Test Point Analysis (TPA) is a technique used to estimate the effort required for software testing. It helps in determining the resources, such as the number of test cases, test data, and time, needed to thoroughly test a software system. TPA is often used in the context of mainframe or large-scale software systems.
Here’s how Test Point Analysis typically works:
- Function Point Counting: TPA starts with a function point analysis, which quantifies the functionality of the software system. Function points are units of measurement that represent the functionality provided by the software. They are categorized into different types, such as internal logical files, external interface files, external inputs, external outputs, and external inquiries.
- Complexity Factors: Each function point is assigned a complexity factor to account for the complexity and intricacy of the function. These factors may be based on the number of inputs and outputs, the complexity of data processing, user interactions, and more.
- Test Points: Once the function points and their complexity factors are determined, the result is converted into “test points.” Test points are a measure of the testing effort required to verify and validate the software functionality. The specific conversion rate from function points to test points may vary depending on the organization and the context.
- Resource Estimation: Test points are then used to estimate the testing resources required, including the number of test cases, test data, and testing hours. This estimation is based on historical data and industry standards.
Test Point Analysis can help organizations plan and allocate resources for testing more accurately, especially in large and complex software projects. It provides a structured way to estimate the scale of testing work required. However, it’s essential to remember that TPA is just one of many methods for estimating testing effort, and its accuracy can vary depending on the accuracy of the initial function point analysis and the specific factors used in the conversion to test points.