public function testSystemPreferenceCreate()
{
$client = static::makeClient(true);
$parameters = ["preferenceKey" => "foobar", "@type" => "SystemPreference", "preferenceValue" => "test"];
// First test: Ensure invalid auth key is returned
$client->request('POST', '/api/system_preferences', [], [], [], json_encode($parameters));
$this->assertEquals(200, $client->getResponse()->getStatusCode());
}