Struct MemoryCache 

pub struct MemoryCache { /* private fields */ }

In-memory cache for testing and development

London School TDD Design:

• Implements Cache trait for collaboration contract
• Thread-safe with Arc<Mutex<>> for concurrent access
• No persistence - perfect for testing
• Fast operations without disk I/O

Example

use clnrm_core::cache::{MemoryCache, Cache};
use std::path::Path;

let cache = MemoryCache::new();
let file_path = Path::new("tests/api.clnrm.toml");
let content = "rendered content";

if cache.has_changed(file_path, content)? {
    // Run test
    cache.update(file_path, content)?;
}

Implementations

impl MemoryCache

pub fn new() -> Self

Create a new in-memory cache

pub fn len(&self) -> usize

Get the number of entries in cache (for testing)

Returns 0 if lock acquisition fails (defensive fallback for testing utility)

pub fn is_empty(&self) -> bool

Check if cache is empty (for testing)

Trait Implementations

impl Cache for MemoryCache

fn has_changed(&self, file_path: &Path, rendered_content: &str) -> Result<bool>

Check if a file has changed since last cache update

fn update(&self, file_path: &Path, rendered_content: &str) -> Result<()>

Update cache with new file hash

fn remove(&self, file_path: &Path) -> Result<()>

Remove a file from cache

fn save(&self) -> Result<()>

Save cache to persistent storage (if applicable)

fn stats(&self) -> Result<CacheStats>

Get cache statistics

fn clear(&self) -> Result<()>

Clear all cache entries

impl Clone for MemoryCache

fn clone(&self) -> MemoryCache

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MemoryCache

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

Formats the value using the given formatter.

impl Default for MemoryCache

fn default() -> Self

Returns the “default value” for a type.