Fintech Test Automation with DevAssure - A Step-by-Step Guide
Why FinTech Testing Needs to Be Smarter
Testing is critical in the FinTech space, where even minor bugs in transaction flows or computations can lead to trust erosion, financial losses, or compliance failures. Given the high volume of financial data, third-party integrations, and regulatory requirements, QA in FinTech must go beyond basic UI or API checks—it must validate correctness, and stability at scale.
This guide walks you through how DevAssure, a SOC2-compliant AI-driven test automation platform, simplifies FinTech testing while enabling deep validations—visually, functionally, and across data formats like Excel and CSV.
What is FinTech testing?
Financial technology or FinTech, refers to the use of technology to provide financial products and services, like online banking, online lending platforms, digital payment system, robo-advisors, and cryptocurrency exchanges. FinTech testing is the process of validating these digital solutions, ensuring their security, reliability and functionality. In order to meet customer expectations and prevent customer churns, its important for testers in FinTech to focus on the accuracy and the functionality of the services being provided. The dynamic nature of FinTech presents unique challenges for quality assurance teams. With FinTech solutions it is important to perform repeated and rigorous tests and cover all possible scenarios during every release cycle.
One of the key challenges with testing FinTech applications is the ability to perform repetitive but essential tests, at a faster rate. Additionally, FinTech applications connect to multiple systems and platforms, and testing these different points of integrations manually is again a challenge and time consuming, thereby slowing down the release cycles. By automating such tasks, companies can identify issues in the development cycle, improve test coverage, and finally go to market faster with higher quality.
This is where DevAssure comes in.
What is DevAssure?
DevAssure is a unified no-code AI-driven test automation platform tailored for modern applications, including financial and banking products. It supports end-to-end automation for web, mobile, and APIs—all from one platform—with built-in support for computations, visual validations, and data comparisons.
DevAssure is also SOC2 compliant, making it enterprise-ready and secure for regulated industries like finance.
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Key Features for FinTech Test Automation
Built-in Libraries for Complex Calculations
DevAssure offers a comprehensive set of built-in Math functions, streamlining complex computations and empowering users to perform calculations effortlessly. This can be used when you would need to compute specific data based on a formula, and compare it against an API response, or validate the UI in the FinTech application.
Excel and CSV File Comparison
Need to compare outputs across thousands of rows or validate exported reports? DevAssure supports both Excel and CSV-based data validation—ideal for reconciliation use cases like:
- Matching transaction logs
- Validating interest payouts
- Verifying tabular report exports
With DevAssure's Library for reading and writing csv files, thousands of data downloaded as CSV from the FinTech Application can be validated for accuracy. Since DevAssure is a low code automation tool, all of these data validations and data transformation validations can be automated within a few minutes.
Multi-Source Data Validation
Use DevAssure to download data from multiple systems (e.g., UI + API + database + Excel) and compare them against each other—all within one test case. This helps detect inconsistencies in financial reports, audit logs, or integration syncs.
Visual Regression Testing for Dashboards
Visual testing, also known as visual regression testing, focuses on verifying the visual aspects of a web application. It ensures that the UI's appearance remains consistent across different development stages and doesn't suffer unintended changes. DevAssure allows you to compare screenshots captured during test executions with baseline snapshots, highlighting any visual discrepancies. This is specifically useful when validating data visualizations in FinTech Applications.
Validate integration apis to third party services
DevAssure provides an extensive suite of built-in actions and libraries designed to query and validate network logs. This functionality enables seamless validation of external API calls made by the application under test, enhancing test accuracy and simplifying the process of network-related validations.
SOC2 Compliance
DevAssure is SOC2 compliant, ensuring secure data handling, role-based access controls, and audit trails—aligned with financial regulatory needs.
NPM Library Support
Extend your automation with NPM libraries, now supported in DevAssure via the new Libraries section in project preferences. Bring in external modules for encryption, parsing, or formatting to support even the most custom workflows.
Real Example: Automating HDFC's EMI Calculator
Consider HDFC's home loan EMI calculator - https://www.hdfc.com/home-loan-emi-calculator.
The aim here is to validate the monthly interest value displayed on the page, based on the inputs for Principal, Tenure and Rate of Interest.
Step 1 - Record the flow and validation
Using DevAssure's recorder, the actions to select the values from the slider can be recorded.
Learn more about DevAssure's Recorder.
Once the recording is done, repetitive actions if any can be extracted as functions, so that the same set of steps can be used across different test cases. This helps make the test automation modular and easy to maintain.
Learn more about creating and using functions.
Step 2 - Create functions for calculating monthly interest
DevAssure has predefined libraries for various formula based computations while also providing the ability to format the output based on the application's needs.
Here are a list of the different predefined libraries for computations available within DevAssure -
First, let's create a function to calculate the monthly EMI
- As per the screenshot provided, all you have to do is add the formula
- Define the arguments for the variables provided in the formula along with the data type
- Provide the values for any of the optional fields (Absolute value to be returned, how many decimal points to be truncated in the output, upto how many decimal points should the output be rounded off to)
- For this function, we used the Math Formula and not the Math Formula with Formatting, because we will be creating another function to format the output, so that it can be used as a generic function for all the numerical data that needs to be validated.
The next step is to create a function to format the output based on the requirements
In this case the requirement is to truncate all the decimal points, show the separations between the digits based on IN locale and add a prefix to the output. Here's how you can do it with DevAssure, it's as simple as keying in a few values for the fields provided to format the number.
Similar functions could be created for various other computations as well.
Step 3 - Add an action to visually validate the pie chart
DevAssure requires a reference baseline snapshot corresponding to the test step for executing visual testing. On first execution, DevAssure will generate this baseline snapshot. Subsequent runs will compare against the reference.
Learn more about Visual Regression Testing with DevAssure.
Here's how the final automated test would look like in DevAssure -
Why FinTech Teams Choose DevAssure
| Feature | DevAssure Advantage |
|---|---|
| Accuracy in Computation | Built-in math functions & formatting |
| Data Validations | Excel & CSV support for tabular comparisons |
| Multi-layer Testing | UI + API + File + Visual validations in one platform |
| Fast Automation | No-code recorder, reusable functions, AI-powered steps |
| Secure by Design | SOC2 compliance + on-prem deployment options |
| Customizable Workflows | NPM library support and data-driven test orchestration |
Conclusion
DevAssure empowers QA teams in FinTech to test smarter, faster, and more securely. Whether it's validating complex financial logic, verifying exported reports, or testing dashboards, DevAssure's unified platform delivers high coverage with low maintenance.