make QueryBuilder::getAllAliases public

lib/Doctrine/ORM/QueryBuilder.php

@@ -473,7 +473,7 @@ class QueryBuilder
      * </code>
      * @return array
      */
-    private function getAllAliases() {
+    public function getAllAliases() {
         return array_merge($this->getRootAliases(),array_keys($this->joinRootAliases));
     }
 

tests/Doctrine/Tests/ORM/QueryBuilderTest.php

@@ -1120,4 +1120,26 @@ class QueryBuilderTest extends \Doctrine\Tests\OrmTestCase
 
         $this->assertEquals($dql, $dql2);
     }
+
+    public function testGetAllAliasesWithNoJoins()
+    {
+        $qb = $this->_em->createQueryBuilder();
+        $qb->select('u')->from('Doctrine\Tests\Models\CMS\CmsUser', 'u');
+
+        $aliases = $qb->getAllAliases();
+
+        $this->assertEquals(['u'], $aliases);
+    }
+
+    public function testGetAllAliasesWithJoins()
+    {
+        $qb = $this->_em->createQueryBuilder()
+            ->select('u')
+            ->from('Doctrine\Tests\Models\CMS\CmsUser', 'u')
+            ->join('u.groups', 'g');
+
+        $aliases = $qb->getAllAliases();
+
+        $this->assertEquals(['u', 'g'], $aliases);
+    }
 }