Macro read_assert

macro_rules! read_assert {
    ($resource:expr, $n:expr, $expected:expr) => { ... };
}

Convenience macro for reading and comparing a specific amount of bytes.

Reads a $n number of bytes from $resource and then compares that buffer with $expected. Panics if the buffers are not equal.

Example

use tcp_test::read_assert;
use std::io::{self, Read};

struct Placeholder;

impl Read for Placeholder {
    fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
        buf[0] = 1;
        buf[1] = 2;
        buf[2] = 3;

        Ok(3)
    }
}

read_assert!(Placeholder {}, 3, [1, 2, 3]);