Pinq\Tests\Integration\Traversable\Aggregates\SumTest::testThatSumOperatesCorrectly PHP Метод

    public function testThatSumOperatesCorrectly(\Pinq\ITraversable $traversable, array $data)
    {
        $this->assertSame(empty($data) ? null : array_sum($data), $traversable->sum());
    }