A Groovy-based Domain-Specific Language for Digital Payment System End-to-End Testing

The business-critical nature of digital payment systems demands extensive end-to-end testing, as these systems often integrate many different actors. As the number of test cases multiplies, testing becomes increasingly time-consuming and costly to carry out. This thesis presents an automated testing framework to support the execution of highly parameterized end-to-end test flows. The solution integrates multiple technologies: based on the Java platform, it employs Selenium WebDriver for browser automation, JUnit as the test engine and reporting infrastructure, and a custom Domain-Specific Language implemented in Groovy that serves as a builder for a predefined set of test cases. The DSL allows users to easily configure the parameters of each test scenario, from payment card details to target environment settings. The framework demonstrates significant improvements in both testing efficiency and user experience, resulting in reduced operational costs and enhanced test maintenance.