Testing Techniques

Boundary Value Analysis

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Learning Outcome(Slide2)

3

Design test cases using BVA

2

Identify boundary values

1

Understand Boundary Value Analysis

Topic Name-Recall(Slide3)

Hook/Story/Analogy(Slide 4)

Transition from Analogy to Technical Concept(Slide 5)

Valid and Invalid Equivalence Classes

Valid and Invalid Equivalence Classes

Produces expected output

System should accept these values

Contains correct and acceptable input values

System should reject these values

Error message should be displayed

Contains incorrect or unacceptable input values

Invalid Equivalence Class

Valid Equivalence Class

Steps to Apply BVA

Identify boundary values

Create test cases using boundary values

Identify input range

Advantages and Limitations of BVA

Advantages

Simple and effective

Finds boundary-related defects

High defect detection rate

Limitations

Usually combined with ECP

Not suitable for complex logic

Only focuses on boundaries

Difference Between ECP and BVA

ECP tests groups of data

Both are black box techniques

BVA tests edges of data

Summary

3

Best used with ECP for effective testing

2

Focuses on boundary values

1

BVA is an important black box testing technique

Quiz

Which of the following is a boundary value for the range 10–50?

A. 25

B. 10

C. 30

D. 40

Quiz-Answer

Which of the following is a boundary value for the range 10–50?

A. 25

B. 10

C. 30

D. 40