only in patch2:
unchanged:
--- a/core/modules/migrate_drupal/src/Tests/d6/MigrateDrupal6Test.php
+++ b/core/modules/migrate_drupal/src/Tests/d6/MigrateDrupal6Test.php
@@ -231,10 +231,10 @@ protected function getTestClassesList() {
       __NAMESPACE__ . '\MigrateCckFieldRevisionTest',
       __NAMESPACE__ . '\MigrateCommentTypeTest',
       __NAMESPACE__ . '\MigrateCommentTest',
-      __NAMESPACE__ . '\MigrateCommentVariableEntityDisplay',
-      __NAMESPACE__ . '\MigrateCommentVariableEntityFormDisplay',
-      __NAMESPACE__ . '\MigrateCommentVariableField',
-      __NAMESPACE__ . '\MigrateCommentVariableInstance',
+      __NAMESPACE__ . '\MigrateCommentVariableEntityDisplayTest',
+      __NAMESPACE__ . '\MigrateCommentVariableEntityFormDisplayTest',
+      __NAMESPACE__ . '\MigrateCommentVariableFieldTest',
+      __NAMESPACE__ . '\MigrateCommentVariableInstanceTest',
       __NAMESPACE__ . '\MigrateContactCategoryTest',
       __NAMESPACE__ . '\MigrateContactConfigsTest',
       __NAMESPACE__ . '\MigrateBlockContentTest',