public function testAddCacheHeaders()
{
$body = "<html><head></head><body><h1>Mysite</h1></body></html>";
$response = new HTTPResponse($body, 200);
$this->assertEmpty($response->getHeader('Cache-Control'));
HTTP::set_cache_age(30);
HTTP::add_cache_headers($response);
$this->assertNotEmpty($response->getHeader('Cache-Control'));
// Ensure max-age is zero for development.
Director::config()->update('environment_type', 'dev');
$response = new HTTPResponse($body, 200);
HTTP::add_cache_headers($response);
$this->assertContains('max-age=0', $response->getHeader('Cache-Control'));
// Ensure max-age setting is respected in production.
Director::config()->update('environment_type', 'live');
$response = new HTTPResponse($body, 200);
HTTP::add_cache_headers($response);
$this->assertContains('max-age=30', explode(', ', $response->getHeader('Cache-Control')));
$this->assertNotContains('max-age=0', $response->getHeader('Cache-Control'));
// Still "live": Ensure header's aren't overridden if already set (using purposefully different values).
$headers = array('Vary' => '*', 'Pragma' => 'no-cache', 'Cache-Control' => 'max-age=0, no-cache, no-store');
$response = new HTTPResponse($body, 200);
foreach ($headers as $name => $value) {
$response->addHeader($name, $value);
}
HTTP::add_cache_headers($response);
foreach ($headers as $name => $value) {
$this->assertEquals($value, $response->getHeader($name));
}
}
/**
* If the last request was a 3xx response, then follow the redirection
*
* @return HTTPResponse The response given, or null if no redirect occurred
*/
public function followRedirection()
{
if ($this->lastResponse->getHeader('Location')) {
$url = Director::makeRelative($this->lastResponse->getHeader('Location'));
$url = strtok($url, '#');
return $this->get($url);
}
}
/**
* Returns true if negotiation is enabled for the given response. By default, negotiation is only
* enabled for pages that have the xml header.
*
* @param HTTPResponse $response
* @return bool
*/
public static function enabled_for($response)
{
$contentType = $response->getHeader("Content-Type");
// Disable content negotiation for other content types
if ($contentType && substr($contentType, 0, 9) != 'text/html' && substr($contentType, 0, 21) != 'application/xhtml+xml') {
return false;
}
if (static::config()->enabled) {
return true;
} else {
return substr($response->getBody(), 0, 5) == '<' . '?xml';
}
}
/**
* Assert that a response matches the given parameters
*
* @param int $code HTTP code
* @param string $body Body expected for 200 responses
* @param HTTPResponse $response
*/
protected function assertResponseEquals($code, $body, HTTPResponse $response)
{
$this->assertEquals($code, $response->getStatusCode());
if ($code === 200) {
$this->assertFalse($response->isError());
$this->assertEquals($body, $response->getBody());
$this->assertEquals('text/plain', $response->getHeader('Content-Type'));
} else {
$this->assertTrue($response->isError());
}
}