any_of 2.1.0

A general optional sum of product type which can be Neither, Left, Right or Both.
Documentation 
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use crate::*;

#[test]
fn test_both_new() {
    let both = BothOf::new(10, "right");
    assert_eq!(both.left, 10);
    assert_eq!(both.right, "right");
}

#[test]
fn test_both_from_couple() {
    let tuple = (42, "hello");
    let both = BothOf::from_couple(tuple);
    assert_eq!(both.left, 42);
    assert_eq!(both.right, "hello");
}

#[test]
fn test_into_couple() {
    let both = BothOf::new(100, "goodbye");
    let couple = both.into_couple();
    assert_eq!(couple, (100, "goodbye"));
}

#[test]
fn test_into_left() {
    let both = BothOf::new(1, "left");
    let left = both.into_left();
    assert!(matches!(left, Left(1)));
}

#[test]
fn test_into_right() {
    let both = BothOf::new("right", 2023);
    let right = both.into_right();
    assert!(matches!(right, Right(2023)));
}

#[test]
fn test_both_swap() {
    let both = BothOf::new("first", 5);
    let swapped = both.swap();
    assert_eq!(swapped.left, 5);
    assert_eq!(swapped.right, "first");
}

#[test]
fn test_both_map() {
    let both = BothOf::new(10, core::f64::consts::PI);
    let mapped = both.map(|l| l * 2, |r| r / 2.0);
    assert_eq!(mapped.left, 20);
    assert!(mapped.right < 1.6);
}