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diff --git a/web/modules/contrib/libraries/tests/src/Kernel/ExternalLibrary/TestLibraryFilesStream.php b/web/modules/contrib/libraries/tests/src/Kernel/ExternalLibrary/TestLibraryFilesStream.php
new file mode 100644
index 000000000..ec20647ea
--- /dev/null
+++ b/web/modules/contrib/libraries/tests/src/Kernel/ExternalLibrary/TestLibraryFilesStream.php
@@ -0,0 +1,80 @@
+<?php
+
+namespace Drupal\Tests\libraries\Kernel\ExternalLibrary;
+
+use Drupal\Core\Extension\ModuleHandlerInterface;
+use Drupal\Core\StreamWrapper\LocalStream;
+use Drupal\Core\StringTranslation\StringTranslationTrait;
+use Drupal\Core\StringTranslation\TranslationInterface;
+use Drupal\libraries\StreamWrapper\LocalHiddenStreamTrait;
+use Drupal\libraries\StreamWrapper\PrivateStreamTrait;
+
+/**
+ * Provides a stream wrapper for accessing test library files.
+ */
+class TestLibraryFilesStream extends LocalStream {
+
+  use LocalHiddenStreamTrait;
+  use PrivateStreamTrait;
+  use StringTranslationTrait;
+
+  /**
+   * The module handler.
+   *
+   * @var \Drupal\Core\Extension\ModuleHandlerInterface
+   */
+  protected $moduleHandler;
+
+  /**
+   * The test directory.
+   *
+   * @var string
+   */
+  protected $directory;
+
+  /**
+   * Constructs a stream wrapper for test library files.
+   *
+   * Dependency injection is generally not possible to implement for stream
+   * wrappers, because stream wrappers are initialized before the container is
+   * booted, but this stream wrapper is only registered explicitly from tests
+   * so it is possible here.
+   *
+   * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
+   *   The module handler.
+   * @param \Drupal\Core\StringTranslation\TranslationInterface $string_translation
+   *   The string translation handler.
+   * @param string $directory
+   *   The directory within the Libraries API's tests directory that is to be
+   *   searched for test library files.
+   */
+  public function __construct(ModuleHandlerInterface $module_handler, TranslationInterface $string_translation, $directory) {
+    $this->moduleHandler = $module_handler;
+    $this->directory = (string) $directory;
+
+    $this->setStringTranslation($string_translation);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getName() {
+    $this->t('Test library files');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getDescription() {
+    $this->t('Provides access to test library files.');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getDirectoryPath() {
+    $module_path = $this->moduleHandler->getModule('libraries')->getPath();
+    return $module_path . '/tests/' . $this->directory;
+  }
+
+}