Support custom user checker (FriendsOfSymfony#660)

* Add custom user_checker support

* Adapt tests

* Add changelog

Author: deguif

CHANGELOG-2.0.md

@@ -7,6 +7,7 @@ This changelog references the relevant changes done in 6.0 versions.
 
 * Added `NL` translations [[#631](https://github.com/FriendsOfSymfony/FOSOAuthServerBundle/pull/631)]
 * Added support for Symfony 5.1 and greater [[#658](https://github.com/FriendsOfSymfony/FOSOAuthServerBundle/pull/658)]
+* Added custom user checker support [[#660](https://github.com/FriendsOfSymfony/FOSOAuthServerBundle/pull/660)]
 * Bumped `twig/twig` supported versions to `1.40` for `1.x` and `2.9` for `2.x` [[#652](https://github.com/FriendsOfSymfony/FOSOAuthServerBundle/pull/652)]
 * Dropped support for PHP 7.1 [[#651](https://github.com/FriendsOfSymfony/FOSOAuthServerBundle/pull/651)]
 * Dropped support for Symfony versions anterior to `4.4` [[#648](https://github.com/FriendsOfSymfony/FOSOAuthServerBundle/pull/648)]

DependencyInjection/Security/Factory/OAuthFactory.php

@@ -35,6 +35,7 @@ public function create(ContainerBuilder $container, $id, $config, $userProvider,
         $container
             ->setDefinition($providerId, new ChildDefinition('fos_oauth_server.security.authentication.provider'))
             ->replaceArgument(0, new Reference($userProvider))
+            ->replaceArgument(2, new Reference('security.user_checker.'.$id))
         ;
 
         $listenerId = 'security.authentication.listener.fos_oauth_server.'.$id;

Tests/DependencyInjection/Security/Factory/OAuthFactoryTest.php

@@ -88,10 +88,22 @@ public function testCreate()
         ;
 
         $definition
-            ->expects($this->once())
+            ->expects($this->exactly(2))
             ->method('replaceArgument')
-            ->with(0, new Reference($userProvider))
-            ->willReturn(null)
+            ->withConsecutive(
+                [
+                    0,
+                    new Reference($userProvider),
+                ],
+                [
+                    2,
+                    new Reference('security.user_checker.'.$id),
+                ]
+            )
+            ->willReturnOnConsecutiveCalls(
+                $definition,
+                $definition
+            )
         ;
 
         $this->assertSame([