Why doesn't println! work in Rust unit tests?

Question

I\'ve implemented the following method and unit test:

use std::fs::File;
use std::path::Path;
use std::io::prelude::*;

fn read_file(path: &Path) {
    l         


        

Answer 1

To include print outs with println!() and keep colors for the test results, use the color and nocapture flags in cargo test.

$ cargo test -- --color always --nocapture

(cargo version: 0.13.0 nightly)