public function shouldGetNullCommand()
{
$command_name = '';
$context = new Context(new Identifier('1', 'test'));
$command = Utils::getCommand($command_name, $context);
$this->assertTrue(is_a($command, 'izzum\\command\\NullCommand'));
$command_name = null;
$context = new Context(new Identifier('1', 'test'));
$command = Utils::getCommand($command_name, $context);
$this->assertTrue(is_a($command, 'izzum\\command\\NullCommand'));
}