25.4. Anatomy of a Unit Test

Try these first

1. 1.

   What is the purpose of the setup component in a unit test?

   Hint

   Think about what you need to ensure everything is ready before the test.

2. 2.

   Name one assertion method you can use in JUnit.

   Hint

   Recall what methods we use to check for expected results.

3. 3.

   What phase follows setup in a unit test?

   • Teardown
   • Execution
   • Assertion

   Hint

   Think about the order of operations in a test.

4. 4.

   True or False: Teardown is mandatory in every unit test.

   • True
   • False

   Hint

   Consider if cleanup is needed for all tests.

5. 5.

   Design a unit test that measures the performance of a sorting function, including all phases: setup, execution, assertion, and teardown.

   Hint

   Consider how to verify that the array is sorted correctly post-execution.

6. 6.

   Create a scenario where tests may fail due to an improper setup phase. What could happen?

   Hint

   Think about how initial conditions impact the functionality being tested.