Module fuzzcheck::mutators

Expand description

Types implementing the Mutator trait.

This module provides the following mutators:

mutators for basic types such as
- bool (here)
- char (here and here)
- integers (here and here)
- Vec (here and here)
- Option (here)
- Result (here)
- Box (here)
- tuples of up to 10 elements (here)
procedural macros to generate mutators for custom types:
- #[derive(DefaultMutator)] which works on most structs and enums
- make_mutator! { .. } which works like #[derive(DefaultMutator)] but is customisable
grammar-based string and syntax tree mutators (here) (supported on crate feature grammar_mutator only)

basic blocks to build more complex mutators: AlternationMutator<_, M> to use multiple different mutators acting on the same test case type Either<M1, M2> is the regular Either type, which also implements Mutator<T> if both M1 and M2 implement it too RecursiveMutator and RecurToMutator are wrappers allowing mutators to call themselves recursively, which is necessary to mutate recursive types. MapMutator<..> wraps a mutator and transforms the generated value using a user-provided function.