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- Boundary Value Analysis Test Case Design Technique
Skip to Main Content. A not-for-profit organization, IEEE is the world's largest technical professional organization dedicated to advancing technology for the benefit of humanity. Use of this web site signifies your agreement to the terms and conditions. Equivalence class partitioning and boundary value analysis - A review Abstract: The purpose of this paper is to carry out a detailed review on the plethora of information available on two testing techniques which fall under functional testing methodology.
Boundary Value Analysis Test case design technique is one of the testing techniques. Boundary value analysis BVA is based on testing the boundary values of valid and invalid partitions. The Behavior at the edge of each equivalence partition is more likely to be incorrect than the behavior within the partition, so boundaries are an area where testing is likely to yield defects. Every partition has its maximum and minimum values and these maximum and minimum values are the boundary values of a partition. A boundary value for a valid partition is a valid boundary value.
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Equivalence partitioning or equivalence class partitioning ECP  is a software testing technique that divides the input data of a software unit into partitions of equivalent data from which test cases can be derived. In principle, test cases are designed to cover each partition at least once. This technique tries to define test cases that uncover classes of errors, thereby reducing the total number of test cases that must be developed. An advantage of this approach is reduction in the time required for testing software due to lesser number of test cases. Equivalence partitioning is typically applied to the inputs of a tested component, but may be applied to the outputs in rare cases. The equivalence partitions are usually derived from the requirements specification for input attributes that influence the processing of the test object.
Software Testing is imperative for a bug-free application; this can be done manually or even automated. Although automation testing reduces the testing time, manual testing continues to be the most popular method for validating the functionality of software applications. Here, we are explaining the most important manual software testing techniques. Software Testing Techniques are basically certain procedures which help every software development project improve its overall quality and effectiveness. It helps in designing better test cases, which are a set of conditions or variables under which a tester will determine whether a system under test satisfies requirements or works correctly. Different testing techniques are implemented as a part of the testing process to improve the effectiveness of the tests. Black Box Test Design is defined as a testing technique in which functionality of the Application Under Test AUT is tested without looking at the internal code structure, implementation details and knowledge of internal paths of the software.
Boundary value analysis is a software testing technique in which tests are designed to include representatives of boundary values in a range. The idea comes from the boundary. Given that we have a set of test vectors to test the system, a topology can be defined on that set. Those inputs which belong to the same equivalence class as defined by the equivalence partitioning theory would constitute the basis. Given that the basis sets are neighbors , there would exist a boundary between them. The test vectors on either side of the boundary are called boundary values. In practice this would require that the test vectors can be ordered, and that the individual parameters follows some kind of order either partial order or total order.
Boundary Value Analysis Test Case Design Technique
Boundary value analysis is a technique to test boundary value between valid and invalid partitions in test case design. Following a brief explanation, it will become easy for you to understand how test cases are designed based upon these techniques. Boundary value analysis is another black box test design technique and it is used to find the errors at boundaries of input domain rather than finding those errors in the center of input. Equivalence Partitioning and Boundary value analysis are linked to each other and can be used together at all levels of testing. Based on the edges of the equivalence classes, test cases can then be derived.
Practically, due to time and budget considerations, it is not possible to perform exhausting testing for each set of test data, especially when there is a large pool of input combinations. Boundary testing is the process of testing between extreme ends or boundaries between partitions of the input values. Equivalence Partitioning or Equivalence Class Partitioning is type of black box testing technique which can be applied to all levels of software testing like unit, integration, system, etc. In this technique, input data units are divided into equivalent partitions that can be used to derive test cases which reduces time required for testing because of small number of test cases. We cannot test all the possible values because if done, the number of test cases will be more than
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