php',
+      $this->getDumpDirectory() . '/Drupal6UserRole.php',
+      $this->getDumpDirectory() . '/Drupal6FilterFormat.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, $this);
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUserTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUserTest.php
index bc071ae..d894b1c 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUserTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateUserTest.php
@@ -91,12 +91,11 @@ protected function setUp() {
     $file->save();
 
     // Load database dumps to provide source data.
-    $path = drupal_get_path('module', 'migrate_drupal');
     $dumps = array(
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6FilterFormat.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6UserProfileFields.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6UserRole.php',
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6User.php',
+      $this->getDumpDirectory() . '/Drupal6FilterFormat.php',
+      $this->getDumpDirectory() . '/Drupal6UserProfileFields.php',
+      $this->getDumpDirectory() . '/Drupal6UserRole.php',
+      $this->getDumpDirectory() . '/Drupal6User.php',
     );
     $this->loadDumps($dumps);
 
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateViewModesTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateViewModesTest.php
index b504e1e..2c43aee 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateViewModesTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateViewModesTest.php
@@ -40,7 +40,7 @@ public function setUp() {
     parent::setUp();
     $migration = entity_load('migration', 'd6_view_modes');
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6FieldInstance.php',
+      $this->getDumpDirectory() . '/Drupal6FieldInstance.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, $this);
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateVocabularyEntityDisplayTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateVocabularyEntityDisplayTest.php
index 891fb23..4b7066c 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateVocabularyEntityDisplayTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateVocabularyEntityDisplayTest.php
@@ -70,7 +70,7 @@ protected function setUp() {
 
     $migration = entity_load('migration', 'd6_vocabulary_entity_display');
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6VocabularyField.php',
+      $this->getDumpDirectory() . '/Drupal6VocabularyField.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, $this);
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateVocabularyEntityFormDisplayTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateVocabularyEntityFormDisplayTest.php
index dcabea4..00022f6 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateVocabularyEntityFormDisplayTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateVocabularyEntityFormDisplayTest.php
@@ -70,7 +70,7 @@ protected function setUp() {
 
     $migration = entity_load('migration', 'd6_vocabulary_entity_form_display');
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6VocabularyField.php',
+      $this->getDumpDirectory() . '/Drupal6VocabularyField.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, $this);
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateVocabularyFieldInstanceTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateVocabularyFieldInstanceTest.php
index 74abb07..a569062 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateVocabularyFieldInstanceTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateVocabularyFieldInstanceTest.php
@@ -69,7 +69,7 @@ protected function setUp() {
 
     $migration = entity_load('migration', 'd6_vocabulary_field_instance');
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6VocabularyField.php',
+      $this->getDumpDirectory() . '/Drupal6VocabularyField.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, $this);
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateVocabularyFieldTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateVocabularyFieldTest.php
index 7127c77..df4781c 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateVocabularyFieldTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateVocabularyFieldTest.php
@@ -55,7 +55,7 @@ protected function setUp() {
 
     $migration = entity_load('migration', 'd6_vocabulary_field');
     $dumps = array(
-      drupal_get_path('module', 'migrate_drupal') . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6VocabularyField.php',
+      $this->getDumpDirectory() . '/Drupal6VocabularyField.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, $this);
diff --git a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/dependencies/MigrateDependenciesTest.php b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/dependencies/MigrateDependenciesTest.php
index f9a53f3..32941fb 100644
--- a/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/dependencies/MigrateDependenciesTest.php
+++ b/core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/dependencies/MigrateDependenciesTest.php
@@ -56,9 +56,8 @@ public function testMigrateDependenciesOrder() {
   public function testAggregatorMigrateDependencies() {
     /** @var \Drupal\migrate\entity\Migration $migration */
     $migration = entity_load('migration', 'd6_aggregator_item');
-    $path = drupal_get_path('module', 'migrate_drupal');
     $dumps = array(
-      $path . '/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6AggregatorItem.php',
+      $this->getDumpDirectory() . '/Drupal6AggregatorItem.php',
     );
     $this->prepare($migration, $dumps);
     $executable = new MigrateExecutable($migration, $this);