Merge branch '3.2' into 3.3

* 3.2:
  [DI] use assertStringEqualsFile when possible
  [VarDumper] Adapt to php 7.2 changes
  [DI] Fix using private services in expressions
  [Form][TwigBridge] Don't render _method in form_rest() for a child form
  [Form] Static call TimezoneType::getTimezones
  Removed references for non existent validator constraints
  Remove unused mocks/vars
  [DoctrineBridge][PropertyInfo] Added support for Doctrine Embeddables
  [Validator] Fix IbanValidator for ukrainian IBANs

Author: nicolas-grekas

Tests/Command/RouterDebugCommandTest.php

@@ -71,10 +71,6 @@ private function getKernel()
             ->will($this->returnValue($routeCollection))
         ;
 
-        $loader = $this->getMockBuilder('Symfony\Bundle\FrameworkBundle\Routing\DelegatingLoader')
-            ->disableOriginalConstructor()
-            ->getMock();
-
         $container = $this->getMockBuilder('Symfony\Component\DependencyInjection\ContainerInterface')->getMock();
         $container
             ->expects($this->once())

Tests/Command/RouterMatchCommandTest.php

@@ -70,10 +70,6 @@ private function getKernel()
             ->will($this->returnValue($requestContext))
         ;
 
-        $loader = $this->getMockBuilder('Symfony\Bundle\FrameworkBundle\Routing\DelegatingLoader')
-            ->disableOriginalConstructor()
-            ->getMock();
-
         $container = $this->getMockBuilder('Symfony\Component\DependencyInjection\ContainerInterface')->getMock();
         $container
             ->expects($this->atLeastOnce())

Tests/Functional/ConfigDebugCommandTest.php

@@ -61,7 +61,7 @@ public function testParametersValuesAreResolved()
     public function testDumpUndefinedBundleOption()
     {
         $tester = $this->createCommandTester();
-        $ret = $tester->execute(array('name' => 'TestBundle', 'path' => 'foo'));
+        $tester->execute(array('name' => 'TestBundle', 'path' => 'foo'));
 
         $this->assertContains('Unable to find configuration for "test.foo"', $tester->getDisplay());
     }