Software Testing And Quality Assurance Questions Medium
Boundary value analysis is a software testing technique that focuses on testing the boundaries or limits of input values. It is based on the understanding that errors often occur at the extremes or boundaries of input ranges rather than within the range itself.
The concept of boundary value analysis involves selecting test cases that lie on or near the boundaries of input domains. These boundaries can be minimum and maximum values, as well as values just above or below these limits. By testing these boundary values, it is possible to uncover errors that may not be identified through testing within the range.
The rationale behind boundary value analysis is that if a system works correctly for the extreme values, it is likely to work correctly for values within the range. This technique helps in identifying issues related to data validation, data corruption, and boundary-related errors.
For example, if a software application accepts input values between 1 and 100, boundary value analysis would involve testing values such as 1, 2, 99, and 100. Additionally, values just above and below the boundaries, such as 0, 101, and 98, would also be tested. This approach helps in identifying potential issues that may arise due to incorrect handling of boundary conditions.
Overall, boundary value analysis is an effective technique for identifying defects and ensuring the quality of software by focusing on the boundaries of input values. It helps in improving the robustness and reliability of software systems.