Struct proptest::test_runner::TestRng
source · pub struct TestRng { /* private fields */ }
Expand description
Proptest’s random number generator.
Currently, this is just a wrapper around XorShiftRng
.
Trait Implementations§
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<R> Rng for Rwhere
R: RngCore + ?Sized,
impl<R> Rng for Rwhere
R: RngCore + ?Sized,
source§fn gen<T>(&mut self) -> Twhere
Standard: Distribution<T>,
fn gen<T>(&mut self) -> Twhere
Standard: Distribution<T>,
source§fn gen_range<T>(&mut self, low: T, high: T) -> Twhere
T: PartialOrd<T> + SampleUniform,
fn gen_range<T>(&mut self, low: T, high: T) -> Twhere
T: PartialOrd<T> + SampleUniform,
Generate a random value in the range [
low
, high
), i.e. inclusive of
low
and exclusive of high
. Read moresource§fn sample<T, D>(&mut self, distr: D) -> Twhere
D: Distribution<T>,
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, 'a>(&'a mut self, distr: &'a D) -> DistIter<'a, D, Self, T>where
D: Distribution<T>,
Self: Sized,
fn sample_iter<T, D, 'a>(&'a mut self, distr: &'a D) -> DistIter<'a, D, Self, 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: AsByteSliceMut + ?Sized,
fn fill<T>(&mut self, dest: &mut T)where
T: AsByteSliceMut + ?Sized,
Fill
dest
entirely with random bytes (uniform value distribution),
where dest
is any type supporting AsByteSliceMut
, namely slices
and arrays over primitive integer types (i8
, i16
, u32
, etc.). Read moresource§fn try_fill<T>(&mut self, dest: &mut T) -> Result<(), Error>where
T: AsByteSliceMut + ?Sized,
fn try_fill<T>(&mut self, dest: &mut T) -> Result<(), Error>where
T: AsByteSliceMut + ?Sized,
Fill
dest
entirely with random bytes (uniform value distribution),
where dest
is any type supporting AsByteSliceMut
, namely slices
and arrays over primitive integer types (i8
, i16
, u32
, etc.). Read moresource§fn gen_bool(&mut self, p: f64) -> bool
fn gen_bool(&mut self, p: f64) -> bool
Return a bool with a probability
p
of being true. Read moresource§fn choose<T, 'a>(&mut self, values: &'a [T]) -> Option<&'a T>
fn choose<T, 'a>(&mut self, values: &'a [T]) -> Option<&'a T>
Return a random element from
values
. Read moresource§fn choose_mut<T, 'a>(&mut self, values: &'a mut [T]) -> Option<&'a mut T>
fn choose_mut<T, 'a>(&mut self, values: &'a mut [T]) -> Option<&'a mut T>
Return a mutable pointer to a random element from
values
. Read moresource§fn gen_iter<T>(&mut self) -> Generator<T, &mut Self>where
Standard: Distribution<T>,
fn gen_iter<T>(&mut self) -> Generator<T, &mut Self>where
Standard: Distribution<T>,
👎Deprecated since 0.5.0: use Rng::sample_iter(&Standard) instead
Return an iterator that will yield an infinite number of randomly
generated items. Read more
source§fn gen_weighted_bool(&mut self, n: u32) -> bool
fn gen_weighted_bool(&mut self, n: u32) -> bool
👎Deprecated since 0.5.0: use gen_bool instead
Return a bool with a 1 in n chance of true Read more
source§fn gen_ascii_chars(&mut self) -> AsciiGenerator<&mut Self>
fn gen_ascii_chars(&mut self) -> AsciiGenerator<&mut Self>
👎Deprecated since 0.5.0: use sample_iter(&Alphanumeric) instead
Return an iterator of random characters from the set A-Z,a-z,0-9. Read more