setDisplayGross example

$currency = $currency ?: (new CurrencyEntity())->assign([
            'id' => '4c8eba11bd3546d786afbed481a6e665',
            'factor' => 1,
        ]);

        $currency->setFactor(1);

        if (!$currentCustomerGroup) {
            $currentCustomerGroup = new CustomerGroupEntity();
            $currentCustomerGroup->setId(TestDefaults::FALLBACK_CUSTOMER_GROUP);
            $currentCustomerGroup->setDisplayGross(true);
        }

        if (!$taxes) {
            $tax = new TaxEntity();
            $tax->setId('4926035368e34d9fa695e017d7a231b9');
            $tax->setName('test');
            $tax->setTaxRate(19.0);

            $taxes = new TaxCollection([$tax]);
        }

        

/** * @internal */
class TaxDetectorTest extends TestCase
{
    use IntegrationTestBehaviour;

    public function testUseGrossPrices(): void
    {
        $context = $this->createMock(SalesChannelContext::class);
        $customerGroup = new CustomerGroupEntity();
        $customerGroup->setDisplayGross(true);
        $context->expects(static::once())->method('getCurrentCustomerGroup')->willReturn($customerGroup);

        $detector = $this->getContainer()->get(TaxDetector::class);
        static::assertTrue($detector->useGross($context));
    }

    public function testDoNotUseGrossPrices(): void
    {
        $context = $this->createMock(SalesChannelContext::class);
        $customerGroup = new CustomerGroupEntity();
        $customerGroup->setDisplayGross(false);