What function does a test design tool serve in the software testing process?

A test design tool primarily functions to assist in the process of generating test inputs from specifications. This means that it helps testers create a set of test cases by translating requirements and specifications into actionable test scenarios. By supporting effective test design, these tools enable testers to derive inputs systematically, ensuring that they cover the necessary aspects of the application under test and meet the specified requirements.

In addition to this core functionality, test design tools may contribute to enhancing the efficiency of the testing process by promoting reusability of test cases and ensuring that all relevant paths and conditions are considered in the test cases. This leads to better coverage and helps in identifying potential flaws early in the development cycle, ultimately improving the quality of the software product.