PHPUnit中传入桩方法的回调函数及关联受保护方法的测试实现

public function performPoolRequest(RecreationRequestsCollection $requests): RecreatedPaymentsPoolReading
{
    $count_request = count($requests);

    if($count_request) {
        $pool_recreate_payments = new RecreatedPaymentsPool();

        $this->http_client->sendPoolRequest(
            $this->generateRequests($requests),
            $count_request,
            function (ResponseInterface $response, $index) use ($requests, $pool_recreate_payments) {
                $this->successHandler($response, $requests, $index, $pool_recreate_payments);
            },
            function (BadResponseException $reason, $index) use ($requests, $pool_recreate_payments) {
                $this->failureHandler($reason, $requests, $index, $pool_recreate_payments);
            }
        );

        return $pool_recreate_payments;
    } else {
        throw new PoolRequestException('Incorrect amount of requests: ' . $count_request);
    }
}

测试实现的核心难点 #

在编写测试时，下述代码段的测试实现存在难点：

$this->http_client->sendPoolRequest(
    $this->generateRequests($requests),
    $count_request,
    function (ResponseInterface $response, $index) use ($requests, $pool_recreate_payments) {
        $this->successHandler($response, $requests, $index, $pool_recreate_payments);
    },
    function (BadResponseException $reason, $index) use ($requests, $pool_recreate_payments) {
        $this->failureHandler($reason, $requests, $index, $pool_recreate_payments);
    }
);

测试现状与目标 #

• 已完成$this->http_client的Mock对象创建
• 存在问题：不清楚如何对传入sendPoolRequest方法的各类参数开展测试，覆盖范围包括generateRequests($requests)的处理逻辑、successHandler、failureHandler的执行逻辑
• 已知可行方案：上述关联方法均为protected权限，可通过反射对象单独开展测试
• 预期探索方向：寻找可落地的实现方案，在单个测试用例中，通过校验最终返回的$pool_recreate_payments对象中的值，完成上述关联逻辑的整体验证

内容的提问来源于stack exchange，提问作者Kirill Zaytsev