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Before we Learn What Use Case Testing is, let’s understand

What is a Use Case?

A use case is a description of a particular use of the system by an actor or user. It is used widely in developing tests at system or acceptance level.

What is Use Case Testing?

Use Case Testing, is a technique that helps identify test cases that cover the entire system, on a transaction by transaction basis from start to the finishing point.

In a use-case, an actor is represented by "A" and system by "S". First, we list the Main Success Scenario.

Main Success Scenario Step Description
1 A: Enter Agent Name & Password
2 S: Validate Password
3 S: Allow Account Access
Extensions 2a Password not valid
S :Display Message and ask for re-try 4 times
2b Password not valid 4 times
S :Close Application

  • Consider the first step of an end to end scenario for a login functionality for our Flight Reservation application where the Actor enters Agent Name and password to login into the Flight Reservation application.
  • In the next step, the system will validate the password
  • Next, if the password is correct, the access will be granted
  • There can be an extension of this use case. In case password is not valid system will display a message and ask for re-try four times
  • Or if Password, not valid four times system will close the application

Here we will test the success scenario and one case of each extension.

This is USE-Case testing

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