// Copyright © 2024 Mikhail Hogrefe // // This file is part of Malachite. // // Malachite is free software: you can redistribute it and/or modify it under the terms of the GNU // Lesser General Public License (LGPL) as published by the Free Software Foundation; either version // 3 of the License, or (at your option) any later version. See . use malachite_base::iterators::comparison::{is_strictly_zigzagging, is_weakly_zigzagging}; fn is_weakly_zigzagging_helper(xs: &[u8], result: bool) { assert_eq!(is_weakly_zigzagging(xs.iter()), result); assert_eq!(is_weakly_zigzagging(xs.iter().rev()), result); if xs.len() < 3 { assert!(result); } if !result { assert!(!is_strictly_zigzagging(xs.iter())); } } #[test] fn test_is_weakly_zigzagging() { is_weakly_zigzagging_helper(&[], true); is_weakly_zigzagging_helper(&[5], true); is_weakly_zigzagging_helper(&[5, 6], true); is_weakly_zigzagging_helper(&[5, 5], true); is_weakly_zigzagging_helper(&[5, 4], true); is_weakly_zigzagging_helper(&[1, 2, 3, 4], false); is_weakly_zigzagging_helper(&[1, 2, 2, 4], true); is_weakly_zigzagging_helper(&[1, 3, 2, 4], true); is_weakly_zigzagging_helper(&[3, 1, 4, 1, 5, 9], false); }