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use std::io::{self, ErrorKind};
#[derive(Debug, PartialEq)]
pub struct ErrReader {
pub kind: ErrorKind,
}
impl ErrReader {
pub fn new(kind: ErrorKind) -> Self {
Self {
kind,
}
}
}
impl io::Read for ErrReader {
fn read(&mut self, _buf: &mut [u8]) -> io::Result<usize> {
Err(io::Error::new(self.kind, ""))
}
}
#[cfg(test)]
mod test {
use super::*;
use std::io::Read;
#[test]
fn should_throw_correct_error() {
let mut reader = ErrReader::new(ErrorKind::BrokenPipe);
let res = reader.read(&mut [0; 3]);
assert!(res.is_err());
if let Err(err) = res {
assert_eq!(io::ErrorKind::BrokenPipe, err.kind());
}
}
}