25. Unit Testing and Debugging (e.g., JUnit)

Try these first

1. 1.

   What is unit testing?

   Hint

   Think about the smallest parts of software.

2. 2.

   What does JUnit help with?

   Hint

   It is a framework specifically designed for Java.

3. 3.

   What is the main purpose of unit testing?

   • To check individual components
   • To validate the entire application
   • To perform user acceptance testing

   Hint

   Think of the smallest parts that are tested.

4. 4.

   True or False: JUnit is a widely accepted framework for testing in Java.

   • True
   • False

   Hint

   Consider its popularity and usage in many projects.

5. 5.

   Create a unit test for a method that checks if a number is even. Discuss how you would use mocking if the method checks against a database for valid numbers.

   Hint

   How can you isolate the method in your testing?

6. 6.

   Consider a debugging scenario where an application crashes without an error message. What steps would you take to troubleshoot?

   Hint

   Think about systematic methods to identify where the problem lies.