Software testing boundary values

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Verbal Ability. Interview Questions. Company Questions. Master Quiz. Types of Testing Boundary Value Analysis. What is boundary value analysis in software testing?

Where to use boundary value analysis in software testing? Login Join For Free. All Courses. Spoken English Course. View all Courses. CREO Course. Graphic Designing with Photoshop. Computer Hardware. Live Project in Android with Source Code. How to Use Forums to Ask Questions 2m 2s. Software Testing Myths 8m 1s. Software Testing Principles 7m 16s. Software Testing Terms 8m. More Software Testing Terms 4m 12s. What Are high Level Requirements? Test case design development and cycle closure 5m 56s.

STLC with example 6m 51s. Development Models Software Development Model 3m 40s. Waterfall Model 4m 11s. Iterative Model 5m 9s. Agile Scrum Model 4m 6s. Walkthrough 2m 28s. Code Review 5m 7s. Inspection 2m 9s. Dynamic Testing 4m 42s. Levels of Testing Unit Testing 2m 26s. Incremental Integeration Testing 2m 55s. Integration Testing 2m 41s. System Testing 1m 47s. Alpha Testing 3m 17s. So for the above example, at the minimum we should have the following test cases for boundaries 9, 10, 11 and 48, 49, 50 As a general rule, if you have any input field it should be tested with the following set of data at the minimum.

Boundary value analysis is a methodology for designing test cases that concentrates the software testing effort on cases near the limits of valid ranges. Boundary value analysis is a method which refines equivalence partitioning. Boundary value analysis generates test cases that highlight errors better than equivalence partitioning. The trick is to concentrate software testing efforts at the extreme ends of the equivalence classes.

At those points when the input values change from valid to invalid, errors are most likely to occur. As well, boundary value analysis broadens the portions of the business requirement document used to generate tests. Unlike equivalence partitioning, it takes into account the output specifications when deriving test cases.

Purpose The purpose of boundary value analysis is to concentrate the testing effort on error prone areas by accurately pinpointing the boundaries of conditions e. Applying Boundary Value Analysis To set up boundary value analysis test cases you first have to determine which boundaries you have at the interface of a software component.

This has to be done by applying the equivalence partitioning technique. Boundary value analysis and equivalence partitioning are inevitably linked together. For the example of the month in a date you would have the following partitions In the above example this would be 0 and 1 for the lower boundary as well as 12 and 13 for the upper boundary.

Each of these pairs consists of a "clean" and a "dirty" test case. A "clean" test case should give you a valid operation result of your program. A "dirty" test case should lead to a correct and specified input error treatment such as the limiting of values, the usage of a substitute value, or in the case of a program with a user interface, it has to lead to a warning and a request to enter correct data.