Comments on: Using Equivalence Partitioning in Software Testing

By: Chris Kenst

Chris Kenst — Thu, 12 Oct 2017 21:57:32 +0000

In reply to Software Testing Magazine. Glad I could be help!

By: Software Testing Magazine

Software Testing Magazine — Thu, 12 Oct 2017 08:15:44 +0000

In reply to Chris Kenst. Thanks for your insightful comment. You are right, equivalence partitioning can apply to all type of tests. It is my own mistake (not the author) as the introduction is not part of the original article, which is in the book part of a section about test design that covers also boundary analysis and other techniques. I have remove the unit testing reference.

By: Chris Kenst

Chris Kenst — Thu, 12 Oct 2017 04:43:04 +0000

I’m not sure why the beginning of this article states equivalence class partitioning “divides the test data of a unit testing case”. This technique can be applied across the spectrum from unit tests to higher level functional tests and using glassbox and blackbox approaches. (Unless the author has some different definition of unit testing case.)

It’s also worth pointing out that this technique goes hand in hand with boundary analysis (combined they are called Domain Testing) because in both your small sampling of input values matter.

If you are interested in Domain Testing (equivalence class partitioning and boundary analysis) I highly recommend Cem Kaner’s book “The Domain Testing Workbook”. It has many examples, starting with the most trivial ones and gradually getting harder to challenge you.

By: Jeremy Dozier

Jeremy Dozier — Fri, 06 Oct 2017 18:39:48 +0000

Excellent introduction to the concept of equivalence partitionning.