Added UserLoaderInterface for loading users through Doctrine.

src/Symfony/Bridge/Doctrine/Security/User/EntityUserProvider.php

@@ -54,8 +54,12 @@ class EntityUserProvider implements UserProviderInterface
         if (null !== $this->property) {
             $user = $this->repository->findOneBy(array($this->property => $username));
         } else {
-            if (!$this->repository instanceof UserProviderInterface) {
-                throw new \InvalidArgumentException(sprintf('The Doctrine repository "%s" must implement UserProviderInterface.', get_class($this->repository)));
+            if (!$this->repository instanceof UserLoaderInterface) {
+                if (!$this->repository instanceof UserProviderInterface) {
+                    throw new \InvalidArgumentException(sprintf('The Doctrine repository "%s" must implement Symfony\Bridge\Doctrine\Security\User\UserLoaderInterface.', get_class($this->repository)));
+                }
+
+                @trigger_error('Implementing loadUserByUsername from Symfony\Component\Security\Core\User\UserProviderInterface is deprecated since version 2.8 and will be removed in 3.0. Implement the Symfony\Bridge\Doctrine\Security\User\UserLoaderInterface instead.', E_USER_DEPRECATED);
             }
 
             $user = $this->repository->loadUserByUsername($username);

src/Symfony/Bridge/Doctrine/Security/User/UserLoaderInterface.php

@@ -0,0 +1,39 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bridge\Doctrine\Security\User;
+
+use Symfony\Component\Security\Core\User\UserInterface;
+
+/**
+ * Represents a class that loads UserInterface objects from Doctrine source for the authentication system.
+ *
+ * This interface is meant to facilitate the loading of a User from Doctrine source using a custom method.
+ * If you want to implement your own logic of retrieving the user from Doctrine your repository should implement this
+ * interface.
+ *
+ * @see UserInterface
+ *
+ * @author Michal Trojanowski <michal@kmt-studio.pl>
+ */
+interface UserLoaderInterface
+{
+    /**
+     * Loads the user for the given username.
+     *
+     * This method must return null if the user is not found.
+     *
+     * @param string $username The username
+     *
+     * @return UserInterface|null
+     */
+    public function loadUserByUsername($username);
+}

src/Symfony/Bridge/Doctrine/Tests/Security/User/EntityUserProviderTest.php

@@ -89,6 +89,39 @@ class EntityUserProviderTest extends \PHPUnit_Framework_TestCase
         $this->assertTrue($provider->supportsClass(get_class($user2)));
     }
 
+    public function testLoadUserByUserNameShouldLoadUserWhenProperInterfaceProvided()
+    {
+        $repository = $this->getMock('\Symfony\Bridge\Doctrine\Security\User\UserLoaderInterface');
+        $repository->expects($this->once())
+            ->method('loadUserByUsername')
+            ->with('name')
+            ->willReturn(
+                $this->getMock('\Symfony\Component\Security\Core\User\UserInterface')
+            );
+
+        $provider = new EntityUserProvider(
+            $this->getManager($this->getObjectManager($repository)),
+            'Symfony\Bridge\Doctrine\Tests\Fixtures\User'
+        );
+
+        $provider->loadUserByUsername('name');
+    }
+
+    /**
+     * @expectedException \InvalidArgumentException
+     */
+    public function testLoadUserByUserNameShouldDeclineInvalidInterface()
+    {
+        $repository = $this->getMock('\Symfony\Component\Security\Core\User\AdvancedUserInterface');
+
+        $provider = new EntityUserProvider(
+            $this->getManager($this->getObjectManager($repository)),
+            'Symfony\Bridge\Doctrine\Tests\Fixtures\User'
+        );
+
+        $provider->loadUserByUsername('name');
+    }
+
     private function getManager($em, $name = null)
     {
         $manager = $this->getMock('Doctrine\Common\Persistence\ManagerRegistry');
@@ -100,6 +133,18 @@ class EntityUserProviderTest extends \PHPUnit_Framework_TestCase
         return $manager;
     }
 
+    private function getObjectManager($repository)
+    {
+        $em = $this->getMockBuilder('\Doctrine\Common\Persistence\ObjectManager')
+            ->setMethods(array('getClassMetadata', 'getRepository'))
+            ->getMockForAbstractClass();
+        $em->expects($this->any())
+            ->method('getRepository')
+            ->willReturn($repository);
+
+        return $em;
+    }
+
     private function createSchema($em)
     {
         $schemaTool = new SchemaTool($em);

src/Symfony/Component/Security/Core/User/UserProviderInterface.php

@@ -43,8 +43,6 @@ interface UserProviderInterface
      *
      * @return UserInterface
      *
-     * @see UsernameNotFoundException
-     *
      * @throws UsernameNotFoundException if the user is not found
      */
     public function loadUserByUsername($username);