Basic Project for the Mutation Testing Community Micro - Workshop ;-)
Clone the directory to your harddrive. Open the maven project (mutationtesting/pom.xml) with your prefered IDE. Start with the maven targets clean and install ( mvn clean install )
After a few seconds or minutes you will have all dependencies locally.
This project is using Java8.
Go to the src folder. Here you will find packages org.rapidpm.event.mutationtesting.m01 , m02, ... In every package you will find a class called MXX. (XX is a number, beginning from 01)
For every class you will find a test class in the corresponding test/java/junit/.. folder.
Start writing tests for the class and reach 100% Line Coverage. To check this you have to run the maven targets clean and install. After the "Build Success" message you will find under target/site/jacoco the actual Line Coverage report.
After you reached your LineCoverage target, create the mutation testing report.
mvn clean install pitest:mutationCoverage
This will create an html report inside the folder target/pit-reports/YYYYMMDDHHMI.
Write for every method from the production classes junit tests until
- test coverage is 100%
- mutation test coverage is as good as possible
Write first the junit tests based on linecoverage and your
estimation/ experience until you are sure that your result is "perfect" ;-)
After this generate the mutation test coverage report with the maven plugin pitest.
The master brach is your working branch. If you want to compare the results commit your code and switch to the solution branch.
The task M03 is a little bit different. Start writing jUnit tests as best as you can. ( based on the mutation test coverage report)
If you are done, create a second class M03_Refactored to write a new version
of the method discardCommonPrefix.
Check the method create() in the Test-Class to see how to switch implementations for this example.