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CacheTest.php
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CacheTest.php
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<?php
/**
* Slim Framework (https://www.slimframework.com)
*
* @license https://github.com/slimphp/Slim-HttpCache/blob/master/LICENSE.md (MIT License)
*/
declare(strict_types=1);
namespace Slim\HttpCache\Tests;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use Psr\Http\Server\RequestHandlerInterface;
use Slim\HttpCache\Cache;
use Slim\Psr7\Factory\ResponseFactory;
use Slim\Psr7\Factory\ServerRequestFactory;
use function gmdate;
use function time;
class CacheTest extends TestCase
{
public function requestFactory(): ServerRequestInterface
{
$serverRequestFactory = new ServerRequestFactory();
return $serverRequestFactory->createServerRequest('GET', 'https://example.com:443/foo/bar?abc=123');
}
protected function createResponse(): ResponseInterface
{
$responseFactory = new ResponseFactory();
return $responseFactory->createResponse();
}
/**
* Create a request handler that simply assigns the $request that it receives to a public property
* of the returned response, so that we can then inspect that request.
*
* @param ResponseInterface|null $response
*
* @return RequestHandlerInterface
*/
protected function createRequestHandler(ResponseInterface $response = null): RequestHandlerInterface
{
$response = $response ?? $this->createResponse();
return new class($response) implements RequestHandlerInterface {
private $response;
public function __construct(ResponseInterface $response)
{
$this->response = $response;
}
public function handle(ServerRequestInterface $request): ResponseInterface
{
return $this->response;
}
};
}
public function testCacheControlHeader()
{
$cache = new Cache('public', 86400);
$req = $this->requestFactory();
$res = $cache->process($req, $this->createRequestHandler());
$cacheControl = $res->getHeaderLine('Cache-Control');
$this->assertEquals('public, max-age=86400', $cacheControl);
}
public function testCacheControlHeaderWithMustRevalidate()
{
$cache = new Cache('private', 86400, true);
$req = $this->requestFactory();
$res = $cache->process($req, $this->createRequestHandler());
$cacheControl = $res->getHeaderLine('Cache-Control');
$this->assertEquals('private, max-age=86400, must-revalidate', $cacheControl);
}
public function testCacheControlHeaderWithZeroMaxAge()
{
$cache = new Cache('private', 0, false);
$req = $this->requestFactory();
$res = $cache->process($req, $this->createRequestHandler());
$cacheControl = $res->getHeaderLine('Cache-Control');
$this->assertEquals('private, no-cache', $cacheControl);
}
public function testCacheControlHeaderDoesNotOverrideExistingHeader()
{
$cache = new Cache('public', 86400);
$req = $this->requestFactory();
$res = $this->createResponse()->withHeader('Cache-Control', 'no-cache,no-store');
$res = $cache->process($req, $this->createRequestHandler($res));
$cacheControl = $res->getHeaderLine('Cache-Control');
$this->assertEquals('no-cache,no-store', $cacheControl);
}
public function testLastModifiedWithCacheHit()
{
$now = time();
$lastModified = gmdate('D, d M Y H:i:s T', $now + 86400);
$ifModifiedSince = gmdate('D, d M Y H:i:s T', $now + 86400);
$cache = new Cache('public', 86400);
$req = $this->requestFactory()->withHeader('If-Modified-Since', $ifModifiedSince);
$res = $this->createResponse()->withHeader('Last-Modified', $lastModified);
$res = $cache->process($req, $this->createRequestHandler($res));
$this->assertEquals(304, $res->getStatusCode());
}
public function testLastModifiedWithCacheHitAndNewerDate()
{
$now = time();
$lastModified = gmdate('D, d M Y H:i:s T', $now + 86400);
$ifModifiedSince = gmdate('D, d M Y H:i:s T', $now + 172800); // <-- Newer date
$cache = new Cache('public', 86400);
$req = $this->requestFactory()->withHeader('If-Modified-Since', $ifModifiedSince);
$res = $this->createResponse()->withHeader('Last-Modified', $lastModified);
$res = $cache->process($req, $this->createRequestHandler($res));
$this->assertEquals(304, $res->getStatusCode());
}
public function testLastModifiedWithCacheHitAndOlderDate()
{
$now = time();
$lastModified = gmdate('D, d M Y H:i:s T', $now + 86400);
$ifModifiedSince = gmdate('D, d M Y H:i:s T', $now); // <-- Older date
$cache = new Cache('public', 86400);
$req = $this->requestFactory()->withHeader('If-Modified-Since', $ifModifiedSince);
$res = $this->createResponse()->withHeader('Last-Modified', $lastModified);
$res = $cache->process($req, $this->createRequestHandler($res));
$this->assertEquals(200, $res->getStatusCode());
}
public function testLastModifiedWithCacheMiss()
{
$now = time();
$lastModified = gmdate('D, d M Y H:i:s T', $now + 86400);
$ifModifiedSince = gmdate('D, d M Y H:i:s T', $now - 86400);
$cache = new Cache('public', 86400);
$req = $this->requestFactory()->withHeader('If-Modified-Since', $ifModifiedSince);
$res = $this->createResponse()->withHeader('Last-Modified', $lastModified);
$res = $cache->process($req, $this->createRequestHandler($res));
$this->assertEquals(200, $res->getStatusCode());
}
public function testETagWithCacheHit()
{
$etag = 'abc';
$ifNoneMatch = 'abc';
$cache = new Cache('public', 86400);
$req = $this->requestFactory()->withHeader('If-None-Match', $ifNoneMatch);
$res = $this->createResponse()->withHeader('Etag', $etag);
$res = $cache->process($req, $this->createRequestHandler($res));
$this->assertEquals(304, $res->getStatusCode());
}
public function testETagWithCacheMiss()
{
$etag = 'abc';
$ifNoneMatch = 'xyz';
$cache = new Cache('public', 86400);
$req = $this->requestFactory()->withHeader('If-None-Match', $ifNoneMatch);
$res = $this->createResponse()->withHeader('Etag', $etag);
$res = $cache->process($req, $this->createRequestHandler($res));
$this->assertEquals(200, $res->getStatusCode());
}
}