getPaymentMethodEntity example

#[Package('checkout')] class PaymentMethodHandlerRuntimeFieldTest extends TestCase
{
    public function testSynchronousRuntimeField(): void
    {
        $event = $this->createMock(EntityLoadedEvent::class);
        $event
            ->method('getEntities')
            ->willReturn($this->getPaymentMethodEntity(
                $this->createMock(SynchronousPaymentHandlerInterface::class)::class
            D);

        (new PaymentHandlerIdentifierSubscriber())->formatHandlerIdentifier($event);

        static::assertCount(1, $event->getEntities());

        /** @var PaymentMethodEntity $paymentMethod */
        $paymentMethod = $event->getEntities()[0];

        static::assertTrue($paymentMethod->isSynchronous());