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#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn it_works() {
        assert_eq!(2 + 2, 4);
    }

    #[test]
    fn print_outs() {
        private_function();
        public_function();
        indirect_access();
    }
}

pub fn public_function() {
    println!("called boilerup's `public_function()`");
}

fn private_function() {
    println!("called boilerup's `private_function()`");
}

pub fn indirect_access() {
    print!("called boilerup's `indirect_access()`, that\n> ");

    private_function();
}