Muex.
View Source
Mutator that replaces a relational operator with its logical complement.
<->>=>-><=<=->>>=-><
This is PITest's "Negate Conditionals" semantics: each mutation flips the
truth value of the condition for every input. It deliberately leaves the
equality operators (==, !=, ===, !==) to Muex.Mutator.Comparison
and the directional/boundary shifts (e.g. < -> >) to that mutator too,
so the two mutators compose without producing duplicate mutants.