[][src]Trait proptest::test_runner::FailurePersistence

pub trait FailurePersistence: Send + Sync + Debug {
    fn box_clone(&self) -> Box<dyn FailurePersistence>;
fn eq(&self, other: &dyn FailurePersistence) -> bool;
fn as_any(&self) -> &dyn Any; fn load_persisted_failures2(
        &self,
        source_file: Option<&'static str>
    ) -> Vec<PersistedSeed> { ... }
fn load_persisted_failures(
        &self,
        source_file: Option<&'static str>
    ) -> Vec<[u8; 16]> { ... }
fn save_persisted_failure2(
        &mut self,
        source_file: Option<&'static str>,
        seed: PersistedSeed,
        shrunken_value: &dyn Debug
    ) { ... }
fn save_persisted_failure(
        &mut self,
        source_file: Option<&'static str>,
        seed: [u8; 16],
        shrunken_value: &dyn Debug
    ) { ... } }

Provides external persistence for historical test failures by storing seeds.

Note: Implementing load_persisted_failures and save_persisted_failures is deprecated and these methods will be removed in proptest 0.10.0. Instead, implement load_persisted_failures2 and save_persisted_failures2.

Required methods

Important traits for Box<R>
fn box_clone(&self) -> Box<dyn FailurePersistence>

Delegate method for producing a trait object usable with Clone

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

Equality testing delegate required due to constraints of trait objects.

fn as_any(&self) -> &dyn Any

Assistant method for trait object comparison.

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Provided methods

Important traits for Vec<u8>
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.

The default implementation is for backwards compatibility. It delegates to load_persisted_failures and converts the results into XorShift seeds.

Important traits for Vec<u8>
fn load_persisted_failures(
    &self,
    source_file: Option<&'static str>
) -> Vec<[u8; 16]>

Deprecated

Use load_persisted_failures2 instead.

This function inadvertently exposes the implementation of seeds prior to Proptest 0.9.1 and only works with XorShift seeds.

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.

The default implementation is for backwards compatibility. It delegates to save_persisted_failure if seed is a XorShift seed.

fn save_persisted_failure(
    &mut self,
    source_file: Option<&'static str>,
    seed: [u8; 16],
    shrunken_value: &dyn Debug
)

Deprecated

Use save_persisted_failures2 instead.

This function inadvertently exposes the implementation of seeds prior to Proptest 0.9.1 and only works with XorShift seeds.

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Trait Implementations

impl<'a, 'b> PartialEq<dyn FailurePersistence + 'b> for dyn FailurePersistence + 'a[src]

#[must_use]
fn ne(&self, other: &Rhs) -> bool
1.0.0[src]

This method tests for !=.

Implementors

impl FailurePersistence for FileFailurePersistence[src]

Important traits for Vec<u8>
fn load_persisted_failures(
    &self,
    source_file: Option<&'static str>
) -> Vec<[u8; 16]>
[src]

Deprecated

fn save_persisted_failure(
    &mut self,
    source_file: Option<&'static str>,
    seed: [u8; 16],
    shrunken_value: &dyn Debug
)
[src]

Deprecated

impl FailurePersistence for MapFailurePersistence[src]

Important traits for Vec<u8>
fn load_persisted_failures(
    &self,
    source_file: Option<&'static str>
) -> Vec<[u8; 16]>
[src]

Deprecated

fn save_persisted_failure(
    &mut self,
    source_file: Option<&'static str>,
    seed: [u8; 16],
    shrunken_value: &dyn Debug
)
[src]

Deprecated
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