use malachite_nz::natural::Natural;
use malachite_nz::test_util::generators::natural_pair_gen;
use malachite_q::test_util::generators::{
rational_natural_natural_triple_gen, rational_natural_pair_gen,
rational_rational_natural_triple_gen,
};
use malachite_q::Rational;
use std::cmp::Ordering;
use std::str::FromStr;
#[test]
fn test_partial_cmp_natural() {
let test = |s, t, out| {
let u = Rational::from_str(s).unwrap();
let v = Natural::from_str(t).unwrap();
assert_eq!(u.partial_cmp(&v), out);
assert_eq!(v.partial_cmp(&u).map(Ordering::reverse), out);
};
test("0", "0", Some(Ordering::Equal));
test("0", "5", Some(Ordering::Less));
test("123", "123", Some(Ordering::Equal));
test("123", "124", Some(Ordering::Less));
test("123", "122", Some(Ordering::Greater));
test("1000000000000", "123", Some(Ordering::Greater));
test("123", "1000000000000", Some(Ordering::Less));
test("1000000000000", "1000000000000", Some(Ordering::Equal));
test("-1000000000000", "1000000000000", Some(Ordering::Less));
test("-1000000000000", "0", Some(Ordering::Less));
test("99/100", "1", Some(Ordering::Less));
test("101/100", "1", Some(Ordering::Greater));
test("22/7", "3", Some(Ordering::Greater));
test("22/7", "4", Some(Ordering::Less));
test("-99/100", "1", Some(Ordering::Less));
test("-101/100", "1", Some(Ordering::Less));
test("-22/7", "3", Some(Ordering::Less));
test("-22/7", "4", Some(Ordering::Less));
}
#[test]
fn partial_cmp_natural_properties() {
rational_natural_pair_gen().test_properties(|(x, y)| {
let cmp = x.partial_cmp(&y);
assert_eq!(x.cmp(&Rational::from(&y)), cmp.unwrap());
assert_eq!(
rug::Rational::from(&x).partial_cmp(&rug::Integer::from(&y)),
cmp
);
assert_eq!(y.partial_cmp(&x), cmp.map(Ordering::reverse));
});
rational_rational_natural_triple_gen().test_properties(|(x, z, y)| {
if x < y && y < z {
assert!(x < z);
} else if x > y && y > z {
assert!(x > z);
}
});
rational_natural_natural_triple_gen().test_properties(|(y, x, z)| {
if x < y && y < z {
assert!(x < z);
} else if x > y && y > z {
assert!(x > z);
}
});
natural_pair_gen().test_properties(|(x, y)| {
assert_eq!(Rational::from(&x).partial_cmp(&y), Some(x.cmp(&y)));
assert_eq!(x.partial_cmp(&Rational::from(&y)), Some(x.cmp(&y)));
});
}