Drupal Web Test Modifications - only test class requirements

diff --git a/modules/simpletest/drupal_web_test_case.php b/modules/simpletest/drupal_web_test_case.php
index b2a7bf1..1c8b45f 100644
--- a/modules/simpletest/drupal_web_test_case.php
+++ b/modules/simpletest/drupal_web_test_case.php
@@ -84,6 +84,13 @@ abstract class DrupalTestCase {
   }

   /**
+   * Check for access to the test.
+   */
+  public function checkRequirements() {
+    return TRUE;
+  }
+
+  /**
    * Internal helper: stores the assert.
    *
    * @param $status
@@ -461,29 +468,43 @@ abstract class DrupalTestCase {
     if ($methods) {
       $class_methods = array_intersect($class_methods, $methods);
     }
-    foreach ($class_methods as $method) {
-      // If the current method starts with "test", run it - it's a test.
-      if (strtolower(substr($method, 0, 4)) == 'test') {
-        // Insert a fail record. This will be deleted on completion to ensure
-        // that testing completed.
-        $method_info = new ReflectionMethod($class, $method);
-        $caller = array(
-          'file' => $method_info->getFileName(),
-          'line' => $method_info->getStartLine(),
-          'function' => $class . '->' . $method . '()',
-        );
-        $completion_check_id = DrupalTestCase::insertAssert($this->testId, $class, FALSE, t('The test did not complete due to a fatal error.'), 'Completion check', $caller);
-        $this->setUp();
-        try {
-          $this->$method();
-          // Finish up.
-        }
-        catch (Exception $e) {
-          $this->exceptionHandler($e);
+    $access = $this->checkRequirements();
+    if ($access !== TRUE && isset($access['errors']) && count($access['errors']) > 0) {
+      $error_object = new ReflectionObject($this);
+      $caller = array(
+        'file' => $error_object->getFileName(),
+        'line' => 0,
+        'function' => 'n/a',
+      );
+      foreach ($access['errors'] as $error) {
+        DrupalTestCase::insertAssert($this->testId, $class, FALSE, $error, 'Requirements check', $caller);
+      }
+    }
+    else {
+      foreach ($class_methods as $method) {
+        // If the current method starts with "test", run it - it's a test.
+        if (strtolower(substr($method, 0, 4)) == 'test') {
+          // Insert a fail record. This will be deleted on completion to ensure
+          // that testing completed.
+          $method_info = new ReflectionMethod($class, $method);
+          $caller = array(
+            'file' => $method_info->getFileName(),
+            'line' => $method_info->getStartLine(),
+            'function' => $class . '->' . $method . '()',
+          );
+          $completion_check_id = DrupalTestCase::insertAssert($this->testId, $class, FALSE, t('The test did not complete due to a fatal error.'), 'Completion check', $caller);
+          $this->setUp();
+          try {
+            $this->$method();
+            // Finish up.
+          }
+          catch (Exception $e) {
+            $this->exceptionHandler($e);
+          }
+          $this->tearDown();
+          // Remove the completion check record.
+          DrupalTestCase::deleteAssert($completion_check_id);
         }
-        $this->tearDown();
-        // Remove the completion check record.
-        DrupalTestCase::deleteAssert($completion_check_id);
       }
     }
     // Clear out the error messages and restore error handler.