Boundary Value Analysis And Equivalence Partitioning Pdf

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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.

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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. Similarly a boundary value for an invalid partition is an invalid boundary value. Tests can be designed to cover both valid and invalid boundary values.

A Comparative Analysis On Equivalence class partitioning And Boundary value analysis

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Boundary value analysisand Equivalence Class Partitioning both are test case design techniques in black box testing. In this article we are covering “What is.


Boundary Value Analysis and Equivalence Partitioning Testing

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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.

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-value analysis

Equivalence partitioning or equivalence class partitioning ECP [1] 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.

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.


This tutorial demonstrates use of Equivalence partitioning and boundary value analysis with an simple example.


Equivalence partitioning

Black Box Test Design Technique

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