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diff --git a/assets/php/vendor/symfony/http-foundation/Tests/HeaderBagTest.php b/assets/php/vendor/symfony/http-foundation/Tests/HeaderBagTest.php
new file mode 100644
index 0000000..6d19ceb
--- /dev/null
+++ b/assets/php/vendor/symfony/http-foundation/Tests/HeaderBagTest.php
@@ -0,0 +1,205 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\HttpFoundation\Tests;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\HttpFoundation\HeaderBag;
+
+class HeaderBagTest extends TestCase
+{
+    public function testConstructor()
+    {
+        $bag = new HeaderBag(array('foo' => 'bar'));
+        $this->assertTrue($bag->has('foo'));
+    }
+
+    public function testToStringNull()
+    {
+        $bag = new HeaderBag();
+        $this->assertEquals('', $bag->__toString());
+    }
+
+    public function testToStringNotNull()
+    {
+        $bag = new HeaderBag(array('foo' => 'bar'));
+        $this->assertEquals("Foo: bar\r\n", $bag->__toString());
+    }
+
+    public function testKeys()
+    {
+        $bag = new HeaderBag(array('foo' => 'bar'));
+        $keys = $bag->keys();
+        $this->assertEquals('foo', $keys[0]);
+    }
+
+    public function testGetDate()
+    {
+        $bag = new HeaderBag(array('foo' => 'Tue, 4 Sep 2012 20:00:00 +0200'));
+        $headerDate = $bag->getDate('foo');
+        $this->assertInstanceOf('DateTime', $headerDate);
+    }
+
+    /**
+     * @expectedException \RuntimeException
+     */
+    public function testGetDateException()
+    {
+        $bag = new HeaderBag(array('foo' => 'Tue'));
+        $headerDate = $bag->getDate('foo');
+    }
+
+    public function testGetCacheControlHeader()
+    {
+        $bag = new HeaderBag();
+        $bag->addCacheControlDirective('public', '#a');
+        $this->assertTrue($bag->hasCacheControlDirective('public'));
+        $this->assertEquals('#a', $bag->getCacheControlDirective('public'));
+    }
+
+    public function testAll()
+    {
+        $bag = new HeaderBag(array('foo' => 'bar'));
+        $this->assertEquals(array('foo' => array('bar')), $bag->all(), '->all() gets all the input');
+
+        $bag = new HeaderBag(array('FOO' => 'BAR'));
+        $this->assertEquals(array('foo' => array('BAR')), $bag->all(), '->all() gets all the input key are lower case');
+    }
+
+    public function testReplace()
+    {
+        $bag = new HeaderBag(array('foo' => 'bar'));
+
+        $bag->replace(array('NOPE' => 'BAR'));
+        $this->assertEquals(array('nope' => array('BAR')), $bag->all(), '->replace() replaces the input with the argument');
+        $this->assertFalse($bag->has('foo'), '->replace() overrides previously set the input');
+    }
+
+    public function testGet()
+    {
+        $bag = new HeaderBag(array('foo' => 'bar', 'fuzz' => 'bizz'));
+        $this->assertEquals('bar', $bag->get('foo'), '->get return current value');
+        $this->assertEquals('bar', $bag->get('FoO'), '->get key in case insensitive');
+        $this->assertEquals(array('bar'), $bag->get('foo', 'nope', false), '->get return the value as array');
+
+        // defaults
+        $this->assertNull($bag->get('none'), '->get unknown values returns null');
+        $this->assertEquals('default', $bag->get('none', 'default'), '->get unknown values returns default');
+        $this->assertEquals(array('default'), $bag->get('none', 'default', false), '->get unknown values returns default as array');
+
+        $bag->set('foo', 'bor', false);
+        $this->assertEquals('bar', $bag->get('foo'), '->get return first value');
+        $this->assertEquals(array('bar', 'bor'), $bag->get('foo', 'nope', false), '->get return all values as array');
+    }
+
+    public function testSetAssociativeArray()
+    {
+        $bag = new HeaderBag();
+        $bag->set('foo', array('bad-assoc-index' => 'value'));
+        $this->assertSame('value', $bag->get('foo'));
+        $this->assertEquals(array('value'), $bag->get('foo', 'nope', false), 'assoc indices of multi-valued headers are ignored');
+    }
+
+    public function testContains()
+    {
+        $bag = new HeaderBag(array('foo' => 'bar', 'fuzz' => 'bizz'));
+        $this->assertTrue($bag->contains('foo', 'bar'), '->contains first value');
+        $this->assertTrue($bag->contains('fuzz', 'bizz'), '->contains second value');
+        $this->assertFalse($bag->contains('nope', 'nope'), '->contains unknown value');
+        $this->assertFalse($bag->contains('foo', 'nope'), '->contains unknown value');
+
+        // Multiple values
+        $bag->set('foo', 'bor', false);
+        $this->assertTrue($bag->contains('foo', 'bar'), '->contains first value');
+        $this->assertTrue($bag->contains('foo', 'bor'), '->contains second value');
+        $this->assertFalse($bag->contains('foo', 'nope'), '->contains unknown value');
+    }
+
+    public function testCacheControlDirectiveAccessors()
+    {
+        $bag = new HeaderBag();
+        $bag->addCacheControlDirective('public');
+
+        $this->assertTrue($bag->hasCacheControlDirective('public'));
+        $this->assertTrue($bag->getCacheControlDirective('public'));
+        $this->assertEquals('public', $bag->get('cache-control'));
+
+        $bag->addCacheControlDirective('max-age', 10);
+        $this->assertTrue($bag->hasCacheControlDirective('max-age'));
+        $this->assertEquals(10, $bag->getCacheControlDirective('max-age'));
+        $this->assertEquals('max-age=10, public', $bag->get('cache-control'));
+
+        $bag->removeCacheControlDirective('max-age');
+        $this->assertFalse($bag->hasCacheControlDirective('max-age'));
+    }
+
+    public function testCacheControlDirectiveParsing()
+    {
+        $bag = new HeaderBag(array('cache-control' => 'public, max-age=10'));
+        $this->assertTrue($bag->hasCacheControlDirective('public'));
+        $this->assertTrue($bag->getCacheControlDirective('public'));
+
+        $this->assertTrue($bag->hasCacheControlDirective('max-age'));
+        $this->assertEquals(10, $bag->getCacheControlDirective('max-age'));
+
+        $bag->addCacheControlDirective('s-maxage', 100);
+        $this->assertEquals('max-age=10, public, s-maxage=100', $bag->get('cache-control'));
+    }
+
+    public function testCacheControlDirectiveParsingQuotedZero()
+    {
+        $bag = new HeaderBag(array('cache-control' => 'max-age="0"'));
+        $this->assertTrue($bag->hasCacheControlDirective('max-age'));
+        $this->assertEquals(0, $bag->getCacheControlDirective('max-age'));
+    }
+
+    public function testCacheControlDirectiveOverrideWithReplace()
+    {
+        $bag = new HeaderBag(array('cache-control' => 'private, max-age=100'));
+        $bag->replace(array('cache-control' => 'public, max-age=10'));
+        $this->assertTrue($bag->hasCacheControlDirective('public'));
+        $this->assertTrue($bag->getCacheControlDirective('public'));
+
+        $this->assertTrue($bag->hasCacheControlDirective('max-age'));
+        $this->assertEquals(10, $bag->getCacheControlDirective('max-age'));
+    }
+
+    public function testCacheControlClone()
+    {
+        $headers = array('foo' => 'bar');
+        $bag1 = new HeaderBag($headers);
+        $bag2 = new HeaderBag($bag1->all());
+
+        $this->assertEquals($bag1->all(), $bag2->all());
+    }
+
+    public function testGetIterator()
+    {
+        $headers = array('foo' => 'bar', 'hello' => 'world', 'third' => 'charm');
+        $headerBag = new HeaderBag($headers);
+
+        $i = 0;
+        foreach ($headerBag as $key => $val) {
+            ++$i;
+            $this->assertEquals(array($headers[$key]), $val);
+        }
+
+        $this->assertEquals(count($headers), $i);
+    }
+
+    public function testCount()
+    {
+        $headers = array('foo' => 'bar', 'HELLO' => 'WORLD');
+        $headerBag = new HeaderBag($headers);
+
+        $this->assertCount(count($headers), $headerBag);
+    }
+}