Struct MockFs 

pub struct MockFs { /* private fields */ }

A simple in-memory key-value store that simulates persistent IO.

This can be used in tests or elaboration to mock file system operations.

Implementations

impl MockFs

pub fn new() -> Self

Create an empty mock file system.

pub fn write(&mut self, path: &str, data: Vec<u8>)

Write bytes to a file.

pub fn write_str(&mut self, path: &str, content: &str)

Write a string to a file.

pub fn read(&self, path: &str) -> Result<Vec<u8>, IoError>

Read the contents of a file.

pub fn read_str(&self, path: &str) -> Result<String, IoError>

Read the contents of a file as a string.

pub fn exists(&self, path: &str) -> bool

Check if a file exists.

pub fn remove(&mut self, path: &str) -> bool

Delete a file. Returns true if it existed.

pub fn list_paths(&self) -> Vec<&str>

List all file paths in the mock file system.

pub fn file_size(&self, path: &str) -> Result<u64, IoError>

File size in bytes, or an error if not found.

Trait Implementations

impl Clone for MockFs

fn clone(&self) -> MockFs

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MockFs

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

Formats the value using the given formatter.

impl Default for MockFs

fn default() -> MockFs

Returns the “default value” for a type.