Book Image

Software Test Design

By : Simon Amey
Book Image

Software Test Design

By: Simon Amey

Overview of this book

Software Test Design details best practices for testing software applications and writing comprehensive test plans. Written by an expert with over twenty years of experience in the high-tech industry, this guide will provide you with training and practical examples to improve your testing skills. Thorough testing requires a thorough understanding of the functionality under test, informed by exploratory testing and described by a detailed functional specification. This book is divided into three sections, the first of which will describe how best to complete those tasks to start testing from a solid foundation. Armed with the feature specification, functional testing verifies the visible behavior of features by identifying equivalence partitions, boundary values, and other key test conditions. This section explores techniques such as black- and white-box testing, trying error cases, finding security weaknesses, improving the user experience, and how to maintain your product in the long term. The final section describes how best to test the limits of your application. How does it behave under failure conditions and can it recover? What is the maximum load it can sustain? And how does it respond when overloaded? By the end of this book, you will know how to write detailed test plans to improve the quality of your software applications.
Table of Contents (21 chapters)
Part 1 – Preparing to Test
Part 2 – Functional Testing
Part 3 – Non-Functional Testing
Appendix – Example Feature Specification

Load test design

While some aspects of testing, such as exploratory and user experience testing, require manual steps, most testing should be automated, and some, such as load testing, absolutely require it. There are many tools available to produce these kinds of requests, such as LoadNinja or WebLOAD, so if they are suitable for your application, I recommend using one of those to get started quickly and see what is possible.

If your application requires other protocols or you want more control over the load test behavior, you can prepare your own scripts. While they may appear as simple as looping through some fixed behaviors, writing a good load script is deceptively complex, so check on the plugins and extensions available in other tools. Many are also open source, so you can take a branch to customize them.

First, we will consider the case of a client-server architecture in which you are load testing the server, such as a web application or mobile application connecting...