Test Writing: Subtracter Single Method

Created By: Geoffrey Challen

/ Version: 2021.2.0

Create a class called Subtracter. Subtracter should store a single Int value which you can initialize to 0. It should also provide a public method called subtract. subtract should accept an Int parameter, subtract it from the stored value, and return the updated value.

Test Design Challenge

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

• Provide a public class named TestSubtracter 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