Struct snarkvm_wasm::algorithms::TestRng

source ·

pub struct TestRng(_);

Expand description

A fast RNG used solely for testing and benchmarking, not for any real world purposes.

Implementations

source

impl TestRng

source

pub fn fixed(seed: u64) -> TestRng

source

pub fn next_string(&mut self, max_bytes: u32, is_fixed_size: bool) -> String

Returns a randomly-sampled String, given the maximum size in bytes and an RNG.

Some of the snarkVM internal tests involve the random generation of strings, which are parsed and tested against the original ones. However, since the string parser rejects certain characters, if those characters are randomly generated, the tests fail.

To prevent these failures, as we randomly generate the characters, we ensure that they are not among the ones rejected by the parser; if they are, we adjust them to be allowed characters.

Note that the randomness of the characters is strictly for testing purposes; also note that the disallowed characters are a small fraction of the total set of characters, and thus the adjustments rarely occur.

Trait Implementations

source

impl Default for TestRng

source

fn default() -> TestRng

Returns the “default value” for a type. Read more

source

impl RngCore for TestRng

source

fn next_u32(&mut self) -> u32

Return the next random u32. Read more

source

fn next_u64(&mut self) -> u64

Return the next random u64. Read more

source

fn fill_bytes(&mut self, dest: &mut [u8])

Fill dest with random data. Read more

source

fn try_fill_bytes(&mut self, dest: &mut [u8]) -> Result<(), Error>

Fill dest entirely with random data. Read more

source

impl CryptoRng for TestRng

Auto Trait Implementations

impl RefUnwindSafe for TestRng

impl Send for TestRng

impl Sync for TestRng

impl Unpin for TestRng

impl UnwindSafe for TestRng

Blanket Implementations

source

impl<T> Any for Twhere
T: 'static + ?Sized,

source

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

source

impl<T> Borrow<T> for Twhere
T: ?Sized,

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

source

impl<T> BorrowMut<T> for Twhere
T: ?Sized,

const: unstable · source

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

source

impl<T> CryptoRngCore for Twhere
T: CryptoRng + RngCore,

source

fn as_rngcore(&mut self) -> &mut dyn RngCoreⓘNotable traits for dyn RngCore + 'static`impl Read for dyn RngCore + 'static`

Upcast to an RngCore trait object.

source

impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

source

impl<T> Instrument for T

source

fn instrument(self, span: Span) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>`impl<T> Future for Instrumented<T>where T: Future, type Output = <T as Future>::Output;`

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

source

fn in_current_span(self) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>`impl<T> Future for Instrumented<T>where T: Future, type Output = <T as Future>::Output;`

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

source

impl<T, U> Into for Twhere
U: From<T>,

const: unstable · source

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<T> Pointable for T

const ALIGN: usize = mem::align_of::<T>()

The alignment of pointer.

type Init = T

The type for initializers.

unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more

unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more

unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more

source

impl<R> Rng for Rwhere
R: RngCore + ?Sized,

source

fn gen<T>(&mut self) -> Twhere
Standard: Distribution<T>,

Return a random value supporting the Standard distribution. Read more

source

fn gen_range<T, R>(&mut self, range: R) -> Twhere
T: SampleUniform,
R: SampleRange<T>,

Generate a random value in the given range. Read more

source

fn sample<T, D>(&mut self, distr: D) -> Twhere
D: Distribution<T>,

Sample a new value, using the given distribution. Read more

source

fn sample_iter<T, D>(self, distr: D) -> DistIter<D, Self, T>ⓘNotable traits for DistIter<D, R, T>`impl<D, R, T> Iterator for DistIter<D, R, T>where D: Distribution<T>, R: Rng, type Item = T;`where
 D: Distribution<T>,
 Self: Sized,

Create an iterator that generates values using the given distribution. Read more

source

fn fill<T>(&mut self, dest: &mut T)where
T: Fill + ?Sized,

Fill any type implementing Fill with random data Read more

source

fn try_fill<T>(&mut self, dest: &mut T) -> Result<(), Error>where
T: Fill + ?Sized,

Fill any type implementing Fill with random data Read more

source

fn gen_bool(&mut self, p: f64) -> bool

Return a bool with a probability p of being true. Read more

source

fn gen_ratio(&mut self, numerator: u32, denominator: u32) -> bool

Return a bool with a probability of numerator/denominator of being true. I.e. gen_ratio(2, 3) has chance of 2 in 3, or about 67%, of returning true. If numerator == denominator, then the returned value is guaranteed to be true. If numerator == 0, then the returned value is guaranteed to be false. Read more

source

impl<T> Same<T> for T

type Output = T

Should always be Self

source

impl<T, U> TryFrom for Twhere
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

source

impl<T, U> TryInto for Twhere
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

impl<V, T> VZip<V> for Twhere
V: MultiLane<T>,

fn vzip(self) -> V

source

impl<T> WithSubscriber for T

source

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>ⓘNotable traits for WithDispatch<T>`impl<T> Future for WithDispatch<T>where T: Future, type Output = <T as Future>::Output;`where
S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more

source

fn with_current_subscriber(self) -> WithDispatch<Self>ⓘNotable traits for WithDispatch<T>`impl<T> Future for WithDispatch<T>where T: Future, type Output = <T as Future>::Output;`

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more

Struct snarkvm_wasm::algorithms::TestRng

Implementations

impl TestRng

pub fn fixed(seed: u64) -> TestRng

pub fn next_string(&mut self, max_bytes: u32, is_fixed_size: bool) -> String

Trait Implementations

impl Default for TestRng

fn default() -> TestRng

impl RngCore for TestRng

fn next_u32(&mut self) -> u32

fn next_u64(&mut self) -> u64

fn fill_bytes(&mut self, dest: &mut [u8])

fn try_fill_bytes(&mut self, dest: &mut [u8]) -> Result<(), Error>

impl CryptoRng for TestRng

Auto Trait Implementations

impl RefUnwindSafe for TestRng

impl Send for TestRng

impl Sync for TestRng

impl Unpin for TestRng

impl UnwindSafe for TestRng

Blanket Implementations

impl<T> Any for Twhere T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for Twhere T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for Twhere T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<T> CryptoRngCore for Twhere T: CryptoRng + RngCore,

fn as_rngcore(&mut self) -> &mut dyn RngCoreⓘNotable traits for dyn RngCore + 'staticimpl Read for dyn RngCore + 'static

impl<T> From<T> for T

fn from(t: T) -> T

impl<T> Instrument for T

fn instrument(self, span: Span) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>impl<T> Future for Instrumented<T>where T: Future, type Output = <T as Future>::Output;

fn in_current_span(self) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>impl<T> Future for Instrumented<T>where T: Future, type Output = <T as Future>::Output;

impl<T, U> Into<U> for Twhere U: From<T>,

fn into(self) -> U

impl<T> Pointable for T

const ALIGN: usize = mem::align_of::<T>()

type Init = T

unsafe fn init(init: <T as Pointable>::Init) -> usize

unsafe fn deref<'a>(ptr: usize) -> &'a T

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

unsafe fn drop(ptr: usize)

impl<R> Rng for Rwhere R: RngCore + ?Sized,

fn gen<T>(&mut self) -> Twhere Standard: Distribution<T>,

fn gen_range<T, R>(&mut self, range: R) -> Twhere T: SampleUniform, R: SampleRange<T>,

fn sample<T, D>(&mut self, distr: D) -> Twhere D: Distribution<T>,

fn sample_iter<T, D>(self, distr: D) -> DistIter<D, Self, T>ⓘNotable traits for DistIter<D, R, T>impl<D, R, T> Iterator for DistIter<D, R, T>where D: Distribution<T>, R: Rng, type Item = T;where D: Distribution<T>, Self: Sized,

fn fill<T>(&mut self, dest: &mut T)where T: Fill + ?Sized,

fn try_fill<T>(&mut self, dest: &mut T) -> Result<(), Error>where T: Fill + ?Sized,

fn gen_bool(&mut self, p: f64) -> bool

fn gen_ratio(&mut self, numerator: u32, denominator: u32) -> bool

impl<T> Same<T> for T

type Output = T

impl<T, U> TryFrom<U> for Twhere U: Into<T>,

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

impl<V, T> VZip<V> for Twhere V: MultiLane<T>,

fn vzip(self) -> V

impl<T> WithSubscriber for T

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>ⓘNotable traits for WithDispatch<T>impl<T> Future for WithDispatch<T>where T: Future, type Output = <T as Future>::Output;where S: Into<Dispatch>,

fn with_current_subscriber(self) -> WithDispatch<Self>ⓘNotable traits for WithDispatch<T>impl<T> Future for WithDispatch<T>where T: Future, type Output = <T as Future>::Output;

impl<T> Any for Twhere
T: 'static + ?Sized,

impl<T> Borrow<T> for Twhere
T: ?Sized,

impl<T> BorrowMut<T> for Twhere
T: ?Sized,

impl<T> CryptoRngCore for Twhere
T: CryptoRng + RngCore,

fn as_rngcore(&mut self) -> &mut dyn RngCoreⓘNotable traits for dyn RngCore + 'static`impl Read for dyn RngCore + 'static`

fn instrument(self, span: Span) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>`impl<T> Future for Instrumented<T>where T: Future, type Output = <T as Future>::Output;`

fn in_current_span(self) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>`impl<T> Future for Instrumented<T>where T: Future, type Output = <T as Future>::Output;`

impl<T, U> Into<U> for Twhere
U: From<T>,

impl<R> Rng for Rwhere
R: RngCore + ?Sized,

fn gen<T>(&mut self) -> Twhere
Standard: Distribution<T>,

fn gen_range<T, R>(&mut self, range: R) -> Twhere
T: SampleUniform,
R: SampleRange<T>,

fn sample<T, D>(&mut self, distr: D) -> Twhere
D: Distribution<T>,

fn sample_iter<T, D>(self, distr: D) -> DistIter<D, Self, T>ⓘNotable traits for DistIter<D, R, T>`impl<D, R, T> Iterator for DistIter<D, R, T>where D: Distribution<T>, R: Rng, type Item = T;`where
D: Distribution<T>,
Self: Sized,

fn fill<T>(&mut self, dest: &mut T)where
T: Fill + ?Sized,

fn try_fill<T>(&mut self, dest: &mut T) -> Result<(), Error>where
T: Fill + ?Sized,

impl<T, U> TryFrom<U> for Twhere
U: Into<T>,

impl<T, U> TryInto<U> for Twhere
U: TryFrom<T>,

impl<V, T> VZip<V> for Twhere
V: MultiLane<T>,

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>ⓘNotable traits for WithDispatch<T>`impl<T> Future for WithDispatch<T>where T: Future, type Output = <T as Future>::Output;`where
S: Into<Dispatch>,

fn with_current_subscriber(self) -> WithDispatch<Self>ⓘNotable traits for WithDispatch<T>`impl<T> Future for WithDispatch<T>where T: Future, type Output = <T as Future>::Output;`