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//! # crates
//!
//! `crates` is a collection of utilities to make performing certain
//! calculations more convenient.
//!
//! ## Arts
//!
//! A library for modeling artistic concepts.

/// Adds one to number given.
///
/// # Examples
///
/// ```
/// let five = 5;
///
/// assert_eq!(6, crates::add_one(5));
/// ```
pub fn add_one(x: i32) -> i32 {
    x + 1
}

pub use kinds::PrimaryColor;
pub use kinds::SecondaryColor;
pub use utils::mix;

pub mod kinds {
    pub enum PrimaryColor {
        Red,
        Yellow,
        Blue,
    }

    pub enum SecondaryColor {
        Orange,
        Green,
        Purple,
    }
}

pub mod utils {
    use kinds::*;

    pub fn mix(c1: PrimaryColor, c2: PrimaryColor) -> SecondaryColor {
        SecondaryColor::Purple
    }
}


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