tatsuhirotsuchiya / KTK

Covering array generator for combinatorial testing

KTK: A Tool for Constructing Pairwise Covering Test Suites (Covering Arrays)

Overview

KTK is a tool for generating covering arrays which can be used as test suites for all-pairs testing.

Description

This tool implements the algorithm proposed by:

• Noritaka Kobayashi, Tatsuhiro Tsuchiya, and Tohru Kikuno, A New Method for Constructing Pair-Wise Covering Designs for Software Testing, Information Processing Letters, Vol.81, No.2, pp.85-91, January 2002.

The algorithm constructs test suites for pair-wise testing, that is, covering arrays of strength 2, based on an algebraic approach.

Usage

For example, command program 4x2 3x3 2x1 outputs a pairwise testing suite for the case of 2 4-valued, 3 3-valued, and 1 2-valued parameters.

'-1' in the output represents the 'don't care' value.

Here is the output for the above example.

no of parameters 6
ranges
 4  4  3  3  3  2
values
 0  0  0  0  0  0
 1  1  1  1  1  1
 2  2  2  2  2 -1
 3  3  0  1  2 -1
 0  1  1  2  0 -1
 1  0  2  0  1 -1
 2  3  0  2  1 -1
 3  2  1  0  2 -1
 0  2  2  1  0 -1
 1  3 -1 -1 -1 -1
 2  0 -1 -1 -1 -1
 3  1 -1 -1 -1 -1
 0  3 -1 -1 -1 -1
 1  2 -1 -1 -1 -1
 2  1 -1 -1 -1 -1
 3  0 -1 -1 -1 -1
 1  1  1  1  1  1
 2  2  2  2  2 -1
 0  0  1  1  1 -1
 1  1  2  2  2  0
 2  2  0  0  0  1
 0  0  2  2  2  1
 1  1  0  0  0 -1
 2  2  1  1  1  0
 3  3  0  0  0  0
 3  3  1  1  1  1
 3  3  2  2  2 -1
size 27

Licence

This tool is free software under the MIT license.

Author

Tatsuhiro Tsuchiya