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diff --git a/assets/php/vendor/symfony/http-foundation/Tests/ResponseTest.php b/assets/php/vendor/symfony/http-foundation/Tests/ResponseTest.php
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+<?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 Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\Response;
+
+/**
+ * @group time-sensitive
+ */
+class ResponseTest extends ResponseTestCase
+{
+    public function testCreate()
+    {
+        $response = Response::create('foo', 301, array('Foo' => 'bar'));
+
+        $this->assertInstanceOf('Symfony\Component\HttpFoundation\Response', $response);
+        $this->assertEquals(301, $response->getStatusCode());
+        $this->assertEquals('bar', $response->headers->get('foo'));
+    }
+
+    public function testToString()
+    {
+        $response = new Response();
+        $response = explode("\r\n", $response);
+        $this->assertEquals('HTTP/1.0 200 OK', $response[0]);
+        $this->assertEquals('Cache-Control: no-cache, private', $response[1]);
+    }
+
+    public function testClone()
+    {
+        $response = new Response();
+        $responseClone = clone $response;
+        $this->assertEquals($response, $responseClone);
+    }
+
+    public function testSendHeaders()
+    {
+        $response = new Response();
+        $headers = $response->sendHeaders();
+        $this->assertObjectHasAttribute('headers', $headers);
+        $this->assertObjectHasAttribute('content', $headers);
+        $this->assertObjectHasAttribute('version', $headers);
+        $this->assertObjectHasAttribute('statusCode', $headers);
+        $this->assertObjectHasAttribute('statusText', $headers);
+        $this->assertObjectHasAttribute('charset', $headers);
+    }
+
+    public function testSend()
+    {
+        $response = new Response();
+        $responseSend = $response->send();
+        $this->assertObjectHasAttribute('headers', $responseSend);
+        $this->assertObjectHasAttribute('content', $responseSend);
+        $this->assertObjectHasAttribute('version', $responseSend);
+        $this->assertObjectHasAttribute('statusCode', $responseSend);
+        $this->assertObjectHasAttribute('statusText', $responseSend);
+        $this->assertObjectHasAttribute('charset', $responseSend);
+    }
+
+    public function testGetCharset()
+    {
+        $response = new Response();
+        $charsetOrigin = 'UTF-8';
+        $response->setCharset($charsetOrigin);
+        $charset = $response->getCharset();
+        $this->assertEquals($charsetOrigin, $charset);
+    }
+
+    public function testIsCacheable()
+    {
+        $response = new Response();
+        $this->assertFalse($response->isCacheable());
+    }
+
+    public function testIsCacheableWithErrorCode()
+    {
+        $response = new Response('', 500);
+        $this->assertFalse($response->isCacheable());
+    }
+
+    public function testIsCacheableWithNoStoreDirective()
+    {
+        $response = new Response();
+        $response->headers->set('cache-control', 'private');
+        $this->assertFalse($response->isCacheable());
+    }
+
+    public function testIsCacheableWithSetTtl()
+    {
+        $response = new Response();
+        $response->setTtl(10);
+        $this->assertTrue($response->isCacheable());
+    }
+
+    public function testMustRevalidate()
+    {
+        $response = new Response();
+        $this->assertFalse($response->mustRevalidate());
+    }
+
+    public function testMustRevalidateWithMustRevalidateCacheControlHeader()
+    {
+        $response = new Response();
+        $response->headers->set('cache-control', 'must-revalidate');
+
+        $this->assertTrue($response->mustRevalidate());
+    }
+
+    public function testMustRevalidateWithProxyRevalidateCacheControlHeader()
+    {
+        $response = new Response();
+        $response->headers->set('cache-control', 'proxy-revalidate');
+
+        $this->assertTrue($response->mustRevalidate());
+    }
+
+    public function testSetNotModified()
+    {
+        $response = new Response();
+        $modified = $response->setNotModified();
+        $this->assertObjectHasAttribute('headers', $modified);
+        $this->assertObjectHasAttribute('content', $modified);
+        $this->assertObjectHasAttribute('version', $modified);
+        $this->assertObjectHasAttribute('statusCode', $modified);
+        $this->assertObjectHasAttribute('statusText', $modified);
+        $this->assertObjectHasAttribute('charset', $modified);
+        $this->assertEquals(304, $modified->getStatusCode());
+    }
+
+    public function testIsSuccessful()
+    {
+        $response = new Response();
+        $this->assertTrue($response->isSuccessful());
+    }
+
+    public function testIsNotModified()
+    {
+        $response = new Response();
+        $modified = $response->isNotModified(new Request());
+        $this->assertFalse($modified);
+    }
+
+    public function testIsNotModifiedNotSafe()
+    {
+        $request = Request::create('/homepage', 'POST');
+
+        $response = new Response();
+        $this->assertFalse($response->isNotModified($request));
+    }
+
+    public function testIsNotModifiedLastModified()
+    {
+        $before = 'Sun, 25 Aug 2013 18:32:31 GMT';
+        $modified = 'Sun, 25 Aug 2013 18:33:31 GMT';
+        $after = 'Sun, 25 Aug 2013 19:33:31 GMT';
+
+        $request = new Request();
+        $request->headers->set('If-Modified-Since', $modified);
+
+        $response = new Response();
+
+        $response->headers->set('Last-Modified', $modified);
+        $this->assertTrue($response->isNotModified($request));
+
+        $response->headers->set('Last-Modified', $before);
+        $this->assertTrue($response->isNotModified($request));
+
+        $response->headers->set('Last-Modified', $after);
+        $this->assertFalse($response->isNotModified($request));
+
+        $response->headers->set('Last-Modified', '');
+        $this->assertFalse($response->isNotModified($request));
+    }
+
+    public function testIsNotModifiedEtag()
+    {
+        $etagOne = 'randomly_generated_etag';
+        $etagTwo = 'randomly_generated_etag_2';
+
+        $request = new Request();
+        $request->headers->set('if_none_match', sprintf('%s, %s, %s', $etagOne, $etagTwo, 'etagThree'));
+
+        $response = new Response();
+
+        $response->headers->set('ETag', $etagOne);
+        $this->assertTrue($response->isNotModified($request));
+
+        $response->headers->set('ETag', $etagTwo);
+        $this->assertTrue($response->isNotModified($request));
+
+        $response->headers->set('ETag', '');
+        $this->assertFalse($response->isNotModified($request));
+    }
+
+    public function testIsNotModifiedLastModifiedAndEtag()
+    {
+        $before = 'Sun, 25 Aug 2013 18:32:31 GMT';
+        $modified = 'Sun, 25 Aug 2013 18:33:31 GMT';
+        $after = 'Sun, 25 Aug 2013 19:33:31 GMT';
+        $etag = 'randomly_generated_etag';
+
+        $request = new Request();
+        $request->headers->set('if_none_match', sprintf('%s, %s', $etag, 'etagThree'));
+        $request->headers->set('If-Modified-Since', $modified);
+
+        $response = new Response();
+
+        $response->headers->set('ETag', $etag);
+        $response->headers->set('Last-Modified', $after);
+        $this->assertFalse($response->isNotModified($request));
+
+        $response->headers->set('ETag', 'non-existent-etag');
+        $response->headers->set('Last-Modified', $before);
+        $this->assertFalse($response->isNotModified($request));
+
+        $response->headers->set('ETag', $etag);
+        $response->headers->set('Last-Modified', $modified);
+        $this->assertTrue($response->isNotModified($request));
+    }
+
+    public function testIsNotModifiedIfModifiedSinceAndEtagWithoutLastModified()
+    {
+        $modified = 'Sun, 25 Aug 2013 18:33:31 GMT';
+        $etag = 'randomly_generated_etag';
+
+        $request = new Request();
+        $request->headers->set('if_none_match', sprintf('%s, %s', $etag, 'etagThree'));
+        $request->headers->set('If-Modified-Since', $modified);
+
+        $response = new Response();
+
+        $response->headers->set('ETag', $etag);
+        $this->assertTrue($response->isNotModified($request));
+
+        $response->headers->set('ETag', 'non-existent-etag');
+        $this->assertFalse($response->isNotModified($request));
+    }
+
+    public function testIsValidateable()
+    {
+        $response = new Response('', 200, array('Last-Modified' => $this->createDateTimeOneHourAgo()->format(DATE_RFC2822)));
+        $this->assertTrue($response->isValidateable(), '->isValidateable() returns true if Last-Modified is present');
+
+        $response = new Response('', 200, array('ETag' => '"12345"'));
+        $this->assertTrue($response->isValidateable(), '->isValidateable() returns true if ETag is present');
+
+        $response = new Response();
+        $this->assertFalse($response->isValidateable(), '->isValidateable() returns false when no validator is present');
+    }
+
+    public function testGetDate()
+    {
+        $oneHourAgo = $this->createDateTimeOneHourAgo();
+        $response = new Response('', 200, array('Date' => $oneHourAgo->format(DATE_RFC2822)));
+        $date = $response->getDate();
+        $this->assertEquals($oneHourAgo->getTimestamp(), $date->getTimestamp(), '->getDate() returns the Date header if present');
+
+        $response = new Response();
+        $date = $response->getDate();
+        $this->assertEquals(time(), $date->getTimestamp(), '->getDate() returns the current Date if no Date header present');
+
+        $response = new Response('', 200, array('Date' => $this->createDateTimeOneHourAgo()->format(DATE_RFC2822)));
+        $now = $this->createDateTimeNow();
+        $response->headers->set('Date', $now->format(DATE_RFC2822));
+        $date = $response->getDate();
+        $this->assertEquals($now->getTimestamp(), $date->getTimestamp(), '->getDate() returns the date when the header has been modified');
+
+        $response = new Response('', 200);
+        $now = $this->createDateTimeNow();
+        $response->headers->remove('Date');
+        $date = $response->getDate();
+        $this->assertEquals($now->getTimestamp(), $date->getTimestamp(), '->getDate() returns the current Date when the header has previously been removed');
+    }
+
+    public function testGetMaxAge()
+    {
+        $response = new Response();
+        $response->headers->set('Cache-Control', 's-maxage=600, max-age=0');
+        $this->assertEquals(600, $response->getMaxAge(), '->getMaxAge() uses s-maxage cache control directive when present');
+
+        $response = new Response();
+        $response->headers->set('Cache-Control', 'max-age=600');
+        $this->assertEquals(600, $response->getMaxAge(), '->getMaxAge() falls back to max-age when no s-maxage directive present');
+
+        $response = new Response();
+        $response->headers->set('Cache-Control', 'must-revalidate');
+        $response->headers->set('Expires', $this->createDateTimeOneHourLater()->format(DATE_RFC2822));
+        $this->assertEquals(3600, $response->getMaxAge(), '->getMaxAge() falls back to Expires when no max-age or s-maxage directive present');
+
+        $response = new Response();
+        $response->headers->set('Cache-Control', 'must-revalidate');
+        $response->headers->set('Expires', -1);
+        $this->assertEquals('Sat, 01 Jan 00 00:00:00 +0000', $response->getExpires()->format(DATE_RFC822));
+
+        $response = new Response();
+        $this->assertNull($response->getMaxAge(), '->getMaxAge() returns null if no freshness information available');
+    }
+
+    public function testSetSharedMaxAge()
+    {
+        $response = new Response();
+        $response->setSharedMaxAge(20);
+
+        $cacheControl = $response->headers->get('Cache-Control');
+        $this->assertEquals('public, s-maxage=20', $cacheControl);
+    }
+
+    public function testIsPrivate()
+    {
+        $response = new Response();
+        $response->headers->set('Cache-Control', 'max-age=100');
+        $response->setPrivate();
+        $this->assertEquals(100, $response->headers->getCacheControlDirective('max-age'), '->isPrivate() adds the private Cache-Control directive when set to true');
+        $this->assertTrue($response->headers->getCacheControlDirective('private'), '->isPrivate() adds the private Cache-Control directive when set to true');
+
+        $response = new Response();
+        $response->headers->set('Cache-Control', 'public, max-age=100');
+        $response->setPrivate();
+        $this->assertEquals(100, $response->headers->getCacheControlDirective('max-age'), '->isPrivate() adds the private Cache-Control directive when set to true');
+        $this->assertTrue($response->headers->getCacheControlDirective('private'), '->isPrivate() adds the private Cache-Control directive when set to true');
+        $this->assertFalse($response->headers->hasCacheControlDirective('public'), '->isPrivate() removes the public Cache-Control directive');
+    }
+
+    public function testExpire()
+    {
+        $response = new Response();
+        $response->headers->set('Cache-Control', 'max-age=100');
+        $response->expire();
+        $this->assertEquals(100, $response->headers->get('Age'), '->expire() sets the Age to max-age when present');
+
+        $response = new Response();
+        $response->headers->set('Cache-Control', 'max-age=100, s-maxage=500');
+        $response->expire();
+        $this->assertEquals(500, $response->headers->get('Age'), '->expire() sets the Age to s-maxage when both max-age and s-maxage are present');
+
+        $response = new Response();
+        $response->headers->set('Cache-Control', 'max-age=5, s-maxage=500');
+        $response->headers->set('Age', '1000');
+        $response->expire();
+        $this->assertEquals(1000, $response->headers->get('Age'), '->expire() does nothing when the response is already stale/expired');
+
+        $response = new Response();
+        $response->expire();
+        $this->assertFalse($response->headers->has('Age'), '->expire() does nothing when the response does not include freshness information');
+
+        $response = new Response();
+        $response->headers->set('Expires', -1);
+        $response->expire();
+        $this->assertNull($response->headers->get('Age'), '->expire() does not set the Age when the response is expired');
+    }
+
+    public function testGetTtl()
+    {
+        $response = new Response();
+        $this->assertNull($response->getTtl(), '->getTtl() returns null when no Expires or Cache-Control headers are present');
+
+        $response = new Response();
+        $response->headers->set('Expires', $this->createDateTimeOneHourLater()->format(DATE_RFC2822));
+        $this->assertEquals(3600, $response->getTtl(), '->getTtl() uses the Expires header when no max-age is present');
+
+        $response = new Response();
+        $response->headers->set('Expires', $this->createDateTimeOneHourAgo()->format(DATE_RFC2822));
+        $this->assertLessThan(0, $response->getTtl(), '->getTtl() returns negative values when Expires is in past');
+
+        $response = new Response();
+        $response->headers->set('Expires', $response->getDate()->format(DATE_RFC2822));
+        $response->headers->set('Age', 0);
+        $this->assertSame(0, $response->getTtl(), '->getTtl() correctly handles zero');
+
+        $response = new Response();
+        $response->headers->set('Cache-Control', 'max-age=60');
+        $this->assertEquals(60, $response->getTtl(), '->getTtl() uses Cache-Control max-age when present');
+    }
+
+    public function testSetClientTtl()
+    {
+        $response = new Response();
+        $response->setClientTtl(10);
+
+        $this->assertEquals($response->getMaxAge(), $response->getAge() + 10);
+    }
+
+    public function testGetSetProtocolVersion()
+    {
+        $response = new Response();
+
+        $this->assertEquals('1.0', $response->getProtocolVersion());
+
+        $response->setProtocolVersion('1.1');
+
+        $this->assertEquals('1.1', $response->getProtocolVersion());
+    }
+
+    public function testGetVary()
+    {
+        $response = new Response();
+        $this->assertEquals(array(), $response->getVary(), '->getVary() returns an empty array if no Vary header is present');
+
+        $response = new Response();
+        $response->headers->set('Vary', 'Accept-Language');
+        $this->assertEquals(array('Accept-Language'), $response->getVary(), '->getVary() parses a single header name value');
+
+        $response = new Response();
+        $response->headers->set('Vary', 'Accept-Language User-Agent    X-Foo');
+        $this->assertEquals(array('Accept-Language', 'User-Agent', 'X-Foo'), $response->getVary(), '->getVary() parses multiple header name values separated by spaces');
+
+        $response = new Response();
+        $response->headers->set('Vary', 'Accept-Language,User-Agent,    X-Foo');
+        $this->assertEquals(array('Accept-Language', 'User-Agent', 'X-Foo'), $response->getVary(), '->getVary() parses multiple header name values separated by commas');
+
+        $vary = array('Accept-Language', 'User-Agent', 'X-foo');
+
+        $response = new Response();
+        $response->headers->set('Vary', $vary);
+        $this->assertEquals($vary, $response->getVary(), '->getVary() parses multiple header name values in arrays');
+
+        $response = new Response();
+        $response->headers->set('Vary', 'Accept-Language, User-Agent, X-foo');
+        $this->assertEquals($vary, $response->getVary(), '->getVary() parses multiple header name values in arrays');
+    }
+
+    public function testSetVary()
+    {
+        $response = new Response();
+        $response->setVary('Accept-Language');
+        $this->assertEquals(array('Accept-Language'), $response->getVary());
+
+        $response->setVary('Accept-Language, User-Agent');
+        $this->assertEquals(array('Accept-Language', 'User-Agent'), $response->getVary(), '->setVary() replace the vary header by default');
+
+        $response->setVary('X-Foo', false);
+        $this->assertEquals(array('Accept-Language', 'User-Agent', 'X-Foo'), $response->getVary(), '->setVary() doesn\'t wipe out earlier Vary headers if replace is set to false');
+    }
+
+    public function testDefaultContentType()
+    {
+        $headerMock = $this->getMockBuilder('Symfony\Component\HttpFoundation\ResponseHeaderBag')->setMethods(array('set'))->getMock();
+        $headerMock->expects($this->at(0))
+            ->method('set')
+            ->with('Content-Type', 'text/html');
+        $headerMock->expects($this->at(1))
+            ->method('set')
+            ->with('Content-Type', 'text/html; charset=UTF-8');
+
+        $response = new Response('foo');
+        $response->headers = $headerMock;
+
+        $response->prepare(new Request());
+    }
+
+    public function testContentTypeCharset()
+    {
+        $response = new Response();
+        $response->headers->set('Content-Type', 'text/css');
+
+        // force fixContentType() to be called
+        $response->prepare(new Request());
+
+        $this->assertEquals('text/css; charset=UTF-8', $response->headers->get('Content-Type'));
+    }
+
+    public function testPrepareDoesNothingIfContentTypeIsSet()
+    {
+        $response = new Response('foo');
+        $response->headers->set('Content-Type', 'text/plain');
+
+        $response->prepare(new Request());
+
+        $this->assertEquals('text/plain; charset=UTF-8', $response->headers->get('content-type'));
+    }
+
+    public function testPrepareDoesNothingIfRequestFormatIsNotDefined()
+    {
+        $response = new Response('foo');
+
+        $response->prepare(new Request());
+
+        $this->assertEquals('text/html; charset=UTF-8', $response->headers->get('content-type'));
+    }
+
+    public function testPrepareSetContentType()
+    {
+        $response = new Response('foo');
+        $request = Request::create('/');
+        $request->setRequestFormat('json');
+
+        $response->prepare($request);
+
+        $this->assertEquals('application/json', $response->headers->get('content-type'));
+    }
+
+    public function testPrepareRemovesContentForHeadRequests()
+    {
+        $response = new Response('foo');
+        $request = Request::create('/', 'HEAD');
+
+        $length = 12345;
+        $response->headers->set('Content-Length', $length);
+        $response->prepare($request);
+
+        $this->assertEquals('', $response->getContent());
+        $this->assertEquals($length, $response->headers->get('Content-Length'), 'Content-Length should be as if it was GET; see RFC2616 14.13');
+    }
+
+    public function testPrepareRemovesContentForInformationalResponse()
+    {
+        $response = new Response('foo');
+        $request = Request::create('/');
+
+        $response->setContent('content');
+        $response->setStatusCode(101);
+        $response->prepare($request);
+        $this->assertEquals('', $response->getContent());
+        $this->assertFalse($response->headers->has('Content-Type'));
+        $this->assertFalse($response->headers->has('Content-Type'));
+
+        $response->setContent('content');
+        $response->setStatusCode(304);
+        $response->prepare($request);
+        $this->assertEquals('', $response->getContent());
+        $this->assertFalse($response->headers->has('Content-Type'));
+        $this->assertFalse($response->headers->has('Content-Length'));
+    }
+
+    public function testPrepareRemovesContentLength()
+    {
+        $response = new Response('foo');
+        $request = Request::create('/');
+
+        $response->headers->set('Content-Length', 12345);
+        $response->prepare($request);
+        $this->assertEquals(12345, $response->headers->get('Content-Length'));
+
+        $response->headers->set('Transfer-Encoding', 'chunked');
+        $response->prepare($request);
+        $this->assertFalse($response->headers->has('Content-Length'));
+    }
+
+    public function testPrepareSetsPragmaOnHttp10Only()
+    {
+        $request = Request::create('/', 'GET');
+        $request->server->set('SERVER_PROTOCOL', 'HTTP/1.0');
+
+        $response = new Response('foo');
+        $response->prepare($request);
+        $this->assertEquals('no-cache', $response->headers->get('pragma'));
+        $this->assertEquals('-1', $response->headers->get('expires'));
+
+        $request->server->set('SERVER_PROTOCOL', 'HTTP/1.1');
+        $response = new Response('foo');
+        $response->prepare($request);
+        $this->assertFalse($response->headers->has('pragma'));
+        $this->assertFalse($response->headers->has('expires'));
+    }
+
+    public function testSetCache()
+    {
+        $response = new Response();
+        //array('etag', 'last_modified', 'max_age', 's_maxage', 'private', 'public')
+        try {
+            $response->setCache(array('wrong option' => 'value'));
+            $this->fail('->setCache() throws an InvalidArgumentException if an option is not supported');
+        } catch (\Exception $e) {
+            $this->assertInstanceOf('InvalidArgumentException', $e, '->setCache() throws an InvalidArgumentException if an option is not supported');
+            $this->assertContains('"wrong option"', $e->getMessage());
+        }
+
+        $options = array('etag' => '"whatever"');
+        $response->setCache($options);
+        $this->assertEquals($response->getEtag(), '"whatever"');
+
+        $now = $this->createDateTimeNow();
+        $options = array('last_modified' => $now);
+        $response->setCache($options);
+        $this->assertEquals($response->getLastModified()->getTimestamp(), $now->getTimestamp());
+
+        $options = array('max_age' => 100);
+        $response->setCache($options);
+        $this->assertEquals($response->getMaxAge(), 100);
+
+        $options = array('s_maxage' => 200);
+        $response->setCache($options);
+        $this->assertEquals($response->getMaxAge(), 200);
+
+        $this->assertTrue($response->headers->hasCacheControlDirective('public'));
+        $this->assertFalse($response->headers->hasCacheControlDirective('private'));
+
+        $response->setCache(array('public' => true));
+        $this->assertTrue($response->headers->hasCacheControlDirective('public'));
+        $this->assertFalse($response->headers->hasCacheControlDirective('private'));
+
+        $response->setCache(array('public' => false));
+        $this->assertFalse($response->headers->hasCacheControlDirective('public'));
+        $this->assertTrue($response->headers->hasCacheControlDirective('private'));
+
+        $response->setCache(array('private' => true));
+        $this->assertFalse($response->headers->hasCacheControlDirective('public'));
+        $this->assertTrue($response->headers->hasCacheControlDirective('private'));
+
+        $response->setCache(array('private' => false));
+        $this->assertTrue($response->headers->hasCacheControlDirective('public'));
+        $this->assertFalse($response->headers->hasCacheControlDirective('private'));
+
+        $response->setCache(array('immutable' => true));
+        $this->assertTrue($response->headers->hasCacheControlDirective('immutable'));
+
+        $response->setCache(array('immutable' => false));
+        $this->assertFalse($response->headers->hasCacheControlDirective('immutable'));
+    }
+
+    public function testSendContent()
+    {
+        $response = new Response('test response rendering', 200);
+
+        ob_start();
+        $response->sendContent();
+        $string = ob_get_clean();
+        $this->assertContains('test response rendering', $string);
+    }
+
+    public function testSetPublic()
+    {
+        $response = new Response();
+        $response->setPublic();
+
+        $this->assertTrue($response->headers->hasCacheControlDirective('public'));
+        $this->assertFalse($response->headers->hasCacheControlDirective('private'));
+    }
+
+    public function testSetImmutable()
+    {
+        $response = new Response();
+        $response->setImmutable();
+
+        $this->assertTrue($response->headers->hasCacheControlDirective('immutable'));
+    }
+
+    public function testIsImmutable()
+    {
+        $response = new Response();
+        $response->setImmutable();
+
+        $this->assertTrue($response->isImmutable());
+    }
+
+    public function testSetExpires()
+    {
+        $response = new Response();
+        $response->setExpires(null);
+
+        $this->assertNull($response->getExpires(), '->setExpires() remove the header when passed null');
+
+        $now = $this->createDateTimeNow();
+        $response->setExpires($now);
+
+        $this->assertEquals($response->getExpires()->getTimestamp(), $now->getTimestamp());
+    }
+
+    public function testSetLastModified()
+    {
+        $response = new Response();
+        $response->setLastModified($this->createDateTimeNow());
+        $this->assertNotNull($response->getLastModified());
+
+        $response->setLastModified(null);
+        $this->assertNull($response->getLastModified());
+    }
+
+    public function testIsInvalid()
+    {
+        $response = new Response();
+
+        try {
+            $response->setStatusCode(99);
+            $this->fail();
+        } catch (\InvalidArgumentException $e) {
+            $this->assertTrue($response->isInvalid());
+        }
+
+        try {
+            $response->setStatusCode(650);
+            $this->fail();
+        } catch (\InvalidArgumentException $e) {
+            $this->assertTrue($response->isInvalid());
+        }
+
+        $response = new Response('', 200);
+        $this->assertFalse($response->isInvalid());
+    }
+
+    /**
+     * @dataProvider getStatusCodeFixtures
+     */
+    public function testSetStatusCode($code, $text, $expectedText)
+    {
+        $response = new Response();
+
+        $response->setStatusCode($code, $text);
+
+        $statusText = new \ReflectionProperty($response, 'statusText');
+        $statusText->setAccessible(true);
+
+        $this->assertEquals($expectedText, $statusText->getValue($response));
+    }
+
+    public function getStatusCodeFixtures()
+    {
+        return array(
+            array('200', null, 'OK'),
+            array('200', false, ''),
+            array('200', 'foo', 'foo'),
+            array('199', null, 'unknown status'),
+            array('199', false, ''),
+            array('199', 'foo', 'foo'),
+        );
+    }
+
+    public function testIsInformational()
+    {
+        $response = new Response('', 100);
+        $this->assertTrue($response->isInformational());
+
+        $response = new Response('', 200);
+        $this->assertFalse($response->isInformational());
+    }
+
+    public function testIsRedirectRedirection()
+    {
+        foreach (array(301, 302, 303, 307) as $code) {
+            $response = new Response('', $code);
+            $this->assertTrue($response->isRedirection());
+            $this->assertTrue($response->isRedirect());
+        }
+
+        $response = new Response('', 304);
+        $this->assertTrue($response->isRedirection());
+        $this->assertFalse($response->isRedirect());
+
+        $response = new Response('', 200);
+        $this->assertFalse($response->isRedirection());
+        $this->assertFalse($response->isRedirect());
+
+        $response = new Response('', 404);
+        $this->assertFalse($response->isRedirection());
+        $this->assertFalse($response->isRedirect());
+
+        $response = new Response('', 301, array('Location' => '/good-uri'));
+        $this->assertFalse($response->isRedirect('/bad-uri'));
+        $this->assertTrue($response->isRedirect('/good-uri'));
+    }
+
+    public function testIsNotFound()
+    {
+        $response = new Response('', 404);
+        $this->assertTrue($response->isNotFound());
+
+        $response = new Response('', 200);
+        $this->assertFalse($response->isNotFound());
+    }
+
+    public function testIsEmpty()
+    {
+        foreach (array(204, 304) as $code) {
+            $response = new Response('', $code);
+            $this->assertTrue($response->isEmpty());
+        }
+
+        $response = new Response('', 200);
+        $this->assertFalse($response->isEmpty());
+    }
+
+    public function testIsForbidden()
+    {
+        $response = new Response('', 403);
+        $this->assertTrue($response->isForbidden());
+
+        $response = new Response('', 200);
+        $this->assertFalse($response->isForbidden());
+    }
+
+    public function testIsOk()
+    {
+        $response = new Response('', 200);
+        $this->assertTrue($response->isOk());
+
+        $response = new Response('', 404);
+        $this->assertFalse($response->isOk());
+    }
+
+    public function testIsServerOrClientError()
+    {
+        $response = new Response('', 404);
+        $this->assertTrue($response->isClientError());
+        $this->assertFalse($response->isServerError());
+
+        $response = new Response('', 500);
+        $this->assertFalse($response->isClientError());
+        $this->assertTrue($response->isServerError());
+    }
+
+    public function testHasVary()
+    {
+        $response = new Response();
+        $this->assertFalse($response->hasVary());
+
+        $response->setVary('User-Agent');
+        $this->assertTrue($response->hasVary());
+    }
+
+    public function testSetEtag()
+    {
+        $response = new Response('', 200, array('ETag' => '"12345"'));
+        $response->setEtag();
+
+        $this->assertNull($response->headers->get('Etag'), '->setEtag() removes Etags when call with null');
+    }
+
+    /**
+     * @dataProvider validContentProvider
+     */
+    public function testSetContent($content)
+    {
+        $response = new Response();
+        $response->setContent($content);
+        $this->assertEquals((string) $content, $response->getContent());
+    }
+
+    /**
+     * @expectedException \UnexpectedValueException
+     * @dataProvider invalidContentProvider
+     */
+    public function testSetContentInvalid($content)
+    {
+        $response = new Response();
+        $response->setContent($content);
+    }
+
+    public function testSettersAreChainable()
+    {
+        $response = new Response();
+
+        $setters = array(
+            'setProtocolVersion' => '1.0',
+            'setCharset' => 'UTF-8',
+            'setPublic' => null,
+            'setPrivate' => null,
+            'setDate' => $this->createDateTimeNow(),
+            'expire' => null,
+            'setMaxAge' => 1,
+            'setSharedMaxAge' => 1,
+            'setTtl' => 1,
+            'setClientTtl' => 1,
+        );
+
+        foreach ($setters as $setter => $arg) {
+            $this->assertEquals($response, $response->{$setter}($arg));
+        }
+    }
+
+    public function testNoDeprecationsAreTriggered()
+    {
+        new DefaultResponse();
+        $this->getMockBuilder(Response::class)->getMock();
+
+        // we just need to ensure that subclasses of Response can be created without any deprecations
+        // being triggered if the subclass does not override any final methods
+        $this->addToAssertionCount(1);
+    }
+
+    public function validContentProvider()
+    {
+        return array(
+            'obj' => array(new StringableObject()),
+            'string' => array('Foo'),
+            'int' => array(2),
+        );
+    }
+
+    public function invalidContentProvider()
+    {
+        return array(
+            'obj' => array(new \stdClass()),
+            'array' => array(array()),
+            'bool' => array(true, '1'),
+        );
+    }
+
+    protected function createDateTimeOneHourAgo()
+    {
+        return $this->createDateTimeNow()->sub(new \DateInterval('PT1H'));
+    }
+
+    protected function createDateTimeOneHourLater()
+    {
+        return $this->createDateTimeNow()->add(new \DateInterval('PT1H'));
+    }
+
+    protected function createDateTimeNow()
+    {
+        $date = new \DateTime();
+
+        return $date->setTimestamp(time());
+    }
+
+    protected function provideResponse()
+    {
+        return new Response();
+    }
+
+    /**
+     * @see       http://github.com/zendframework/zend-diactoros for the canonical source repository
+     *
+     * @author    Fábio Pacheco
+     * @copyright Copyright (c) 2015-2016 Zend Technologies USA Inc. (http://www.zend.com)
+     * @license   https://github.com/zendframework/zend-diactoros/blob/master/LICENSE.md New BSD License
+     */
+    public function ianaCodesReasonPhrasesProvider()
+    {
+        if (!in_array('https', stream_get_wrappers(), true)) {
+            $this->markTestSkipped('The "https" wrapper is not available');
+        }
+
+        $ianaHttpStatusCodes = new \DOMDocument();
+
+        libxml_set_streams_context(stream_context_create(array(
+            'http' => array(
+                'method' => 'GET',
+                'timeout' => 30,
+            ),
+        )));
+
+        $ianaHttpStatusCodes->load('https://www.iana.org/assignments/http-status-codes/http-status-codes.xml');
+        if (!$ianaHttpStatusCodes->relaxNGValidate(__DIR__.'/schema/http-status-codes.rng')) {
+            self::fail('Invalid IANA\'s HTTP status code list.');
+        }
+
+        $ianaCodesReasonPhrases = array();
+
+        $xpath = new \DOMXPath($ianaHttpStatusCodes);
+        $xpath->registerNamespace('ns', 'http://www.iana.org/assignments');
+
+        $records = $xpath->query('//ns:record');
+        foreach ($records as $record) {
+            $value = $xpath->query('.//ns:value', $record)->item(0)->nodeValue;
+            $description = $xpath->query('.//ns:description', $record)->item(0)->nodeValue;
+
+            if (in_array($description, array('Unassigned', '(Unused)'), true)) {
+                continue;
+            }
+
+            if (preg_match('/^([0-9]+)\s*\-\s*([0-9]+)$/', $value, $matches)) {
+                for ($value = $matches[1]; $value <= $matches[2]; ++$value) {
+                    $ianaCodesReasonPhrases[] = array($value, $description);
+                }
+            } else {
+                $ianaCodesReasonPhrases[] = array($value, $description);
+            }
+        }
+
+        return $ianaCodesReasonPhrases;
+    }
+
+    /**
+     * @dataProvider ianaCodesReasonPhrasesProvider
+     */
+    public function testReasonPhraseDefaultsAgainstIana($code, $reasonPhrase)
+    {
+        $this->assertEquals($reasonPhrase, Response::$statusTexts[$code]);
+    }
+}
+
+class StringableObject
+{
+    public function __toString()
+    {
+        return 'Foo';
+    }
+}
+
+class DefaultResponse extends Response
+{
+}
+
+class ExtendedResponse extends Response
+{
+    public function setLastModified(\DateTime $date = null)
+    {
+    }
+
+    public function getDate()
+    {
+    }
+}