Payment Gateway Testing Tutorial with Sample Test Cases

A payment gate-way system is an e-commerce application service that approves credit card payment for online purchases. Payment gateways safeguard the credit card details by encrypting sensitive information like credit card numbers, account holder details and so on. This information is passed safely between the customer and the merchant and vice versa.

Modern payment gateways also securely approve payments via debit cards, electronic bank transfers, cash cards, reward points etc.

Payment Gateway Testing Tutorial with Sample Test Cases

In this tutorial we will learn

●     Types of Payment Gateway System

●     Testing Types for Payment Gateway System

●     Test Preparation for Testing Payment Gateway

●     Sample Test Cases for Payment Gateway Testing

●     Things to consider before Buying Gateway Package

Types of Payment Gateway System

●     Hosted Payment Gateway:

●     Hosted payment gateway system direct customer away from e-commerce site to gateway link during payment process. Once the payment is done, it will bring customer back to e-commerce site. For such type of payment you don't need merchant id, example of hosted payment gateway are PayPal, Noche and WorldPay.

●     Shared Payment Gateway:

●     In shared payment gateway, while processing payment customer is directed to payment page and stays on the e-commerce site. Once the payment detail is filled, the payment process proceeds. Since it does not leave the e-commerce site while processing payment, this mode is easy and more preferable, example of shared payment gateway is eWay, Stripe.

Testing Types for Payment Gateway System

Testing for Payment Gateway should include

Functional Testing: It is the act of testing base functionality of the payment gateway. It is to verify whether the application behaves in same way as it is supposed to be like handling orders, calculation, addition of VAT as per the country etc.

Integration: Test integration with your credit card service.

Performance: Identify various performance metrics like highest possible number of users coming through gateways during specific day and converting them to concurrent users

Security: You need to perform a deep security pass for Payment Gateway.

Test Preparation for Testing Payment Gateway

Before you begin testing -

●     Collect proper test data for the dummy credit card number for maestro, visa, master etc.

●     Collect payment gateway information like Google wallet, Paypal or else

●     Collect payment gateway document with error codes

●     Understand the session and parameters passed through application and payment gateway

●     Understand and test the amount related information passed through query string or variable or session

●     Along with payment gateway language check the language of the application

●     Under the various settings of payment gateway like currency format, subscriber data collected.

Sample Test Cases for Payment Gateway Testing

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Test Cases

1

During the payment process try to change the payment gateway language

2

After successful payment, test all the necessary components, whether it is retrieved or not

3

Check what happens if payment gateway stops responding during payment

4

During the payment process check what happens if session ends

5

During the payment process check what happens in back end

6

Check what happens if payment process fails

7

Check the Data-base entries whether they store credit card details or not

8

During payment process check error pages and security pages

9

Check settings of pop-up blocker, and see what happens if pop up blocker is on and off

10

Between payment gateway and application check buffer pages

11

Check on successful payment, a success code is send to the application and a confirmation page is show to the user

12

Verify whether the transaction processes immediately or processing is hand to your bank

13

After successful transaction check if the payment gateway returns to your application

14

Check all format and messages when successful payment process

15

Unless you don't have an authorization receipt from payment gateway, good should not be shipped

16

Inform the owner for any transaction processed through e-mail. Encrypt the content of the mail

17

Check the amount format with currency format

18

Check if each of the payment options are selectable

19

Check if each listed payment option opens the respective payment option according to specification

20

Verify whether the payment gateway defaults to the desired debit/credit card option

21

Verify the default option for debit card shows card selection drop down menu

Things to consider before Buying Gateway Package

●     If you have bought a shopping cart package, find out about its compatibility

●     If shopping gateway package is due, ask the payment gateway provider for a list of supported applications

●     The gateway must offer Address Verification System Protection

●     Find out the types of transaction protection being offered

●     Check what types of debit or credit cards are accepted by your chosen payment gateway

●     Check the transaction fees levied by payment gateway

●     Check whether the gateways collect the payment right on the form or direct to another page to complete the purchase

Use the comments section below to contribute more test cases on Payment Gateway Testing