Mastering Test Data — Decimal Numbers

Image for post
Image for post

In order to become a master of testing data sets, you must be able to explain to any person in the world, how is test data stored and manipulated in the computer. We will start with decimal data. The post is aligned with the Black Box Software Testing Foundations course (BBST) designed by Rebecca Fiedler, Cem Kaner, and James Bach.

When you agree with your boss your payment compensation, that payment value is encoded using decimal number digits:

1, 2, 3, 4, 5, 6, 7, 8, 9, 0

We have ten fingers on our hands. So first counting was using our fingers. Decimal refers to 10. All decimal numbers are represented using base 10 arithmetic where every decimal number is represented as the sum of powers of 10.

We start with special case, 1:

Image for post
Image for post

And here is how we represent a decimal number with boxes approach:

Image for post
Image for post

Originally published at https://blog.tentamen.eu on November 1, 2019.

Written by

Founder of Tentamen, software testing agency.

Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store