Software Engineering

I have an idea of how to create a simple Message class with the following features:

It should reside in the package message.

It should contain a private field that holds a message of type String

It should have a public constructor that takes a message of type String and assigns it to the message field

It should override the toString method to print the contents of the message field

However, I cannot remember how to create a JUnit Test case for my message class. I need to create a test case that requires the following:

It should reside in the package message.

It should test at least two different Message objects to see if their toString methods return the correct value.