Drupal 8.0.0 beta 12. More info: https://www.drupal.org/node/2514176

core/lib/Drupal/Component/Annotation/Reflection/MockFileFinder.php

@@ -0,0 +1,44 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\Component\Annotation\Reflection\MockFileFinder.
+ */
+
+namespace Drupal\Component\Annotation\Reflection;
+
+use Doctrine\Common\Reflection\ClassFinderInterface;
+
+/**
+ * Defines a mock file finder that only returns a single filename.
+ *
+ * This can be used with Doctrine\Common\Reflection\StaticReflectionParser if
+ * the filename is known and inheritance is not a concern (for example, if
+ * only the class annotation is needed).
+ */
+class MockFileFinder implements ClassFinderInterface {
+
+  /**
+   * The only filename this finder ever returns.
+   *
+   * @var string
+   */
+  protected $filename;
+
+  /**
+   * Implements Doctrine\Common\Reflection\ClassFinderInterface::findFile().
+   */
+  public function findFile($class) {
+    return $this->filename;
+  }
+
+  /**
+   * Creates new mock file finder objects.
+   */
+  static public function create($filename) {
+    $object = new static();
+    $object->filename = $filename;
+    return $object;
+  }
+
+}