Issue #1373634 by sun: Fixed Installation profile is not installed and not...

Issue #1373634 by sun: Fixed Installation profile is not installed and not registered as module, unless identical to parent site.

core/modules/simpletest/drupal_web_test_case.php

@@ -1355,6 +1355,13 @@ protected function setUp() {
     $test_info['test_run_id'] = $this->databasePrefix;
     $test_info['in_child_site'] = FALSE;
 
+    // Preset the 'install_profile' system variable, so the first call into
+    // system_rebuild_module_data() (in drupal_install_system()) will register
+    // the test's profile as a module. Without this, the installation profile of
+    // the parent site (executing the test) is registered, and the test
+    // profile's hook_install() and other hook implementations are never invoked.
+    $conf['install_profile'] = $this->profile;
+
     include_once DRUPAL_ROOT . '/core/includes/install.inc';
     drupal_install_system();