AbstractPriceTest.php

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<?php
namespace Magento\Framework\Pricing\Test\Unit\Price;

use \Magento\Framework\Pricing\Price\AbstractPrice;

class AbstractPriceTest extends \PHPUnit\Framework\TestCase
{
    protected $price;

    protected $priceInfoMock;

    protected $saleableItemMock;

    protected $calculatorMock;

    protected $priceCurrencyMock;

    protected function setUp()
    {
        $qty = 1;
        $this->saleableItemMock = $this->createMock(\Magento\Catalog\Model\Product::class);
        $this->priceInfoMock = $this->createMock(\Magento\Framework\Pricing\PriceInfo\Base::class);
        $this->calculatorMock = $this->createMock(\Magento\Framework\Pricing\Adjustment\Calculator::class);

        $this->saleableItemMock->expects($this->once())
            ->method('getPriceInfo')
            ->will($this->returnValue($this->priceInfoMock));
        $objectManager = new \Magento\Framework\TestFramework\Unit\Helper\ObjectManager($this);

        $this->priceCurrencyMock = $this->createMock(\Magento\Framework\Pricing\PriceCurrencyInterface::class);

        $this->price = $objectManager->getObject(
            \Magento\Framework\Pricing\Test\Unit\Price\Stub::class,
            [
                'saleableItem' => $this->saleableItemMock,
                'quantity' => $qty,
                'calculator' => $this->calculatorMock,
                'priceCurrency' => $this->priceCurrencyMock,
            ]
        );
    }

    public function testGetAmount()
    {
        $priceValue = $this->price->getValue();
        $amountValue = 88;
        $this->calculatorMock->expects($this->once())
            ->method('getAmount')
            ->with($this->equalTo($priceValue))
            ->will($this->returnValue($amountValue));
        $this->assertEquals($amountValue, $this->price->getAmount());
    }

    public function testGetPriceCode()
    {
        $this->assertEquals(AbstractPrice::PRICE_CODE, $this->price->getPriceCode());
    }

    public function testGetCustomAmount()
    {
        $exclude = false;
        $amount = 21.0;
        $convertedValue = 30.25;
        $customAmount = 42.0;

        $this->priceCurrencyMock->expects($this->any())
            ->method('convertAndRound')
            ->with($amount)
            ->will($this->returnValue($convertedValue));
        $this->calculatorMock->expects($this->once())
            ->method('getAmount')
            ->with($convertedValue, $this->saleableItemMock, $exclude)
            ->will($this->returnValue($customAmount));

        $this->assertEquals($customAmount, $this->price->getCustomAmount($amount, $exclude));
    }

    public function testGetCustomAmountDefault()
    {
        $customAmount = 42.0;
        $this->calculatorMock->expects($this->once())
            ->method('getAmount')
            ->with($this->price->getValue(), $this->saleableItemMock, null)
            ->will($this->returnValue($customAmount));

        $this->assertEquals($customAmount, $this->price->getCustomAmount());
    }

    public function testGetQuantity()
    {
        $this->assertEquals(1, $this->price->getQuantity());
    }
}