<pre>
<?php

xdebug_start_code_coverage(XDEBUG_CC_UNUSED | XDEBUG_CC_DEAD_CODE | XDEBUG_CC_BRANCH_CHECK);

class NPSRepository
{
/* @var PDO /
private $pdo;

public function __construct(PDO $pdo)
{
    $this->pdo = $pdo;
    $this->pdo->exec('CREATE TABLE np_score(user_id INTEGER NOT NULL, score INTEGER NOT NULL);');
}

public function importUserRecords(array $records): void
{
    $statement = $this->pdo->prepare('INSERT INTO np_score(user_id, score) VALUES (:userId, :score)');
    foreach ($records as $userId => $score) {
        $statement->bindValue('userId', $userId, PDO::PARAM_INT);
        $statement->bindValue('score', $score, PDO::PARAM_INT);
        $statement->execute();
    }
}

}

$pdo = new PDO('sqlite::memory:', null, null, [PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION]);
$repository = new NPSRepository($pdo);

$repository->importUserRecords([1,1]);

$coverage = xdebug_get_code_coverage()[FILE]['functions']['NPSRepository->importUserRecords'];
print_r($coverage);
</pre>