diff --git a/core/modules/ckeditor/src/Tests/CKEditorLoadingTest.php b/core/modules/ckeditor/src/Tests/CKEditorLoadingTest.php
index 6efe647..200f861 100644
--- a/core/modules/ckeditor/src/Tests/CKEditorLoadingTest.php
+++ b/core/modules/ckeditor/src/Tests/CKEditorLoadingTest.php
@@ -158,7 +158,7 @@ function testLoading() {
   /**
    * Tests presence of essential configuration even without Internal's buttons.
    */
-  protected function testLoadingWithoutInternalButtons() {
+  public function testLoadingWithoutInternalButtons() {
     // Change the CKEditor text editor configuration to only have link buttons.
     // This means:
     // - 0 buttons are from \Drupal\ckeditor\Plugin\CKEditorPlugin\Internal
diff --git a/core/modules/migrate_drupal_ui/src/Tests/MigrateAccessTest.php b/core/modules/migrate_drupal_ui/src/Tests/MigrateAccessTest.php
index 2401d86..04f2048 100644
--- a/core/modules/migrate_drupal_ui/src/Tests/MigrateAccessTest.php
+++ b/core/modules/migrate_drupal_ui/src/Tests/MigrateAccessTest.php
@@ -21,7 +21,7 @@ class MigrateAccessTest extends WebTestBase {
   /**
    * Tests that only user 1 can access the migrate UI.
    */
-  protected function testAccess() {
+  public function testAccess() {
     $this->drupalLogin($this->rootUser);
     $this->drupalGet('upgrade');
     $this->assertResponse(200);
diff --git a/core/modules/migrate_drupal_ui/src/Tests/MigrateUpgradeTestBase.php b/core/modules/migrate_drupal_ui/src/Tests/MigrateUpgradeTestBase.php
index 8a09888..85a9e79 100644
--- a/core/modules/migrate_drupal_ui/src/Tests/MigrateUpgradeTestBase.php
+++ b/core/modules/migrate_drupal_ui/src/Tests/MigrateUpgradeTestBase.php
@@ -101,7 +101,7 @@ protected function tearDown() {
   /**
    * Executes all steps of migrations upgrade.
    */
-  protected function testMigrateUpgrade() {
+  public function testMigrateUpgrade() {
     $connection_options = $this->sourceDatabase->getConnectionOptions();
     $this->drupalGet('/upgrade');
     $this->assertText('Upgrade a site by importing it into a clean and empty new install of Drupal 8. You will lose any existing configuration once you import your site into it. See the online documentation for Drupal site upgrades for more detailed information.');
diff --git a/core/modules/migrate_drupal_ui/src/Tests/d6/MigrateUpgrade6Test.php b/core/modules/migrate_drupal_ui/src/Tests/d6/MigrateUpgrade6Test.php
index 50829f0..404f21b 100644
--- a/core/modules/migrate_drupal_ui/src/Tests/d6/MigrateUpgrade6Test.php
+++ b/core/modules/migrate_drupal_ui/src/Tests/d6/MigrateUpgrade6Test.php
@@ -76,7 +76,7 @@ protected function getEntityCounts() {
   /**
    * Executes all steps of migrations upgrade.
    */
-  protected function testMigrateUpgrade() {
+  public function testMigrateUpgrade() {
     parent::testMigrateUpgrade();
 
     // Ensure migrated users can log in.
diff --git a/core/modules/migrate_drupal_ui/src/Tests/d7/MigrateUpgrade7Test.php b/core/modules/migrate_drupal_ui/src/Tests/d7/MigrateUpgrade7Test.php
index 77bc2ab..86f1ca9 100644
--- a/core/modules/migrate_drupal_ui/src/Tests/d7/MigrateUpgrade7Test.php
+++ b/core/modules/migrate_drupal_ui/src/Tests/d7/MigrateUpgrade7Test.php
@@ -77,7 +77,7 @@ protected function getEntityCounts() {
   /**
    * Executes all steps of migrations upgrade.
    */
-  protected function testMigrateUpgrade() {
+  public function testMigrateUpgrade() {
     parent::testMigrateUpgrade();
 
     // Ensure migrated users can log in.
diff --git a/core/modules/rest/src/Tests/Views/StyleSerializerTest.php b/core/modules/rest/src/Tests/Views/StyleSerializerTest.php
index 4c004fc..6e34c83 100644
--- a/core/modules/rest/src/Tests/Views/StyleSerializerTest.php
+++ b/core/modules/rest/src/Tests/Views/StyleSerializerTest.php
@@ -219,7 +219,7 @@ public function testSerializerResponses() {
   /**
    * Verifies site maintenance mode functionality.
    */
-  protected function testSiteMaintenance() {
+  public function testSiteMaintenance() {
     $view = Views::getView('test_serializer_display_field');
     $view->initDisplay();
     $this->executeView($view);
diff --git a/core/modules/system/src/Tests/Pager/PagerTest.php b/core/modules/system/src/Tests/Pager/PagerTest.php
index 4c13c0f..95ad922 100644
--- a/core/modules/system/src/Tests/Pager/PagerTest.php
+++ b/core/modules/system/src/Tests/Pager/PagerTest.php
@@ -67,7 +67,7 @@ function testActiveClass() {
   /**
    * Test proper functioning of the query parameters and the pager cache context.
    */
-  protected function testPagerQueryParametersAndCacheContext() {
+  public function testPagerQueryParametersAndCacheContext() {
     // First page.
     $this->drupalGet('pager-test/query-parameters');
     $this->assertText(t('Pager calls: 0'), 'Initial call to pager shows 0 calls.');
@@ -93,7 +93,7 @@ protected function testPagerQueryParametersAndCacheContext() {
   /**
    * Test proper functioning of multiple pagers.
    */
-  protected function testMultiplePagers() {
+  public function testMultiplePagers() {
     // First page.
     $this->drupalGet('pager-test/multiple-pagers');
 
diff --git a/core/modules/system/src/Tests/System/SiteMaintenanceTest.php b/core/modules/system/src/Tests/System/SiteMaintenanceTest.php
index 84e3492..f11356b 100644
--- a/core/modules/system/src/Tests/System/SiteMaintenanceTest.php
+++ b/core/modules/system/src/Tests/System/SiteMaintenanceTest.php
@@ -38,7 +38,7 @@ protected function setUp() {
   /**
    * Verifies site maintenance mode functionality.
    */
-  protected function testSiteMaintenance() {
+  public function testSiteMaintenance() {
 
     // Verify that permission message is displayed.
     $permission_handler = $this->container->get('user.permissions');
diff --git a/core/modules/taxonomy/src/Tests/TermTranslationTest.php b/core/modules/taxonomy/src/Tests/TermTranslationTest.php
index 91b13b1..f4a1dbc 100644
--- a/core/modules/taxonomy/src/Tests/TermTranslationTest.php
+++ b/core/modules/taxonomy/src/Tests/TermTranslationTest.php
@@ -87,7 +87,7 @@ public function testTranslatedBreadcrumbs() {
   /**
    * Test translation of terms are showed in the node.
    */
-  protected function testTermsTranslation() {
+  public function testTermsTranslation() {
 
     // Set the display of the term reference field on the article content type
     // to "Check boxes/radio buttons".