PHPUnit延迟断言

Question

im进行发布订阅测试。我试图使用sleep(3)来延迟queue：worker直到消耗完

但是它不起作用，睡眠只会延迟整个测试

$msg['token'] = $this->accessToken;
        $msg['payload'] = [
            'trxid' => "NORM-PURC-001",
            'trx_amount' => 100000,
            'items' => [
                array( 'id'=>'SKU0001', 'name'=>'Simpati 100.000', 'price'=>100000, 'qty'=>1 )
            ]
        ];

        $this->publish($msg);

public function publish($msg)
    {
        Amqp::publish('piggybank-transaction', json_encode($msg), [
            'exchange' => 'piggybank',
            'exchange_type' => 'direct'
        ]);

        sleep(3);
    }