bug #24706 [DependencyInjection] Add the possibility to disable assets via xml (renatomefi)

This PR was merged into the 3.3 branch.

Discussion
----------

[DependencyInjection] Add the possibility to disable assets via xml

| Q             | A
| ------------- | ---
| Branch?       | 3.3
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | no
| License       | MIT
| Doc PR        | no

- When trying to disable the assets using xml configuration I realized it wasn't possible, this patch fixes and tests it
- Also added extra tests since the assets being disabled was being tested on both php and yaml Extension tests

Commits
-------

8579e24 [FrameworkBundle] Allow to disable assets via framework:assets xml configuration

src/Symfony/Bundle/FrameworkBundle/Resources/config/schema/symfony-1.0.xsd

@@ -138,6 +138,7 @@
             <xsd:element name="package" type="package" minOccurs="0" maxOccurs="unbounded" />
         </xsd:sequence>
 
+        <xsd:attribute name="enabled" type="xsd:boolean" />
         <xsd:attribute name="base-path" type="xsd:string" />
         <xsd:attribute name="version-strategy" type="xsd:string" />
         <xsd:attribute name="version" type="xsd:string" />

src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/assets_disabled.php

@@ -0,0 +1,7 @@
+<?php
+
+$container->loadFromExtension('framework', array(
+    'assets' => array(
+        'enabled' => false,
+    ),
+));

src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/xml/assets_disabled.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" ?>
+
+<container xmlns="http://symfony.com/schema/dic/services"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xmlns:framework="http://symfony.com/schema/dic/symfony"
+    xsi:schemaLocation="http://symfony.com/schema/dic/services http://symfony.com/schema/dic/services/services-1.0.xsd
+                        http://symfony.com/schema/dic/symfony http://symfony.com/schema/dic/symfony/symfony-1.0.xsd">
+
+    <framework:config>
+        <framework:assets enabled="false" />
+    </framework:config>
+</container>

src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/yml/assets_disabled.yml

@@ -0,0 +1,3 @@
+framework:
+    assets:
+        enabled: false

src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php

@@ -423,6 +423,13 @@ abstract class FrameworkExtensionTest extends TestCase
         $this->assertEquals('assets.custom_version_strategy', (string) $defaultPackage->getArgument(1));
     }
 
+    public function testAssetsCanBeDisabled()
+    {
+        $container = $this->createContainerFromFile('assets_disabled');
+
+        $this->assertFalse($container->has('templating.helper.assets'), 'The templating.helper.assets helper service is removed when assets are disabled.');
+    }
+
     public function testWebLink()
     {
         $container = $this->createContainerFromFile('web_link');