Boundary Value Analysis Test Case Design

 Boundary value analysis :

Boundary value analysis is a software testing technique that is used to design test cases that test the boundaries of the input domain of a system. The goal of boundary value analysis is to detect defects that may occur at the boundaries of the input domain, such as errors in input validation or processing.

Process of Boundary value analysis:

• The process of boundary value analysis starts by identifying the input domain of the system and determining the minimum and maximum values for each input. 

• Test cases are then designed to test the system with inputs at the minimum, just above the minimum, just below the maximum, and at the maximum values.

• In addition to the minimum and maximum values, test cases should also be designed to test the system with inputs that are just outside the valid range. 

• This will help to detect defects in the input validation of the system.

Example of Boundary value analysis:

For example, if a system accepts integers as input and the valid range is between 1 and 100, test cases should be designed to test the system with inputs of 0, 1, 2, 99, 100 and 101. 

This will help to detect defects in the input validation of the system, as well as defects that may occur at the boundaries of the input domain.

Boundary value analysis is an effective technique for creating test cases that will achieve good test coverage and detect defects. It is especially useful for testing systems that have a large input domain or that accept a wide range of input values.

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Summary:

In summary, Boundary value analysis is a software testing technique that is used to design test cases that test the boundaries of the input domain of a system. The goal of boundary value analysis is to detect defects that may occur at the boundaries of the input domain, such as errors in input validation or processing. It is an effective technique for creating test cases that will achieve good test coverage and detect defects in systems that have a large input domain or that accept a wide range of input values.