only in patch2:
unchanged:
--- a/core/modules/simpletest/src/TestDiscovery.php
+++ b/core/modules/simpletest/src/TestDiscovery.php
@@ -105,6 +105,7 @@ public function registerTestNamespaces() {
     $this->testNamespaces['Drupal\\Tests\\'] = [$this->root . '/core/tests/Drupal/Tests'];
     $this->testNamespaces['Drupal\\KernelTests\\'] = [$this->root . '/core/tests/Drupal/KernelTests'];
     $this->testNamespaces['Drupal\\FunctionalTests\\'] = [$this->root . '/core/tests/Drupal/FunctionalTests'];
+    $this->testNamespaces['Drupal\\FunctionalJavascriptTests\\'] = [$this->root . '/core/tests/Drupal/FunctionalJavascriptTests'];
 
     $this->availableExtensions = array();
     foreach ($this->getExtensions() as $name => $extension) {
@@ -123,6 +124,7 @@ public function registerTestNamespaces() {
       $this->testNamespaces["Drupal\\Tests\\$name\\Unit\\"][] = "$base_path/tests/src/Unit";
       $this->testNamespaces["Drupal\\Tests\\$name\\Kernel\\"][] = "$base_path/tests/src/Kernel";
       $this->testNamespaces["Drupal\\Tests\\$name\\Functional\\"][] = "$base_path/tests/src/Functional";
+      $this->testNamespaces["Drupal\\Tests\\$name\\FunctionalJavascript\\"][] = "$base_path/tests/src/FunctionalJavascript";
     }
 
     foreach ($this->testNamespaces as $prefix => $paths) {
only in patch2:
unchanged:
--- a/core/tests/bootstrap.php
+++ b/core/tests/bootstrap.php
@@ -104,6 +104,8 @@ function drupal_phpunit_populate_class_loader() {
   // Start with classes in known locations.
   $loader->add('Drupal\\Tests', __DIR__);
   $loader->add('Drupal\\KernelTests', __DIR__);
+  $loader->add('Drupal\\FunctionalTests', __DIR__);
+  $loader->add('Drupal\\FunctionalJavascriptTests', __DIR__);
 
   if (!isset($GLOBALS['namespaces'])) {
     // Scan for arbitrary extension namespaces from core and contrib.