Struct proptest::strategy::NoShrink
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pub struct NoShrink<T>(_);
Wraps a Strategy
or ValueTree
to suppress shrinking of generated
values.
See Strategy::no_shrink()
for more details.
Trait Implementations
impl<T: Clone> Clone for NoShrink<T>
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fn clone(&self) -> NoShrink<T>
Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
1.0.0
Performs copy-assignment from source
. Read more
impl<T: Copy> Copy for NoShrink<T>
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impl<T: Debug> Debug for NoShrink<T>
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impl<T: Strategy> Strategy for NoShrink<T>
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type Value = NoShrink<T::Value>
The value tree generated by this Strategy
. Read more
fn new_value(&self, runner: &mut TestRunner) -> Result<Self::Value, String>
Generate a new value tree from the given runner. Read more
fn prop_map<O: Debug, F: Fn(<Self::Value as ValueTree>::Value) -> O>(
self,
fun: F
) -> Map<Self, F> where
Self: Sized,
self,
fun: F
) -> Map<Self, F> where
Self: Sized,
Returns a strategy which produces values transformed by the function fun
. Read more
fn prop_flat_map<S: Strategy, F: Fn(<Self::Value as ValueTree>::Value) -> S>(
self,
fun: F
) -> Flatten<Map<Self, F>> where
Self: Sized,
self,
fun: F
) -> Flatten<Map<Self, F>> where
Self: Sized,
Maps values produced by this strategy into new strategies and picks values from those strategies. Read more
fn prop_ind_flat_map<S: Strategy, F: Fn(<Self::Value as ValueTree>::Value) -> S>(
self,
fun: F
) -> IndFlatten<Map<Self, F>> where
Self: Sized,
self,
fun: F
) -> IndFlatten<Map<Self, F>> where
Self: Sized,
Maps values produced by this strategy into new strategies and picks values from those strategies while considering the new strategies to be independent. Read more
fn prop_ind_flat_map2<S: Strategy, F: Fn(<Self::Value as ValueTree>::Value) -> S>(
self,
fun: F
) -> IndFlattenMap<Self, F> where
Self: Sized,
self,
fun: F
) -> IndFlattenMap<Self, F> where
Self: Sized,
Similar to prop_ind_flat_map()
, but produces 2-tuples with the input generated from self
in slot 0 and the derived strategy in slot 1. Read more
fn prop_filter<F: Fn(&<Self::Value as ValueTree>::Value) -> bool>(
self,
whence: String,
fun: F
) -> Filter<Self, F> where
Self: Sized,
self,
whence: String,
fun: F
) -> Filter<Self, F> where
Self: Sized,
Returns a strategy which only produces values accepted by fun
. Read more
fn prop_union(self, other: Self) -> Union<Self> where
Self: Sized,
Self: Sized,
Returns a strategy which picks uniformly from self
and other
. Read more
fn prop_recursive<F: Fn(Arc<BoxedStrategy<<Self::Value as ValueTree>::Value>>) -> BoxedStrategy<<Self::Value as ValueTree>::Value>>(
self,
depth: u32,
desired_size: u32,
expected_branch_size: u32,
recurse: F
) -> Recursive<BoxedStrategy<<Self::Value as ValueTree>::Value>, F> where
Self: Sized + 'static,
self,
depth: u32,
desired_size: u32,
expected_branch_size: u32,
recurse: F
) -> Recursive<BoxedStrategy<<Self::Value as ValueTree>::Value>, F> where
Self: Sized + 'static,
Generate a recursive structure with self
items as leaves. Read more
fn boxed(self) -> BoxedStrategy<<Self::Value as ValueTree>::Value> where
Self: Sized + 'static,
Self: Sized + 'static,
Erases the type of this Strategy
so it can be passed around as a simple trait object. Read more
fn no_shrink(self) -> NoShrink<Self> where
Self: Sized,
Self: Sized,
Wraps this strategy to prevent values from being subject to shrinking. Read more
impl<T: ValueTree> ValueTree for NoShrink<T>
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type Value = T::Value
The type of the value produced by this ValueTree
.
fn current(&self) -> T::Value
Returns the current value.
fn simplify(&mut self) -> bool
Attempts to simplify the current value. Notionally, this sets the "high" value to the current value, and the current value to a "halfway point" between high and low, rounding towards low. Read more
fn complicate(&mut self) -> bool
Attempts to partially undo the last simplification. Notionally, this sets the "low" value to one plus the current value, and the current value to a "halfway point" between high and the new low, rounding towards low. Read more