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Effectiveness of Pair-wise Testing on Logical ExpressionsPowerPoint Presentation

Effectiveness of Pair-wise Testing on Logical Expressions

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## PowerPoint Slideshow about ' Effectiveness of Pair-wise Testing on Logical Expressions' - sahkyo

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Presentation Transcript

Overview

- Introduction
- Fault Types
- Fault Evaluator
- Experiment Results

Introduction

- Effectiveness of pair-wise testing to reveal fault in logical expressions
- Only one previous paper that investigate this Non-specification-based approaches to logic testing for software

Fault Types

- VNF (Variable Negation Fault)
- ORF (Operator Reference Fault)
- VRF (Variable Reference Fault)
- ENF (Expression Negation Fault)
- ASF (Associative Shift Fault)

VNF

- Fault type where Boolean variable x is replaced by !x.
Original expression:

a ∧ (!b ∨ !c) ∧ d ∨ e

Expression with VNF:

!a ∧ (!b ∨ !c) ∧ d ∨ e

ORF

- Fault type where Boolean AND operator is incorrectly used instead of Boolean OR operator or vice versa.
Original expression:

a ∧ (!b ∨ !c) ∧ d ∨ e

Expression with ORF:

a ∨ (!b ∨ !c) ∧ d ∨ e

VRF

- Fault type where Boolean variable x is replaced by another variable y.
Original expression:

a ∧ (!b ∨ !c) ∧ d ∨ e

Expression with VRF:

b∧ (!b ∨ !c) ∧ d ∨ e

ENF

- Fault type where Boolean expression p is replaced by !p.
Original expression:

a ∧ (!b ∨ !c) ∧ d ∨ e

Expression with ENF:

a ∧!(!b ∨ !c) ∧ d ∨ e

ASF

- Fault type where parentheses in Boolean expression is misused.
Original expression:

a ∧ (!b ∨ !c) ∧ d ∨ e

Expression with ENF:

a ∧ !(b ∨ !c) ∧ d ∨ e

Fault Evaluator

- A software tool that can generate faulty Boolean expressions and evaluate those faulty expressions with test sets that are loaded in the software.

Fault Evaluator Steps

- Load in the correct Boolean expressions
- Load in the test cases
- Generate faults (specify which faults or all faults)
- Evaluate
- Fault Evaluator applies the test sets to the original expressions and the faulty expressions.
- If the result from applying the test case to the faulty expression was different from the result obtained from the original expression, then the fault was revealed.

Effectiveness of Pair-wise testing on 5 different sets of expressions

- Percentages of pair-wise testing to reveal faults for each expression set.

Comparison of Pair-wise testing and random testing expressions

- Percentages of Pair-wise and random testing

Pair-wise testing depending on size of expression expressions

- Effectiveness of Pair-wise testing for each expression set

Pair-wise testing depending on size of expression expressions

- Effectiveness of Pair-wise testing for each fault type

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