pieTest - Mutation Test failure

Question

All, There is an issue while running mutation test cases.

Getting the mutation test case failures as follows:

removed call to java/util/List::sort → SURVIVED
removed call to java/util/List::forEach → SURVIVED

The code:

List<CustomClass> data;//address is the field in the CustomClass
UseCase useCase; //setEventBus is the method
   data.sort(Comparator.comparingInt(CustomClass::getAddress));
     
   data.forEach(frame -> useCase.setEventBus(frameList, data.getAddress()));

I have written couple of unit test cases but mutants survived. Can anyone help here for this problem?

I also do my first steps with mutation testing, so it's just a guess: Your test is still green, even when the `sort` and `forEach` is removed from code. Write a test, that fails when you remove one of these calls. — Timo, Jul 25 '22 at 16:24

score 0 · Accepted Answer · answered Jul 27 '22 at 14:59

The failed mutation cases are solved.

removed call to java/util/List::sort → SURVIVED:

Added the test case for the below line data.sort(Comparator.comparingInt(CustomClass::getAddress)); The test case is added to store the unsorted data in 'data' object.

pieTest - Mutation Test failure

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