public function testGetTopCouple()
{
$collection = new CandyCanePlantCollection([new CandyCanePlant(1), new CandyCanePlant(3), new CandyCanePlant(2)]);
$couple = $collection->getTopCouple();
$this->assertInstanceOf(PlantCouple::class, $couple);
$this->assertAttributeContainsOnly(PlantCouple::class, 'yields', $collection);
$this->assertInstanceOf(CandyCanePlant::class, $couple->getFather());
$this->assertInstanceOf(CandyCanePlant::class, $couple->getMother());
$this->assertEquals(3, $couple->getFather()->getYield());
$this->assertEquals(2, $couple->getMother()->getYield());
}
<?php
/**
* File index.php
*
* @author Edward Pfremmer <*****@*****.**>
*/
require_once 'vendor/autoload.php';
use PHPWeekly\Collection\CandyCanePlantCollection;
use PHPWeekly\Service\CandyCanePlantBreederService;
use PHPWeekly\Plant\CandyCanePlant;
$breederService = new CandyCanePlantBreederService();
$plantCollection = new CandyCanePlantCollection([new CandyCanePlant(5), new CandyCanePlant(3), new CandyCanePlant(2)]);
/*
* To convert this to be able to calculate yield loss due to time this would
* need to be called recursively. Each iteration representing 1 weeks time.
*
* Plant offspring would be pushed to a separate collection, each previous generation
* plant's yield would be decremented by one with each iteration before mergine the
* two collections back together for the next iteration.
*/
while ($couple = $plantCollection->getTopCouple()) {
$offspring = $breederService->breed($couple->getFather(), $couple->getMother());
$plantCollection->push($offspring);
}
// calculate total yield
$yield = $plantCollection->reduce(function ($result, CandyCanePlant $plant) {
return $result + $plant->getYield();
});
// print results
$plantCollection->each(function (CandyCanePlant $plant) {
