use crate::extra_variadic::{lex_triples_from_single, lex_triples_xxy, lex_triples_xyx};
use itertools::Itertools;
use malachite_base::bools::exhaustive::exhaustive_bools;
use malachite_base::nevers::nevers;
use malachite_base::num::exhaustive::exhaustive_unsigneds;
use malachite_base::orderings::exhaustive::exhaustive_orderings;
use malachite_base::tuples::exhaustive::lex_pairs;
use std::cmp::Ordering;
use std::fmt::Debug;
use std::iter::once;
fn lex_triples_xxy_helper<
X: Clone + Debug + Eq,
I: Clone + Iterator<Item = X>,
Y: Clone + Debug + Eq,
J: Clone + Iterator<Item = Y>,
>(
xs: I,
ys: J,
out_len: usize,
out: &[(X, X, Y)],
) {
let ts = lex_triples_xxy(xs, ys);
let ts_prefix = ts.clone().take(20).collect_vec();
assert_eq!(ts_prefix.as_slice(), out);
assert_eq!(ts.count(), out_len);
}
#[test]
fn test_lex_triples_xxy() {
lex_triples_xxy_helper(nevers(), nevers(), 0, &[]);
lex_triples_xxy_helper(nevers(), 0..4, 0, &[]);
lex_triples_xxy_helper(once('a'), once(1), 1, &[('a', 'a', 1)]);
lex_triples_xxy_helper(
once('a'),
0..4,
4,
&[('a', 'a', 0), ('a', 'a', 1), ('a', 'a', 2), ('a', 'a', 3)],
);
lex_triples_xxy_helper(
exhaustive_unsigneds::<u8>(),
'a'..'e',
1 << 18,
&[
(0, 0, 'a'),
(0, 0, 'b'),
(0, 0, 'c'),
(0, 0, 'd'),
(0, 1, 'a'),
(0, 1, 'b'),
(0, 1, 'c'),
(0, 1, 'd'),
(0, 2, 'a'),
(0, 2, 'b'),
(0, 2, 'c'),
(0, 2, 'd'),
(0, 3, 'a'),
(0, 3, 'b'),
(0, 3, 'c'),
(0, 3, 'd'),
(0, 4, 'a'),
(0, 4, 'b'),
(0, 4, 'c'),
(0, 4, 'd'),
],
);
lex_triples_xxy_helper(
exhaustive_bools(),
0..4,
16,
&[
(false, false, 0),
(false, false, 1),
(false, false, 2),
(false, false, 3),
(false, true, 0),
(false, true, 1),
(false, true, 2),
(false, true, 3),
(true, false, 0),
(true, false, 1),
(true, false, 2),
(true, false, 3),
(true, true, 0),
(true, true, 1),
(true, true, 2),
(true, true, 3),
],
);
lex_triples_xxy_helper(
'a'..'f',
0..3,
75,
&[
('a', 'a', 0),
('a', 'a', 1),
('a', 'a', 2),
('a', 'b', 0),
('a', 'b', 1),
('a', 'b', 2),
('a', 'c', 0),
('a', 'c', 1),
('a', 'c', 2),
('a', 'd', 0),
('a', 'd', 1),
('a', 'd', 2),
('a', 'e', 0),
('a', 'e', 1),
('a', 'e', 2),
('b', 'a', 0),
('b', 'a', 1),
('b', 'a', 2),
('b', 'b', 0),
('b', 'b', 1),
],
);
lex_triples_xxy_helper(
['a', 'b', 'c'].iter().cloned(),
exhaustive_orderings(),
27,
&[
('a', 'a', Ordering::Equal),
('a', 'a', Ordering::Less),
('a', 'a', Ordering::Greater),
('a', 'b', Ordering::Equal),
('a', 'b', Ordering::Less),
('a', 'b', Ordering::Greater),
('a', 'c', Ordering::Equal),
('a', 'c', Ordering::Less),
('a', 'c', Ordering::Greater),
('b', 'a', Ordering::Equal),
('b', 'a', Ordering::Less),
('b', 'a', Ordering::Greater),
('b', 'b', Ordering::Equal),
('b', 'b', Ordering::Less),
('b', 'b', Ordering::Greater),
('b', 'c', Ordering::Equal),
('b', 'c', Ordering::Less),
('b', 'c', Ordering::Greater),
('c', 'a', Ordering::Equal),
('c', 'a', Ordering::Less),
],
);
lex_triples_xxy_helper(
lex_pairs(exhaustive_orderings(), exhaustive_bools()),
lex_triples_from_single([Ordering::Less, Ordering::Greater].iter().cloned()),
288,
&[
(
(Ordering::Equal, false),
(Ordering::Equal, false),
(Ordering::Less, Ordering::Less, Ordering::Less),
),
(
(Ordering::Equal, false),
(Ordering::Equal, false),
(Ordering::Less, Ordering::Less, Ordering::Greater),
),
(
(Ordering::Equal, false),
(Ordering::Equal, false),
(Ordering::Less, Ordering::Greater, Ordering::Less),
),
(
(Ordering::Equal, false),
(Ordering::Equal, false),
(Ordering::Less, Ordering::Greater, Ordering::Greater),
),
(
(Ordering::Equal, false),
(Ordering::Equal, false),
(Ordering::Greater, Ordering::Less, Ordering::Less),
),
(
(Ordering::Equal, false),
(Ordering::Equal, false),
(Ordering::Greater, Ordering::Less, Ordering::Greater),
),
(
(Ordering::Equal, false),
(Ordering::Equal, false),
(Ordering::Greater, Ordering::Greater, Ordering::Less),
),
(
(Ordering::Equal, false),
(Ordering::Equal, false),
(Ordering::Greater, Ordering::Greater, Ordering::Greater),
),
(
(Ordering::Equal, false),
(Ordering::Equal, true),
(Ordering::Less, Ordering::Less, Ordering::Less),
),
(
(Ordering::Equal, false),
(Ordering::Equal, true),
(Ordering::Less, Ordering::Less, Ordering::Greater),
),
(
(Ordering::Equal, false),
(Ordering::Equal, true),
(Ordering::Less, Ordering::Greater, Ordering::Less),
),
(
(Ordering::Equal, false),
(Ordering::Equal, true),
(Ordering::Less, Ordering::Greater, Ordering::Greater),
),
(
(Ordering::Equal, false),
(Ordering::Equal, true),
(Ordering::Greater, Ordering::Less, Ordering::Less),
),
(
(Ordering::Equal, false),
(Ordering::Equal, true),
(Ordering::Greater, Ordering::Less, Ordering::Greater),
),
(
(Ordering::Equal, false),
(Ordering::Equal, true),
(Ordering::Greater, Ordering::Greater, Ordering::Less),
),
(
(Ordering::Equal, false),
(Ordering::Equal, true),
(Ordering::Greater, Ordering::Greater, Ordering::Greater),
),
(
(Ordering::Equal, false),
(Ordering::Less, false),
(Ordering::Less, Ordering::Less, Ordering::Less),
),
(
(Ordering::Equal, false),
(Ordering::Less, false),
(Ordering::Less, Ordering::Less, Ordering::Greater),
),
(
(Ordering::Equal, false),
(Ordering::Less, false),
(Ordering::Less, Ordering::Greater, Ordering::Less),
),
(
(Ordering::Equal, false),
(Ordering::Less, false),
(Ordering::Less, Ordering::Greater, Ordering::Greater),
),
],
);
}
fn lex_triples_xyx_helper<
X: Clone + Debug + Eq,
I: Clone + Iterator<Item = X>,
Y: Clone + Debug + Eq,
J: Clone + Iterator<Item = Y>,
>(
xs: I,
ys: J,
out_len: usize,
out: &[(X, Y, X)],
) {
let ts = lex_triples_xyx(xs, ys);
let ts_prefix = ts.clone().take(20).collect_vec();
assert_eq!(ts_prefix.as_slice(), out);
assert_eq!(ts.count(), out_len);
}
#[test]
fn test_lex_triples_xyx() {
lex_triples_xyx_helper(nevers(), nevers(), 0, &[]);
lex_triples_xyx_helper(nevers(), 0..4, 0, &[]);
lex_triples_xyx_helper(once('a'), once(1), 1, &[('a', 1, 'a')]);
lex_triples_xyx_helper(
once('a'),
0..4,
4,
&[('a', 0, 'a'), ('a', 1, 'a'), ('a', 2, 'a'), ('a', 3, 'a')],
);
lex_triples_xyx_helper(
exhaustive_unsigneds::<u8>(),
'a'..'e',
1 << 18,
&[
(0, 'a', 0),
(0, 'a', 1),
(0, 'a', 2),
(0, 'a', 3),
(0, 'a', 4),
(0, 'a', 5),
(0, 'a', 6),
(0, 'a', 7),
(0, 'a', 8),
(0, 'a', 9),
(0, 'a', 10),
(0, 'a', 11),
(0, 'a', 12),
(0, 'a', 13),
(0, 'a', 14),
(0, 'a', 15),
(0, 'a', 16),
(0, 'a', 17),
(0, 'a', 18),
(0, 'a', 19),
],
);
lex_triples_xyx_helper(
exhaustive_bools(),
0..4,
16,
&[
(false, 0, false),
(false, 0, true),
(false, 1, false),
(false, 1, true),
(false, 2, false),
(false, 2, true),
(false, 3, false),
(false, 3, true),
(true, 0, false),
(true, 0, true),
(true, 1, false),
(true, 1, true),
(true, 2, false),
(true, 2, true),
(true, 3, false),
(true, 3, true),
],
);
lex_triples_xyx_helper(
'a'..'f',
0..3,
75,
&[
('a', 0, 'a'),
('a', 0, 'b'),
('a', 0, 'c'),
('a', 0, 'd'),
('a', 0, 'e'),
('a', 1, 'a'),
('a', 1, 'b'),
('a', 1, 'c'),
('a', 1, 'd'),
('a', 1, 'e'),
('a', 2, 'a'),
('a', 2, 'b'),
('a', 2, 'c'),
('a', 2, 'd'),
('a', 2, 'e'),
('b', 0, 'a'),
('b', 0, 'b'),
('b', 0, 'c'),
('b', 0, 'd'),
('b', 0, 'e'),
],
);
lex_triples_xyx_helper(
['a', 'b', 'c'].iter().cloned(),
exhaustive_orderings(),
27,
&[
('a', Ordering::Equal, 'a'),
('a', Ordering::Equal, 'b'),
('a', Ordering::Equal, 'c'),
('a', Ordering::Less, 'a'),
('a', Ordering::Less, 'b'),
('a', Ordering::Less, 'c'),
('a', Ordering::Greater, 'a'),
('a', Ordering::Greater, 'b'),
('a', Ordering::Greater, 'c'),
('b', Ordering::Equal, 'a'),
('b', Ordering::Equal, 'b'),
('b', Ordering::Equal, 'c'),
('b', Ordering::Less, 'a'),
('b', Ordering::Less, 'b'),
('b', Ordering::Less, 'c'),
('b', Ordering::Greater, 'a'),
('b', Ordering::Greater, 'b'),
('b', Ordering::Greater, 'c'),
('c', Ordering::Equal, 'a'),
('c', Ordering::Equal, 'b'),
],
);
lex_triples_xyx_helper(
lex_pairs(exhaustive_orderings(), exhaustive_bools()),
lex_triples_from_single([Ordering::Less, Ordering::Greater].iter().cloned()),
288,
&[
(
(Ordering::Equal, false),
(Ordering::Less, Ordering::Less, Ordering::Less),
(Ordering::Equal, false),
),
(
(Ordering::Equal, false),
(Ordering::Less, Ordering::Less, Ordering::Less),
(Ordering::Equal, true),
),
(
(Ordering::Equal, false),
(Ordering::Less, Ordering::Less, Ordering::Less),
(Ordering::Less, false),
),
(
(Ordering::Equal, false),
(Ordering::Less, Ordering::Less, Ordering::Less),
(Ordering::Less, true),
),
(
(Ordering::Equal, false),
(Ordering::Less, Ordering::Less, Ordering::Less),
(Ordering::Greater, false),
),
(
(Ordering::Equal, false),
(Ordering::Less, Ordering::Less, Ordering::Less),
(Ordering::Greater, true),
),
(
(Ordering::Equal, false),
(Ordering::Less, Ordering::Less, Ordering::Greater),
(Ordering::Equal, false),
),
(
(Ordering::Equal, false),
(Ordering::Less, Ordering::Less, Ordering::Greater),
(Ordering::Equal, true),
),
(
(Ordering::Equal, false),
(Ordering::Less, Ordering::Less, Ordering::Greater),
(Ordering::Less, false),
),
(
(Ordering::Equal, false),
(Ordering::Less, Ordering::Less, Ordering::Greater),
(Ordering::Less, true),
),
(
(Ordering::Equal, false),
(Ordering::Less, Ordering::Less, Ordering::Greater),
(Ordering::Greater, false),
),
(
(Ordering::Equal, false),
(Ordering::Less, Ordering::Less, Ordering::Greater),
(Ordering::Greater, true),
),
(
(Ordering::Equal, false),
(Ordering::Less, Ordering::Greater, Ordering::Less),
(Ordering::Equal, false),
),
(
(Ordering::Equal, false),
(Ordering::Less, Ordering::Greater, Ordering::Less),
(Ordering::Equal, true),
),
(
(Ordering::Equal, false),
(Ordering::Less, Ordering::Greater, Ordering::Less),
(Ordering::Less, false),
),
(
(Ordering::Equal, false),
(Ordering::Less, Ordering::Greater, Ordering::Less),
(Ordering::Less, true),
),
(
(Ordering::Equal, false),
(Ordering::Less, Ordering::Greater, Ordering::Less),
(Ordering::Greater, false),
),
(
(Ordering::Equal, false),
(Ordering::Less, Ordering::Greater, Ordering::Less),
(Ordering::Greater, true),
),
(
(Ordering::Equal, false),
(Ordering::Less, Ordering::Greater, Ordering::Greater),
(Ordering::Equal, false),
),
(
(Ordering::Equal, false),
(Ordering::Less, Ordering::Greater, Ordering::Greater),
(Ordering::Equal, true),
),
],
);
}