diff --git a/tests/unit/framework/rbac/ManagerTestCase.php b/tests/unit/framework/rbac/ManagerTestCase.php
index d837f8f..335c05a 100644
--- a/tests/unit/framework/rbac/ManagerTestCase.php
+++ b/tests/unit/framework/rbac/ManagerTestCase.php
@@ -45,6 +45,18 @@ abstract class ManagerTestCase extends TestCase
 
         // todo: check duplication of name
     }
+
+    public function testGetChildren()
+    {
+        $user = $this->auth->createRole('user');
+        $this->auth->add($user);
+        $this->assertCount(0, $this->auth->getChildren($user->name));
+
+        $changeName = $this->auth->createPermission('changeName');
+        $this->auth->add($changeName);
+        $this->auth->addChild($user, $changeName);
+        $this->assertCount(1, $this->auth->getChildren($user->name));
+    }
 /*
     public function testRemove()
     {
diff --git a/tests/unit/framework/rbac/PhpManagerTestCase.php b/tests/unit/framework/rbac/PhpManagerTest.php
similarity index 90%
rename from tests/unit/framework/rbac/PhpManagerTestCase.php
rename to tests/unit/framework/rbac/PhpManagerTest.php
index 9c98b24..561905f 100644
--- a/tests/unit/framework/rbac/PhpManagerTestCase.php
+++ b/tests/unit/framework/rbac/PhpManagerTest.php
@@ -9,7 +9,7 @@ use yii\rbac\PhpManager;
  * @group rbac
  * @property \yii\rbac\PhpManager $auth
  */
-class PhpManagerTestCase extends ManagerTestCase
+class PhpManagerTest extends ManagerTestCase
 {
     protected function setUp()
     {
@@ -32,7 +32,7 @@ class PhpManagerTestCase extends ManagerTestCase
     {
         $this->prepareData();
         $this->auth->save();
-        $this->auth->clearAll();
+        $this->auth->removeAll();
         $this->auth->load();
         // TODO : Check if loaded and saved data are the same.
     }