#![cfg_attr(not(feature = "use_std"), no_std)]
mod fst;
mod ops;
mod snd;
mod trd;
pub use fst::Fst;
pub use ops::add::Addition;
pub use ops::div::Division;
pub use ops::mul::Multiply;
pub use ops::sub::Subtraction;
pub use snd::Snd;
pub use trd::Trd;
#[cfg(feature = "use_std")]
#[cfg(test)]
mod tests {
use crate::{Addition, Division, Fst, Multiply, Snd, Subtraction};
#[test]
fn fst() {
let x = vec![(2, 3), (3, 4), (4, 5), (5, 6)];
let expected = vec![2, 3, 4, 5];
assert_eq!(
x.iter().map(Fst::fst).cloned().collect::<Vec<_>>(),
expected
);
assert_eq!(
x.into_iter().map(Fst::into_fst).collect::<Vec<_>>(),
expected
);
}
#[test]
fn snd() {
let x = vec![(2, 3), (3, 4), (4, 5), (5, 6)];
let expected = vec![3, 4, 5, 6];
assert_eq!(
x.iter().map(Snd::snd).cloned().collect::<Vec<_>>(),
expected
);
assert_eq!(
x.into_iter().map(Snd::into_snd).collect::<Vec<_>>(),
expected
);
}
#[test]
fn add() {
let x = vec![(1, 2, 1), (1, 1, 1)];
let y = (1, 1, 1);
let z = (1, 1, 1);
assert_eq!(y.add(z), (2, 2, 2));
assert_eq!(x.into_iter().fold((0, 0, 0), |a, b| a.add(b)), (2, 3, 2));
}
#[test]
fn mul() {
let x = vec![(1, 2, 1), (1, 1, 1)];
let y = (1, 1, 1);
let z = (1, 1, 1);
assert_eq!(y.mul(z), (1, 1, 1));
assert_eq!(x.into_iter().fold((0, 0, 0), |a, b| a.mul(b)), (0, 0, 0));
}
#[test]
fn sub() {
let x = vec![(1, 2, 1), (1, 1, 1)];
let y = (1, 1, 1);
let z = (1, 1, 1);
assert_eq!(y.sub(z), (0, 0, 0));
assert_eq!(x.into_iter().fold((0, 0, 0), |a, b| a.sub(b)), (-2, -3, -2));
}
#[test]
fn div() {
let x = vec![(1, 2, 1), (1, 1, 1)];
let y = (1, 1, 1);
let z = (1, 1, 1);
assert_eq!(y.div(z), (1, 1, 1));
assert_eq!(
x.into_iter().fold((1, 1, 1), |a, b| a.div(b)),
(1, 1 / 2, 1)
);
}
}