Test Writing: At First

Imported By: Geoffrey Challen

/ Version: 2021.6.0

/ Adapted from CodingBat

Given a non-null String, return a String with length 2 made of its first 2 characters. If the string length is less than 2, use '@' for the missing characters.

Test Design Challenge

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

• Provide a 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 Java's assert method