diff --git a/core/modules/simpletest/lib/Drupal/simpletest/TestBase.php b/core/modules/simpletest/lib/Drupal/simpletest/TestBase.php
index 04e98f1..3e41342 100644
--- a/core/modules/simpletest/lib/Drupal/simpletest/TestBase.php
+++ b/core/modules/simpletest/lib/Drupal/simpletest/TestBase.php
@@ -190,6 +190,30 @@ public function __construct($test_id = NULL) {
   }
 
   /**
+   * Provides meta information about this test case such as test name.
+   *
+   * @return array
+   *   An array of untranslated strings with the following keys:
+   *   - name: describes an overview of what subsystem is tested by the class;
+   *     for example, "User access rules" or "Menu link creation/deletion".
+   *   - description: One sentence describing the test, starting with a verb.
+   *   - group: human-readable name of the module (Node, Statistics), or the
+   *     human-readable name of the Drupal facility tested (e.g. Form API or
+   *     XML-RPC).
+   */
+  public static function getInfo() {
+    // PHP does not allow us to declare this method as abstract public static,
+    // so we simply throw an exception here if this has not been implemented by
+    // a child class.
+    throw new \RuntimeException(__CLASS__ . ': ' . __METHOD__ . ' must be implemented.');
+  }
+
+  /**
+   * Performs setup tasks before each individual test method is run.
+   */
+  abstract protected function setUp();
+
+  /**
    * Checks the matching requirements for Test.
    *
    * @return
@@ -1007,6 +1031,8 @@ protected function rebuildContainer() {
   }
 
   /**
+   * Performs cleanup tasks after each individual test method has been run.
+   *
    * Deletes created files, database tables, and reverts environment changes.
    *
    * This method needs to be invoked for both unit and integration tests.
diff --git a/core/modules/simpletest/simpletest.module b/core/modules/simpletest/simpletest.module
index 4004dd3..5a75b64 100644
--- a/core/modules/simpletest/simpletest.module
+++ b/core/modules/simpletest/simpletest.module
@@ -480,7 +480,14 @@ function simpletest_test_get_all() {
       foreach ($classes as $class) {
         // Test classes need to implement getInfo() to be valid.
         if (class_exists($class) && method_exists($class, 'getInfo')) {
-          $info = call_user_func(array($class, 'getInfo'));
+          try {
+            $info = call_user_func(array($class, 'getInfo'));
+          }
+          catch (\RuntimeException $e) {
+            // A run time exception indicates that this is an abstract base
+            // class, so we skip it.
+            continue;
+          }
 
           // If this test class requires a non-existing module, skip it.
           if (!empty($info['dependencies'])) {