extern crate txtpic;
use txtpic::calculate_string_brightness::calculate_string_brightness;

fn main() {
    println!("{}", calculate_string_brightness("@"));
    println!("{}", calculate_string_brightness("%"));
    println!("{}", calculate_string_brightness("#"));
    println!("{}", calculate_string_brightness("x"));
    println!("{}", calculate_string_brightness("+"));
    println!("{}", calculate_string_brightness("="));
    println!("{}", calculate_string_brightness(":"));
    println!("{}", calculate_string_brightness("-"));
    println!("{}", calculate_string_brightness("."));
    println!("{}", calculate_string_brightness(" "));
}

extern crate txtpic;
use txtpic::calculate_string_brightness::calculate_string_brightness;

fn main() {
    println!("{}", calculate_string_brightness('M'));
    println!("{}", calculate_string_brightness('@'));
    println!("{}", calculate_string_brightness('%'));
    println!("{}", calculate_string_brightness('#'));
    println!("{}", calculate_string_brightness('x'));
    println!("{}", calculate_string_brightness('+'));
    println!("{}", calculate_string_brightness('='));
    println!("{}", calculate_string_brightness(':'));
    println!("{}", calculate_string_brightness('-'));
    println!("{}", calculate_string_brightness('.'));
    println!("{}", calculate_string_brightness(' '));
}

Use new API in test code
Use new API in test code
