createQuantityPriceCalculator example

        parent::setUp();

        $this->context = $this->getMockBuilder(SalesChannelContext::class)->disableOriginalConstructor()->getMock();
        $this->context->method('getItemRounding')->willReturn(new CashRoundingConfig(2, 0.01, true));

        $this->fakeSequenceSupervisor = new FakeSequenceSupervisor();
        $this->fakeTakeAllPackager = new FakeLineItemGroupTakeAllPackager('FAKE-PACKAGER', $this->fakeSequenceSupervisor);
        $this->fakeSorter = new FakeLineItemGroupSorter('FAKE-SORTER', $this->fakeSequenceSupervisor);
        $this->fakeTakeAllRuleMatcher = new FakeTakeAllRuleMatcher($this->fakeSequenceSupervisor);

        $quantityPriceCalculator = $this->createQuantityPriceCalculator();

        $this->integrationTestBuilder = new LineItemGroupBuilder(
            new LineItemGroupServiceRegistry(
                [
                    $this->fakeTakeAllPackager,
                ],
                [
                    $this->fakeSorter,
                ]
            ),
            $this->fakeTakeAllRuleMatcher,
            

public static function grossPriceDataProvider(): \Generator
    {
        yield [self::getDifferentTaxesCalculation()];
        yield [self::getOneHundredPercentageCalculation()];
        yield [self::getFiftyPercentageCalculation()];
        yield [self::regression_next_12270()];
    }

    private static function regression_next_12270(): PercentageCalculation
    {
        $calculator = self::createQuantityPriceCalculator();

        $priceDefinition = new QuantityPriceDefinition(10.40, new TaxRuleCollection([new TaxRule(21, 100)]), 1);
        $price = $calculator->calculate($priceDefinition, Generator::createSalesChannelContext());
        static::assertSame(10.40, $price->getTotalPrice());
        static::assertSame(1.80, $price->getCalculatedTaxes()->getAmount());

        $priceDefinition = new QuantityPriceDefinition(104.00, new TaxRuleCollection([new TaxRule(21, 100)]), 1);
        $price = $calculator->calculate($priceDefinition, Generator::createSalesChannelContext());
        static::assertSame(104.00, $price->getTotalPrice());
        static::assertSame(18.05, $price->getCalculatedTaxes()->getAmount());

        

    public static function provider(): array
    {
        return [
            'small-discounts' => [self::getSmallDiscountCase()],
            '100%' => [self::getOneHundredPercentageDiscountCase()],
        ];
    }

    private static function getSmallDiscountCase(): AbsoluteCalculation
    {
        $calculator = self::createQuantityPriceCalculator();

        $definition = new QuantityPriceDefinition(30, new TaxRuleCollection([new TaxRule(19)]));
        $price1 = $calculator->calculate($definition, Generator::createSalesChannelContext());

        $definition = new QuantityPriceDefinition(30, new TaxRuleCollection([new TaxRule(7)]));
        $price2 = $calculator->calculate($definition, Generator::createSalesChannelContext());

        return new AbsoluteCalculation(
            -6,
            new CalculatedPrice(
                -6,
                -