program代写、Java程序设计代做

日期：2024-06-12 08:37

Unit testing an e-commerce application: Java version

Hackathon, Foundations of software Testing, Spring 2024

The Order Processor is a system responsible for handling the processing of orders in an e-commerce

application. Its main role is to ensure that an order can be successfully completed by verifying

payment details and updating the inventory. Its primary function is to process orders received from

customers. This involves validating payment details (like credit card number and amount) and

ensuring that the payment can be successfully completed. After a successful payment, the Order

Processor then attempts to update the inventory. This step ensures that the ordered items are available

in the required quantities and that the stock levels are adjusted accordingly. If the payment processing

fails, the order processing is halted, and a failure response is returned. If the inventory update fails

after a successful payment, the system initiates a refund process to reverse the payment. This ensures

that customers are not charged for orders that cannot be fulfilled due to stock issues.

Order Processor integrates closely with the Payment and Inventory Services, two crucial components

of an e-commerce applications for maintaining transaction integrity and ensuring a smooth ordering

process for customers. A typical successful order involves receiving an order, successfully processing

the payment, updating the inventory, and confirming the order. However, payments that cannot be

processed result in a failed order without proceeding to inventory updates. Lastly, when the payment

is successful, but the inventory cannot be updated (e.g., insufficient stock), the system triggers a

refund and mark the order as failed.

You are a team of developers working on the implementation and testing of a class called

OrderProcessor. This class is responsible for processing orders in an e-commerce application.

public class OrderProcessor {

private PaymentService paySrv;

private InventoryService invSrv;

public OrderProcessor(PaymentService paySrv, InventoryService invSrv) {

this.paySrv = paySrv;

this.invSrv = invSrv;

boolean processOrder(PaymentDetails payDtls, List<Item> items){

// Code to process the order

}

}

An order consists of information about the payment (paymentDetails), such as credit card number

and amount to be paid, and a list of items objects, each representing a product to be purchased,

including the product ID and quantity. They are passed as parameters to processOrder for being

processed, and are defined by the following objects:

public class PaymentDetails {

private String creditCardNumber;

private int amount;

// Code for getters and constructors

}  

public class Item {

private String productId;

private int quantity;

// Code for getters and constructors

}

The method processOrder returns true if the order is successfully processed, and it returns false

if the order processing fails. The method does not throw any exceptions and handles all failures

internally by returning false.

The OrderProcessor class interacts with two other classes: PaymentService and

InventoryService of which we only have the interfaces:

public interface PaymentService {

boolean processPayment(PaymentDetails payDtls);

void refundPayment(PaymentDetails payDtls);

}

import java.util.List;

public interface InventoryService {

boolean updateInventory(List<Item> items);

}

The expected behaviour of the method processOrder is as follows:

• It first attempts to process the payment using the PaymentService.

• If the payment is successfully processed, the method then attempts to update the inventory

using the InventoryService.

• If the inventory update is successful, the method returns true, indicating the order was

processed successfully.

• If the payment processing fails, the method returns false.

• If the inventory update fails after the payment has been processed, the method:

o Calls PaymentService.refundPayment to refund the payment.

o Returns false.

Your task is to:

1. Complete the implementation of the classes OrderProcessor, PaymentDetails, and Item.

2. Design test cases using the interface-based approach and one of the related coverages criteria

3. Design test cases verifying the interactions of OrderProcessor with PaymentService and

InventoryService.

4. Design to two more extra test cases using metamorphic testing to validate that certain

properties hold true when inputs are transformed.

5. Implement the necessary scaffolding to run all your test cases for an OrderProcessor class.

Unit testing an e-commerce application: C++ version

Hackathon, Foundations of software Testing, Spring 2024

The Order Processor is a system responsible for handling the processing of orders in an e-commerce

application. Its main role is to ensure that an order can be successfully completed by verifying

payment details and updating the inventory. Its primary function is to process orders received from

customers. This involves validating payment details (like credit card number and amount) and

ensuring that the payment can be successfully completed. After a successful payment, the Order

Processor then attempts to update the inventory. This step ensures that the ordered items are available

in the required quantities and that the stock levels are adjusted accordingly. If the payment processing

fails, the order processing is halted, and a failure response is returned. If the inventory update fails

after a successful payment, the system initiates a refund process to reverse the payment. This ensures

that customers are not charged for orders that cannot be fulfilled due to stock issues.

Order Processor integrates closely with the Payment and Inventory Services, two crucial components

of an e-commerce applications for maintaining transaction integrity and ensuring a smooth ordering

process for customers. A typical successful order involves receiving an order, successfully processing

the payment, updating the inventory, and confirming the order. However, payments that cannot be

processed result in a failed order without proceeding to inventory updates. Lastly, when the payment

is successful, but the inventory cannot be updated (e.g., insufficient stock), the system triggers a

refund and mark the order as failed.

You are a team of developers working on the implementation and testing of a class called

OrderProcessor. This class is responsible for processing orders in an e-commerce application.

#include "PaymentService.h"

#include "InventoryService.h"

#include "PaymentDetails.h"

#include "Item.h"

#include <vector>

class OrderProcessor {

private:

PaymentService* paySrv;

InventoryService* invSrv;

public:

OrderProcessor::OrderProcessor(PaymentService* paySrv, InventoryService*

invSrv){

this->paySrv = paySrv;

this->invSrv = invSrv;

}

bool processOrder(const PaymentDetails& payDtls, const std::vector<Item>&

items) {

// Code to process the order

}

};

An order consists of information about the payment (paymentDetails), such as credit card number

and amount to be paid, and a list of items objects, each representing a product to be purchased,

including the product ID and quantity. They are passed as parameters to processOrder for being

processed, and are defined by the following objects (the implementation for constructors and getters

needs to be inserted). #include <string>

class PaymentDetails {

private:

std::string creditCardNumber;

int amount;

public:

// code for Getters and Constructor

};

#include <string>

class Item {

private:

std::string productId;

int quantity;

public:

// Code for Getters and Constructor

};

The method processOrder returns true if the order is successfully processed, and it returns false

if the order processing fails. The method does not throw any exceptions and handles all failures

internally by returning false.

The OrderProcessor class interacts with two other classes: PaymentService and

InventoryService of which we only have the interfaces. The interfaces are defined using pure virtual

functions, with = 0 indicating that the functions are pure virtual and must be overridden by derived

classes. The PaymentDetails and Item classes are assumed to be defined elsewhere.

#include "PaymentDetails.h"

class PaymentService {

public:

virtual ~PaymentService() = default;

virtual bool processPayment(const PaymentDetails& payDtls) = 0;

virtual void refundPayment(const PaymentDetails& payDtls) = 0;

};

#include <vector>

#include "Item.h"

class InventoryService {

public:

virtual ~InventoryService() = default;

virtual bool updateInventory(const std::vector<Item>& items) = 0;

};

The expected behaviour of the method processOrder is as follows:

• It first attempts to process the payment using the PaymentService.

• If the payment is successfully processed, the method then attempts to update the inventory

using the InventoryService. • If the inventory update is successful, the method returns true, indicating the order was

processed successfully.

• If the payment processing fails, the method returns false.

• If the inventory update fails after the payment has been processed, the method:

o Calls PaymentService.refundPayment to refund the payment.

o Returns false.

Your task is to:

1. Complete the implementation of the classes OrderProcessor, PaymentDetails, and Item.

2. Design test cases using the interface-based approach and one of the related coverages criteria

3. Design test cases verifying the interactions of OrderProcessor with PaymentService and

InventoryService.

4. Design to two more extra test cases using metamorphic testing to validate that certain

properties hold true when inputs are transformed.

5. Implement the necessary scaffolding to run all your test cases for an OrderProcessor class.

Unit testing an e-commerce application: Python version

Hackathon, Foundations of software Testing, Spring 2024

The Order Processor is a system responsible for handling the processing of orders in an e-commerce

application. Its main role is to ensure that an order can be successfully completed by verifying

payment details and updating the inventory. Its primary function is to process orders received from

customers. This involves validating payment details (like credit card number and amount) and

ensuring that the payment can be successfully completed. After a successful payment, the Order

Processor then attempts to update the inventory. This step ensures that the ordered items are available

in the required quantities and that the stock levels are adjusted accordingly. If the payment processing

fails, the order processing is halted, and a failure response is returned. If the inventory update fails

after a successful payment, the system initiates a refund process to reverse the payment. This ensures

that customers are not charged for orders that cannot be fulfilled due to stock issues.

Order Processor integrates closely with the Payment and Inventory Services, two crucial components

of an e-commerce applications for maintaining transaction integrity and ensuring a smooth ordering

process for customers. A typical successful order involves receiving an order, successfully processing

the payment, updating the inventory, and confirming the order. However, payments that cannot be

processed result in a failed order without proceeding to inventory updates. Lastly, when the payment

is successful, but the inventory cannot be updated (e.g., insufficient stock), the system triggers a

refund and mark the order as failed.

You are a team of developers working on the implementation and testing of a class called

OrderProcessor. This class is responsible for processing orders in an e-commerce application. Since

Python is not a statically typed language we use typing.List to indicate that the items parameter is

expected to be a list of Item objects. Also, the pass statement is to leave the implementation to you.

from typing import List

class OrderProcessor:

def __init__(self, paySrv, invSrv):

"""

Constructor for OrderProcessor class.

Args:

paySrv: PaymentService object.

invSrv: InventoryService object.

"""

self.paySrv = paySrv

self.invSrv = invSrv

def processOrder(self, payDtls, items):

"""

Method to process the order.

Args:

payDtls: PaymentDetails object.

items: List of Item objects.

Returns:

bool: True if order processing is successful, False otherwise.

"""

pass

An order consists of information about the payment (paymentDetails), such as credit card number

and amount to be paid, and a list of items objects, each representing a product to be purchased,

including the product ID and quantity. They are passed as parameters to processOrder for being

processed, and are defined by the following objects, where the class definitions include the __init__

method for constructors and @property decorators for getters:

class PaymentDetails:

def __init__(self, credit_card_number, amount):

pass

@property

def credit_card_number(self):

pass

@property

def amount(self):

pass

class Item:

def __init__(self, product_id, quantity):

pass

@property

def product_id(self):

pass

@property

def quantity(self):

pass

The method processOrder returns true if the order is successfully processed, and it returns false

if the order processing fails. The method does not throw any exceptions and handles all failures

internally by returning false.

The OrderProcessor class interacts with two other classes: PaymentService and

InventoryService of which we only have the interfaces. The abc module is used below to define

abstract base classes. The abstractmethod decorator ensures that derived classes must implement

the abstract methods. The PaymentDetails and Item classes are assumed to be defined elsewhere.

from abc import ABC, abstractmethod

class PaymentService(ABC):

@abstractmethod

def process_payment(self, pay_dtls):

pass

@abstractmethod

def refund_payment(self, pay_dtls):

pass

from abc import ABC, abstractmethod

class InventoryService(ABC):

@abstractmethod

def update_inventory(self, items):

pass  

The expected behaviour of the method processOrder is as follows:

• It first attempts to process the payment using the PaymentService.

• If the payment is successfully processed, the method then attempts to update the inventory

using the InventoryService.

• If the inventory update is successful, the method returns true, indicating the order was

processed successfully.

• If the payment processing fails, the method returns false.

• If the inventory update fails after the payment has been processed, the method:

o Calls PaymentService.refundPayment to refund the payment.

o Returns false.

Your task is to:

6. Complete the implementation of the classes OrderProcessor, PaymentDetails, and Item.

7. Design test cases using the interface-based approach and one of the related coverages criteria

8. Design test cases verifying the interactions of OrderProcessor with PaymentService and

InventoryService.

9. Design to two more extra test cases using metamorphic testing to validate that certain

properties hold true when inputs are transformed.

10. Implement the necessary scaffolding to run all your test cases for an OrderProcessor class.