Struct GcOpsMutator 

pub struct GcOpsMutator { /* private fields */ }

Mutator for GcOps.

Trait Implementations

impl Debug for GcOpsMutator

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for GcOpsMutator

fn default() -> Self

Returns the “default value” for a type.

impl Generate<GcOp> for GcOpsMutator

fn generate(&mut self, ctx: &mut Context) -> MutResult<GcOp>

Generate a random T value from scratch.

impl Generate<GcOps> for GcOpsMutator

fn generate(&mut self, ctx: &mut Context) -> MutResult<GcOps>

Generate a random T value from scratch.

impl Mutate<GcOp> for GcOpsMutator

fn mutate(&mut self, c: &mut Candidates<'_>, value: &mut GcOp) -> MutResult<()>

Pseudo-randomly mutate the given value.

fn mutation_count(&self, value: &T, shrink: bool) -> Option<u32>

Return the number of mutations that [mutate][Mutate::mutate] would register for the given value.

fn or<M>(self, other: M) -> Or<Self, M>

where Self: Sized,

Create a new mutator that performs either this mutation or the other mutation.

fn map<F>(self, f: F) -> Map<Self, F>

where Self: Sized, F: FnMut(&mut Context, &mut T) -> Result<(), Error>,

Map a function over the mutations produced by this mutator.

fn proj<F, U>(self, f: F) -> Proj<Self, F>

where Self: Sized, F: FnMut(&mut U) -> &mut T,

Given a projection function F: FnMut(&mut U) -> &mut T, turn this Mutate<T> into a Mutate<U>.

fn by_ref(&mut self) -> &mut Self

where Self: Sized,

Borrows a mutator, rather than consuming it.

impl Mutate<GcOps> for GcOpsMutator

fn mutate(&mut self, c: &mut Candidates<'_>, ops: &mut GcOps) -> MutResult<()>

Pseudo-randomly mutate the given value.

fn mutation_count(&self, value: &T, shrink: bool) -> Option<u32>

Return the number of mutations that [mutate][Mutate::mutate] would register for the given value.

fn generate_via_mutate( &mut self, context: &mut Context, iters: usize, ) -> Result<T, Error>

where T: Sized + Default,

Generate a new value by mutating its default value iters times.

fn or<M>(self, other: M) -> Or<Self, M>

where Self: Sized,

Create a new mutator that performs either this mutation or the other mutation.

fn map<F>(self, f: F) -> Map<Self, F>

where Self: Sized, F: FnMut(&mut Context, &mut T) -> Result<(), Error>,

Map a function over the mutations produced by this mutator.

fn proj<F, U>(self, f: F) -> Proj<Self, F>

where Self: Sized, F: FnMut(&mut U) -> &mut T,

Given a projection function F: FnMut(&mut U) -> &mut T, turn this Mutate<T> into a Mutate<U>.

fn by_ref(&mut self) -> &mut Self

where Self: Sized,

Borrows a mutator, rather than consuming it.