setFirstTransactionState example

static::assertNotNull($this->paymentMethodChangedCriteriaEventResult);
        static::assertNotNull($this->paymentMethodChangedEventResult);
        static::assertSame($lastTransaction->getId(), $this->paymentMethodChangedEventResult->getOrderTransaction()->getId());
        static::assertNotNull($this->transactionStateEventResult);
        static::assertSame($firstTransaction->getId(), $this->transactionStateEventResult->getEntityId());
        static::assertSame('open', $this->transactionStateEventResult->getFromPlace()->getTechnicalName());
        static::assertSame('cancelled', $this->transactionStateEventResult->getToPlace()->getTechnicalName());
    }

    public function testSetPaymentMethodOwnOrderOtherPaymentMethodCancelled(): void
    {
        $this->setFirstTransactionState($this->ids->get('order-1'));
        $this->sendValidRequest($this->ids->get('order-1'), $this->getAvailablePaymentMethodId(1));
        $transactions = $this->getTransactions($this->ids->get('order-1'));
        static::assertCount(2, $transactions);
        $firstTransaction = $transactions->first();
        static::assertNotNull($firstTransaction);
        $lastTransaction = $transactions->last();
        static::assertNotNull($lastTransaction);
        static::assertNotSame($firstTransaction->getId(), $lastTransaction->getId());

        static::assertNotNull($firstTransaction->getStateMachineState());
        static::assertNotNull($lastTransaction->getStateMachineState());