Struct io_test_util::ErrReader

pub struct ErrReader {
    pub kind: ErrorKind,
}

An implementation of std::io::Read that fails on the first call to read and throws an std::io::Error with the given ErrorKind.

Fields

kind: ErrorKind

The ErrorKind to put into the std::io::Error.

Methods

impl ErrReader

fn new(kind: ErrorKind) -> Self

Construct a new ErrReader.

Trait Implementations

impl Debug for ErrReader

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl PartialEq for ErrReader

fn eq(&self, __arg_0: &ErrReader) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, __arg_0: &ErrReader) -> bool

This method tests for !=.

impl Read for ErrReader

fn read(&mut self, _buf: &mut [u8]) -> Result<usize>

Pull some bytes from this source into the specified buffer, returning how many bytes were read.

unsafe fn initializer(&self) -> Initializer

🔬 This is a nightly-only experimental API. (read_initializer)

Determines if this Reader can work with buffers of uninitialized memory.

fn read_to_end(&mut self, buf: &mut Vec<u8>) -> Result<usize, Error>

Read all bytes until EOF in this source, placing them into buf.

fn read_to_string(&mut self, buf: &mut String) -> Result<usize, Error>

Read all bytes until EOF in this source, placing them into buf.

fn read_exact(&mut self, buf: &mut [u8]) -> Result<(), Error>

Read the exact number of bytes required to fill buf.

fn by_ref(&mut self) -> &mut Self

Creates a "by reference" adaptor for this instance of Read.

fn bytes(self) -> Bytes<Self>

Transforms this Read instance to an [Iterator] over its bytes.

fn chars(self) -> Chars<Self>

🔬 This is a nightly-only experimental API. (io)

the semantics of a partial read/write of where errors happen is currently unclear and may change

Transforms this Read instance to an [Iterator] over [char]s.

fn chain<R>(self, next: R) -> Chain<Self, R> where
    R: Read, 

Creates an adaptor which will chain this stream with another.

fn take(self, limit: u64) -> Take<Self>

Creates an adaptor which will read at most limit bytes from it.