Test Writing: Flip Flop Object

Created By: Geoffrey Challen

/ Version: 2020.9.0

Define a public class named Flip with a single public instance method named flop that takes no parameters and returns a Boolean. Flip should also provide a single public constructor that accepts a Boolean argument and sets the initial state of the Flip instance.

Flip maintains one piece of private state: the boolean. Calling flop changes the boolean from true to false or false to true and returns the new (not the old) state of the boolean. So, for example:

Note that the internal state should be private.

Test Design Challenge

You're challenge is to write tests for this problem described above.

• Provide a public class named TestFlip with a single non-private class method named test that accepts no arguments and does not return a value.
• If the implementation of the class described above is incorrect, your test method should throw an exception.
• If it is correct, do not throw an exception.
• You may want to use Kotlin's assert or check methods