Trait ResultCache 

pub trait ResultCache {
    // Required methods
    fn key(&self, key: &ResultCacheKey<'_>) -> u64;
    fn put(&mut self, key: u64, result: &Result<(), TestCaseError>);
    fn get(&self, key: u64) -> Option<&Result<(), TestCaseError>>;
}

An object which can cache the outcomes of tests.

Required Methods

fn key(&self, key: &ResultCacheKey<'_>) -> u64

Convert the given cache key into a u64 representing that value. The u64 is used as the key below.

This is a separate step so that ownership of the key value can be handed off to user code without needing to be able to clone it.

fn put(&mut self, key: u64, result: &Result<(), TestCaseError>)

Save result as the outcome associated with the test input in key.

result is passed as a reference so that the decision to clone depends on whether the cache actually plans on storing it.

fn get(&self, key: u64) -> Option<&Result<(), TestCaseError>>

If put() has been called with a semantically equivalent key, return the saved result. Otherwise, return None.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors