Lab 2 : Unit testing

PhilippeCollet

Return of the Creature

Download creaturesLab2.zip and create a new project for this lab. It contains :

• a correction for the SmartCreature
• some small changes with some methods moved at appropriate places
• the code for a BouncingCreature :
  • it randomly changes direction (see the "noise" part)
  • it is supposed to bounce on the wall

But it is buggy... Run the launcher and see.

Exercise 1: first test on the random creature

• Think on how to organize tests (what is the surrounding setup, what are you going to test, how, which values, etc.)
• Create a first test (use the wizard and use help on fixing the project setup to include junit library)

Exercise 2: the 3 errors game

There are 3 errors in the BouncingCreature. Find them with the right tests and correct the code.

Exercise 3: mock objects

Set up:

1. Download mockito library mockito-all-1.9.5.jar
2. Create a new directory in your project called lib
3. Copy there the downloaded mockito jar file
4. Right click the jar file and select Build Path -> Add to build path

Change the previous tests so to mock the environment: think of the methods that are used by the creature...

Exercise 4: testing the smartness...

• Create a single test (with mock as well) to verify the basic algorithm of the SmartCreature.
• Add to this test some "verify" statement of mockito to check the interactions between the creature and its environment.

-- PhilippeCollet - 13 Oct 2013

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