Struct proptest::test_runner::MapFailurePersistence

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pub struct MapFailurePersistence {
    pub map: BTreeMap<&'static str, BTreeSet<PersistedSeed>>,
}
Expand description

Failure persistence option that loads and saves seeds in memory on the heap. This may be useful when accumulating test failures across multiple TestRunner instances for external reporting or batched persistence.

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§map: BTreeMap<&'static str, BTreeSet<PersistedSeed>>

Backing map, keyed by source_file.

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impl Clone for MapFailurePersistence

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fn clone(&self) -> MapFailurePersistence

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for MapFailurePersistence

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

Formats the value using the given formatter. Read more
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impl Default for MapFailurePersistence

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fn default() -> MapFailurePersistence

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

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fn load_persisted_failures2( &self, source_file: Option<&'static str>, ) -> Vec<PersistedSeed>

Supply seeds associated with the given source_file that may be used by a TestRunner’s random number generator in order to consistently recreate a previously-failing Strategy-provided value. Read more
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fn save_persisted_failure2( &mut self, source_file: Option<&'static str>, seed: PersistedSeed, _shrunken_value: &dyn Debug, )

Store a new failure-generating seed associated with the given source_file. Read more
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fn box_clone(&self) -> Box<dyn FailurePersistence>

Delegate method for producing a trait object usable with Clone
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fn eq(&self, other: &dyn FailurePersistence) -> bool

Equality testing delegate required due to constraints of trait objects.
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fn as_any(&self) -> &dyn Any

Assistant method for trait object comparison.
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fn load_persisted_failures( &self, source_file: Option<&'static str>, ) -> Vec<[u8; 16]>

👎Deprecated
Use load_persisted_failures2 instead. Read more
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fn save_persisted_failure( &mut self, source_file: Option<&'static str>, seed: [u8; 16], shrunken_value: &dyn Debug, )

👎Deprecated
Use save_persisted_failures2 instead. Read more
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impl PartialEq for MapFailurePersistence

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fn eq(&self, other: &MapFailurePersistence) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl StructuralPartialEq for MapFailurePersistence

Auto Trait Implementations§

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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default unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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

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fn into(self) -> U

Calls U::from(self).

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

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V