Pinq\Tests\Integration\Traversable\Aggregates\AggregateTest::testThatAggregateOnEmptyReturnsNull PHP Метод

    public function testThatAggregateOnEmptyReturnsNull(\Pinq\ITraversable $traversable, array $data)
    {
        $this->assertNull($traversable->aggregate(function () {
            return true;
        }));
    }