Struct MockCache 

pub struct MockCache { /* private fields */ }

Mock cache implementation for testing purposes.

Provides an in-memory cache that mimics Redis behavior including:

• TTL expiration
• NX (not exists) semantics
• Error injection for testing error handling

Example

use mx_cache::mock::MockCache;
use mx_cache::Cache;
use std::time::Duration;

let cache = MockCache::new();

cache.set(b"key", b"value", Duration::from_secs(60)).await.unwrap();
let result = cache.get(b"key").await.unwrap();
assert_eq!(result, Some(b"value".to_vec()));

Implementations

impl MockCache

pub fn new() -> Self

Creates a new empty mock cache.

pub fn with_data<I, K, V>(entries: I) -> Self

where I: IntoIterator<Item = (K, V)>, K: AsRef<[u8]>, V: AsRef<[u8]>,

Creates a mock cache with pre-populated data.

Arguments

• entries - Iterator of (key, value) pairs to pre-populate

pub fn enable_error_mode(&self, message: &str)

Enables error mode - all subsequent operations will fail with the given message.

This is useful for testing error handling paths.

pub fn disable_error_mode(&self)

Disables error mode - operations will proceed normally.

pub fn operation_counts(&self) -> OperationCounts

Returns the current operation counts.

pub fn reset_counts(&self)

Resets operation counts to zero.

pub fn len(&self) -> usize

Returns the number of non-expired entries in the cache.

pub fn is_empty(&self) -> bool

Returns true if the cache has no non-expired entries.

pub fn clear(&self)

Clears all entries from the cache.

pub fn force_expire(&self, key: &[u8])

Manually expires an entry (for testing TTL behavior).

Trait Implementations

impl Cache for MockCache

fn set_nx_px( &self, key: &[u8], value: &[u8], ttl: Duration, ) -> impl Future<Output = Result<bool>> + Send

fn set( &self, key: &[u8], value: &[u8], ttl: Duration, ) -> impl Future<Output = Result<()>> + Send

fn get( &self, key: &[u8], ) -> impl Future<Output = Result<Option<Vec<u8>>>> + Send

fn del(&self, key: &[u8]) -> impl Future<Output = Result<()>> + Send

impl Clone for MockCache

fn clone(&self) -> MockCache

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for MockCache

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

Formats the value using the given formatter.

impl Default for MockCache

fn default() -> Self

Returns the “default value” for a type.