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diff --git a/vendor/twig/twig/test/Twig/Tests/Extension/SandboxTest.php b/vendor/twig/twig/test/Twig/Tests/Extension/SandboxTest.php
new file mode 100644
index 000000000..0b2158269
--- /dev/null
+++ b/vendor/twig/twig/test/Twig/Tests/Extension/SandboxTest.php
@@ -0,0 +1,304 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+class Twig_Tests_Extension_SandboxTest extends PHPUnit_Framework_TestCase
+{
+    protected static $params;
+    protected static $templates;
+
+    protected function setUp()
+    {
+        self::$params = array(
+            'name' => 'Fabien',
+            'obj' => new FooObject(),
+            'arr' => array('obj' => new FooObject()),
+        );
+
+        self::$templates = array(
+            '1_basic1' => '{{ obj.foo }}',
+            '1_basic2' => '{{ name|upper }}',
+            '1_basic3' => '{% if name %}foo{% endif %}',
+            '1_basic4' => '{{ obj.bar }}',
+            '1_basic5' => '{{ obj }}',
+            '1_basic6' => '{{ arr.obj }}',
+            '1_basic7' => '{{ cycle(["foo","bar"], 1) }}',
+            '1_basic8' => '{{ obj.getfoobar }}{{ obj.getFooBar }}',
+            '1_basic9' => '{{ obj.foobar }}{{ obj.fooBar }}',
+            '1_basic' => '{% if obj.foo %}{{ obj.foo|upper }}{% endif %}',
+            '1_layout' => '{% block content %}{% endblock %}',
+            '1_child' => "{% extends \"1_layout\" %}\n{% block content %}\n{{ \"a\"|json_encode }}\n{% endblock %}",
+            '1_include' => '{{ include("1_basic1", sandboxed=true) }}',
+        );
+    }
+
+    /**
+     * @expectedException        Twig_Sandbox_SecurityError
+     * @expectedExceptionMessage Filter "json_encode" is not allowed in "1_child" at line 3.
+     */
+    public function testSandboxWithInheritance()
+    {
+        $twig = $this->getEnvironment(true, array(), self::$templates, array('block'));
+        $twig->loadTemplate('1_child')->render(array());
+    }
+
+    public function testSandboxGloballySet()
+    {
+        $twig = $this->getEnvironment(false, array(), self::$templates);
+        $this->assertEquals('FOO', $twig->loadTemplate('1_basic')->render(self::$params), 'Sandbox does nothing if it is disabled globally');
+    }
+
+    public function testSandboxUnallowedMethodAccessor()
+    {
+        $twig = $this->getEnvironment(true, array(), self::$templates);
+        try {
+            $twig->loadTemplate('1_basic1')->render(self::$params);
+            $this->fail('Sandbox throws a SecurityError exception if an unallowed method is called');
+        } catch (Twig_Sandbox_SecurityError $e) {
+            $this->assertInstanceOf('Twig_Sandbox_SecurityNotAllowedMethodError', $e, 'Exception should be an instance of Twig_Sandbox_SecurityNotAllowedMethodError');
+            $this->assertEquals('FooObject', $e->getClassName(), 'Exception should be raised on the "FooObject" class');
+            $this->assertEquals('foo', $e->getMethodName(), 'Exception should be raised on the "foo" method');
+        }
+    }
+
+    public function testSandboxUnallowedFilter()
+    {
+        $twig = $this->getEnvironment(true, array(), self::$templates);
+        try {
+            $twig->loadTemplate('1_basic2')->render(self::$params);
+            $this->fail('Sandbox throws a SecurityError exception if an unallowed filter is called');
+        } catch (Twig_Sandbox_SecurityError $e) {
+            $this->assertInstanceOf('Twig_Sandbox_SecurityNotAllowedFilterError', $e, 'Exception should be an instance of Twig_Sandbox_SecurityNotAllowedFilterError');
+            $this->assertEquals('upper', $e->getFilterName(), 'Exception should be raised on the "upper" filter');
+        }
+    }
+
+    public function testSandboxUnallowedTag()
+    {
+        $twig = $this->getEnvironment(true, array(), self::$templates);
+        try {
+            $twig->loadTemplate('1_basic3')->render(self::$params);
+            $this->fail('Sandbox throws a SecurityError exception if an unallowed tag is used in the template');
+        } catch (Twig_Sandbox_SecurityError $e) {
+            $this->assertInstanceOf('Twig_Sandbox_SecurityNotAllowedTagError', $e, 'Exception should be an instance of Twig_Sandbox_SecurityNotAllowedTagError');
+            $this->assertEquals('if', $e->getTagName(), 'Exception should be raised on the "if" tag');
+        }
+    }
+
+    public function testSandboxUnallowedProperty()
+    {
+        $twig = $this->getEnvironment(true, array(), self::$templates);
+        try {
+            $twig->loadTemplate('1_basic4')->render(self::$params);
+            $this->fail('Sandbox throws a SecurityError exception if an unallowed property is called in the template');
+        } catch (Twig_Sandbox_SecurityError $e) {
+            $this->assertInstanceOf('Twig_Sandbox_SecurityNotAllowedPropertyError', $e, 'Exception should be an instance of Twig_Sandbox_SecurityNotAllowedPropertyError');
+            $this->assertEquals('FooObject', $e->getClassName(), 'Exception should be raised on the "FooObject" class');
+            $this->assertEquals('bar', $e->getPropertyName(), 'Exception should be raised on the "bar" property');
+        }
+    }
+
+    public function testSandboxUnallowedToString()
+    {
+        $twig = $this->getEnvironment(true, array(), self::$templates);
+        try {
+            $twig->loadTemplate('1_basic5')->render(self::$params);
+            $this->fail('Sandbox throws a SecurityError exception if an unallowed method (__toString()) is called in the template');
+        } catch (Twig_Sandbox_SecurityError $e) {
+            $this->assertInstanceOf('Twig_Sandbox_SecurityNotAllowedMethodError', $e, 'Exception should be an instance of Twig_Sandbox_SecurityNotAllowedMethodError');
+            $this->assertEquals('FooObject', $e->getClassName(), 'Exception should be raised on the "FooObject" class');
+            $this->assertEquals('__tostring', $e->getMethodName(), 'Exception should be raised on the "__toString" method');
+        }
+    }
+
+    public function testSandboxUnallowedToStringArray()
+    {
+        $twig = $this->getEnvironment(true, array(), self::$templates);
+        try {
+            $twig->loadTemplate('1_basic6')->render(self::$params);
+            $this->fail('Sandbox throws a SecurityError exception if an unallowed method (__toString()) is called in the template');
+        } catch (Twig_Sandbox_SecurityError $e) {
+            $this->assertInstanceOf('Twig_Sandbox_SecurityNotAllowedMethodError', $e, 'Exception should be an instance of Twig_Sandbox_SecurityNotAllowedMethodError');
+            $this->assertEquals('FooObject', $e->getClassName(), 'Exception should be raised on the "FooObject" class');
+            $this->assertEquals('__tostring', $e->getMethodName(), 'Exception should be raised on the "__toString" method');
+        }
+    }
+
+    public function testSandboxUnallowedFunction()
+    {
+        $twig = $this->getEnvironment(true, array(), self::$templates);
+        try {
+            $twig->loadTemplate('1_basic7')->render(self::$params);
+            $this->fail('Sandbox throws a SecurityError exception if an unallowed function is called in the template');
+        } catch (Twig_Sandbox_SecurityError $e) {
+            $this->assertInstanceOf('Twig_Sandbox_SecurityNotAllowedFunctionError', $e, 'Exception should be an instance of Twig_Sandbox_SecurityNotAllowedFunctionError');
+            $this->assertEquals('cycle', $e->getFunctionName(), 'Exception should be raised on the "cycle" function');
+        }
+    }
+
+    public function testSandboxAllowMethodFoo()
+    {
+        $twig = $this->getEnvironment(true, array(), self::$templates, array(), array(), array('FooObject' => 'foo'));
+        FooObject::reset();
+        $this->assertEquals('foo', $twig->loadTemplate('1_basic1')->render(self::$params), 'Sandbox allow some methods');
+        $this->assertEquals(1, FooObject::$called['foo'], 'Sandbox only calls method once');
+    }
+
+    public function testSandboxAllowMethodToString()
+    {
+        $twig = $this->getEnvironment(true, array(), self::$templates, array(), array(), array('FooObject' => '__toString'));
+        FooObject::reset();
+        $this->assertEquals('foo', $twig->loadTemplate('1_basic5')->render(self::$params), 'Sandbox allow some methods');
+        $this->assertEquals(1, FooObject::$called['__toString'], 'Sandbox only calls method once');
+    }
+
+    public function testSandboxAllowMethodToStringDisabled()
+    {
+        $twig = $this->getEnvironment(false, array(), self::$templates);
+        FooObject::reset();
+        $this->assertEquals('foo', $twig->loadTemplate('1_basic5')->render(self::$params), 'Sandbox allows __toString when sandbox disabled');
+        $this->assertEquals(1, FooObject::$called['__toString'], 'Sandbox only calls method once');
+    }
+
+    public function testSandboxAllowFilter()
+    {
+        $twig = $this->getEnvironment(true, array(), self::$templates, array(), array('upper'));
+        $this->assertEquals('FABIEN', $twig->loadTemplate('1_basic2')->render(self::$params), 'Sandbox allow some filters');
+    }
+
+    public function testSandboxAllowTag()
+    {
+        $twig = $this->getEnvironment(true, array(), self::$templates, array('if'));
+        $this->assertEquals('foo', $twig->loadTemplate('1_basic3')->render(self::$params), 'Sandbox allow some tags');
+    }
+
+    public function testSandboxAllowProperty()
+    {
+        $twig = $this->getEnvironment(true, array(), self::$templates, array(), array(), array(), array('FooObject' => 'bar'));
+        $this->assertEquals('bar', $twig->loadTemplate('1_basic4')->render(self::$params), 'Sandbox allow some properties');
+    }
+
+    public function testSandboxAllowFunction()
+    {
+        $twig = $this->getEnvironment(true, array(), self::$templates, array(), array(), array(), array(), array('cycle'));
+        $this->assertEquals('bar', $twig->loadTemplate('1_basic7')->render(self::$params), 'Sandbox allow some functions');
+    }
+
+    public function testSandboxAllowFunctionsCaseInsensitive()
+    {
+        foreach (array('getfoobar', 'getFoobar', 'getFooBar') as $name) {
+            $twig = $this->getEnvironment(true, array(), self::$templates, array(), array(), array('FooObject' => $name));
+            FooObject::reset();
+            $this->assertEquals('foobarfoobar', $twig->loadTemplate('1_basic8')->render(self::$params), 'Sandbox allow methods in a case-insensitive way');
+            $this->assertEquals(2, FooObject::$called['getFooBar'], 'Sandbox only calls method once');
+
+            $this->assertEquals('foobarfoobar', $twig->loadTemplate('1_basic9')->render(self::$params), 'Sandbox allow methods via shortcut names (ie. without get/set)');
+        }
+    }
+
+    public function testSandboxLocallySetForAnInclude()
+    {
+        self::$templates = array(
+            '2_basic' => '{{ obj.foo }}{% include "2_included" %}{{ obj.foo }}',
+            '2_included' => '{% if obj.foo %}{{ obj.foo|upper }}{% endif %}',
+        );
+
+        $twig = $this->getEnvironment(false, array(), self::$templates);
+        $this->assertEquals('fooFOOfoo', $twig->loadTemplate('2_basic')->render(self::$params), 'Sandbox does nothing if disabled globally and sandboxed not used for the include');
+
+        self::$templates = array(
+            '3_basic' => '{{ obj.foo }}{% sandbox %}{% include "3_included" %}{% endsandbox %}{{ obj.foo }}',
+            '3_included' => '{% if obj.foo %}{{ obj.foo|upper }}{% endif %}',
+        );
+
+        $twig = $this->getEnvironment(true, array(), self::$templates);
+        try {
+            $twig->loadTemplate('3_basic')->render(self::$params);
+            $this->fail('Sandbox throws a SecurityError exception when the included file is sandboxed');
+        } catch (Twig_Sandbox_SecurityError $e) {
+            $this->assertInstanceOf('Twig_Sandbox_SecurityNotAllowedTagError', $e, 'Exception should be an instance of Twig_Sandbox_SecurityNotAllowedTagError');
+            $this->assertEquals('sandbox', $e->getTagName());
+        }
+    }
+
+    public function testMacrosInASandbox()
+    {
+        $twig = $this->getEnvironment(true, array('autoescape' => 'html'), array('index' => <<<EOF
+{%- import _self as macros %}
+
+{%- macro test(text) %}<p>{{ text }}</p>{% endmacro %}
+
+{{- macros.test('username') }}
+EOF
+        ), array('macro', 'import'), array('escape'));
+
+        $this->assertEquals('<p>username</p>', $twig->loadTemplate('index')->render(array()));
+    }
+
+    public function testSandboxDisabledAfterIncludeFunctionError()
+    {
+        $twig = $this->getEnvironment(false, array(), self::$templates);
+
+        $e = null;
+        try {
+            $twig->loadTemplate('1_include')->render(self::$params);
+        } catch (Throwable $e) {
+        } catch (Exception $e) {
+        }
+        if ($e === null) {
+            $this->fail('An exception should be thrown for this test to be valid.');
+        }
+
+        $this->assertFalse($twig->getExtension('Twig_Extension_Sandbox')->isSandboxed(), 'Sandboxed include() function call should not leave Sandbox enabled when an error occurs.');
+    }
+
+    protected function getEnvironment($sandboxed, $options, $templates, $tags = array(), $filters = array(), $methods = array(), $properties = array(), $functions = array())
+    {
+        $loader = new Twig_Loader_Array($templates);
+        $twig = new Twig_Environment($loader, array_merge(array('debug' => true, 'cache' => false, 'autoescape' => false), $options));
+        $policy = new Twig_Sandbox_SecurityPolicy($tags, $filters, $methods, $properties, $functions);
+        $twig->addExtension(new Twig_Extension_Sandbox($policy, $sandboxed));
+
+        return $twig;
+    }
+}
+
+class FooObject
+{
+    public static $called = array('__toString' => 0, 'foo' => 0, 'getFooBar' => 0);
+
+    public $bar = 'bar';
+
+    public static function reset()
+    {
+        self::$called = array('__toString' => 0, 'foo' => 0, 'getFooBar' => 0);
+    }
+
+    public function __toString()
+    {
+        ++self::$called['__toString'];
+
+        return 'foo';
+    }
+
+    public function foo()
+    {
+        ++self::$called['foo'];
+
+        return 'foo';
+    }
+
+    public function getFooBar()
+    {
+        ++self::$called['getFooBar'];
+
+        return 'foobar';
+    }
+}