public function test_should_register_and_get_works_fine()
 {
     Context::register('key1', 'val1');
     Context::register('key2', new StdClass());
     Context::unregister('key2');
     Context::unregister('I_am_not_exists');
     $this->assertEquals('val1', Context::get('key1', 'val2'));
     $this->assertEquals('default', Context::get('key2', 'default'));
 }