All About Testing A Fintech Application

Deeksha Agarwal
6 min readMay 11, 2022

In today’s scenario, software testing has become an important entity across every domain for the benefits it offers. We have already explored a lot about software testing in general in our post need of software testing.

So, this time we decided to delve deeper into a niche domain, more specifically in Fintech Application domain.

In this post we will explore testing challenges specific to Fintech domain applications.

The Domain And The Application

Before understanding how one can test a fintech application, it is necessary to understand how the sector works so as to get detailed knowledge on how one can test and what all need to be tested.

Characteristics of a Fintech application:

  1. Multi-tier functionality: On a fintech application, thousands of concurrent sessions are being run at a particular instant hence it supports multi-tier functionality.
  2. Large-scale integration: A fintech application usually integrates with numerous other applications including third party vendors for transactions, user accounts, bill pay utility, etc.
  3. Multiple transactions are happening at an instant on a fintech application thus having a high rate of transactions per second.
  4. Huge transactions are being made every second and that needs to secure hence, security becomes a major characteristic in any fintech software.
  5. Huge data calls for the need of massive storage system.
  6. Data being highly confidential and important is equipped with disaster management.
  7. Day to day transactions’ track is kept in a recording section.
  8. Real time processing
  9. Batch processing
  10. Solid troubleshooting for customer issues.
  11. Various users from various locations access the same application hence, it should support multilingual users.
  12. Fast and secure transactions

As a fintech application possess numerous characteristics so it requires a solid end to end testing methodology to ensure that your fintech application works flawlessly.

Note: Markdown to HTML Converter - HTML (Hypertext Markup Language) is a standard for marking up content on the Internet so that it displays correctly in a web browser. The usage of technologies like Cascading Style Sheets and programming languages like JavaScript can “improve” it. A Markdown file is a plain text file with formatting symbols that can be used to make text bold, define headers and indentation, or construct lists.

How Testers See The Workflow Of A Basic Fintech Application?

Like any software testing process, fintech companies also follow the standard 7 step process of testing.

Basic Workflow of a FinTech Application

We will not go into detail on generic process right now, just special considerations related to Fintech organizations.

Note: XML Prettify Online - The XML Prettify utility makes it easy to print data files written in the Extensible Markup Language (XML). Indentation and the number of spaces used each indentation level can also be customised.

Requirement Gathering and Review

This is the initial phase in any fintech application involving the basic documentation of requirements. This documentation is done either as functional requirements gathering or as use cases.

This requirement gathering is followed by requirements review where the QA engineers cross check if any of the business workflows is violated.

Business Scenarios In Fintech Operations

On the basis of business requirements, QA engineers derive the business scenarios from the requirement documentation. The challenge here is to not miss any scenario and figuring out High Level and Low level scenarios. Usually high level scenarios are preferred over low level detailed test cases because it is easier for business analysts to review them.

Knowledge of the business domain plays a major role while preparing business scenarios and fintech test cases.

In a single bank with multiple products around insurance, banking, and investment, there are multiple different business scenarios, as shown in the image below.

Business Scenarios in FinTech Domain

From the image above you can easily figure out that there can be many permutations and combinations to create business scenarios.

For example: A simple use case of opening a Fixed Deposit account in a bank will have various business workflows like opening an account, depositing the amount, transfers, monitoring, interests, etc.

Hence testing every possible business scenario becomes important.

Note: CSS Prettify - CSS coding can be sloppy since the developer cannot devote his whole attention to the code’s aesthetics while concentrating on the technical requirements. CSS Prettify is a free web tool that beautifies your CSS code. To make it more readable, enter your CSS code to beautify, format, and prettify it.

Functional Testing

Functional testing of a fintech application is a major challenge in itself, that is worthy of its own independent post. Simple cross browser testing in fintech application is a major issue.

The process of functional testing of the fintech application is very much different from the usual software testing scenarios as it involves monetary transactions and sensitive data hence every possible test case should be taken into consideration.

It becomes important for the testers to test for interactions among different components and at the same time anticipate the risks in any unknown territory like for example in a new cloud deployment or a new on-premise deployment.

Multiplatform Testing: As fintechs run on multiple different environments hence it becomes important for them to test for cross browser compatibility. As there may be some systems that can have components that may be spanning over some other OSes still there may arise the need to test the whole system again. Be it any OS like Unix, Linux, Windows, Mac, android and iOS mobile apps, you need to ensure compatibility for all.

You can use LambdaTest to ensure cross browser compatibility of your fintech application.

Database Testing

Testing the integrity of databases is as important as it is to test for functions since fintech applications involves complex transactions at database level. Testing for database in a fintech software includes:

  • Testing data integrity
  • Data loading testing
  • Database migration testing
  • Testing for various triggers
  • Testing for rules

Well, if you talk about creating a realistic dataset in any e-commerce website, it’s quite simple to copy the database but in case of fintech applications it’s a whole new game!

You can not just copy-paste the dataset as it is highly confidential and security comes as a major concern. Moreover, there are so many dependencies in a fintech application that creating realistic data requires cross-checking and therefore it limits the system.

The only way that comes to rescue is to create specialized robots which can simulate account creation with all the detailed steps.

Security Testing

Now we get to the biggest concern of a Fintech application, Security.

Since fintech applications deals with money transfers, sensitive financial data, third party payment gateways, etc and are highly prone to hackers stealing sensitive data so Security testing in a fintech domain holds an enormous value.

If you have read our post on blockchains, you’d know how we discussed simple bank transaction process.

Latest technologies and techniques like cloud deployment, 2-factor authentication, microservice architecture, etc, make the process of Security a little bit easier. However these same tech idea introduce their own set of issues and precautions.

  1. Multiple-factor authentications: The demands for such security concerns give rise to multiple factor authentications. These authentications makes the security process more complex.

Say, you replace a simple username/password entry by fingerprint verification or text or email verification or some card verification don’t you think that it’s gonna add complexity to the testing process?

Of course, YES! This may give rise to huge complexities in the testing process and complicate the testing process further with more and more test cases.

2. API Security: I would suggest you to track dependencies and vulnerabilities in the underlying components of a fintech application. So always make sure that whenever you have any of the vulnerable library in that case always keep an alternative tested solution for that vulnerability.

User Acceptance Testing

User acceptance testing comes as the final testing stage in every development cycle.

In user acceptance testing, the application is tested for its proper functioning as per the requirements defined by the customer. From its proper functioning to security, everything is tested considering every possible scenario from a user’s point of view.

MUST READ: Blog post on Acceptance Testing

This is the basic fintech application as seen from tester’s point of view. Majorly testing plays an important role at every stage in the application’s development life cycle be it functional, user acceptance, or security testing. Even today testing has a long way to go in fintech sector.



Deeksha Agarwal

Deeksha Agarwal is in Product Growth at LambdaTest and is also a passionate tech blogger and product evangelist.