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<?php
namespace GuzzleHttp\Tests\Subscriber\Cache;
use Doctrine\Common\Cache\ArrayCache;
use GuzzleHttp\Message\Response;
use GuzzleHttp\Subscriber\Cache\CacheStorage;
/**
* Test the CacheStorage class.
*
* @class CacheStorageTest
*/
class CacheStorageTest extends \PHPUnit_Framework_TestCase
{
/**
* Test that a Response's max-age returns the correct TTL.
*/
public function testGetTtlMaxAge()
{
$response = new Response(200, [
'Cache-control' => 'max-age=10',
]);
$getTtl = $this->getMethod('getTtl');
$cache = new CacheStorage(new ArrayCache());
$ttl = $getTtl->invokeArgs($cache, [$response]);
$this->assertEquals(10, $ttl);
}
/**
* Test that the default TTL for cachable responses with no max-age headers
* is zero.
*/
public function testGetTtlDefault()
{
$response = new Response(200);
$getTtl = $this->getMethod('getTtl');
$cache = new CacheStorage(new ArrayCache());
$ttl = $getTtl->invokeArgs($cache, [$response]);
// assertSame() here to be specific about null / false returns.
$this->assertSame(0, $ttl);
}
/**
* Test setting the default TTL.
*/
public function testSetTtlDefault()
{
$response = new Response(200);
$getTtl = $this->getMethod('getTtl');
$cache = new CacheStorage(new ArrayCache(), null, 10);
$ttl = $getTtl->invokeArgs($cache, [$response]);
$this->assertEquals(10, $ttl);
}
/**
* Test that stale-if-error is added to the max-age header.
*/
public function testGetTtlMaxAgeStaleIfError()
{
$response = new Response(200, [
'Cache-control' => 'max-age=10, stale-if-error=10',
]);
$getTtl = $this->getMethod('getTtl');
$cache = new CacheStorage(new ArrayCache());
$ttl = $getTtl->invokeArgs($cache, [$response]);
$this->assertEquals(20, $ttl);
}
/**
* Test that stale-if-error works without a max-age header.
*/
public function testGetTtlStaleIfErrorAlone()
{
$response = new Response(200, [
'Cache-control' => 'stale-if-error=10',
]);
$getTtl = $this->getMethod('getTtl');
$cache = new CacheStorage(new ArrayCache());
$ttl = $getTtl->invokeArgs($cache, [$response]);
$this->assertEquals(10, $ttl);
}
/**
* Test that expires is considered when cache-control is not available.
*/
public function testGetTtlExpires()
{
$expires = new \DateTime('+100 seconds');
$response = new Response(200, [
'Expires' => $expires->format(DATE_RFC1123),
]);
$getTtl = $this->getMethod('getTtl');
$cache = new CacheStorage(new ArrayCache());
$ttl = $getTtl->invokeArgs($cache, [$response]);
$this->assertEquals(100, $ttl);
}
/**
* Test that cache-control is considered before expires.
*/
public function testGetTtlCacheControlExpires()
{
$expires = new \DateTime('+100 seconds');
$response = new Response(200, [
'Expires' => $expires->format(DATE_RFC1123),
'Cache-control' => 'max-age=10',
]);
$getTtl = $this->getMethod('getTtl');
$cache = new CacheStorage(new ArrayCache());
$ttl = $getTtl->invokeArgs($cache, [$response]);
$this->assertEquals(10, $ttl);
}
/**
* Return a protected or private method.
*
* @param string $name The name of the method.
*
* @return \ReflectionMethod A method object.
*/
protected static function getMethod($name)
{
$class = new \ReflectionClass('GuzzleHttp\Subscriber\Cache\CacheStorage');
$method = $class->getMethod($name);
$method->setAccessible(true);
return $method;
}
}