Struct MemoryFileSystem 

pub struct MemoryFileSystem { /* private fields */ }

In-memory VFS shared between sync and async trait objects via Arc. Clone to hand the same state to multiple adapters.

Implementations

impl MemoryFileSystem

pub fn new() -> Self

Construct an empty in-memory filesystem.

pub fn inject_error(&self, path: impl Into<PathBuf>, op: FsOp, kind: ErrorKind)

Queue a scripted error. The next operation on path whose FsOp tag matches op returns io::Error::from(kind), and the injection is consumed. Multiple injections on the same (path, op) queue in FIFO order.

Trait Implementations

impl AsyncFileSystem for MemoryFileSystem

fn create_dir_all<'a>(&'a self, path: &'a Path) -> BoxFuture<'a, Result<()>>

Async variant of FileSystem::create_dir_all.

fn remove_dir_all<'a>(&'a self, path: &'a Path) -> BoxFuture<'a, Result<()>>

Async variant of FileSystem::remove_dir_all.

fn try_exists<'a>(&'a self, path: &'a Path) -> BoxFuture<'a, Result<bool>>

Async variant of FileSystem::try_exists.

fn open_read<'a>( &'a self, path: &'a Path, ) -> BoxFuture<'a, Result<Box<dyn AsyncFileRead>>>

Async variant of FileSystem::open_read.

fn open_write<'a>( &'a self, path: &'a Path, ) -> BoxFuture<'a, Result<Box<dyn AsyncFileWrite>>>

Async variant of FileSystem::open_write.

fn metadata<'a>(&'a self, path: &'a Path) -> BoxFuture<'a, Result<Metadata>>

Async variant of FileSystem::metadata.

fn rename<'a>( &'a self, from: &'a Path, to: &'a Path, ) -> BoxFuture<'a, Result<()>>

Async variant of FileSystem::rename.

impl Clone for MemoryFileSystem

fn clone(&self) -> MemoryFileSystem

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MemoryFileSystem

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

Formats the value using the given formatter.

impl Default for MemoryFileSystem

fn default() -> MemoryFileSystem

Returns the “default value” for a type.

impl FileSystem for MemoryFileSystem

fn create_dir_all(&self, path: &Path) -> Result<()>

Create a directory and all missing parents. Idempotent: succeeds if the directory already exists.

fn remove_dir_all(&self, path: &Path) -> Result<()>

Remove a directory and all of its contents recursively. ErrorKind::NotFound if the path does not exist.

fn try_exists(&self, path: &Path) -> Result<bool>

Returns Ok(true) if the path exists, Ok(false) if it does not, and a non-NotFound error for any other condition (for example permission denied).

fn open_read(&self, path: &Path) -> Result<Box<dyn FileRead>>

Open an existing file for reading. ErrorKind::NotFound if the file does not exist.

fn open_write(&self, path: &Path) -> Result<Box<dyn FileWrite>>

Open a file for writing, creating it if absent and truncating it if present. Missing parent directories produce ErrorKind::NotFound.

fn metadata(&self, path: &Path) -> Result<Metadata>

Return metadata for the path. ErrorKind::NotFound if the path does not exist.

fn rename(&self, from: &Path, to: &Path) -> Result<()>

Rename (move) a file or directory. ErrorKind::NotFound if the source does not exist.