Black-box testing

Imagine you have a box that you don't know what's inside. It's like a mystery box. This box has a secret way to interact with it like buttons or switches, but you don't understand how it works or what it's supposed to do.

Now, let's say you want to see if this box does what it's supposed to do or not, without knowing what's inside. You start pressing the buttons or flicking the switches and observe what happens. If the box does what it's supposed to do, congratulations! If not, you keep trying until you figure out what makes the box do what it's supposed to do.

This is similar to black-box testing. It's a way to test software or an application without understanding what's going on inside. Testers use this method by interacting with an application without having knowledge of its internal code. They focus on the input and output of the software and try to find out if the software behaves correctly or not.

In summary, black-box testing is like playing with a mystery box without understanding its contents. It's a way to test software by observing its inputs and outputs without knowing how it works internally.