diff --git a/Test/Unit/Model/Api/GuestAdyenOrderPaymentStatusTest.php b/Test/Unit/Model/Api/GuestAdyenOrderPaymentStatusTest.php
new file mode 100644
index 000000000..427e28b28
--- /dev/null
+++ b/Test/Unit/Model/Api/GuestAdyenOrderPaymentStatusTest.php
@@ -0,0 +1,156 @@
+<?php
+/**
+ *
+ * Adyen Payment module (https://www.adyen.com/)
+ *
+ * Copyright (c) 2025 Adyen N.V. (https://www.adyen.com/)
+ * See LICENSE.txt for license details.
+ *
+ * Author: Adyen <magento@adyen.com>
+ */
+
+namespace Adyen\Payment\Test\Unit\Model\Api;
+
+use Adyen\Payment\Helper\Data;
+use Adyen\Payment\Helper\PaymentResponseHandler;
+use Adyen\Payment\Logger\AdyenLogger;
+use Adyen\Payment\Model\Api\GuestAdyenOrderPaymentStatus;
+use Adyen\Payment\Test\Unit\AbstractAdyenTestCase;
+use Magento\Framework\Exception\NotFoundException;
+use Magento\Quote\Model\MaskedQuoteIdToQuoteIdInterface;
+use Magento\Sales\Api\OrderRepositoryInterface;
+use Magento\Sales\Model\Order;
+use PHPUnit\Framework\MockObject\MockObject;
+
+class GuestAdyenOrderPaymentStatusTest extends AbstractAdyenTestCase
+{
+    protected ?GuestAdyenOrderPaymentStatus $guestAdyenOrderPaymentStatus;
+    protected OrderRepositoryInterface|MockObject $orderRepositoryMock;
+    protected AdyenLogger|MockObject $adyenLoggerMock;
+    protected Data|MockObject $adyenHelperMock;
+    protected PaymentResponseHandler|MockObject $paymentResponseHandlerMock;
+    protected MaskedQuoteIdToQuoteIdInterface|MockObject $maskedQuoteIdToQuoteIdMock;
+
+    protected function setUp(): void
+    {
+        $this->orderRepositoryMock = $this->createMock(OrderRepositoryInterface::class);
+        $this->adyenLoggerMock = $this->createMock(AdyenLogger::class);
+        $this->adyenHelperMock = $this->createMock(Data::class);
+        $this->paymentResponseHandlerMock = $this->createPartialMock(PaymentResponseHandler::class, []);
+        $this->maskedQuoteIdToQuoteIdMock = $this->createMock(MaskedQuoteIdToQuoteIdInterface::class);
+
+        $this->guestAdyenOrderPaymentStatus = new GuestAdyenOrderPaymentStatus(
+            $this->orderRepositoryMock,
+            $this->adyenLoggerMock,
+            $this->adyenHelperMock,
+            $this->paymentResponseHandlerMock,
+            $this->maskedQuoteIdToQuoteIdMock
+        );
+    }
+
+    protected function tearDown(): void
+    {
+        $this->guestAdyenOrderPaymentStatus = null;
+    }
+
+    /**
+     * Assert exception if input quote id does not match with the order's quote id.
+     *
+     * @return void
+     * @throws NotFoundException
+     */
+    public function testGetOrderPaymentStatusQuoteIdMismatch()
+    {
+        $this->expectException(NotFoundException::class);
+
+        $cartId = 'abcdefg123456789abcdef';
+        $quoteId = 75;
+        $orderId = '50';
+        $orderQuoteId = 200;
+
+        $this->maskedQuoteIdToQuoteIdMock->expects($this->once())
+            ->method('execute')
+            ->with($cartId)
+            ->willReturn($quoteId);
+
+        $orderMock = $this->createMock(Order::class);
+        $orderMock->expects($this->once())
+            ->method('getQuoteId')
+            ->willReturn($orderQuoteId);
+
+        $this->orderRepositoryMock->expects($this->once())
+            ->method('get')
+            ->with($orderId)
+            ->willReturn($orderMock);
+
+        $this->guestAdyenOrderPaymentStatus->getOrderPaymentStatus($orderId, $cartId);
+    }
+
+    /**
+     * @return array[]
+     */
+    private static function testDataProvider(): array
+    {
+        return [
+            [
+                'resultCode' => PaymentResponseHandler::AUTHORISED,
+                'expectedResultCode' => PaymentResponseHandler::AUTHORISED
+            ],
+            [
+                'resultCode' => null,
+                'expectedResultCode' => PaymentResponseHandler::ERROR
+            ],
+        ];
+    }
+
+    /**
+     * Assert json result type and check the existence of required response fields
+     *
+     * @dataProvider testDataProvider
+     *
+     * @return void
+     * @throws NotFoundException
+     */
+    public function testGetOrderPaymentStatusSuccess($resultCode, $expectedResultCode)
+    {
+        $cartId = 'abcdefg123456789abcdef';
+        $quoteId = 75;
+        $orderId = '50';
+        $orderQuoteId = 75;
+
+        $this->maskedQuoteIdToQuoteIdMock->expects($this->once())
+            ->method('execute')
+            ->with($cartId)
+            ->willReturn($quoteId);
+
+        $additionalInformation = [
+            'resultCode' => $resultCode
+        ];
+
+        $paymentMock = $this->createMock(Order\Payment::class);
+        $paymentMock->expects($this->once())
+            ->method('getAdditionalInformation')
+            ->willReturn($additionalInformation);
+
+        $orderMock = $this->createMock(Order::class);
+        $orderMock->method('getPayment')->willReturn($paymentMock);
+        $orderMock->expects($this->once())
+            ->method('getQuoteId')
+            ->willReturn($orderQuoteId);
+
+        $this->orderRepositoryMock->expects($this->once())
+            ->method('get')
+            ->with($orderId)
+            ->willReturn($orderMock);
+
+        $result = $this->guestAdyenOrderPaymentStatus->getOrderPaymentStatus($orderId, $cartId);
+
+        // Result should contain error object
+        $this->assertJson($result);
+        $decodedResult = json_decode($result, true);
+        $this->assertArrayHasKey('isFinal', $decodedResult);
+        $this->assertArrayHasKey('resultCode', $decodedResult);
+        $this->assertTrue($decodedResult['isFinal']);
+        $this->assertEquals($expectedResultCode, $decodedResult['resultCode']);
+    }
+}