Merge branch '2.7' into 2.8

* 2.7:
  [ci] Phpunit tests wont run if composer is installed in a wrapper
  [ci] Add version tag in phpunit wrapper to trigger cache-reset on demand
  fix race condition at mkdir (#16258)
  [VarDumper] Fix PHP7 type-hints compat
  [Bridge] [PhpUnit] fixes documentation markup.
  [PropertyAccess] Port of the performance optimization from 2.3
  trigger deprecation warning when using empty_value
  [PropertyAccess] Test access to dynamic properties
  [PropertyAccess] Fix dynamic property accessing.
  [Serializer] GetSetNormalizer shouldn't set/get static methods
  [Serializer] PropertyNormalizer shouldn't set static properties
  JsonDescriptor - encode container params only once

Conflicts:
	src/Symfony/Component/VarDumper/Tests/Caster/ReflectionCasterTest.php

Author: nicolas-grekas

Console/Descriptor/JsonDescriptor.php

@@ -157,7 +157,7 @@ protected function describeContainerParameter($parameter, array $options = array
     {
         $key = isset($options['parameter']) ? $options['parameter'] : '';
 
-        $this->writeData(array($key => $this->formatParameter($parameter)), $options);
+        $this->writeData(array($key => $parameter), $options);
     }
 
     /**

Tests/Console/Descriptor/AbstractDescriptorTest.php

@@ -118,6 +118,7 @@ public function getDescribeContainerParameterTestData()
         $data = $this->getDescriptionTestData(ObjectsProvider::getContainerParameter());
 
         $data[0][] = array('parameter' => 'database_name');
+        $data[1][] = array('parameter' => 'twig.form.resources');
 
         return $data;
     }

Tests/Console/Descriptor/ObjectsProvider.php

@@ -72,9 +72,16 @@ public static function getContainerParameter()
     {
         $builder = new ContainerBuilder();
         $builder->setParameter('database_name', 'symfony');
+        $builder->setParameter('twig.form.resources', array(
+            'bootstrap_3_horizontal_layout.html.twig',
+            'bootstrap_3_layout.html.twig',
+            'form_div_layout.html.twig',
+            'form_table_layout.html.twig',
+        ));
 
         return array(
             'parameter' => $builder,
+            'array_parameter' => $builder,
         );
     }
 

Tests/Fixtures/Descriptor/array_parameter.json

@@ -0,0 +1,3 @@
+{
+  "twig.form.resources": ["bootstrap_3_horizontal_layout.html.twig", "bootstrap_3_layout.html.twig", "form_div_layout.html.twig", "form_table_layout.html.twig"]
+}

Tests/Fixtures/Descriptor/array_parameter.md

@@ -0,0 +1,4 @@
+twig.form.resources
+===================
+
+["bootstrap_3_horizontal_layout.html.twig","bootstrap_3_layo...

Tests/Fixtures/Descriptor/array_parameter.txt

@@ -0,0 +1 @@
+["bootstrap_3_horizontal_layout.html.twig","bootstrap_3_layo...

Tests/Fixtures/Descriptor/array_parameter.xml

@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<parameter key="twig.form.resources">["bootstrap_3_horizontal_layout.html.twig","bootstrap_3_layo...</parameter>