Table of Contents

Overview

In this tutorial, we will look at some sample Windows Calculator Actors and User Stories. Actor is an entity who interacts with the system to perform tasks and achieve some goals.

To write test cases for an application think about the different actors of the system. The interactions between the Actor and System. These are called Use cases. How the user specifies these interactions or wishes are called user stories.

Sample Windows Calculator Actors

Human Actors

Sample Human Actors who interact with the System Under Test (SUT) . The SUT is the system on which the QA Testers test and execute testcases to find defects. Here in this example SUT is Windows Calculator application.

Some sample actors are:

Student
Accountant
Engineer

Note that : there can be other Actors as well. But, In this example we would limit to actor specified in the UML diagram.

Non-Human Actor Example

It’s a common misconception that Actors of a system are always Humans. Actors can also be other Software Programs, Applications, Middleware, APIs, Automation, Robots, etc.

Non-Human Actor Use Case

In this example, the Actor is an Antivirus software Program. For example, NortonLifeLock Antivirus( Symantec/ Norton /Norton 360) is a popular software application that scans the Calculator application for viruses and worms. This can be triggered by Human or Automated.