log4rs_test_utils 0.2.3

Utilities for testing log4rs-based logging, whether you want to log your tests or test your logs.
Documentation 
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use log4rs::encode;
use std::io;

/// A simple string buffer that can be written to by an encoder.
/// We assume UTF-8 encoding.
#[derive(Debug)]
pub struct StringBuffer(pub String);

impl StringBuffer {
    pub fn new() -> Self {
        Self(String::new())
    }
}

impl io::Write for StringBuffer {
    fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
        let buf_encoded = String::from_utf8(buf.to_vec())
            .map_err(|_| io::Error::new(io::ErrorKind::InvalidData, "invalid UTF-8"))?;
        self.0.push_str(&buf_encoded);
        Ok(buf.len())
    }

    fn flush(&mut self) -> io::Result<()> {
        Ok(())
    }
}

impl encode::Write for StringBuffer {}