[Security] Fix http form authentication entry point

src/Symfony/Component/Security/Http/EntryPoint/FormAuthenticationEntryPoint.php

@@ -51,7 +51,7 @@ class FormAuthenticationEntryPoint implements AuthenticationEntryPointInterface
     public function start(Request $request, AuthenticationException $authException = null)
     {
         if ($this->useForward) {
-            $path = $this->httpUtils->createRequest($request, $this->loginPath);
+            $subRequest = $this->httpUtils->createRequest($request, $this->loginPath);
 
             return $this->httpKernel->handle($subRequest, HttpKernelInterface::SUB_REQUEST);
         }

tests/Symfony/Tests/Component/Security/Http/EntryPoint/FormAuthenticationEntryPointTest.php

@@ -0,0 +1,55 @@
+<?php
+
+namespace Symfony\Tests\Component\Security\Http\EntryPoint;
+
+use Symfony\Component\Security\Http\EntryPoint\FormAuthenticationEntryPoint;
+use Symfony\Component\HttpKernel\HttpKernelInterface;
+
+class FormAuthenticationEntryPointTest extends \PHPUnit_Framework_TestCase
+{
+    public function testStart()
+    {
+        $request = $this->getMock('Symfony\Component\HttpFoundation\Request', array(), array(), '', false, false);
+        $response = $this->getMock('Symfony\Component\HttpFoundation\Response');
+
+        $httpKernel = $this->getMock('Symfony\Component\HttpKernel\HttpKernelInterface');
+        $httpUtils = $this->getMock('Symfony\Component\Security\Http\HttpUtils');
+        $httpUtils
+            ->expects($this->once())
+            ->method('createRedirectResponse')
+            ->with($this->equalTo($request), $this->equalTo('/the/login/path'))
+            ->will($this->returnValue($response))
+        ;
+
+        $entryPoint = new FormAuthenticationEntryPoint($httpKernel, $httpUtils, '/the/login/path', false);
+
+        $this->assertEquals($response, $entryPoint->start($request));
+    }
+
+    public function testStartWithUseForward()
+    {
+        $request = $this->getMock('Symfony\Component\HttpFoundation\Request', array(), array(), '', false, false);
+        $subRequest = $this->getMock('Symfony\Component\HttpFoundation\Request', array(), array(), '', false, false);
+        $response = $this->getMock('Symfony\Component\HttpFoundation\Response');
+
+        $httpUtils = $this->getMock('Symfony\Component\Security\Http\HttpUtils');
+        $httpUtils
+            ->expects($this->once())
+            ->method('createRequest')
+            ->with($this->equalTo($request), $this->equalTo('/the/login/path'))
+            ->will($this->returnValue($subRequest))
+        ;
+
+        $httpKernel = $this->getMock('Symfony\Component\HttpKernel\HttpKernelInterface');
+        $httpKernel
+            ->expects($this->once())
+            ->method('handle')
+            ->with($this->equalTo($request), $this->equalTo(HttpKernelInterface::SUB_REQUEST))
+            ->will($this->returnValue($response))
+        ;
+
+        $entryPoint = new FormAuthenticationEntryPoint($httpKernel, $httpUtils, '/the/login/path', true);
+
+        $this->assertEquals($response, $entryPoint->start($request));
+    }
+}