sqt/SQ-2023-H6/answer.md

title	author	geometry
Software Quality & Testing -- Graded Assignment 6	Claudio Maggioni	margin=2.5cm,bottom=3cm

Are there mutants that you cannot kill?

Yes.

If yes, why and which are mutants that you cannot kill?

The mutants I cannot kill are:

replaced boolean return with true for org/usi/sq/util/CircularFifoQueue::offer → SURVIVED

at line 135 (which is impossible to kill since the parent method always returns true, thus the mutant is semantically equivalent to the implementation), and:

changed conditional boundary → SURVIVED
changed conditional boundary → SURVIVED
negated conditional → SURVIVED

for if (start < lastReturnedIndex && pos < end) at line 251.