public function testMustRevalidate()
{
$now = time();
// Expires 1 year in the future, and contains the must-revalidate directive.
// Don't revalidate. must-revalidate only applies to expired entries.
$future = $now + 365 * 24 * 60 * 60;
$resp = new apiHttpRequest('http://localhost', 'GET');
$resp->setResponseHttpCode('200');
$resp->setResponseHeaders(array('Cache-Control' => 'max-age=3600, must-revalidate', 'Expires' => gmdate('D, d M Y H:i:s', $future) . ' GMT', 'Date' => gmdate('D, d M Y H:i:s', $now) . ' GMT'));
$this->assertFalse(apiCacheParser::mustRevalidate($resp));
// Contains the max-age=3600 directive, but was created 2 hours ago.
// Must revalidate.
$past = $now - 2 * 60 * 60;
$resp = new apiHttpRequest('http://localhost', 'GET');
$resp->setResponseHttpCode('200');
$resp->setResponseHeaders(array('Cache-Control' => 'max-age=3600', 'Expires' => gmdate('D, d M Y H:i:s', $future) . ' GMT', 'Date' => gmdate('D, d M Y H:i:s', $past) . ' GMT'));
$this->assertTrue(apiCacheParser::mustRevalidate($resp));
// Contains the max-age=3600 directive, and was created 600 seconds ago.
// No need to revalidate, regardless of the expires header.
$past = $now - 600;
$resp = new apiHttpRequest('http://localhost', 'GET');
$resp->setResponseHttpCode('200');
$resp->setResponseHeaders(array('Cache-Control' => 'max-age=3600', 'Expires' => gmdate('D, d M Y H:i:s', $past) . ' GMT', 'Date' => gmdate('D, d M Y H:i:s', $past) . ' GMT'));
$this->assertFalse(apiCacheParser::mustRevalidate($resp));
}
/**
* @visible for testing.
* @param apiHttpRequest $request
* @return apiHttpRequest|bool Returns the cached object or
* false if the operation was unsuccessful.
*/
public function getCachedRequest(apiHttpRequest $request)
{
if (false == apiCacheParser::isRequestCacheable($request)) {
false;
}
return apiClient::$cache->get($request->getCacheKey());
}
public function testIsExpired()
{
$now = time();
$future = $now + 365 * 24 * 60 * 60;
// Expires 1 year in the future. Response is fresh.
$resp = new apiHttpRequest('GET');
$resp->setResponseHttpCode('200');
$resp->setResponseHeaders(array('Expires' => gmdate('D, d M Y H:i:s', $future) . ' GMT', 'Date' => gmdate('D, d M Y H:i:s', $now) . ' GMT'));
$this->assertFalse(apiCacheParser::isExpired($resp));
// The response expires soon. Response is fresh.
$resp = new apiHttpRequest('GET');
$resp->setResponseHttpCode('200');
$resp->setResponseHeaders(array('Expires' => gmdate('D, d M Y H:i:s', $now + 2), 'Date' => gmdate('D, d M Y H:i:s', $now) . ' GMT'));
$this->assertFalse(apiCacheParser::isExpired($resp));
// Expired 1 year ago. Response is stale.
$future = $now - 365 * 24 * 60 * 60;
$resp = new apiHttpRequest('GET');
$resp->setResponseHttpCode('200');
$resp->setResponseHeaders(array('Expires' => gmdate('D, d M Y H:i:s', $future) . ' GMT', 'Date' => gmdate('D, d M Y H:i:s', $now) . ' GMT'));
$this->assertTrue(apiCacheParser::isExpired($resp));
// Invalid expires header. Response is stale.
$resp = new apiHttpRequest('GET');
$resp->setResponseHttpCode('200');
$resp->setResponseHeaders(array('Expires' => '-1', 'Date' => gmdate('D, d M Y H:i:s', $now) . ' GMT'));
$this->assertTrue(apiCacheParser::isExpired($resp));
// The response expires immediately. G+ APIs do this. Response is stale.
$resp = new apiHttpRequest('GET');
$resp->setResponseHttpCode('200');
$resp->setResponseHeaders(array('Expires' => gmdate('D, d M Y H:i:s', $now), 'Date' => gmdate('D, d M Y H:i:s', $now) . ' GMT'));
$this->assertTrue(apiCacheParser::isExpired($resp));
}